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This commit is contained in:
535
iMES.Bi.API/ExtensionMethods.cs
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535
iMES.Bi.API/ExtensionMethods.cs
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using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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namespace iMES.Bi.API
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{
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public static class MyExtensions
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{
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public static int[] SplitTOInt(this string strs, char ch)
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{
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string[] arrstr = strs.Split(ch);
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int[] arrint = new int[arrstr.Length];
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for (int i = 0; i < arrstr.Length; i++)
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{
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arrint[i] = int.Parse(arrstr[i].ToString());
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}
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return arrint;
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}
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public static List<string> SplitTOList(this string strs, char ch)
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{
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List<string> Lstr = new List<string>();
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string[] arrstr = strs.Split(ch);
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int[] arrint = new int[arrstr.Length];
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for (int i = 0; i < arrstr.Length; i++)
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{
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Lstr.Add(arrstr[i].ToString());
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}
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return Lstr;
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}
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public static Dictionary<string, string> SplitTODictionary(this string strs, char ch, string strKey)
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{
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Dictionary<string, string> Lstr = new Dictionary<string, string>();
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string[] arrstr = strs.Split(ch);
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int[] arrint = new int[arrstr.Length];
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for (int i = 0; i < arrstr.Length; i++)
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{
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Lstr.Add(arrstr[i].ToString(), strKey);
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}
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return Lstr;
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}
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/// <summary>
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/// 将List转化为String
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/// </summary>
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/// <param name="Lists"></param>
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/// <param name="ch"></param>
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/// <returns></returns>
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public static string ListTOString(this List<string> Lists, char ch)
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{
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string strReturn = "";
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foreach (var item in Lists)
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{
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strReturn = strReturn + item.ToString() + ch;
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}
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return strReturn.TrimEnd(ch);
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}
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/// <summary>
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/// 将List(int)转化为String
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/// </summary>
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/// <param name="Lists"></param>
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/// <param name="ch"></param>
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/// <returns></returns>
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public static string ListTOString(this List<int> Lists, char ch)
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{
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string strReturn = "";
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foreach (var item in Lists)
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{
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strReturn = strReturn + item.ToString() + ch;
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}
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return strReturn.TrimEnd(ch);
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}
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/// <summary>
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/// 获取需要IN的格式
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/// </summary>
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/// <param name="strKys"></param>
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/// <returns></returns>
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public static string ToFormatLike(this string strKys)
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{
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StringBuilder sbKeys = new StringBuilder();
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foreach (var item in strKys.Split(','))
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{
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sbKeys.AppendFormat("'" + item.ToString() + "',");
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}
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return sbKeys.Length > 0 ? sbKeys.ToString().TrimEnd(',').Trim('\'') : "";
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}
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/// <summary>
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/// 获取需要IN的格式
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/// </summary>
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/// <param name="strKys"></param>
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/// <returns></returns>
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public static string ToFormatLike(this string strKys, char ch)
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{
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StringBuilder sbKeys = new StringBuilder();
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foreach (var item in strKys.Split(ch))
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{
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sbKeys.AppendFormat("'" + item.ToString() + "',");
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}
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return sbKeys.Length > 0 ? sbKeys.ToString().TrimEnd(',').Trim('\'') : "";
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}
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/// <summary>
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/// 取前N个字符,后面的用省略号代替
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/// </summary>
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/// <param name="strKys"></param>
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/// <returns></returns>
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public static string ToMangneStr(this string strKys, int intLenght)
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{
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return strKys.Length > intLenght ? strKys.Substring(0, intLenght) + "…………" : strKys;
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}
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public static DataTable ToDataTable<T>(this IEnumerable<T> varlist)
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{
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DataTable dtReturn = new DataTable();
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// column names
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PropertyInfo[] oProps = null;
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if (varlist == null) return dtReturn;
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foreach (T rec in varlist)
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{
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if (oProps == null)
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{
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oProps = ((Type)rec.GetType()).GetProperties();
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foreach (PropertyInfo pi in oProps)
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{
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Type colType = pi.PropertyType;
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if ((colType.IsGenericType) && (colType.GetGenericTypeDefinition()
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== typeof(Nullable<>)))
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{
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colType = colType.GetGenericArguments()[0];
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}
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dtReturn.Columns.Add(new DataColumn(pi.Name, colType));
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}
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}
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DataRow dr = dtReturn.NewRow();
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foreach (PropertyInfo pi in oProps)
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{
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dr[pi.Name] = pi.GetValue(rec, null) == null ? DBNull.Value : pi.GetValue
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(rec, null);
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}
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dtReturn.Rows.Add(dr);
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}
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return dtReturn;
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}
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public static DataTable OrderBy(this DataTable dt, string orderBy)
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{
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dt.DefaultView.Sort = orderBy;
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return dt.DefaultView.ToTable();
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}
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public static DataTable Where(this DataTable dt, string where)
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{
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DataTable resultDt = dt.Clone();
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DataRow[] resultRows = dt.Select(where);
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foreach (DataRow dr in resultRows) resultDt.Rows.Add(dr.ItemArray);
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return resultDt;
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}
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/// <summary>
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/// Datatable转换为Json
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/// </summary>
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/// <param name="table">Datatable对象</param>
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/// <returns>Json字符串</returns>
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public static string ToJson(this DataTable dt)
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{
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StringBuilder jsonString = new StringBuilder();
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jsonString.Append("[");
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DataRowCollection drc = dt.Rows;
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for (int i = 0; i < drc.Count; i++)
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{
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jsonString.Append("{");
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for (int j = 0; j < dt.Columns.Count; j++)
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{
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string strKey = dt.Columns[j].ColumnName;
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string strValue = drc[i][j].ToString();
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Type type = dt.Columns[j].DataType;
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jsonString.Append("\"" + strKey + "\":");
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strValue = StringFormat(strValue, type);
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if (j < dt.Columns.Count - 1)
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{
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jsonString.Append(strValue + ",");
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}
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else
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{
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jsonString.Append(strValue);
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}
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}
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jsonString.Append("},");
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}
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jsonString.Remove(jsonString.Length - 1, 1);
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if (jsonString.Length != 0)
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{
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jsonString.Append("]");
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}
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return jsonString.ToString();
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}
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public static int ToInt32(this Object obj)
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{
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return Convert.ToInt32(obj);
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}
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public static DateTime ToDateTime(this Object obj)
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{
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return Convert.ToDateTime(obj);
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}
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public static T GetProperty<T>(this object obj, string propertyName)
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{
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var property = obj.GetType().GetProperty(propertyName);
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if (property != null)
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{
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return (T)property.GetValue(obj, null);
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}
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throw new ArgumentNullException(propertyName);
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}
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/// <summary>
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/// DataTable转成Json
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/// </summary>
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/// <param name="jsonName"></param>
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/// <param name="dt"></param>
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/// <returns></returns>
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public static string ToJson(this DataTable dt, string jsonName)
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{
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StringBuilder Json = new StringBuilder();
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if (string.IsNullOrEmpty(jsonName))
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jsonName = dt.TableName;
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Json.Append("{\"" + jsonName + "\":[");
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if (dt.Rows.Count > 0)
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{
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for (int i = 0; i < dt.Rows.Count; i++)
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{
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Json.Append("{");
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for (int j = 0; j < dt.Columns.Count; j++)
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{
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Type type = dt.Rows[i][j].GetType();
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Json.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":" + StringFormat(dt.Rows[i][j].ToString(), type));
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if (j < dt.Columns.Count - 1)
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{
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Json.Append(",");
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}
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}
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Json.Append("}");
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if (i < dt.Rows.Count - 1)
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{
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Json.Append(",");
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}
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}
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}
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Json.Append("]}");
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return Json.ToString();
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}
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/// <summary>
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/// 过滤特殊字符
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/// </summary>
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/// <param name="s"></param>
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/// <returns></returns>
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public static string String2Json(String s)
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{
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < s.Length; i++)
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{
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char c = s.ToCharArray()[i];
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switch (c)
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{
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case '\"':
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sb.Append("\\\""); break;
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case '\\':
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sb.Append("\\\\"); break;
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case '/':
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sb.Append("\\/"); break;
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case '\b':
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sb.Append("\\b"); break;
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case '\f':
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sb.Append("\\f"); break;
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case '\n':
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sb.Append("\\n"); break;
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case '\r':
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sb.Append("\\r"); break;
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case '\t':
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sb.Append("\\t"); break;
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default:
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sb.Append(c); break;
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}
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}
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return sb.ToString();
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}
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/// <summary>
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/// 格式化字符型、日期型、布尔型
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/// </summary>
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/// <param name="str"></param>
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/// <param name="type"></param>
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/// <returns></returns>
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public static string StringFormat(string str, Type type)
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{
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if (type == typeof(string))
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{
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str = String2Json(str);
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str = "\"" + str + "\"";
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}
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else if (type == typeof(DateTime))
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{
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str = "\"" + str + "\"";
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}
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else if (type == typeof(Int32))
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{
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if (str.Trim() == "")
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{
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str = "\"" + str + "\"";
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}
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}
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else if (type == typeof(bool))
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{
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str = str.ToLower();
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}
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return str;
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}
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/// <summary>
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/// 过滤特殊字符
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/// 如果字符串为空，直接返回。
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/// </summary>
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/// <param name="str">需要过滤的字符串</param>
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/// <returns>过滤好的字符串</returns>
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public static string FilterSpecial(this string str)
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{
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if (str == "")
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{
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return str;
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}
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else
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{
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str = str.Replace("'", "");
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str = str.Replace("<", "");
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str = str.Replace(">", "");
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str = str.Replace("%", "");
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str = str.ToLower().Replace("'delete", "");
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str = str.ToLower().Replace("'truncate", "");
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str = str.Replace("''", "");
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str = str.Replace("\"\"", "");
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str = str.Replace(",", "");
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str = str.Replace(".", "");
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str = str.Replace(">=", "");
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str = str.Replace("=<", "");
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str = str.Replace(";", "");
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str = str.Replace("||", "");
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str = str.Replace("[", "");
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str = str.Replace("]", "");
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str = str.Replace("&", "");
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str = str.Replace("#", "");
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str = str.Replace("/", "");
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str = str.Replace("|", "");
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str = str.Replace("?", "");
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str = str.Replace(">?", "");
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str = str.Replace("?<", "");
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return str;
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}
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}
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/// <summary>
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/// 删除列
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/// </summary>
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/// <param name="dt"></param>
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/// <param name="sCol">保存的列,其他删除</param>
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/// <returns></returns>
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public static DataTable DelTableCol(this DataTable dt, string sCol)
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{
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if (sCol == "")
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return dt;
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string[] sp = sCol.Split(',');
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string sqldd = "";
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for (int n = 0; n < sp.Length; n++)
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{
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sqldd += sp[n].Split('|')[0] + ',';
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}
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for (int i = 0; i < dt.Columns.Count; i++)
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{
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if (!sqldd.Split(',').Contains(dt.Columns[i].ColumnName))
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{
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dt.Columns.RemoveAt(i);
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i = i - 1;
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}
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else
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{
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for (int j = 0; j < sp.Length; j++)
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{
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string[] sg = sp[j].Split('|');
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if (sg.Length > 1 && sg[0] == dt.Columns[i].ColumnName)
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{
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dt.Columns[i].ColumnName = sg[1];
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}
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}
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}
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}
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return dt;
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}
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/// <summary>
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/// 根据条件过滤表
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/// </summary>
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/// <param name="dt">未过滤之前的表</param>
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/// <param name="filter">过滤条件</param>
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/// <returns>返回过滤后的表</returns>
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public static DataTable FilterTable(this DataTable dt, string filter, string isSJ = "N")
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{
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DataTable newTable = dt.Clone();
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DataRow[] drs = dt.Select(filter);
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foreach (DataRow dr in drs)
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{
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newTable.Rows.Add(dr.ItemArray);
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}
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return newTable;
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}
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/// <summary>
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/// 随机排序
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/// </summary>
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/// <param name="newTable"></param>
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/// <returns></returns>
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public static DataTable SJTable(this DataTable newTable)
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{
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Random ran = new Random();
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newTable.Columns.Add("sort", typeof(int));
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for (int i = 0; i < newTable.Rows.Count; i++)
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{
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newTable.Rows[i]["sort"] = ran.Next(0, 100);
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}
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DataView dv = newTable.DefaultView;
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dv.Sort = "sort asc";
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newTable = dv.ToTable();
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return newTable;
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}
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/// <summary>
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/// 处理生成的DataTable
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/// </summary>
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/// <param name="newTable"></param>
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/// <param name="addclName">添加的列</param>
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/// <param name="clNames">需要合并的列</param>
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/// <returns></returns>
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public static DataTable AddColum(this DataTable DTTable,string addclName, char strChar,params string[] clNames)
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{
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DTTable.Columns.Add(addclName);
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for (int i = 0; i < DTTable.Rows.Count; i++)
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{
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string strTemp = "";
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for (int m = 0; m < clNames.Length; m++)
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{
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strTemp = strTemp + DTTable.Rows[i][clNames[m]].ToString() + strChar;
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||||
}
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DTTable.Rows[i][addclName] = strTemp.TrimEnd(strChar);
|
||||
|
||||
}
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||||
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return DTTable;
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}
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/// <summary>
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/// dataTable分页
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/// </summary>
|
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/// <param name="dt"></param>
|
||||
/// <param name="PageIndex"></param>
|
||||
/// <param name="PageSize"></param>
|
||||
/// <returns></returns>
|
||||
public static DataTable SplitDataTable(this DataTable dt, int PageIndex, int PageSize)
|
||||
{
|
||||
if (PageIndex == 0)
|
||||
return dt;
|
||||
DataTable newdt = dt.Clone();
|
||||
//newdt.Clear();
|
||||
int rowbegin = (PageIndex - 1) * PageSize;
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||||
int rowend = PageIndex * PageSize;
|
||||
|
||||
if (rowbegin >= dt.Rows.Count)
|
||||
return newdt;
|
||||
|
||||
if (rowend > dt.Rows.Count)
|
||||
rowend = dt.Rows.Count;
|
||||
for (int i = rowbegin; i <= rowend - 1; i++)
|
||||
{
|
||||
DataRow newdr = newdt.NewRow();
|
||||
DataRow dr = dt.Rows[i];
|
||||
foreach (DataColumn column in dt.Columns)
|
||||
{
|
||||
newdr[column.ColumnName] = dr[column.ColumnName];
|
||||
}
|
||||
newdt.Rows.Add(newdr);
|
||||
}
|
||||
|
||||
return newdt;
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user