125 lines
4.2 KiB
C#
125 lines
4.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Reflection;
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namespace HT.Cloud.Code
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{
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public static class DataTableExtends
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{
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public static List<Dictionary<string, object>> DataTabletoList(this DataTable dt)
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{
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List<Dictionary<string, object>> list = new List<Dictionary<string, object>>();
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foreach (DataRow dr in dt.Rows)//每一行信息，新建一个Dictionary<string,object>,将该行的每列信息加入到字典
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{
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Dictionary<string, object> result = new Dictionary<string, object>();
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foreach (DataColumn dc in dt.Columns)
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{
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result.Add(dc.ColumnName, dr[dc].ToString());
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}
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list.Add(result);
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}
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return list;
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}
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}
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public class DataTableConvertModel<T> where T : new()
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{
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public static List<T> ConvertDataTableToList(DataTable dt)
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{
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// 定义集合
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List<T> ts = new List<T>();
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// 获得此模型的类型
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Type type = typeof(T);
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string tempName = "";
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foreach (DataRow dr in dt.Rows)
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{
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T t = new T();
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// 获得此模型的公共属性
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PropertyInfo[] propertys = t.GetType().GetProperties();
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foreach (PropertyInfo pi in propertys)
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{
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tempName = pi.Name; // 检查DataTable是否包含此列
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if (dt.Columns.Contains(tempName))
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{
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// 判断此属性是否有Setter
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if (!pi.CanWrite) continue;
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object value = dr[tempName];
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if (value != DBNull.Value)
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pi.SetValue(t, value, null);
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}
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}
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ts.Add(t);
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}
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return ts;
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}
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public static IList<T> ConvertDataTableToIList(DataTable dt)
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{
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// 定义集合
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IList<T> ts = new List<T>();
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// 获得此模型的类型
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Type type = typeof(T);
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string tempName = "";
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foreach (DataRow dr in dt.Rows)
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{
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T t = new T();
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// 获得此模型的公共属性
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PropertyInfo[] propertys = t.GetType().GetProperties();
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foreach (PropertyInfo pi in propertys)
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{
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tempName = pi.Name; // 检查DataTable是否包含此列
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if (dt.Columns.Contains(tempName))
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{
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// 判断此属性是否有Setter
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if (!pi.CanWrite) continue;
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object value = dr[tempName];
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if (value != DBNull.Value)
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pi.SetValue(t, value, null);
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}
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}
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ts.Add(t);
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}
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return ts;
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}
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public static T ConvertDataTableToModel(DataTable dt)
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{
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if (dt == null) return default(T);
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// 定义集合
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// 获得此模型的类型
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Type type = typeof(T);
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string tempName = "";
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T t = new T();
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if (dt.Rows.Count > 0)
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{
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var dr = dt.Rows[0];
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// 获得此模型的公共属性
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PropertyInfo[] propertys = t.GetType().GetProperties();
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foreach (PropertyInfo pi in propertys)
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{
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tempName = pi.Name; // 检查DataTable是否包含此列
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if (dt.Columns.Contains(tempName))
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{
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// 判断此属性是否有Setter
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if (!pi.CanWrite) continue;
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object value = dr[tempName];
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if (value != DBNull.Value)
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pi.SetValue(t, value, null);
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}
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}
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return t;
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}
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else
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return default(T);
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}
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}
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}
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