C#实现DataTable转换成IList的方法

 using System; using System.Collections; using System.Collections.Generic; using System.Data; using System.Reflection; namespace TBToListTest { public class TBToList where T : new() { /// 
 /// 获取列名集合 /// 
 private IList GetColumnNames(DataColumnCollection dcc) { IList list = new List(); foreach (DataColumn dc in dcc) { list.Add(dc.ColumnName); } return list; } /// 
 ///属性名称和类型名的键值对集合 /// 
 private Hashtable GetColumnType(DataColumnCollection dcc) { if (dcc == null || dcc.Count == 0) { return null; } IList colNameList = GetColumnNames(dcc); Type t = typeof(T); PropertyInfo[] properties = t.GetProperties(); Hashtable hashtable = new Hashtable(); int i = 0; foreach (PropertyInfo p in properties) { foreach (string col in colNameList) { if (col.ToLower().Contains(p.Name.ToLower())) { hashtable.Add(col, p.PropertyType.ToString() + i++); } } } return hashtable; } /// 
 /// DataTable转换成IList /// 
 ///  ///  public IList ToList(DataTable dt) { if (dt == null || dt.Rows.Count == 0) { return null; } PropertyInfo[] properties = typeof(T).GetProperties();//获取实体类型的属性集合 Hashtable hh = GetColumnType(dt.Columns);//属性名称和类型名的键值对集合 IList colNames = GetColumnNames(hh);//按照属性顺序的列名集合 List list = new List(); T model = default(T); foreach (DataRow dr in dt.Rows) { model = new T();//创建实体 int i = 0; foreach (PropertyInfo p in properties) { if (p.PropertyType == typeof(string)) { p.SetValue(model, dr[colNames[i++]], null); } else if (p.PropertyType == typeof(int)) { p.SetValue(model, int.Parse(dr[colNames[i++]].ToString()), null); } else if (p.PropertyType == typeof(DateTime)) { p.SetValue(model, DateTime.Parse(dr[colNames[i++]].ToString()), null); } else if (p.PropertyType == typeof(float)) { p.SetValue(model, float.Parse(dr[colNames[i++]].ToString()), null); } else if (p.PropertyType == typeof(double)) { p.SetValue(model, double.Parse(dr[colNames[i++]].ToString()), null); } } list.Add(model); } return list; } /// 
 /// 按照属性顺序的列名集合 /// 
 private IList GetColumnNames(Hashtable hh) { PropertyInfo[] properties = typeof(T).GetProperties();//获取实体类型的属性集合 IList ilist = new List(); int i = 0; foreach (PropertyInfo p in properties) { ilist.Add(GetKey(p.PropertyType.ToString() + i++, hh)); } return ilist; } /// 
 /// 根据Value查找Key /// 
 private string GetKey(string val, Hashtable tb) { foreach (DictionaryEntry de in tb) { if (de.Value.ToString() == val) { return de.Key.ToString(); } } return null; } } } 

 namespace TBToListTest { //实体 public class Person { public int ID { set; get; } public string Name { set; get; } public string Age { set; get; } public string Lover { set; get; } } } 

 using System; using System.Data; namespace TBToListTest { class Program { static void Main(string[] args) { TBToList tol = new TBToList(); Console.WriteLine(); DataTable dt = GetTable(); tol.ToList(dt); Console.Read(); } public static DataTable GetTable() { DataTable dt = new DataTable(); dt.Columns.Add("ID"); dt.Columns.Add("Age"); dt.Columns.Add("Lover"); dt.Columns.Add("Name"); DataRow dr = dt.NewRow(); dr["ID"] = 1; dr["Age"] = "Age1"; dr["Lover"] = "Lover1"; dr["Name"] = "Name1"; dt.Rows.Add(dr); DataRow dr1 = dt.NewRow(); dr1["ID"] = 2; dr1["Age"] = "Age2"; dr1["Lover"] = "Lover2"; dr1["Name"] = "Name2"; dt.Rows.Add(dr1); return dt; } } }