写在前面
在实际项目中,用到了将集合转换为DataTable,就试着封装了一个方法,记录一下。
代码
using System; using System.Collections.Generic; using System.Data; using System.Linq; using System.Reflection; using System.Text; using System.Threading.Tasks; namespace Wolfy.List2DataTable { class Program { static void Main(string[] args) { List<Person> lst = new List<Person>() { new Person(){ ID=1, Gender=false, Name="wolfy1"}, new Person(){ ID=2, Gender=false, Name="wolfy2"}, new Person(){ ID=3, Gender=false, Name="wolfy3"}, new Person(){ ID=4, Gender=false, Name="wolfy4"}, new Person(){ ID=5, Gender=false, Name="wolfy5"}, }; DataTable dt = List2DataTable<Person>(lst); Console.WriteLine("转换结束"); Console.Read(); } /// <summary> /// 将泛型集合转换为datatable /// </summary> /// <typeparam name="TEntity"></typeparam> /// <param name="entities"></param> /// <returns></returns> static DataTable List2DataTable<TEntity>(List<TEntity> entities) { if (entities == null) { throw new ArgumentNullException("转换的集合为空"); } Type type = typeof(TEntity); PropertyInfo[] properties = type.GetProperties(); DataTable dt = new DataTable(type.Name); foreach (var item in properties) { dt.Columns.Add(new DataColumn(item.Name) { DataType = item.PropertyType }); } foreach (var item in entities) { DataRow row = dt.NewRow(); foreach (var property in properties) { row[property.Name] = property.GetValue(item); } dt.Rows.Add(row); } return dt; } } public class Person { public int ID { set; get; } public string Name { set; get; } public bool Gender { set; get; } } }
测试结果: