泛型 List转换成DataTable

Posted 2021-03-20 yourdirection

 1         private DataTable listToDataTable<T>(List<T> ListItem)
 2         {
 3             //实列化DataTable对象
 4             var dt = new DataTable(typeof(T).Name);
 5 
 6             //通过反射获取List实体的属性信息
 7             PropertyInfo[] propertyInfos = typeof(T).GetProperties(BindingFlags.Public | BindingFlags.Instance);
 8 
 9             //给DataTable 添加定义
10             foreach (var propertyInfo in propertyInfos)
11             {
12                 dt.Columns.Add(propertyInfo.Name, propertyInfo.PropertyType);
13             }
14 
15             //给DataTable 添加数据
16             foreach (T item in ListItem)
17             {
18                 var values = new object[propertyInfos.Length];
19                 for (int i = 0; i < propertyInfos.Length; i++)
20                 {
21                     values[i] = propertyInfos[i].GetValue(item);
22                 }
23                 dt.Rows.Add(values);
24             }
25 
26             //返回DataTable
27             return dt;
28         }