C#幫助類：將List轉換成Datatable

 1 public class ListToDatatable
 2 {
 3     public static DataTable ToDataTable <T> (List <T> items)
 4     {
 5         var tb = new DataTable(typeof(T).Name);
 6 
 7         PropertyInfo[] props = typeof(T).GetProperties(BindingFlags.Public | BindingFlags.Instance);
 8 
 9         foreach(PropertyInfo prop in props)
10         {
11             Type t = GetCoreType(prop.PropertyType);
12             tb.Columns.Add(prop.Name, t);
13         }
14 
15         foreach(T item in items)
16         {
17             var values = new object[props.Length];
18 
19             for (int i = 0; i < props.Length; i++)
20             {
21                 values[i] = props[i].GetValue(item, null);
22             }
23 
24             tb.Rows.Add(values);
25         }
26 
27         return tb;
28     }
29 
30     public static bool IsNullable(Type t)
31     {
32         return !t.IsValueType || (t.IsGenericType && t.GetGenericTypeDefinition() == typeof(Nullable < > ));
33     }
34 
35     public static Type GetCoreType(Type t)
36     {
37         if (t != null && IsNullable(t))
38         {
39             if (!t.IsValueType)
40             {
41                 return t;
42             } else {
43                 return Nullable.GetUnderlyingType(t);
44             }
45         } else {
46             return t;
47         }
48     }
49 }