public class List2DataTable     {

public static string GetClassName(Type type)

{             if (type == null)

throw new ArgumentException("参数type不能为空");

if (type.HasAttribute<AliasAttribute>())

return type.GetAttribute<AliasAttribute>().Name.ToLower();

else

return type.Name.ToLower();

}

public static DataTable ListToDataTable<T>(List<T> oList) where T : class

{

try

{

string tableName = GetClassName(typeof(T));

DataTable dt = new DataTable();

string fieldName;

object fieldValue;

string[] fieldNames;

System.Reflection.PropertyInfo[] Props = typeof(T).GetProperties();

fieldNames = new string[Props.Length];

for (int i = 0; i < Props.Length; i++)

{

fieldName = Props[i].Name;

fieldNames[i] = fieldName;

dt.Columns.Add(fieldName, Props[i].PropertyType);

}

for (int r = 0; r < oList.Count; r++)

{

DataRow dr = dt.NewRow();

T o = oList[r];

for (int i = 0; i < fieldNames.Length; i++)

{

fieldValue = Props[i].GetValue(o, null);

dr[fieldNames[i]] = fieldValue;

}

dt.Rows.Add(dr);

}

return dt;

}

catch(Exception ex)             {             }

return null;

}

}