/// <summary>
/// 獲取某一列的所有值
/// </summary>
/// <typeparam name="T">列數據類型</typeparam>
/// <param name="dtSource">數據表</param>
/// <param name="filedName">列名</param>
/// <returns></returns>
public static List<T> GetColumnValues<T>(DataTable dtSource,string filedName)
{
return (from r in dtSource.AsEnumerable() select r.Field<T>("ID")).ToList<T>();
}
方法調用:
獲取字段ID的所有值
DataTable dt = ......;
List<int> ids= DataTablePro.GetColumnValues<int>(dt, "ID");
直接使用:
//遍歷DataTable,取出所有的ID :
List<int> lstID = (from d in dt.AsEnumerable() select d.Field<int>("ID")).ToList();