1、直接使用

 

List<int> lstID = (from d in dt.AsEnumerable() select d.Field<int>("ID")).ToList();

//使用orderby关键字进行排序

List<string> listJobTitle = (from d in dvBaseInfo.ToTable().AsEnumerable() orderby d.Field<int>("OrderNo") select d.Field<string>("VName")).ToList();

2、封装方法

/// <summary>

/// 获取某一列的所有值

/// </summary>

/// <typeparam name="T">列数据类型</typeparam>

/// <param name="dtSource">数据表</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>();

}

 

方法调用：

获取字段ID的所有值

DataTable dt = new DataTable();

List<int> ids= DataTablePro.GetColumnValues<int>(dt, "ID");