直接使用
//Linq
var l1 = (from d in dt.AsEnumerable() select d.Field<int>("ID")).ToList();
//lambda
var l2 = dt.AsEnumerable().ToList().Select(x => x.Field<int>("ID")).ToList();
var l1 = (from d in dt.AsEnumerable() select d.Field<int>("ID")).ToList();
//lambda
var l2 = dt.AsEnumerable().ToList().Select(x => x.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();
封装方法
公共方法
/// <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>();
}
调用
DataTable dt = new DataTable();
List<int> ids= DataTablePro.GetColumnValues<int>(dt, "ID");
文章地址https://www.yii666.com/article/764176.html网址:yii666.com文章来源地址:https://www.yii666.com/article/764176.html