測試方法: private static void Main(string[] args) { var list = new List<Perso ...
DataTable dtGroupBy dt com sub.AsEnumerable .GroupBy r gt new BudgetSubjectID r BudgetSubjectID , Subjectid r Subjectid , ItemNo r ItemNo .Select g gt var row dt com sub.NewRow row BudgetSubjectID g. ...
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測試方法: private static void Main(string[] args) { var list = new List<Perso ...
另外微軟知識庫里面有個DataSetHelper ,可以對DataSet中的DataTable進行Distinct、Group by、Join和Create using System; using System.Collections; using ...
datatable我們是經常使用到的,但是需要對數據進行分組,具體代碼如下: 這樣就實現了分組,返回的result相當於一個dynamic對象。很簡單的 ...
DataTable dt = new DataTable("Datas"); DataColumn dc = null; //dt新增列 dc=dt.Columns.Add("id", Type.GetType("System.Int32")); //課件id dc ...
轉 : https://blog.csdn.net/weixin_30639719/article/details/95185742 ...
DataTable dt = new DataTable("Datas"); DataColumn dc = null;//dt新增列dc=dt.Columns.Add("id", Type.GetType("System.Int32")); //課件iddc ...
DataTable dt = SQLLayer.Get工作量統計(beginDate, endDate); var querySum = from t in dt.AsEnumerable ...