WebC# Datatable使用行修改列,c#,datatable,multiple-columns,C#,Datatable,Multiple Columns,我想在Datatable中修改我的表。 我知道我必须使用linq并对结果进行分组。 WebAug 30, 2012 · System.Data.DataTable dt = new System.Data.DataTable(); dt.AsEnumerable().Where(column => Convert.ToInt32(column["uniqueID"]) != 1000).CopyToDataTable(); Regards //SFP Edited by -SFP- Monday, August 27, 2012 11:24 AM Marked as answer by Mike Dos Zhang Thursday, August 30, 2012 7:41 AM Monday, …
C#中DataTable和List互转的示例代码 - 编程宝库
WebDec 6, 2014 · Select (item => new { Name = item.ColumnName, Type=item.DataType }).ToList (); foreach (DataRow dataRow in dataTable.AsEnumerable ().ToList ()) { var classObj = new T (); foreach ( var dtField in dtlFieldNames) { PropertyInfo propertyInfos = classObj.GetType ().GetProperty (dtField.Name); var field = objFieldNames.Find (x => … http://duoduokou.com/csharp/64089728751114924139.html rethills
c# - Datatable Select() Method - Stack Overflow
WebThe datatable is the part of the System Classes like the System.Data in the table namespaces. Using these class, we can add, select and iterate the datas in the database. And also, the datatable class additionally used in the clone operations; with the help of filters, we can store and retrieve the datas in the table. WebThe return value for DataTable.Select is a DataRow [] array. It returns a list of matching DataRows. Your code does nothing with those rows at the moment. You can setup a … WebNov 16, 2005 · DataTable.Select but that doesn't work. If I have columns "col1", "col2", "col3" in my DataTable "Table1", I need to basically be able to do this: select distinct col2 form Table1 I tried doing this: DataRow [] ResultsRowArray = MyTable.Select ("distinct col2"); I don't believe the DataTable Select method supports the DISTINCT keyword in ps 125 2 wt