1. 使用Table的Clone()方法复制Table 可以通过调用源Table的Clone()方法生成一个新的Table对象,并复制源Table中所有行和列的信息到新的Table中: Dim newTable As DataTable = oldTable.Clone() 其中newTable是生成的新的Table对象,oldTable是源Table的对象。 2. 从源Table复制到目标Table 还可以通过创建一个新...
1、网上也给出了几种可用的方法,因为我没有学过.net,所以懒得去研究:https://www.cnblogs.com/qfb620/p/4134955.html。 2、我自己写的方法,思路如下: 第一种: ①克隆:datatable1,名为datatable2=datatable1.Clone();//克隆表结构 ②循环:将datatable1的item.ItemArray复制到datatable2,item=datatable1....
csDataTable1.columns.add("id")csDataTable1.columns.add("name")dim csDataRow1 as DataRow = csDataTable1.NewRow()csDataRow1.item("id") = 1 csDataRow1.item("name") = "aa"dim csDataTable2 as DataTable = csDataTable1.clone dim csDataRow2 as DataRow = csDataTable1....
DataTabledtNew=dt.Clone(); for (inti = 0; i <drArr.Length; i++) { dtNew.Rows.Add(drArr[i]); } 但这样程序就会出错,说该DataRow是属于其他DataTable的,那要怎么做呢?很简单,这样就可以解决了: 复制代码代码如下: DataTabledtNew=dt.Clone(); for (inti = 0; i <drArr.Length; i++)...
你可能会想到:复制代码代码如下:DataTabledtNew=dt.Clone();for(inti=0;idrArr.Length;i+)dtNew.Rows.Add(drArri);但这样程序就会出错,说1咬DataRow是属于其他DataTable的,那要怎么做呢?很简单,这样就可以解决了:复制代码代码如下:DataTabledtNew=dt.Clone();for(inti=0;idrArr.Lengt 9、h;i+)dtNew....
退出系统 Application.Exit(); 清空文本框 两种方式 this.TextBox.clear(); t
CleanData ClearBookmark ClearBreakpointGroup ClearCollection ClearDictionary ClearSort ClearWindowContent ClickOnce ClientStatistics CloakOrHide CloneToDesktop 關閉 CloseAll ClosedCaption CloseDocument CloseDocumentGroup CloseLog CloseSolution 雲端 CloudBlobs CloudBusinessApplication CloudConfigurationFile CloudConsole ...
DimconStringAsString="Server=localhost;Database=net2;Uid=root;Pwd=123456;" DimconAsNewMySqlConnection(conString) DimcmdAsMySqlCommand DimadapterAsMySqlDataAdapter DimdtAsNewDataTable() PrivateSubForm1_Load(senderAsObject, eAsEventArgs)HandlesMyBase.Load ...
(sender As Object, e As EventArgs) Handles Button1.Click Dim dt As DataTable = CType(bsData.DataSource, DataTable) Dim childDataTable = dt.Clone If Not My.Application.IsFormOpen("ChildForm") Then mChildForm = New ChildForm mChildForm.DataGridView1.DataSource = childDataTable mChildForm...
CleanData ClearBookmark ClearBreakpointGroup ClearCollection ClearDictionary ClearSort ClearWindowContent ClickOnce ClientStatistics CloakOrHide CloneToDesktop 關閉 CloseAll ClosedCaption CloseDocument CloseDocumentGroup CloseLog CloseSolution 雲端 CloudBlobs CloudBusinessApplication CloudConfigurationFile CloudConsole...