Add a confirmation deleted dialog in DataGrid, the second method is to use ButtonColumn, this approach is different from the first method: We can't use the FindControl method to reference the Button control, because we don't know that it is generated by ButtonColumn. The ID of each Button control, we can use TableCell to reference the Button control in Tablecell. Once the Button control is referenced, we can use the Attributes collection to add an onclick event. The source code is as follows:
Deleteit2.aspx
code:
<% @ Page language = "vb" autoeventwireup = "false" codebehind = "deleteit2.aspx.vb"
Inherits = "aspxweb.deleteit2"%>
deleteit2 </ title></p>
<p><meta name = "generator" Content = "Microsoft Visual Studio .NET 7.0"></p>
<p><meta name = "code_language" content = "Visual Basic 7.0"></p>
<p><meta name = "vs_defaultclientscript" content = "javascript"></p>
<p><meta name = "vs_targetschema" content = "</p>
<p>http://schemas.microsoft.com/intellisense/ie5 "></p>
<p></ HEAD></p>
<p><body ms_positioning = "gridLayout"></p>
<p><form id = "form1" method = "post" runat = "server"></p>
<p><asp: label id = "label1" runat = "server"> </ asp: label></p>
<p><ask: DataGrid ID = "MyDataGrid" onItemcreated = "DataGrid_Itemcreated" runat = "server"</p>
<p>OndeleteCommand = "MyDataGrid_delete" DataKeyfield = "Title" AutoGenerateColumns = "false"></p>
<p><Columns></p>
<p><asp: buttoncolumn commandname = "delete" /></p>
<p><ask: templatecolumn></p>
<p><Itemtemplate></p>
<p><asp: label runat = "server" text = '<% # DataBinder.eval (Container.DataItem, "Title")%>' /> </ itemtemplate></p>
<p></ asp: templateColumn></p>
<p><ask: templatecolumn></p>
<p><Itemtemplate></p>
<p><ask: label runat = "server" text = '<% # databinder.eval (container.dataitem, _</p>
<p>"CreateDate", "{0: YYYY-M-D}")%> '/></p>
<p></ Itemtemplate></p>
<p></ asp: templateColumn></p>
<p></ Columns></p>
<p></ ask: DataGrid></p>
<p></ form></p>
<p></ body></p>
<p></ Html></p>
<p>code:</p>
<p>Imports system</p>
<p>Imports system.Web</p>
<p>Imports system.data</p>
<p>Imports system.data.oledb</p>
<p>Imports System.Web.ui.WebControls</p>
<p>Public class deleteit2</p>
<p>Inherits System.Web.ui.page</p>
<p>Protected Withevents Label1 As System.Web.ui.WebControls.label</p>
<p>Protected withevents mydatagrid as system.web.ui.webcontrols.datagrid</p>
<p>#Region "The code" of the web form designer "</p>
<p>'This call is required for the web form designer.</p>
<p><System.diagnostics.debuggerstepthrough ()> private subinitializecomponent ()</p>
<p>End Sub</p>
<p>Private sub page_init (Byvale as system.Object, byval e as system.eventargs) _EventArgs</p>
<p>Handles mybase.init</p>
<p>'Codegen: This method call is necessary for the web form designer</p>
<p>'Don't modify it using the code editor.</p>
<p>InitializeComponent ()</p>
<p>End Sub</p>
<p>#End region</p>
<p>Private sub page_load (byval sender as system.Object, byval e as system.eventargs)</p>
<p>Handles mybase.load</p>
<p>'Place the user code of the initialization page here</p>
<p>MyDataGrid.headerstyle.horizontalalign = horizontalalign.center</p>
<p>MyDataGrid.headerstyle.font.bold = TRUE</p>
<p>MyDataGrid.headerstyle.backcolor = system.drawing.color.ivory</p>
<p>MyDataGrid.columns (0) .Headertext = "Operation"</p>
<p>MyDataGrid.columns (1) .Headertext = "Title"</p>
<p>MyDataGrid.columns (2) .Headertext = "Create Date"</p>
<p>IF not ispostback.</p>
<p>DIM STRCN As String = "provider = microsoft.jet.Oledb.4.0; data source =" _ server.mappath ("test.mdb")</p>
<p>Dim strsql as string = "SELECT TOP 15 ObjectGuid, Title, Created" _</p>
<p> "From Document Order By CreateDate DESC"</p>
<p>DIM CN AS New OLEDBConnection (STRCN)</p>
<p>cn.open ()</p>
<p>DIM CMD AS New OLEDBCommand (strsql, cn)</p>
<p>MyDataGrid.dataSource = cmd.executeReader (Commandbehavior.CloseConnection)</p>
<p>MyDataGrid.Database</p>
<p>cmd.dispose ()</p>
<p>CMD = Nothing</p>
<p>cn.close ()</p>
<p>cn.dispose ()</p>
<p>CN = Nothing</p>
<p>END IF</p>
<p>End Sub</p>
<p>Public Sub DataGrid_Itemcreated (Byval Sender As Object, _</p>
<p>Byval e as system.web.ui.webcontrols.dataGriditemeventargs) Handles myDataGrid.Itemcreated</p>
<p>Select Case E.Item.ItemType</p>
<p>Case ListItemType.Item, ListItemType.AlternatingItem, ListItemType.editItem</p>
<p>DIM MyTablecell As TableCell</p>
<p>MyTableCell = E.Item.cells (0)</p>
<p>DIM MyDeletebutton as LinkButton</p>
<p>MyDeleteButton = MyTableCell.controls (0)</p>
<p>MyDeleteButton.attributes.add ("onclick", "Return Confirm ('Do you really want to delete this row?');")</p>
<p>MyDeleteButton.Text = "Delete this line"</p>
<p>End SELECT</p>
<p>End Sub</p>
<p>Sub MyDataGrid_Delete (Byval E AS DataGridCommandEventEventEventArgs)</p>
<p>Label1.text = "You want to delete: <font color = red>" _</p>
<p> MyDataGrid.dataKeys (cint (e.Item.ItemIndex) "</ font>"</p>
<p>E.Item.BackColor = system.drawing.color.tomato</p>
<p>End Sub</p>
<p>END CLASS</p></div><div class="text-center mt-3 text-grey">
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