how to add user control multiple times in runtime on a webpage in ASP.NET

i'm having one user control in asp.net ,i just want to add the user control multiple times in a single web page in 开发者_运维百科runtime in a separate table. How to do this?

thanks

Use the Page.LoadControl method to dynamically create a user control instance, and add it to a parent control like:

var uc = Page.LoadControl("~/uc.ascx");
this.Panel1.Controls.Add(uc);

Everytime the page posts back, you have to recreate the UC, fyi.

Dim tbl As New Table
Dim tr1 As New TableRow
tbl.Rows.Add(tr1)
Dim td1 As New TableCell
tr1.Cells.Add(td1)
Dim ctl As New CustomControl
ctl.Text = "Toto"
td1.Controls.Add(ctl)

It is some old code, which was working in .net 1.1 but it should still work.

So that you can reference each created control, you have to assign a unique id to each control:

  Dim tempUserControl As UserControl

    tempUserControl = Page.LoadControl("~/UserControl1.ascx")
    tempUserControl.ID = "uniquename1"
    testPanel.Controls.Add(tempUserControl)
    tempUserControl = Page.LoadControl("~/UserControl1.ascx")
    tempUserControl.ID = "uniquename2"
    testPanel.Controls.Add(tempUserControl)

Then you can access the control on a later postback:

    Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    Dim tempUserControl As WebUserControl1
    tempUserControl = testPanel.FindControl("uniquename1")
End Sub