Placeholder does not display any tags on the HTML page. It can dynamically add controls to placeholder. To add HTML tags to placeholder, use literalcontrol,
<Body>
<Form ID = "form1" runat = "server">
<Asp: placeholder id = "placeholder1" runat = "server"/>
<Asp: button id = "button1" runat = "server" onclick = "button#click" text = "controladd"/>
<Asp: Label id = "lbmsg" runat = "server"/>
</Form>
</Body>
Protected void button#click (Object sender, eventargs E)
{
Try
{
For (INT I = 0; I <3; I ++)
{
Image IMG = new image ();
IMG. imageurl = @ "images/" + I. tostring () + ". BMP ";
Literalcontrol BR = new literalcontrol ("<br> ");
Placeholder1.controls. Add (IMG );
Placeholder1.controls. Add (BR );
}
Lbmsg. Text = "added successfully! ";
}
Catch (exception ex)
{
Lbmsg. Text = ex. message;
}
}
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