Render control that need ScriptManager, programmatically.

Question

User2070100822 posted

Hi..

I am trying to render control(ComboBox) programmatically, and i am getting error that tell me that i have to add ScriptManager to the page.

But, i did that, and still its not working:

override protected void OnInit( EventArgs e )
		{
			this.Load += new System.EventHandler( this.Page_Load );
			Page.Init += delegate
			             	{
				if (ScriptManager.GetInstance(Page) != null) return;
				var sMgr = new ScriptManager();
				Page.Form.Controls.AddAt(0, sMgr);
			};
			base.OnInit( e );
		}

And the render control html is:

protected override void Render( System.Web.UI.HtmlTextWriter writer )

{

writer.WriteLine(Html.RenderControl(ComboBoxObject));

}

protected override void Render( System.Web.UI.HtmlTextWriter writer )
		{
			writer.WriteLine(Html.RenderControl(ComboBoxObject));
		}

The RenderControl Function:

static public string RenderControl(Control ctrl)
		{
			var sb = new StringBuilder();
			var tw = new StringWriter(sb);
			var hw = new HtmlTextWriter(tw);

			ctrl.RenderControl(hw);
			return sb.ToString();
		}

Any idea...

Thanks...

Answer 1

User-184166755 posted

Exactly, you need to add a ScriptManager for partial render. 

It's something like this:

  <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

ScriptManager manages ASP.NET AJAX script libraries and script files, partial-page rendering...

Hope this helps you.

Answer 2

User2070100822 posted

Hi..

As you can see in the code i mention above, i did include ScriptManager in the code.

So, what do i need?

Answer 3

User-1011786642 posted

 Check this http://forums.asp.net/p/1039254/1777798.aspx