CODEWITHSUNDEEP
asp.neteventscontrols
TampaRich
TampaRich

Reputation: 853

Trying to Fire a ASP.NET Custom Control Button Event

I have a simple test custom control that I have created and am trying to figure out why the click event will not fire. below is the code. I simply create an instance of the control on a test page with

Page_Load of .aspx page that consumes the control protected void Page_Load(object sender, EventArgs e) { Page.Form.Controls.Add(new TestControl()); }

The page does a post back but it does not pick up the click event in the user control. Please explain what I am doing incorrectly or a better way to approach this with a specific pattern etc.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI.WebControls;
using System.Web.UI;

namespace WorldOfTest
{

public class TestControl : WebControl { private Button btn;

    protected override void OnInit(EventArgs e)
    {            
        base.OnInit(e);
    }

    protected override void EnsureChildControls()
    {
        btn = new Button();           
        this.Controls.Add(btn); 
        base.EnsureChildControls();
    }

    protected override void CreateChildControls()
    {

        btn.Click += new EventHandler(btn_Click);  
        btn.Text = "test button";                         
        base.CreateChildControls();
    }

    void btn_Click(object sender, EventArgs e)
    {
        throw new NotImplementedException();
    }

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

}
}

Thank You for your help

Upvotes: 0

Views: 1192

Answers (1)

Bala R
Bala R

Reputation: 108957

You have to add your btn to Controls collection like this

    protected override void EnsureChildControls()
    {
        this.btn = new Button();   
        Controls.Add(btn);         
        base.EnsureChildControls();
    }

EDIT:

Seems to be working fine for me once I add the button to the control's collection.

I tried this

    protected void Page_Load(object sender, EventArgs e)
    {
        Page.Form.Controls.Add(new Tester());
    }

and I get this enter image description here

Upvotes: 0

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