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click events not working in webparts

Posted By:      Posted Date: September 04, 2010    Points: 0   Category :SharePoint
I tried to initiate the click events in my webpart.for simple test, Once I clicked the button it should set the label as empty string. But my click events not working when i integrate this webpart in my site. code    protected override void CreateChildControls()         {             base.CreateChildControls();             TextBox tx = new TextBox();             Button btn = new Button();             btn.Text = "Send to Consumer WebPart";             btn.Click+=new EventHandler(btn_Click);             this.Controls.Add(tx);             lbl = new Label();             lbl.Text = "Thank God!";                         this.Controls.Add(lbl);             this.Controls.Add(btn);        &nb

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