Web Custom Control

[Wender Oliveira]

I have a control that is: public class MyControl : System.Web.UI.WebControls.WebControl, IPostBackDataHandler, IPostBackEventHandler { ... } And it's method: protected override void Render(HtmlTextWriter output) { textbox1.RenderControl(output); base.Render(); } perfect... but now is the problem... when a write any word on my textbox and send a postback my textbox is cleared... I tried to implements the LoadPostData but it's never fired. I tried to sets an UniqueID and call Page.RegisterRequiresPostBack but its still doesn't working... any idea? Tkx.... Wender Oliveira .NET Programmer

[Bill Dean]

Wender, 1) make sure you keep a reference to the textbox around. 2) although you don't show it, I suspect the issue is with when you create the text box. Try:

public class MyControl : System.Web.UI.WebControls.WebControl, INamingContainer {
    private Textbox txt1;

...

    protected override CreateChildControls(){
        this.txt1 = new Textbox();
    }
    protected override void Render(HtmlTextWriter output)
    {
        this.EnsureChildControls();
        base.Render();
    }

}

Hope this helps, Bill

[Wender Oliveira]

So... if someone need this someday here is the answer... Postback only works for the object with the same UniqueID... so... I was with 2 textboxes inside a same control... each textbox with an ID... so I found 2 ways to solve this... solution 1) set the id of each textbox with the same this.UniqueID. So when postback works it will find the 2 posted values in just one key with the 2 values... the event seems like this: string[] vals = values[postDataKey]; string val1 = vals[0]; string val2 = vals[1]; solution 2) I'm using this... I created an hidden textbox with Id equals to this.UniqueID just to fire the loadpostdata event and I set the textboxes values like textbox1.ID = this.UniqueID+":txt1"; textbox2.ID = this.UniqueID+":txt2"; so event would be: string val1 = values[this.UniqueID+":txt1"]; string val2 = values[this.UniqueID+":txt2"]; So... that's all... Wender Oliveira .NET Programmer