User control rendering to html issue

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how to solve the error

"Script control 'upProgress' is not a registered script control. Script controls must be registered using RegisterScriptControl() before calling RegisterScriptDescriptors(). Parameter name: scriptControl".

error occurred while rendering user control to html using the code

C#

private string RenderControl(Control ctrl)
    {
        StringBuilder sb = new StringBuilder();
        StringWriter sw = new StringWriter(sb);
        HtmlTextWriter hw = new HtmlTextWriter(sw);

        ctrl.RenderControl(hw);

        return sb.ToString();
    }

upProgress is an ajax update panel progress bar.

Posted 24-Aug-12 20:40pm

Member 7690452

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AmitGajjar 25-Aug-12 2:53am

HtmlTextWriter is your user control ? if so, please post code of that. also post the code of your update panel (aspx page code)

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Christian Graus · Answer 1 · 2012-08-24T23:22:00

Solution 1

You've got a script control in your page called upProgress and it's not registerd. That's what the error says. If you think that is wrong, you need to post code and explain why you disagree with what the error says.

Posted 24-Aug-12 23:22pm

Christian Graus