FindControl does not find a button embedded within a FormView

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I'm trying to code this function that toggles the System.Web.UI.Controls.Enabled property.

I could actually read a TextBox off a Webpage, that is NOT embedded, however, I couldn't "reach" the Button embedded within the FormView (ID=Envelope)

C#

protected void btnEdit_Click(object sender, EventArgs e)
    {
        toggleButton_Enabled("btnSave", true);
    }
    private void toggleButton_Enabled(String _ButtonID, Boolean _enable)
    {
        /*
         * This function sets a System.Web.UI.WebControls.Button.Enabled property to 'true' if it is 'false', and,
         * conversely, sets System.Web.UI.WebControls.Button.Enabled property to 'false' if it is 'false'.
         *
        * @param TextBoxID must be a System.Web.UI.WebControls.Button
        * @param _enable - forces the control to be enabled
        */
        Button mpButton = new Button();
        mpButton = (Button)this.FindControl(_ButtonID);
        mpButton = (Button)FindControl(_ButtonID);
        if (mpButton != null && mpButton.Enabled)
        {
            mpButton.Enabled = false;
        }
        else if (mpButton != null && !(mpButton.Enabled))
        {
            mpButton.Enabled = true;
        }
        else if (mpButton != null && _enable)
        {
            mpButton.Enabled = false;
        }
        else if (mpButton == null)
        {
            throw new Exception(mpButton.ToString() + "is null");
        }
    }

I'm using VS 2008 / Win XP SP 3 / .NET 3.5 SP 1. Complete source code here. Screenshots here.

I'm following this MSDN article.

:confused:

Version information

Microsoft Visual Studio 2008
Version 9.0.21022.8 RTM
Microsoft .NET Framework
Version 3.5 SP1

Installed Edition: Professional

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<pre>

Posted 31-Aug-10 11:24am

jon-80

Updated 31-Aug-10 11:26am

v3

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Christian Graus · Accepted Answer · 2010-08-31T11:27:00

Solution 1

FindControl isn't going to find a control inside a template, because if you have a template, with more than one row, how does it know which one to find ? You need to follow the advice you were given before, instead of doing it this way. FindControl is, in any case, an ugly hack, I try to avoid it.

Posted 31-Aug-10 11:27am

Christian Graus

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jon-80 31-Aug-10 17:28pm

Thanks for that, any idea what might work?