Question

I have a TextBox inside ItemTemplate of a Repeater that is also inside a ItemTemplate.

Server side I have:

protected void txtValorMaterialAsign_TextChanged(object sender, EventArgs e)
{
    string controlId = ((TextBox)sender).ClientID;
}

which results in:

rptFilasDeUnMaterial_ctl04_txtValorMaterialAsign

But client side the Id for that control is (according to Chrome’s F12):

ctl00_contenido_wucMateriales_rptMateriales_ctl00_rptFilasDeUnMaterial_ctl01_txtValorMaterialAsign

How can I get the full Id from server side code?

Answer 1

This worked for me:

var myResult1 = FindControl("ctl00").FindControl("MainContent")
                                    .FindControl("text1").UniqueID;

returns:

ctl00$MainContent$text1

Try UniqueID on your simple findControl. If that does not work, nest the findControls.