Question

I am trying to get CLientID inside the .ascx (user control mark-up) file.

While this

My id is: <%=this.ClientID%> 

renders as My id is: fracTemplateCtrl

This:

        <asp:Button ID='btnSave' runat='server' Text='Save Template' onclick='btnSave_Click' OnClientClick='return confirmSave('<%=this.ClientID%>');' /> 

renders as (inside Source code):

        <input type='submit' name='fracTemplateCtrl$btnSave' value='Save Template' onclick='return confirmSave('&lt;%=this.ClientID%>');' id='fracTemplateCtrl_btnSave' /> 

Clearly, ClientId property does not get evaluated in the second case. How do I overcome this issue? (aside from hardcoding, which is not the answer, I would like to make the user control independent)

Answer 1

You could set the OnClientClick property’s value server-side like this:

btnSave.OnClientClick = 'return confirmSave('' + this.ClientID + '')';