Question

I have a usercontrol page which has a label on it and the onLoad code for the label is written in C#. The page I added the usercontrol to has a button. Is there any way for me to code the usercontrol so that it changes the label in response to the button press? Preferably this would be done from the usercontrol page in C#. I’m not sure if it would affect anything about this but the non-usercontrol page has the code behind done in VB.

Thanks for any insight on this.

Answer 1

In the code for your Page.aspx add a declarative event handler for the button click and add the following code within it alongside the other logic-

C#

Protected void Button_OnClick(object sender, eventargs e)
{
   //Other logic responding to the click event within the page
   LabelUserControl.PageButton_Click(sender, e); 
}

VB.NET

Protected Sub PageButton_Click(sender As Object, e As System.EventArgs) Handles PageButton.Click 
   LabelUserControl.PageButton_Click(sender, e)
End Sub

or (if the user control label change is the only response to the click)-

C#

Protected void Page_Load(object sender, eventargs e)
{
   PageButton.Click += LabelUserControl.PageButton_Click;
}

VB.NET

Sub Page_Load(ByVal Sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    AddHandler PageButton.Click, AddressOf LabelUserControl.PageButton_Click
End Sub

In your user control-

public void PageButton_Click(object sender, eventargs e)
{
  // change label text
}

The method should be public so it can be accessed from the page.