ASPX: Argument passing to button click handler

[kenm]

Hi all,

I'm new to ASPX programming so please forgive me if this is simple.

I'm trying to create a page that has several buttons on it and I want to have a single subroutine to handle all of the button clicks. I want to pass "CommandName" and "CommandArgument" parameters to the subroutine but when I code this up I get a "Server Runtime Error" when I click on a button.

Any help would be greatly appreciated.

Thanks,
Ken

Here's my code:

 
    Protected Sub Button_Click(ByVal sender As Object, ByVal e As CommandEventArgs)
        Response.Write("Button_Click: " & e.CommandArgument)
    End Sub

<asp:Button ID="Button1" runat="server" Text="Open" onclick="Button_Click" CommandArgument="open" CommandName="router" />
<asp:Button ID="Button2" runat="server" Text="Close" onclick="Button_Click" CommandArgument="open" CommandName="router" /> 

[kenm]

More data...

So I was able to turn off customErrors and I got the following error message:

"Unable to cast object of type 'System.EventArgs' to type 'System.Web.UI.WebControls.CommandEventArgs'."

This makes some sense since I changed "ByVal e As System.EventArgs" to "ByVal e As CommandEventArgs".

So my question now is "How do I get to 'CommandName' and 'CommandArgument' from 'System.EventArgs'?"

As you can plainly see I don't really know what I'm doing here.

Thanks,
Ken

[tenholde]

Protected Sub Button_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim aButton As Button
        aButton = CType(sender, Button)
        Response.Write("Button_Click: " & aButton.CommandArgument)
    End Sub

tenholde

[kenm]

Thank You!

One more question...

Is the "Handles Button1.Click" at the end necessary? It seems like it works without it and since I want to have Button1, Button2, Button3, etc. would that cause any problems?

Thanks again,
Ken

[tenholde]

Not necessary as you reference the subroutine in the HTML.

tenholde