VB getting ID of imagebutton onclick

Question

Hi

In my Web site I use VB and I have a sub where I have 5 onClick imageButtons that can trigger that sub.

How can I get ID of the button which triggered that sub so I can use it in If statement?

aspx:
<asp:ImageButton ID="gb" runat="server" ImageUrl="gb.png" />
<asp:ImageButton ID="de" runat="server" ImageUrl="de.png" />
<asp:ImageButton ID="hr" runat="server" ImageUrl="hr.png" />
<asp:ImageButton ID="cz" runat="server" ImageUrl="cz.png" />
<asp:ImageButton ID="hu" runat="server" ImageUrl="hu.png" />

vb
Public sub subLanguage_onClick() Handles gb.onclick, de.onclick, hr.onclick, cz.onclick, hu.onclick

Dim strClickedButton as String

strClickedButton = ????

End sub

I wrote code on my mobile phone so maybe I made some error since I don't have an example in front of me

Thanks for helping out ;)

Answer 1

Try something like this:

Sub subLanguage_onClick( sender As Object, e As ImageClickEventArgs ) Handles gb.onclick, de.onclick, hr.onclick, cz.onclick, hu.onclick

   Dim b As ImageButton = CType(sender, ImageButton)
   Dim id As String = b.ID
   . . .

End Sub

Answer 2

You have a good answer. If you going to pass the button value say to client js, or need a referance when using a master page, then you might need/want the client id.

But, if just looking for the id, then btn.ID will work, so this:

  Protected Sub gb_Click(sender As Object, e As ImageClickEventArgs) Handles gb.Click, de.Click, hr.Click, cz.Click

        Dim Btn As ImageButton = sender

        Debug.Print("ID of button = " & Btn.ID)
        Debug.Print("ID of button = " & Btn.ClientID)
        Debug.Print("image url = " & Btn.ImageUrl)


    End Sub

So, in some cases, you might need/want to use client id if the control is used for anything more then just some case or if/then to act for each button clicked.

Regards,
Albert D. Kallal (Access MVP 2003-2017)
Edmonton, Alberta Canada

Answer 3

Hi @nickCroat ,
According to your descriptions,I suggest you could get ID or ClientID just like this:

Public sub subLanguage_onClick() Handles gb.onclick, de.onclick, hr.onclick, cz.onclick, hu.onclick  
    Dim ID As String = (CType(sender, ImageButton)).ID  
    Dim CLientID As String = (CType(sender, ImageButton)).ClientID  
End Sub  

Note: Every controls have ID, but if you have Repeater control or Updatepanel control,the ID is a long string,so you need ClientID.

Best regards,
Yijing Sun

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