asked on

Which button caused a postback

I am using asp.net 2.0 there does not appear to be an __Eventtarget control. How can i get the reference to the button pressed?

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If IsPostBack Then
Response.Write(Request.Form("__EVENTTARGET"))

'If Request.Form(btnSubmit.UniqueID).Length > 0 Then
' Response.Write("graded")
'End If
'If Request.Form(btnReset.UniqueID).Length > 0 Then
' Response.Write("reset")
'End If
End If
End Sub

Solar_Flare

i beleive the sender object is the control that caused the postback.

try adding in something like Response.Write(Sender.Name) and see what you get

rodmjay

ASKER

Well the sender does not have a name attribute, but the ToString method returns the name of the page

praneetha

protected void Page_Load(object sender, EventArgs e)
{
if (Page.IsPostBack)
{
Response.Write(sender.ToString()+"<br>");

try
{
Button obj = (Button)sender;
Response.Write(obj.ID+"<br>") ;
}
catch { }
}
}

praneetha

u have to typecast it to button and then get the id of it.

and in case button did not cause the post back its gonna throw the exception which you need to neglect or do something whatever you want to

ASKER CERTIFIED SOLUTION

appari

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GavinMannion

Why are you not just using the buttons event handler?

It will then automatically go into the correct Event Handler....

raterus

lol, THANK YOU Gavin, it's amazing how some "experts" will help someone walk right off the cliff. Obviously it should not be this difficult to know which button was pressed.

rodmjay

ASKER

Obviously, but there was some code ran in the page_load that was dependant on what button was pressed. I needed to know before the button_Click event would normally fire.

GavinMannion

Glad you found a solution but generally I would recommend just then moving the required code into it's own function and calling it from the button_click event.

My preference is to have an absolute minimum of code in the page_load event...