ASP button with Parameter to Gridview

[free4cd]

I have a page status.aspx that contains serveral buttons such as 30 days, 60 days & 90 days. I would like to pass the parameters to my existing gridview depending on which button has been clicked. My code behide for the gridview as follows;\[code\] Dim cmd As SqlCommand = New SqlCommand("up_AcctStatus", conn) cmd.CommandType = CommandType.StoredProcedure Dim paramNumOfDays As New SqlParameter("@NumOfDays", SqlDbType.Int) paramNumOfDays.Value = "http://stackoverflow.com/questions/14464493/??? 30, 60 or 90 ???" cmd.Parameters.Add(paramNumOfDays)\[/code\]GridView1.DataSource = cmd.ExecuteReader() GridView1.DataBind()