Stone Coast Web Design's Weblog

I've been working on a project which required the use of some javascript with some server-side controls. I spent considerable time monkeying around with the Page.ClientScript.RegisterClientScriptBlock() method which registers a client script on the page. I couldn't quite get it right using this method and ended up with a much simpler approach anyway.  Every server-side web control has an "Add" method which you can use when the page loads.   In the example below, I register a click event for a button and 2 different textboxes.  Take notice that for the textboxes I use the client side id value for them (e.g. 'Header1_txtFirstName').  These values can be obtained by looking at the source code of the page in the browser.

Private Sub Page_Load(ByVal Src As Object, ByVal E As EventArgs)
        If Not Page.IsPostBack Then
            btnDelete.Attributes.Add("onClick", "return confirm('You sure you want to delete the record?');")
            txtFirstName.Attributes.Add("onClick", "document.getElementById('Header1_txtFirstName').value = '';")
            txtLastName.Attributes.Add("onClick", "document.getElementById('Header1_txtLastName').value = '';")
        End If
End Sub

Candidate Name: 
<asp:TextBox ID="txtFirstName" runat="server" Text="First Name" /> 'this becomes Header1_txtFirstName
<asp:TextBox ID="txtLastName" runat="server" Text="Last Name" /> 'this becomes Header1_txtLastName

More information on this topic here: http://dotnetslackers.com/articles/aspnet/JavaScript_with_ASP_NET_2_0_Pages_Part1.aspx