Form Submission Showing Null Values

I have designed a for to submit some info to a sql database, but when i enter the information to the form fields and click submit, I get an error saying that a null value cannot be submitted, when it should not be null.

Not to sound whiney, but i really need a code fix, not links to msdn pages that define properties (usually dont do this, but i have a deadline to submit this to my tech admin of my company's site)

Here is the code, and THANK YOU to anyone who helps me with this!!

<%@ Page Language="VB" MasterPageFile="~/MasterPage.master" %>

<script runat="server">

Private Sub Submitdata(ByVal Source As Object, ByVal e As EventArgs)

SqlDataSource1.Insert()

End Sub ' Submitdata

</script>

<asp:Content ID="Content1" runat="server" ContentPlaceHolderID="ContentPlaceHolder1">

<asp:sqldatasource

id="SqlDataSource1"

runat="server"

connectionstring="<%$ ConnectionStrings:clientInfoConnectionString %>"

selectcommand="SELECT Client Name,Client Address FROM Clients"

insertcommand="INSERT INTO Clients (ClientName,ClientAddress) VALUES (@CName,@CAddress)">

<insertparameters>

<asp:formparameter name="CName" formfield="Namebox" />

<asp:formparameter name="CAddress" formfield="Addressbox" />

</insertparameters>

</asp:sqldatasource>

&nbsp;Name:<br />

<asp:TextBox ID="Namebox" runat="server" /><br />

 

<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="Namebox"

ErrorMessage="Please Enter A Name"></asp:RequiredFieldValidator>

 

<br />Address:<br />

<asp:TextBox ID="Addressbox" runat="server" /><br />

 

<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="Addressbox"

ErrorMessage="Please Enter An Address"></asp:RequiredFieldValidator>

 

<br /><asp:Button ID="Submitbtn" runat="server" Text="Submit" OnClick="Submitdata" />

<br />

 

 

</asp:Content>

Thanks,

The King