Odd sqldatasource insert behavior

I have a sqldatasource (code listed below) whose insert Paramaters are control parameters. My aspx page has a textbox and a submit button. the button onclick runs the sqdatasource1.insert.

What I get is every other insert inserts the text in textbox2 and every other insert enters nothing for the namecust value. I have a required field validator which correctly prevents submission if textbox2 is empty.

How do I fix this?

:<code>

<asp:PanelID="Panel1"runat="server"Height="50px"Width="548px">

<asp:ButtonID="Button1"runat="server"Text="New Prospect"ValidationGroup="insertCust"/>

<asp:RequiredFieldValidatorID="RequiredFieldValidator1"runat="server"ControlToValidate="TextBox2"

ErrorMessage="Prospect Name can not be blank"ValidationGroup="insertCust"></asp:RequiredFieldValidator>

<asp:TextBoxID="TextBox2"runat="server"Width="330px"ValidationGroup="insertCust"></asp:TextBox></asp:Panel>

<asp:SqlDataSourceID="SqlDataSource2"runat="server"ConnectionString="<%$ ConnectionStrings:AccPac2ConnectionString %>"

SelectCommand="SELECT DISTINCT CODETERR FROM dbo.F_arcus() AS F_arcus_1 WHERE (DATEINAC = 0) AND (rtrim(CODETERR) <>'')">

</asp:SqlDataSource>

<asp:SqlDataSourceID="SqlDataSource1"runat="server"ConnectionString="<%$ ConnectionStrings:AccPac2ConnectionString %>"

InsertCommand="INSERT INTO dbo.BudgetProspects(NameCust, CodeTerr) VALUES (@.Namecust, @.codeterr)"

SelectCommand="SELECT CustomerID, NameCust FROM dbo.BudgetProspects WHERE (CodeTerr = @.codeterr)"

UpdateCommand="UPDATE dbo.BudgetProspects SET NameCust = @.namecust">

<UpdateParameters>

<asp:ParameterName="namecust"/>

</UpdateParameters>

<SelectParameters>

<asp:ControlParameterControlID="RadioButtonList1"Name="codeterr"PropertyName="SelectedValue"/>

</SelectParameters>

<InsertParameters>

<asp:ControlParameterControlID="textbox2"Name="Namecust"PropertyName="text"/>

<asp:ControlParameterControlID="RadioButtonList1"Name="codeterr"PropertyName="SelectedValue"/>

</InsertParameters>

</asp:SqlDataSource>

</code>

codebehind button_click:

<code>

ProtectedSub Button1_Click(ByVal senderAsObject,ByVal eAs System.EventArgs)Handles Button1.Click

IfNot TextBox2.TextIsNothingThen

SqlDataSource1.Insert()

TextBox2.Text =""

EndIf

EndSub

</code>

Never mind, complete stupidity on my part the altenate row style had white background and white text.