Нужно занести изменения в DataSourse через FormView...
FormView стоит в режиме FormView1 - EditItemTemplate

<asp:SqlDataSource ID="SqlDataSourceFormView" runat="server"
ConnectionString="<%$ ConnectionStrings:WEBConnectionString %>"
onselecting="SqlDataSource1_Selecting"
SelectCommand="SELECT Diploma.IdDipl, Diploma.NameDipl, Diploma.Dat1, Diploma.Dat2, Diploma.Price, Worker.Name1 ,Worker.Name2, Worker.Name3 AS NAME, Schooll.NameLong FROM Diploma INNER JOIN Schooll ON Diploma.idSchool = Schooll.IdSchool FULL OUTER JOIN Worker ON Diploma.idWorker = Worker.IdWorker"
UpdateCommand="UPDATE Diploma SET NameDipl = @NameDipl, Dat1 = @Dat1, Dat2 = @Dat2, Price = @Price, IdSchool = @IdSchool, IdWorker = @IdWorker WHERE (IdDipl = @IdDipl)"
>

<UpdateParameters>
<asp:Parameter Name="NameDipl" />
<asp:Parameter Name="Dat1" />
<asp:Parameter Name="Dat2" />
<asp:Parameter Name="Price" />
<asp:Parameter Name="IdSchool" />
<asp:Parameter Name="IdWorker" />
<asp:Parameter Name="IdDipl" />
</UpdateParameters>
</asp:SqlDataSource>



Изменяю запись в полу NameDipl(например) -> update ни чего не обновляется