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Detailsview edit not saving

Posted By:      Posted Date: September 08, 2010    Points: 0   Category :ASP.Net
Hello! I would like to edit a record in detailsview and it's not working. After I click "edit" it show the view in edit mode and if I change anything and click save no error is returned; just detailsview in "read/only mode", but without changes. This is the aspx code: <asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">     <h2>         Urejanje kontaktnih podatkov     </h2>     <p>         <asp:TextBox ID="txtKontaktID" Visible="false" runat="server"></asp:TextBox>         <asp:SqlDataSource ID="SqlDataSource1" runat="server"              ConnectionString="<%$ ConnectionStrings:testConnectionString %>"              ProviderName="<%$ ConnectionStrings:testConnectionString.ProviderName %>"              SelectCommand="SELECT tblKontakt.*, tblStranka.strSkrajsanNaziv FROM tblKontakt INNER JOIN tblStranka ON tblKontakt.StrankaID = tblStranka.StrankaID                        

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