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I am trying to make a simple library database. I list the search results in a gridview, then i have a textbox and a button, user enters the isbn and clicks loan button. Then, if there is enough number of items (itemNumber>0) it is loaned by user. Here is the screenshot of user interface: My question is, when user clicks loan button the loan may or may not be succesful. In both cases, i print a message indicating whether loan is succesful or not, and i also want the updated gridview to be displayed. The problem is, after pressing the loan button the gridview disappears and i just see the textbox, button and the message on the screen. How can i show the updated version of gridview after pressing loan button? Here is the code file: <%@ Page Language="C#" AutoEventWireup="true" CodeFile="SearchResults.aspx.cs" Inherits="Pages_SearchResults" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> </head> <body> <form id="form1" runat="server"> <div> </div> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="ISBN" DataSourceID="SqlDataSource1" onselectedindexchanged="GridView1_SelectedIndexChanged" onrowcommand="GridView1_RowCommand"> <Columns> <asp:BoundField DataField="Title" HeaderText="Title" SortExpression="Title" /> <asp:BoundField DataField="ISBN" HeaderText="ISBN" ReadOnly="True" SortExpression="ISBN" /> <asp:BoundField DataField="AuthorName" HeaderText="AuthorName" SortExpression="AuthorName" /> <asp:BoundField DataField="AuthorlName" HeaderText="AuthorlName" SortExpression

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