Using Data Keys : GridView « ADO.net Database « ASP.Net

Using Data Keys


<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
   "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >

<body>
    <form id="form1" runat="server">
    <asp:GridView
        id="grdEmployees"
        DataSourceID="srcEmployees"
        DataKeyNames="LastName,FirstName"
        AutoGenerateSelectButton="true"
        SelectedRowStyle-CssClass="selectedRow"
        Runat="server" />
    <asp:DetailsView
        id="dtlEmployees"
        DataSourceID="srcEmployeeDetails"
        Runat="server" />
    <asp:SqlDataSource
        id="srcEmployees"
        ConnectionString="<%$ ConnectionStrings:Employees %>"
        SelectCommand="SELECT LastName,FirstName
            FROM Employees"
        Runat="server" />
    <asp:SqlDataSource
        id="srcEmployeeDetails"
        ConnectionString="<%$ ConnectionStrings:Employees %>"
        SelectCommand="SELECT * FROM Employees
            WHERE FirstName=@FirstName AND LastName=@LastName"
        Runat="server">
        <SelectParameters>
        <asp:ControlParameter
            Name="FirstName"
            ControlID="grdEmployees"
            PropertyName='SelectedDataKey("FirstName")' />
        <asp:ControlParameter
            Name="LastName"
            ControlID="grdEmployees"
            PropertyName='SelectedDataKey("LastName")' />
        </SelectParameters>
     </asp:SqlDataSource>

    </form>
</body>
</html>


File: Web.config

<configuration>
  <connectionStrings>
    <add name="Employees" 
         connectionString="Data Source=.\SQLEXPRESS;
         AttachDbFilename=|DataDirectory|MyDatabase.mdf;Integrated Security=True;User Instance=True" />
  </connectionStrings>
</configuration>

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15.	Using the RowDeleted event to catch SQL errors (C#)
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19.	Checking for Update errors using the RowUpdated event (VB)
20.	Turning off AutoGenerateColumns in the GridView control
21.	Using the RowCreated Event to programmatically change the style
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