Deletion using SqlDataSource Control : SqlDataSource « ADO.net Database « ASP.Net






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  2. ADO.net Database
  3. SqlDataSource

Deletion using SqlDataSource Control


<%@ Page Language="C#" %>
<script runat="server">
    void deptSource_Deleted(object sender,SqlDataSourceStatusEventArgs e)
    {
      if (e.Exception == null)
      {
        if (e.AffectedRows == 1)
        {
          lblResult.Text = "Record deleted successfully.";
        }
        else
        {
          lblResult.Text = "An error occurred during the delete operation.";
        }
      }
      else
      {
        lblResult.Text = "An error occurred while attempting to delete the row." + e.Exception.Message;
        e.ExceptionHandled = true;
      }
    }
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Deletion using SqlDataSource Control</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>        
        <asp:SqlDataSource ID="deptSource" runat="server"
            ProviderName="System.Data.SqlClient" 
            ConnectionString="<%$ ConnectionStrings:AdventureWorks %>"
            SelectCommand="Select DepartmentID, Name, GroupName, ModifiedDate from HumanResources.Department"
            DeleteCommand="Delete from HumanResources.Department Where DepartmentID=@original_DepartmentID"            
            OldValuesParameterFormatString="original_{0}" OnDeleted="deptSource_Deleted">
            <DeleteParameters>                
                <asp:Parameter Type="Int32" Name="DepartmentID"></asp:Parameter>
            </DeleteParameters>
        </asp:SqlDataSource>
        <asp:GridView ID="deptView" 
            AutoGenerateColumns="False" 
            runat="server" 
            DataSourceID="deptSource"
            HeaderStyle-HorizontalAlign="Center" 
            HeaderStyle-Font-Bold="True"
            HeaderStyle-BackColor="blue" 
            HeaderStyle-ForeColor="White"
            DataKeyNames="DepartmentID">
            <Columns>
                <asp:TemplateField HeaderText="Delete">
                    <ItemTemplate>
                        <asp:Button ID="btnDelete" Text="Delete" runat="server"
                            OnClientClick="return confirm('Are you sure you want to delete this record?');"
                            CommandName="Delete" />
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:BoundField HeaderText="DepartmentID" DataField="DepartmentID" />
                <asp:BoundField HeaderText="Department Name" DataField="Name" />
                <asp:BoundField HeaderText="Group Name" DataField="GroupName" />
                <asp:BoundField HeaderText="Last Modified Date" DataField="ModifiedDate" />
            </Columns>
        </asp:GridView>            
        <asp:Label ID="lblResult" runat="server" ForeColor="DarkRed"/>
    </div>
    </form>
</body>
</html>








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