Using a GridView with Edit and Delete that use stored procedures

Here is how to use a GridView with Edit and Delete that use stored procedures for update and delete. First, the aspx:

        <asp:GridView ID="gvEmail" runat="server" AutoGenerateDeleteButton="True" 
        AutoGenerateEditButton="True" AutoGenerateColumns="False" DataSourceID="SqlDataSource1"
        AllowPaging="True" OnRowDeleting="gvEmail_RowDeleting" PageSize="99" OnRowUpdating="gvEmail_OnRowUpdating">
            <Columns>
                <asp:BoundField DataField="email" HeaderText="email" SortExpression="email" />
            </Columns>
        </asp:GridView>
        <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
            SelectCommand="SELECT [email] FROM [vw_Email]"
            DeleteCommand="sproc_DeleteEmail" DeleteCommandType="StoredProcedure"
            UpdateCommand="sproc_UpdateEmail" UpdateCommandType="StoredProcedure"
            >
            <DeleteParameters><asp:Parameter Name="email" Type="String" /></DeleteParameters>
            <UpdateParameters>
                <asp:Parameter Name="email" Type="String" />
                <asp:Parameter Name="newEmail" Type="String" />
            </UpdateParameters>
            </asp:SqlDataSource>

Now the code behind.

    protected void gvEmail_RowDeleting(object sender, GridViewDeleteEventArgs e) //DELETE
    {
        SqlConnection conn = new SqlConnection(SqlDataSource1.ConnectionString);
        System.Data.SqlClient.SqlCommand command = new System.Data.SqlClient.SqlCommand("sproc_DeleteEmail", conn);
        command.CommandType = System.Data.CommandType.StoredProcedure;
        conn.Open();
        string email = string.Empty;
        DataControlFieldCell cell = gvEmail.Rows[e.RowIndex].Cells[1] as DataControlFieldCell;
        gvEmail.Columns[0].ExtractValuesFromCell(
            e.Keys,
            cell,
            DataControlRowState.Normal,
            true);
        email = e.Keys[0].ToString();
        if (!string.IsNullOrEmpty(email))
        {
            command.Parameters.AddWithValue("@email", email);
            command.ExecuteNonQuery();
        }
        command.Parameters.Clear();
        conn.Close();
    }
    protected void gvEmail_OnRowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        SqlConnection conn = new SqlConnection(SqlDataSource1.ConnectionString);
        System.Data.SqlClient.SqlCommand command = new System.Data.SqlClient.SqlCommand("sproc_UpdateEmail", conn);
        command.CommandType = System.Data.CommandType.StoredProcedure;
        conn.Open();
        string newEmail = e.NewValues[0] as string;
        string email = e.OldValues[0] as string;
        if (!string.IsNullOrEmpty(email))
        {
            command.Parameters.AddWithValue("@email", email);
            command.Parameters.AddWithValue("@newEmail", newEmail);
            command.ExecuteNonQuery();
        }
        command.Parameters.Clear();
        conn.Close();
    }   

Note: Exception handling left off for brevity.
Reference: http://www.developerfusion.co.uk/show/91/7/