Validating Edits in Grids

When using the Grid Web Controld a lot of times I find myself needing to customize the edit functionality to use validation. The following are the procedures that I use to customize the Data Grid Web Controld.

In order to implement a customization in a datagrid you need to implement a template

<asp:TemplateColumn HeaderText="Gift Amount">
<itemtemplate>
<asp:label id="lblAward_Amount" text='<%# DataBinder.Eval(Container.DataItem, "Gift_Amount", "{0:c}") %>' Runat="server" />
</itemtemplate>
<edititemtemplate>
<asp:textbox ID="txtGift_Amount2" text='<%# DataBinder.Eval(Container.DataItem, "Gift_Amount", "{0:c}") %>' runat="server" />
<asp:regularexpressionvalidator id="Regularexpressionvalidator1" runat="server" ControlToValidate="txtGift_Amount2"
ErrorMessage="Money Values only example 20.00 no commas!" ValidationExpression="\d*.\d{2}"></asp:regularexpressionvalidator></asp:boundcolumn>
</edititemtemplate>
</asp:TemplateColumn>

To access this in the code behind you must using the following:

// This will access the control inside the data grid.
tempGiftAmount = (((TextBox)e.Item.FindControl("txtGift_Amount2")).Text);