How do I get parameter values into the InsertMethod for an ObjectDataSource?

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ASP.NET

data-binding

Hi,

Have a DataGrid on a web form which is bound to an ObjectDataSource. Update, Delete and Retrieve operations all work fine. I cannot, however, find any way to create a new record.

I have tried simply putting text boxes on the screen to accept values for the new record and providing a 'Create' button, but when I get into the event handler and manually call Insert() on the ObjectDataSource, it says the parameters collection is empty. This is despite the fact that I have the following in my .aspx file:

<asp:objectdatasource id="ods" runat="server" typename="TYPENAME_HERE" dataobjecttypename="BLL_OBJECT_NAME" insertmethod="InsertCharacter" selectmethod="RetrieveAllCharacters"
    updatemethod="UpdateCharacter" deletemethod="DeleteCharacter">
    <insertparameters>
        <asp:controlparameter name="FirstName" controlid="newFirstName" propertyname="Text" />
        <asp:controlparameter name="LastName" controlid="newLastName" propertyname="Text" />
        <asp:controlparameter name="Gender" controlid="newGender" propertyname="Text" />
    </insertparameters>
</asp:objectdatasource>

I just can't find any way to get this working, despite reading everything I can find on this subject. Does anyone know how to do this or any way to get a new record created in a database via an ObjectDataSource?

Kind wishes ~ Patrick