Forms Data Controls :: Send Email After Loaded To Supply Notification

I have a form in formview which uploads data to my mssql databse fine. I want to send an e-mail after the data is uploaded to supply notification that someone has filled out the form. I am trying to use OnItemInserted to achieve this. This is the error message I get:

Compiler Error Message: CS0122: 'Personal_Loans.ClientappFormView_ItemInserted(object,
System.Web.UI.WebControls.FormViewInsertedEventArgs)' is inaccessible due to its protection level

linked to the line of code for the formview:

<asp:FormView ID="Clientapp" runat="server" DataKeyNames="Key" DataSourceID="ClientData" DefaultMode="Insert" OnItemInserted="ClientappFormView_ItemInserted" >

My code on the page behind is this:

void ClientappFormView_ItemInserted(Object sender, FormViewInsertedEventArgs e)
{
TextBox email = (TextBox)Clientapp.Row.FindControl("email");
DropDownList title = (DropDownList)Clientapp.Row.FindControl("title");

This is then followed by the e-mail sending code. The servers CAS level is set to "full" I have tried using capitals and all lowercase for OnItemInserted I get the same result.