DetailsView Does not Carry Some Fields over to DetailsViewUpdatedEventArgs and DetailsViewInsertedEventArgs - asp.net

Question

I have a few fields using asp:TemplateField. The code sample for user name and password is below -
<asp:TemplateField HeaderText="User Name" SortExpression="User_Name">
<EditItemTemplate>
<ISEP:PFTextBox ID="User_NameControl" runat="server" Text='<%# Bind("User_Name") %>'
CssClass="DetView TextBox DataWindowControl" />
<asp:Label runat="server" ID ="User_NameRequiredStar" Text="*" CssClass="DetView Label DataWindowControl" ForeColor="Red" style="display: none;"/>
<asp:CustomValidator id="CustomValidatorUserNameExisting" ControlToValidate="User_NameControl" ClientValidationFunction="UserNameExistingValidate"
Display="Static" ErrorMessage="User Name already exists. Please enter a different user name." ForeColor="red" runat="server" Enabled="false"/>
<asp:RequiredFieldValidator
ID="User_NameControlRequiredFieldValidator" runat="server" ControlToValidate="User_NameControl"
ErrorMessage="<%$ AppSettings: RequiredErrorMessage %>" Enabled="false"></asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="User_NameMaxLengthValidator" runat="server"
ErrorMessage="<%$ AppSettings: MaxLengthErrorMessage %>" ValidationExpression="^(.|\n){0,80}$" ControlToValidate="User_NameControl"></asp:RegularExpressionValidator>
</EditItemTemplate>
<InsertItemTemplate>
<ISEP:PFTextBox ID="User_NameControl" runat="server" Text='<%# Bind("User_Name") %>'
CssClass="DetView TextBox DataWindowControl" />
<asp:Label runat="server" ID ="User_NameRequiredStar" Text="*" CssClass="DetView Label DataWindowControl" ForeColor="Red" style="display: none;"/>
<asp:CustomValidator id="CustomValidatorUserNameExisting" ControlToValidate="User_NameControl" ClientValidationFunction="UserNameExistingValidate"
Display="Static" ErrorMessage="User Name already exists. Please enter a different user name." ForeColor="red" runat="server" Enabled="false"/>
<asp:RequiredFieldValidator
ID="User_NameControlRequiredFieldValidator" runat="server" ControlToValidate="User_NameControl"
ErrorMessage="<%$ AppSettings: RequiredErrorMessage %>" Enabled="false"></asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="User_NameMaxLengthValidator" runat="server"
ErrorMessage="<%$ AppSettings: MaxLengthErrorMessage %>" ValidationExpression="^(.|\n){0,80}$" ControlToValidate="User_NameControl"></asp:RegularExpressionValidator>
</InsertItemTemplate>
<ItemTemplate>
<ISEP:PFLabel ID="User_NameLabel" runat="server" Text='<%# Bind("User_Name") %>'
CssClass="DetViewText Label DataWindowControl" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Password" SortExpression="User_Password">
<EditItemTemplate>
<ISEP:PFTextBox ID="User_PasswordControl" TextMode="Password" runat="server" Text='<%# Bind("User_Password") %>'
CssClass="DetView TextBox DataWindowControl" />
<asp:Label runat="server" ID ="User_PasswordRequiredStar" Text="*" CssClass="DetView Label DataWindowControl" ForeColor="Red" style="display: none;"/>
<asp:RequiredFieldValidator
ID="User_PasswordControlRequiredFieldValidator" runat="server" ControlToValidate="User_PasswordControl"
ErrorMessage="<%$ AppSettings: RequiredErrorMessage %>" Enabled="false"></asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="User_PasswordMaxLengthValidator" runat="server"
ErrorMessage="<%$ AppSettings: MaxLengthErrorMessage %>" ValidationExpression="^(.|\n){0,80}$" ControlToValidate="User_PasswordControl"></asp:RegularExpressionValidator>
</EditItemTemplate>
<InsertItemTemplate>
<ISEP:PFTextBox ID="User_PasswordControl" TextMode="Password" runat="server" Text='<%# Bind("User_Password") %>'
CssClass="DetView TextBox DataWindowControl" />
<asp:Label runat="server" ID ="User_PasswordRequiredStar" Text="*" CssClass="DetView Label DataWindowControl" ForeColor="Red" style="display: none;"/>
<asp:RequiredFieldValidator
ID="User_PasswordControlRequiredFieldValidator" runat="server" ControlToValidate="User_PasswordControl"
ErrorMessage="<%$ AppSettings: RequiredErrorMessage %>" Enabled="false"></asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="User_PasswordMaxLengthValidator" runat="server"
ErrorMessage="<%$ AppSettings: MaxLengthErrorMessage %>80" ValidationExpression="^(.|\n){0,80}$" ControlToValidate="User_PasswordControl"></asp:RegularExpressionValidator>
</InsertItemTemplate>
</asp:TemplateField>
I do not why User_Name is passed to DetailsViewUpdatedEventArgs and DetailsViewInsertedEventArgs but User_Password is not.
Except for OnItemUpdated and OnItemInserted, where can I debug these fields?
Thanks,