Catch the Cell value in Row_Updating in Gridview

This for only in Bound fields: 

DataControlFieldCell cell = gvUser.Rows[e.RowIndex].Cells[1] as DataControlFieldCell;

        gvUser.Columns[1].ExtractValuesFromCell(e.NewValues, cell, DataControlRowState.Edit, true);

        foreach (string key in e.NewValues.Keys)

        {

            EditUserMail(e.NewValues[key].ToString());

        }

Inline:

  asp:BoundField DataField="Email" HeaderText="Email"

Where EditUserMail can be any function.

This is for Template fields:

TextBox txtDate = (TextBox)gvUser.Rows[e.RowIndex].FindControl("txtDate");

        EditApprovedDate(txtDate.Text);

 asp:TemplateField HeaderText="Approved Till"

                ItemTemplate

                    asp:Label ID="Label1" runat="server" Text='%# Eval("Comment") %

asp:Label

                

ItemTemplate

           

EditItemTemplate

           

asp:TextBox ID="txtDate" Text=

%#Eval("Comment") %

runat="server"

asp:TextBox

        

cc1:CalendarExtender ID="CalendarExtender1" runat="server" TargetControlID="txtDate"

                 Animated="true" PopupPosition="Right" FirstDayOfWeek="Monday"

          

cc1:CalendarExtender

              

           EditItemTemplate

            

asp:TemplateField

              

            

            

Where EditApprovedDate can be any Function.

Thanks,

Nitin Sharma