System.NullReferenceException ???

Collapse
This topic is closed.
X
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Michael Murschell
    #1

    System.NullReferenceException ???

    When I close my application, it always gives me this error at line...

    MyBase.Dispose( disposing)

    The error...

    An unhandled exception of type 'System.NullRef erenceException ' occurred in
    system.windows. forms.dll

    Additional information: Object reference not set to an instance of an
    object.


    Here is what I am doing in the form...
    I have a Datagrid on a form. I have a DataSet that I am constantly updating
    the rows with data I am pulling from some webservices.

    Thank you for your help.


    Tags: None
    • Michael Murschell
      #2
      Re: System.NullRefe renceException ???

      Oh, I have a Timer (System.Timers. Timer) that runs every 10 seconds that
      calls the sub that updates the DataSet.

      "Michael Murschell" <mmurschell@gon elco.com> wrote in message
      news:elT2CueWEH A.2288@TK2MSFTN GP10.phx.gbl...[color=blue]
      > When I close my application, it always gives me this error at line...
      >
      > MyBase.Dispose( disposing)
      >
      > The error...
      >
      > An unhandled exception of type 'System.NullRef erenceException ' occurred in
      > system.windows. forms.dll
      >
      > Additional information: Object reference not set to an instance of an
      > object.
      >
      >
      > Here is what I am doing in the form...
      > I have a Datagrid on a form. I have a DataSet that I am constantly[/color]
      updating[color=blue]
      > the rows with data I am pulling from some webservices.
      >
      > Thank you for your help.
      >
      >[/color]


        Comment

        • The Grim Reaper
          #3
          Re: System.NullRefe renceException ???

          Make sure you stop the timer before you Close or Dispose the form.
          I'd do this in the Form_Closing Event - just Timer.Stop or Timer.Enabled =
          False.
          If that doesn't help, trace the error back through the call stack using the
          debugging features of the IDE.
          _______________ _______________ __
          The Grim Reaper

          "Michael Murschell" <mmurschell@gon elco.com> wrote in message
          news:%230jVYxeW EHA.556@tk2msft ngp13.phx.gbl.. .[color=blue]
          > Oh, I have a Timer (System.Timers. Timer) that runs every 10 seconds that
          > calls the sub that updates the DataSet.
          >
          > "Michael Murschell" <mmurschell@gon elco.com> wrote in message
          > news:elT2CueWEH A.2288@TK2MSFTN GP10.phx.gbl...[color=green]
          > > When I close my application, it always gives me this error at line...
          > >
          > > MyBase.Dispose( disposing)
          > >
          > > The error...
          > >
          > > An unhandled exception of type 'System.NullRef erenceException ' occurred[/color][/color]
          in[color=blue][color=green]
          > > system.windows. forms.dll
          > >
          > > Additional information: Object reference not set to an instance of an
          > > object.
          > >
          > >
          > > Here is what I am doing in the form...
          > > I have a Datagrid on a form. I have a DataSet that I am constantly[/color]
          > updating[color=green]
          > > the rows with data I am pulling from some webservices.
          > >
          > > Thank you for your help.
          > >
          > >[/color]
          >
          >[/color]


            Comment

            Previous template Next
            Working...