visual basic 2005, this is my code:
Dim frminterfacea As New frmInterface
frminterfacea.S how()
this loaded up the form frminterface until today. it worked fine yesterday, no change in code, now i get this message at runtime:
ArgumentExcepti on [sic] was unhandled
Cannot bind to the property or column Item Name on the DataSource.
Parameter name: dataMember
what went wrong?
5  16943 
any change in the database?
are you sure no one changed the code / DB either?
im not sure what you mean. There were no code changes. the part of the code that gets highlighted is "form.show" . would this be related to any issues with the form it's supposed to load up, or is this somehow just the wrong code?
The issue would be that you would have entered some data into the database..
and the data is causing some exceptions (the data, not the scehma).
the show would throw an exception, but if you look at the stack trace it would lead to the Form load event handler for that form.
Try debugging it, and check where in the form load the application throws the exception.
cheers
ok i think i see where this is going. i did change the names of some of the datasource names, but none of them were actually used. would that affect it?
this is what got attached to my clipboard when i clicked "copy extension detail to the clipboard":
System.Argument Exception was unhandled
Message="Cannot bind to the property or column Item Name on the DataSource.
Parameter name: dataMember"
ParamName="data Member"
Source="System. Windows.Forms"
StackTrace:
at System.Windows. Forms.BindToObj ect.CheckBindin g()
at System.Windows. Forms.BindToObj ect.SetBindingM anagerBase(Bind ingManagerBase lManager)
at System.Windows. Forms.Binding.S etListManager(B indingManagerBa se bindingManagerB ase)
at System.Windows. Forms.ListManag erBindingsColle ction.AddCore(B inding dataBinding)
at System.Windows. Forms.BindingsC ollection.Add(B inding binding)
at System.Windows. Forms.BindingCo ntext.UpdateBin ding(BindingCon text newBindingConte xt, Binding binding)
at System.Windows. Forms.Control.U pdateBindings()
at System.Windows. Forms.Control.O nBindingContext Changed(EventAr gs e)
at System.Windows. Forms.Control.O nParentBindingC ontextChanged(E ventArgs e)
at System.Windows. Forms.Control.O nBindingContext Changed(EventAr gs e)
at System.Windows. Forms.Control.O nParentBindingC ontextChanged(E ventArgs e)
at System.Windows. Forms.Control.O nBindingContext Changed(EventAr gs e)
at System.Windows. Forms.Control.s et_BindingConte xtInternal(Bind ingContext value)
at System.Windows. Forms.Container Control.set_Bin dingContext(Bin dingContext value)
at System.Windows. Forms.Container Control.get_Bin dingContext()
at System.Windows. Forms.Control.g et_BindingConte xtInternal()
at System.Windows. Forms.Control.g et_BindingConte xt()
at System.Windows. Forms.Control.g et_BindingConte xtInternal()
at System.Windows. Forms.Control.g et_BindingConte xt()
at System.Windows. Forms.Control.U pdateBindings()
at System.Windows. Forms.Control.O nBindingContext Changed(EventAr gs e)
at System.Windows. Forms.Control.O nParentBindingC ontextChanged(E ventArgs e)
at System.Windows. Forms.Control.O nBindingContext Changed(EventAr gs e)
at System.Windows. Forms.Control.O nParentBindingC ontextChanged(E ventArgs e)
at System.Windows. Forms.Control.O nBindingContext Changed(EventAr gs e)
at System.Windows. Forms.Container Control.OnCreat eControl()
at System.Windows. Forms.Form.OnCr eateControl()
at System.Windows. Forms.Control.C reateControl(Bo olean fIgnoreVisible)
at System.Windows. Forms.Control.C reateControl()
at System.Windows. Forms.Control.W mShowWindow(Mes sage& m)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.Scrollabl eControl.WndPro c(Message& m)
at System.Windows. Forms.Container Control.WndProc (Message& m)
at System.Windows. Forms.Form.WmSh owWindow(Messag e& m)
at System.Windows. Forms.Form.WndP roc(Message& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage& m)
at System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.DebuggableC allback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows. Forms.SafeNativ eMethods.ShowWi ndow(HandleRef hWnd, Int32 nCmdShow)
at System.Windows. Forms.Control.S etVisibleCore(B oolean value)
at System.Windows. Forms.Form.SetV isibleCore(Bool ean value)
at System.Windows. Forms.Control.S how()
at Mando_Books_Sal es_Interfae.frm EmployeeID.btnO K1_Click(Object sender, EventArgs e) in C:\Documents and Settings\mike\D esktop\Mando_Bo oks_Sales_Inter fae\Mando_Books _Sales_Interfae \frmEmployeeID. vb:line 21
at System.Windows. Forms.Control.O nClick(EventArg s e)
at System.Windows. Forms.Button.On Click(EventArgs e)
at System.Windows. Forms.Button.Pe rformClick()
at System.Windows. Forms.Form.Proc essDialogKey(Ke ys keyData)
at System.Windows. Forms.TextBoxBa se.ProcessDialo gKey(Keys keyData)
at System.Windows. Forms.Control.P reProcessMessag e(Message& msg)
at System.Windows. Forms.Control.P reProcessContro lMessageInterna l(Control target, Message& msg)
at System.Windows. Forms.Applicati on.ThreadContex t.PreTranslateM essage(MSG& msg)
at System.Windows. Forms.Applicati on.ThreadContex t.System.Window s.Forms.UnsafeN ativeMethods.IM soComponent.FPr eTranslateMessa ge(MSG& msg)
at System.Windows. Forms.Applicati on.ComponentMan ager.System.Win dows.Forms.Unsa feNativeMethods .IMsoComponentM anager.FPushMes sageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows. Forms.Applicati on.ThreadContex t.RunMessageLoo pInner(Int32 reason, ApplicationCont ext context)
at System.Windows. Forms.Applicati on.ThreadContex t.RunMessageLoo p(Int32 reason, ApplicationCont ext context)
at System.Windows. Forms.Applicati on.Run(Applicat ionContext context)
at Microsoft.Visua lBasic.Applicat ionServices.Win dowsFormsApplic ationBase.OnRun ()
at Microsoft.Visua lBasic.Applicat ionServices.Win dowsFormsApplic ationBase.DoApp licationModel()
at Microsoft.Visua lBasic.Applicat ionServices.Win dowsFormsApplic ationBase.Run(S tring[] commandLine)
at Mando_Books_Sal es_Interfae.My. MyApplication.M ain(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.v b:line 81
at System.AppDomai n.nExecuteAssem bly(Assembly assembly, String[] args)
at System.AppDomai n.ExecuteAssemb ly(String assemblyFile, Evidence assemblySecurit y, String[] args)
at Microsoft.Visua lStudio.Hosting Process.HostPro c.RunUsersAssem bly()
at System.Threadin g.ThreadHelper. ThreadStart_Con text(Object state)
at System.Threadin g.ExecutionCont ext.Run(Executi onContext executionContex t, ContextCallback callback, Object state)
at System.Threadin g.ThreadHelper. ThreadStart()
i don't know if this is what you are looking for, but i remember there was some other error list but i can't remember how i came across it. how do i fix this?
Was the datasource name changed which is bound to the contriols?
What about re binding the controls to your datasource!! have you tried that ?
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