【请教】异步调用中出现的问题，很奇怪的问题

Question

本帖最后由 darthhiker 于 2010-06-29 02:06:38 编辑

Answer 1

this.bindingSource.DataSource=_dataSet;
  this.bindingSource.DataMember=_dataSet.Tables[0].TableName;
  this.dataGridView.DataSource = _dataSet;
还没有试过调用2次DataSource

Answer 2

代码应该是
this.bindingSource.DataSource=_dataSet;
  this.bindingSource.DataMember=_dataSet.Tables[0].TableName;
  this.dataGridView.DataSource = this.bindingsource；
笔误了。

Answer 3

第一个错的详细错误信息未处理 System.Reflection.TargetInvocationException
  Message="调用的目标发生了异常。"
  Source="mscorlib"
  StackTrace:
       在 System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
       在 System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
       在 System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
       在 System.Delegate.DynamicInvokeImpl(Object[] args)
       在 System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)
       在 System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
       在 System.Threading.ExecutionContext.runTryCode(Object userData)
       在 System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
       在 System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
       在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       在 System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)
       在 System.Windows.Forms.Control.InvokeMarshaledCallbacks()
       在 System.Windows.Forms.Control.WndProc(Message& m)
       在 DevExpress.XtraEditors.Container.EditorContainer.WndProc(Message& m)
       在 DevExpress.XtraGrid.GridControl.WndProc(Message& m)
       在 System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
       在 System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
       在 System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
       在 System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
       在 System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
       在 System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
       在 System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
       在 System.Windows.Forms.Application.Run(Form mainForm)
       在 AnalysisClient.Program.Main() 位置 C:\Users\Administrator\Documents\Visual Studio 2008\Projects\AnalysisProject\AnalysisClient\Program.cs:行号 17
       在 System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
       在 System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)
       在 System.Runtime.Hosting.ManifestRunner.Run(Boolean checkAptModel)
       在 System.Runtime.Hosting.ManifestRunner.ExecuteAsAssembly()
       在 System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext, String[] activationCustomData)
       在 System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext)
       在 System.Activator.CreateInstance(ActivationContext activationContext)
       在 Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone()
       在 System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       在 System.Threading.ThreadHelper.ThreadStart()
  InnerException: System.ArgumentNullException
       Message="键不能为空。\r\n参数名: key"
       Source="mscorlib"
       ParamName="key"
       StackTrace:
            在 System.Collections.Hashtable.get_Item(Object key)
            在 DevExpress.Data.Helpers.BaseRowsKeeper.Restore(Object rowKey, Object row)
            在 DevExpress.Data.Helpers.ListSourceRowsKeeper.RestoreSelection(Int32 count, Boolean needRestoreGrouping, Boolean needRestoreSelection)
            在 DevExpress.Data.Helpers.ListSourceRowsKeeper.RestoreCore()
            在 DevExpress.Data.Helpers.ListSourceRowsKeeper.RestoreCore(Boolean clear)
            在 DevExpress.Data.Helpers.ListSourceRowsKeeper.Restore()
            在 DevExpress.Data.DataController.DoRefreshCore(Boolean useRowsKeeper)
            在 DevExpress.Data.DataController.DoRefresh(Boolean useRowsKeeper)
            在 DevExpress.Data.CurrencyDataController.DoRefresh(Boolean useRowsKeeper)
            在 DevExpress.Data.DataControllerBase.DoRefresh()
            在 DevExpress.Data.DataController.OnBindingListChangedCore(ListChangedEventArgs e)
            在 DevExpress.Data.CurrencyDataController.OnBindingListChangedCore(ListChangedEventArgs e)
            在 DevExpress.Data.DataController.OnBindingListChanged(ListChangedEventArgs e)
       InnerException: 

Answer 4

第二个错的未处理 System.InvalidOperationException
  Message="BindingSource 不能是自己的数据源。请不要将 DataSource 和 DataMember 属性设置为循环引用 BindingSource 的值。"
  Source="System.Windows.Forms"
  StackTrace:
       在 System.Windows.Forms.BindingSource.get_Count()
       在 DevExpress.Data.Helpers.BaseListDataControllerHelper.GetRow(Int32 listSourceRow)
       在 DevExpress.Data.Helpers.BaseDataViewControllerHelper.GetDataRowCore(Int32 listSourceRow)
       在 DevExpress.Data.Helpers.BaseDataViewControllerHelper.GetDataRow(Int32 listSourceRow)
       在 DevExpress.Data.Helpers.BaseDataViewControllerHelper.GetRowKey(Int32 listSourceRow)
       在 DevExpress.Data.DataController.GetRowKey(Int32 controllerRow)
       在 DevExpress.XtraGrid.Views.Base.ColumnView.GetRowKey(Int32 rowHandle)
       在 DevExpress.XtraGrid.Views.Grid.ViewInfo.GridViewInfo.LoadRows(GridRowsLoadInfo e)
       在 DevExpress.XtraGrid.Views.Grid.ViewInfo.GridViewInfo.Calc(Graphics g, Rectangle bounds)
       在 DevExpress.XtraGrid.Views.Grid.ViewInfo.GridViewInfo.FullRecalcScroll(Graphics g, Rectangle bounds)
       在 DevExpress.XtraGrid.Views.Grid.ViewInfo.GridViewInfo.CalcAfterVertScrollCore(Graphics g, Rectangle bounds, Boolean useCache)
       在 DevExpress.XtraGrid.Views.Grid.ViewInfo.GridViewInfo.CalcAfterVertScroll(Graphics g, Rectangle bounds, Boolean useCache)
       在 DevExpress.XtraGrid.Views.Grid.GridView.RefreshRows(Boolean useCache, Boolean afterScroll)
       在 DevExpress.XtraGrid.Views.Grid.GridView.CalculateDataCore()
       在 DevExpress.XtraGrid.Views.Grid.GridView.CalculateData()
       在 DevExpress.XtraGrid.Views.Base.BaseView.CheckViewInfo()
       在 DevExpress.XtraGrid.Views.Base.BaseView.Draw(GraphicsCache e)
       在 DevExpress.XtraGrid.GridControl.OnPaint(PaintEventArgs e)
       在 System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs)
       在 System.Windows.Forms.Control.WmPaint(Message& m)
       在 System.Windows.Forms.Control.WndProc(Message& m)
       在 DevExpress.XtraEditors.Container.EditorContainer.WndProc(Message& m)
       在 DevExpress.XtraGrid.GridControl.WndProc(Message& m)
       在 System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
       在 System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
       在 System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
       在 System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
       在 System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
       在 System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
       在 System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
       在 System.Windows.Forms.Application.Run(Form mainForm)
       在 AnalysisClient.Program.Main() 位置 C:\Users\Administrator\Documents\Visual Studio 2008\Projects\AnalysisProject\AnalysisClient\Program.cs:行号 17
       在 System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
       在 System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)
       在 System.Runtime.Hosting.ManifestRunner.Run(Boolean checkAptModel)
       在 System.Runtime.Hosting.ManifestRunner.ExecuteAsAssembly()
       在 System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext, String[] activationCustomData)
       在 System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext)
       在 System.Activator.CreateInstance(ActivationContext activationContext)
       在 Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone()
       在 System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       在 System.Threading.ThreadHelper.ThreadStart()
  InnerException: 

Answer 5

主键重复了，你看看你web服务获取的数据源是不是又重复的主键，我以前也遇到过，大概就是这个问题引起的

Answer 6

对的，就是dev的控件，我以前做过一个查询中心，就是有重复的主键后出现了类似问题。

Answer 7

如果是,楼主可以把主健重新NEW下试试~

Answer 8

数据的主键都是guid的，应该不会重复把，新增记录的主键是Guid.NewGuid()的

Answer 9

问题似乎解决了，加了个databind的delegate,然后用invoke调用databind就不报错了。

Answer 10

研究了几天，发现问题就是出在devexpress的gridcontrol绑定上，取数据前先要清除gridcontrol的数据绑定，再取数据并重新绑定。