错误：尝试读取或写入受保护的内存。这通常指示其他内存已损坏。

Question

winform下
textbox实现智能提示后 出现RT错误！请遇到过此问题的朋友指点一下怎么解决

Answer 1

未处理 System.AccessViolationException
  Message="尝试读取或写入受保护的内存。这通常指示其他内存已损坏。"
  Source="System.Windows.Forms"
  StackTrace:
       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 BeforeHandBuy.Program.Main() 位置 D:\c#Projects\BeforeHandBuy\BeforeHandBuy\Program.cs:行号 18
       在 System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
       在 System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       在 Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       在 System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       在 System.Threading.ThreadHelper.ThreadStart()

Answer 2

      在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) 
      在 System.Threading.ThreadHelper.ThreadStart() 八成在线程里直接访问控件

Answer 3

private void BuyMainForm_Load(object sender, EventArgs e)
        {
            #region 创建项目的智能提示
            this.Batch_NoBBX.AutoCompleteMode = System.Windows.Forms.AutoCompleteMode.Suggest;
            this.Batch_NoBBX.AutoCompleteSource = System.Windows.Forms.AutoCompleteSource.CustomSource;
            this.Batch_NoBBX.AutoCompleteCustomSource = ac;
            #endregion            this.ItemNoteComBE.AutoCompleteMode = System.Windows.Forms.AutoCompleteMode.Suggest;
            this.ItemNoteComBE.AutoCompleteSource = System.Windows.Forms.AutoCompleteSource.CustomSource;
            this.ItemNoteComBE.AutoCompleteCustomSource = ac;        }
        #region 器件名称的智能提示
        private void Batch_NoBBX_TextChanged(object sender, EventArgs e)
        {
            string batch_no = Batch_NoBBX.Text.ToUpper().Trim();
            DataSet ds = new DataSet();
            string err = "";
            DataTable dt = new DataTable();
            if (!SelectForBeforeHandBuy.SelectBatch_no(batch_no, ref ds, out err))
            {
                MessageBox.Show(err, "提示");
            }
            else
            {
                dt = ds.Tables[0];
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    ac.Add(dt.Rows[i][0].ToString());
                }
            }        }
        #endregion

Answer 4

未处理 System.AccessViolationException
  Message="尝试读取或写入受保护的内存。这通常指示其他内存已损坏。"
  Source="System.Windows.Forms"
  StackTrace:
       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 demo.Program.Main() 位置 D:\My Documents\Visual Studio 2008\Projects\demo\demo\Program.cs:行号 18
       在 System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
       在 System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       在 Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       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: