why is it sometimes i get an error? it doesn't highlight the error
CODE
Dim SqlQuery As String = "Select UserName from Login"
Dim SqlAdapter As New MySqlDataAdapter
Dim SqlCommand As New MySqlCommand
Dim Ds As New DataSet
Dim i As Integer
With SqlCommand
.CommandText = SqlQuery
.Connection = sConnect
End With
With SqlAdapter
.SelectCommand = SqlCommand
.Fill(Ds, "My List")
End With
Dim col As New AutoCompleteStringCollection
For i = 0 To Ds.Tables(0).Rows.Count - 1
col.Add(Ds.Tables(0).Rows(i)("UserName").ToString())
Next
txt1.AutoCompleteSource = AutoCompleteSource.CustomSource
txt1.AutoCompleteCustomSource = col
txt1.AutoCompleteMode = AutoCompleteMode.Suggest
sConnect.Close()
SqlAdapter.Dispose()
SqlCommand.Dispose()ERROR
System.AccessViolationException was unhandled
Message="Attempted to read or write protected memory. This is often an indication that other memory is corrupt."
Source="System.Windows.Forms"
StackTrace:
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(ApplicationContext context)
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
at textboxAutoComplete.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81
at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:
