[RESOLVED] openFileDialog - AccessViolationException was unhandled

[MAHEY]

Hi,
Iam using Vs2015, While I try to Open a file using OpenFileDialog, Iam receiving the error

"Unhandled exception of type" System.AccessViolationException" occoured in system.windows.forms.dll
Additional information: Attempted to read or write protected memory.This is often an indication other memory is currupt.

My Codes

openFileDialog1->Title= "Select Your Excel File";
openFileDialog1->InitialDirectory = "C:\";
openFileDialog1->Filter = "Excel Files (.xls)|.xls|All files (.)|.";
openFileDialog1->FilterIndex = 2;
openFileDialog1->RestoreDirectory = true;
if (openFileDialog1->ShowDialog() == System::Windows::Forms:ialogResult::OK) {
MyExcelFile = openFileDialog1->FileName;
}

I cannot understand my mistake !
Thanks For the helps!

[VictorN]

What is openFileDialog1?
What is MyExcelFile?
Which line causes the exception?

[MAHEY]

Thank Victor. I always remember Eri523 & Victor. Because both are my Gurus. I learned many things from these gurus.
First I wish to state my heartiest thanks to Eri523 & VioctorN.

System::Windows::Forms::OpenFileDialog^ openFileDialog1 = gcnew System::Windows::Forms::OpenFileDialog();
String^ MyExcelFile = String::Empty;

Exception raised in below codes...
if (openFileDialog1->ShowDialog() == System::Windows::Forms:ialogResult::OK) {

Kind Note : I tested in C# the same codes working fine, But in Visual C++ It's giving problem...

Thank Again

[VictorN]

This code:

using namespace System;
using namespace System::Windows;
using namespace Forms;

[STAThread]
int main(array<System::String ^> ^args)
{
   String^ MyExcelFile = String::Empty;

   System::Windows::Forms::OpenFileDialog^ openFileDialog1 = gcnew System::Windows::Forms::OpenFileDialog(); 
   openFileDialog1->Title = "Select Your Excel File";
   openFileDialog1->InitialDirectory = "C:\";
   openFileDialog1->Filter = "Excel Files (.xls)|.xls|All files (.)|.";
   openFileDialog1->FilterIndex = 2;
   openFileDialog1->RestoreDirectory = true;
   if (openFileDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK)
   {
      MyExcelFile = openFileDialog1->FileName;
   }
   return 0;
}

works without exceptions. Note the [STAThread] before the main function.

[MAHEY]

Always Thanks To Those Kind Hearts Victor !