The FileSystemWatcher class ignores the uppercase characters in a file name (873196)

RESOLUTION

To resolve this problem, use the System.IO.Directory class to retrieve the actual file name. To do this, follow these steps:

Locate the following code in the Form1.vb file:

Microsoft Visual Basic .NET code

' Define the event handlers.
Private Shared Sub OnCreate(ByVal source As Object, ByVal e As FileSystemEventArgs)
    ' Specify what task is performed when a file is changed, created, or deleted.
    MessageBox.Show("The file '" & e.FullPath & "' is created")
End Sub

Microsoft Visual C# .NET code

//Define the event handlers.
private static void OnChanged(object source, FileSystemEventArgs e)
{
  //Displays a message when a file is created.
  MessageBox.Show("The file '" + e.FullPath  + "' is created");		
}

Replace the code that you located in step 1 with the following code:

Visual Basic .NET code

Private Shared Sub OnCreate(ByVal source As Object, ByVal e As FileSystemEventArgs)
   Dim ActualFileName As String() = Directory.GetFiles("C:\", e.Name)
   Dim dir As String
   For Each dir In ActualFileName
     MessageBox.Show("The file '" & dir & "' is created")
   Next
End Sub

Visual C# .NET code

private static void OnChanged(object source, FileSystemEventArgs e)
{
    string[] ActualFileName = Directory.GetFiles ("C:\\", e.Name);
    foreach (string dir in ActualFileName)
    {
	MessageBox.Show("The file '" + dir + "' is created");
    }
}

On the Build menu, click Build Solution.
On the Debug menu, click Start.
Create a text file that is named MYAPP1.txt, and then save the file on drive C.
Close the file. You see a message box that contains the following message:
The file 'C:\MYAPP1.txt' is createdNotice that the name of the file in the message is displayed as MYAPP1.txt.

MORE INFORMATION

Steps to reproduce the behavior

Start Visual Studio .NET.
Create a Windows application by using Visual Basic .NET. By default, the Form1.vb file is created. If you use Visual C# .NET, the Form1.cs file is created.
Add the following code at the beginning of the Form1.vb file:

Visual Basic .NET code
```
Imports System.IO
```
Visual C# .NET code
```
using System.IO;
```
In Design view, double-click the Form1 form. The Form1_Load procedure is added to the Form1.vb file.

Add the following code to the Form1_Load procedure:

Visual Basic .NET code

Dim watcher As New FileSystemWatcher
watcher.Path = "c:\"

' Only watch text files.
watcher.Filter = "*.txt"

' Add event handlers.
AddHandler watcher.Created, AddressOf OnCreate

' Start watching.
watcher.EnableRaisingEvents = True

Visual C# .NET code

FileSystemWatcher watcher = new FileSystemWatcher ();
watcher.Path =  "C:\\";

// Only watch text files.
watcher.Filter= "*.txt";

// Add event handlers.	 
watcher.Created +=new FileSystemEventHandler(OnChanged);

// Start watching.
watcher.EnableRaisingEvents =true;

Add the following code at the end of the Form1 class:
Visual Basic .NET code

'Define the event handlers.
 Private Shared Sub OnCreate(ByVal source As Object, ByVal e As FileSystemEventArgs)
      ' Displays a message when a file is created.
      MessageBox.Show("The file '" & e.FullPath & "' is created")
 End Sub

Visual C# .NET code

//Define the event handlers.
private static void OnChanged(object source, FileSystemEventArgs e)
{
    //Displays a message when a file is created.
    MessageBox.Show("The file '" + e.FullPath  + "' is created");		
}

On the Build menu, click Build Solution.
On the Debug menu, click Start. This sample application will display a message box when you create and save a text (.txt) file on drive C.
In Notepad, create a text file, and save the file as MYAPP.txt on drive C.
Close the file. You see a message box that contains the following message:
The file 'C:\myapp.txt' is createdNotice that the name of the file in the message is displayed as myapp.txt instead of MYAPP.txt.

The FileSystemWatcher class ignores the uppercase characters in a file name (873196)

SYMPTOMS

RESOLUTION

MORE INFORMATION

Steps to reproduce the behavior

REFERENCES