You may receive multiple errors when you have a file name with characters from a different language in Visual C# .NET (814910)

MORE INFORMATION

The following are problems that you may experience:

• Navigation features that do not function correctly when you double-click the error in the Task List
• Debugging problems
• Compiler warnings

Steps to Reproduce the Behavior

Navigation Features That Do Not Function Correctly When You Double-Click the Error in the Task List

1. Set System locale to Turkish.
   To do this in Microsoft Windows XP, follow these steps:
   1. In Control Panel, click Date, Time, Language, and Regional Options, and then click Regional and Language Options.
   2. In the Regional and Language Options dialog box, click the Advanced tab.
   3. Under Language for non-Unicode programs, select Turkish from the list.
   
   To do this in Microsoft Windows 2000 Advanced Server, follow these steps:
   1. In Control Panel, double-click Regional Options.
   2. On the General tab, select Turkish from the your locale (location): list. If you cannot find Turkish, click to select the Turkic check box under Language settings for the system. Restart your computer when you are prompted to do so.
   3. In the Regional Options dialog box, click the Input locales tab, and then click Change.
   4. Under Installed Services, click Add. In the Add Input Language dialog box, select Turkish from the Input Language list.
   5. Click OK.
   6. In the notification area of taskbar, click the Language icon, and then select Turkish.
2. Start Microsoft Visual Studio .NET.
3. On the File menu, point to New, and then click Project.
4. Click Visual C# Projects under Project Types, click Console Application under Templates, and then click OK.
5. In the "Main" section of the default code, add the following code:

   int iVal1 = 10;
   int iVal2 = 20;
   int iSum = 0;
   string str = "\u0049\u0131\u0130\u0069";
   iSum = iVal1 + iVal2;
   Console.WriteLine("the sum is {0} string = {1}", iSum, str);

6. Build the project.
7. Insert breakpoints.
8. Press F5 to start debugging.
9. Press SHIFT+F5 to stop debugging.
10. Change the name of the Class1.cs file to I1.cs.
11. Introduce a build error (remove line terminator ";" in the source code I.cs).
12. Build the application. You receive the build error.
13. Double-click the build error in the Task List.

You receive the following error message:The problem occurs because the file name is put in the Task List. The correct string should be "I1". The string that is put in the Task List is "i1", which does not have a matching file name.

You also experience the following problems:

• All language services stop working or do not work correctly.
• Outlining, colorization, code model, Intellisense, and loading designer do not work.
• The editor does not show the breakpoints that are set in the code.

Debugger Problems

Debugger features do not work correctly.

1. Follow the earlier steps 2 through 7.
2. Open Class1.cs in the editor, and then rename the file to include a character from a different language. For example, the following Turkish character: I1.cs.
3. Build the project.
4. Press F5 to start debugging. Notice that the debugger prompts you to open the file, even when the file is already open.

Compiler Warnings

You receive the warning message CS2002 when you compile the files that have two similar file names. One is with Turkish characters, and the other with the same file name but with Latin characters. For example, file1 has I1.cs (Turkish Characters) and file2 has I1.cs (Latin characters).

Compile file in Visual Studio .NET:

csc I1.cs I1.cs

You receive the following CS2002 warning message: