Getting rid of "There is no source code available for the current location."

user_267 0
Viewed 94901

OK, this is my own fault, but I can't seem to rescue myself.

Whenever I try to step into a class that has fields with assignments calling into .NET code, I get a dialog box that contains the text "There is no source code available for the current location.":

Screenshot of error message

For instance, stepping into the constructor of the following class would give me the above message:

public class Test
{
    private Stack<String> _Dummy = new Stack<String>();
    public Test() { }
}

I assume this is because at some point I fiddled with the settings for the symbol server, but no matter what I fiddle with now, I can't seem to get rid of that message.

Where has my stupidity forgotten what it did?

Summary of my current options:

  • [ ] Enable address-level debugging
  • [x] Enable Just My Code (Managed Only)
  • [ ] Enable .NET framework source stepping
  • [ ] Enable source server support
  • Symbol file .pdb locations - empty
  • Cache symbols from symbol servers to this directory: C:\temp (empty)
step-into message debug-symbols visual-studio debugging
17 Answers

See if some source files are accidentally excluded. Do properties of the solution and look at the Debug Source Files section under Common Properties.

user_2877460

In Solution Explorer, check your solution property page under Common Properties, Debug Source Files. If you see the assembly listed under "Do not look for these source files:", delete it and the issue should go away.

Open the solution property page

Screenshot of right clicking on the solution in Visual Studio's Solution Explorer

Check "Do not look for these source files"

Screenshot of the solution property pages in Visual Studio solution

user_27663180

Check if your projects have a project reference, not a DLL reference! If there exists a DLL reference, your changes will not be recognized by your referenced project, and you will get an error message like yours.

yapiskan_42150

I had for some reason disabled all the Common Language Runtime Exceptions in VS 2017.

To fix this, open the Exception Settings under Debug > Windows > Exception Settings and mark the checkbox Common Language Runtime Exceptions in the Exception Settings window

user_95779170

I had the same issue, It showed me that the error is on AjaxControlToolkit, but the problem was in my HTML syntax, especially in a div tag, I was putting only the close tag '' without the opening tag

user_49041070

I ran into this problem because of difference between framework versions of test projects and main projects. When upgrading main projects frameworks version, be sure to not forget to upgrade test projects.

user_54051680

I had this problem in VS 2017 C++

TLDR: It was accesing data beyond the limit

The program finished in debug mode and it showed this message: wntdll.pdb not loaded

After fixing it with this answer it started to show the message: There is no source code available for the current location

But also there was a message that popped saying: app.exe has triggered a breakpoint, but the breakpoint was not in my source code, it was in the source code generated by VS in debug mode, Right click in the source code -> Go to Disassembly and the break point was int 3 instruction

At the end it was just a stack overflow, since the code was accesing data beyond the limit, I just fixed the code and the messages were gone

I guess VS didn't show an error about accesing data outside the limit because I was using Winapi function GetEnvironmentStrings() and in the site says: Treat this memory as read-only; do not modify it directly and I was modifying it :)

user_4533480
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