vs file error solution

Problem Description:

Computer crashes, restart the computer and open solutions, suggesting that "the selected file is not a valid solution file"

solution:

1. First use Notepad to open this solution for viewing under and found the content goes blank?

 

2. Open the file in your project xxxx.vcxproj

Solution directory: C: \ Users \ Administrator \ Desktop \ DemoTest

Project directory: C: \ Users \ Administrator \ Desktop \ DemoTest \ DemoTest

3. Click the Save All button opens

4. Save the file as a pop-up, select the original solutions directory, click Save Note:. VS will automatically create a corresponding solution file according to the project

 

 5. Open the solution, everything is normal