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Could not create the specified file in project.
While adding a file to the project in Solution Explorer, the operation failed. There are many possible reasons for this error. You can try any of the following remedial actions:
Try the operation again.
Make sure there is sufficient disk space to write the new file. Consider using the Disk Cleanup and Disk Defragmenter options on the System Tools menu of your operating system.
Close the Solution, restart Visual Studio, and try again.
Restart your computer and try again.