Line having the issue

Exception/StackTrace - Could not find a part of the path 'c:\xxy\newfile' This means your code is trying to access or create a file in a folder that doesn’t exists. In this case, the folder c:\xxy\ is missing.

Problem:

The actual issue is in your method:

ScanFolder.Program.DirSearch(String directoryPath, String par_OutFile)

Where you are passing c:\xxy\newfile as par_OutFile to StreamWriter.

Since the folder c:\xxy\ doesn’t exists, .Net cannot create newfile.

Fix:

Before writing the file, make sure the directory exists:

String outFile = @”c:\xxy\newfile”;

//Ensure directory exists

String directory = Path.GetDirectoryName(outFile);

If(!Directory.Exists(directory))

{

Directory.CreateDirectory(directory);

}

//Now safe to create StreamWriter

Using(StreamWriter writer = new SreamWriter(outFile, true))

{

writer.WriteLine(“Test content”);

}

For the stack trace to include the line number, you need to config debug info in the build and deploy the .pdb file.

The Could not find a part of the path 'c:\xxy\newfile' is a runtime exception in C# that occurs when the application tries to access a directory that does not exist. This typically happens when:

• The directory path is incorrect or misspelled.
• The directory has been deleted or moved.
• The application does not have the necessary permissions to access the directory.

You can troubleshoot your code by following the following steps:

1.Ensure that the directory path is correct and properly formatted

string path = @"C:\NonexistentDirectory\file.txt"; 
var files = Directory.GetFiles(path); // Error: Directory not found

Fix:

string path = @"C:\ExistingDirectory\file.txt"; // Ensure the directory exists
if (Directory.Exists(path))
{
var files = Directory.GetFiles(path);
}
else {
Console.WriteLine("Directory does not exist");
}

2.Create the directory if it's missing. We can use Directory.CreateDirectory to create the directory if it does not exist.

For example:

string path = @"C:\NewDirectory"; 
if (!Directory.Exists(path)) 
{ 
  Directory.CreateDirectory(path); // Create the directory 
} 
var files = Directory.GetFiles(path);

3.Check for Relative Paths

Please make sure that relative paths are resolved correctly. We can use Path.GetFullPath to convert relative paths to absolute paths.

For example:

string relativePath = @"..\NonexistentDirectory\file.txt"; 
string absolutePath = Path.GetFullPath(relativePath); // Resolve relative path 
if (Directory.Exists(Path.GetDirectoryName(absolutePath))) 
{ 
     var files = Directory.GetFiles(absolutePath); 
} else
 { 
    Console.WriteLine("Directory does not exist"); 
}

Based on the logs you provided(path 'c:\xxy\newfile'), your error should be due to the first reason, which is the lack of a specific file path. Is this newfile a directory? If it is a directory, what specific files are under this directory? If it is a file, what is the file extension? You can recheck it.