How to port a C++ function to C#

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iam porting a c++ function to c#

code of c++ is

int CCategory::CheckFileOrFolder(CString str)
{
	int iRet = -1;

	try
	{
		const DWORD dwFileAttr = GetFileAttributes(str);

		if (dwFileAttr == DWORD(-1)) // file not found
		{
			iRet = -1;		// nothing
		} 
		else if (dwFileAttr & FILE_ATTRIBUTE_DIRECTORY)
		{
			iRet = 0;		//folder
		}
		else	
			iRet = 1;		// file
	}
	catch(...)
	{
	}

	return iRet;
}

the output of the function is different if i pass following string

C:\Windows\System32\speech\speechux\sapi.cpl,-5566

please help

What I have tried:

and my c# code is

public int CheckFileOrFolder(string str)
        {
            int iRet = -1;
            try
            {

                FileAttributes attr = System.IO.File.GetAttributes(str);
                //var files = Directory.GetFiles(@"c:\windows\system32\");

                if ((attr & FileAttributes.Directory) == FileAttributes.Directory)
                {
                    iRet = 0;		//folder
                }
                else
                    iRet = 1;		// file
            }
            catch (Exception ex)
            {
                //File not found
                iRet = -1; // nothing
            }

            return iRet;
        }

Posted 30-Aug-17 22:58pm

srilekhamenon

Updated 31-Aug-17 4:47am

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Comments

CPallini 31-Aug-17 5:06am

What is the different output you get?

srilekhamenon 31-Aug-17 5:16am

sorry i was sending wrong string in c++ code, now iam getting -1 in both case

Richard MacCutchan 31-Aug-17 6:59am

When you catch an exception you should always print the details, including the message.

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KarstenK · Answer 1 · 2017-08-30T23:15:00

Your input isnt a valid path, but a path with the addition ",-5566". In that case the GetAttributes C function may return some value which doesnt work correct with the if/else code but System.IO.File.GetAttributes is correctly throwing an exception.

Use the debugger to look at the details to find the problem.

Nasreddine FAREH · Answer 2 · 2017-08-31T04:47:00

Solution 3

CheckFileOrFolder(@"C:\Windows\System32\speech\speechux\sapi.cpl");

return == 1 with c++ and C#

Posted 31-Aug-17 4:47am

Nasreddine FAREH

Nasreddine FAREH · Answer 3 · 2017-08-31T04:34:00

Hi ,

You can use this solution .

also you can use this IDE : Free Product Editions[^]

public int CheckFileOrFolder(string str)
{
			int iRet = -1;
			try
			{

				FileAttributes attr = System.IO.File.GetAttributes(str);
				//var files = Directory.GetFiles(@"c:\windows\system32\");

				if ((attr & FileAttributes.Directory) == FileAttributes.Directory)
				{
					iRet = 0; //folder
				}
				else
				{
					iRet = 1; // file
				}
			}
			catch (Exception ex)
			{
				//File not found
				iRet = -1; 
			}

			return iRet;
}

How to port a C++ function to C#

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