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Help with C# Input/Output

Posted on 2011-03-21
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Last Modified: 2013-12-17
I need help to create a console applicatation that accepts the path to the
location of a folder(Example FolderA). The application should  search every single subfolder in FolderA that are missing a particular file type and output the name of those folders. So  FolderA may have Folder1,Folder2,Folder3 as sub folders. If For example Folder2 and Folder3 doesnt have a .JPG file the program would output a report to a text file.

For exapmple "Folder2: Missing: .jpg"
             "Folder3: Missing: .jpg"

So the console application would accept the path to FolderA and the file types we are checking for that are missing.

Example:C:\Documents and Settings\pazosb>Checkfile.exe 'C:\FolderA' (.jpg,.mpeg)
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Question by:wademi
  • 3
  • 2
5 Comments
 
LVL 23

Expert Comment

by:wdosanjos
ID: 35185061
Try this:

public static void Main(String[] args)
{
	if (args.Length != 2)
	{
		Console.WriteLine("Invalid parameters");
		return;
	}
	
	var extensions = Regex.Matches(args[1], @"\.\w+");
	
	foreach (var dir in Directory.GetDirectories(args[0], "*", SearchOption.AllDirectories))
	{
		foreach (Match extension in extensions)
		{
			if (Directory.GetFiles(dir, "*" + extension.Value).Length == 0)
			{
				Console.WriteLine("{0}: Missing: {1}", dir, extension.Value);
			}
		}
	}
	
}

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I hope this helps.
0
 

Author Comment

by:wademi
ID: 35185378
Hi wdosanjos:
I am Getting these errors when I build the solution. I addes system.io

Error      1      The type or namespace name 'var' could not be found (are you missing a using directive or an assembly reference?)      C:\Documents and Settings\Wademi\My Documents\Visual Studio 2005\Projects\ConsoleApplication1\ConsoleApplication1\Program.cs      19      13      ConsoleApplication1
Error      2      The name 'Regex' does not exist in the current context      C:\Documents and Settings\Wademi\My Documents\Visual Studio 2005\Projects\ConsoleApplication1\ConsoleApplication1\Program.cs      19      30      ConsoleApplication1
Error      3      The type or namespace name 'var' could not be found (are you missing a using directive or an assembly reference?)      C:\Documents and Settings\Wademi\My Documents\Visual Studio 2005\Projects\ConsoleApplication1\ConsoleApplication1\Program.cs      21      22      ConsoleApplication1
Error      4      foreach statement cannot operate on variables of type 'var' because 'var' does not contain a public definition for 'GetEnumerator'      C:\Documents and Settings\Wademi\My Documents\Visual Studio 2005\Projects\ConsoleApplication1\ConsoleApplication1\Program.cs      23      17      ConsoleApplication1
Error      5      The type or namespace name 'Match' could not be found (are you missing a using directive or an assembly reference?)      C:\Documents and Settings\Wademi\My Documents\Visual Studio 2005\Projects\ConsoleApplication1\ConsoleApplication1\Program.cs      23      26      ConsoleApplication1
0
 
LVL 23

Expert Comment

by:wdosanjos
ID: 35185429
Try this:

using System.Text.RegularExpressions;
using System.IO;

public static void Main(String[] args)
{
	if (args.Length != 2)
	{
		Console.WriteLine("Invalid parameters");
		return;
	}
	
	MatchCollection extensions = Regex.Matches(args[1], @"\.\w+");
	
	foreach (string dir in Directory.GetDirectories(args[0], "*", SearchOption.AllDirectories))
	{
		foreach (Match extension in extensions)
		{
			if (Directory.GetFiles(dir, "*" + extension.Value).Length == 0)
			{
				Console.WriteLine("{0}: Missing: {1}", dir, extension.Value);
			}
		}
	}
	
}

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0
 

Author Comment

by:wademi
ID: 35185494
wdosanjos:
Thanks. That work. Can you show me an example of how to write the results to a file.
0
 
LVL 23

Accepted Solution

by:
wdosanjos earned 500 total points
ID: 35185828
Sure. There you go.

public static void Main(String[] args)
{
	if (args.Length != 2)
	{
		Console.WriteLine("Invalid parameters");
		return;
	}
	
	MatchCollection extensions = Regex.Matches(args[1], @"\.\w+");
	
	using (StreamWriter writer = new StreamWriter("MyOutputFile.txt"))
	{
		foreach (string dir in Directory.GetDirectories(args[0], "*", SearchOption.AllDirectories))
		{
			foreach (Match extension in extensions)
			{
				if (Directory.GetFiles(dir, "*" + extension.Value).Length == 0)
				{
					writer.WriteLine("{0}: Missing: {1}", dir, extension.Value);
				}
			}
		}
	}
}

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