File creation and naming increment

[Lost User]

That's how I'd do it:

string[] logfiles = Directory.GetFiles(@"../Files/", @"Text*.txt");
Array.Sort(logfiles, CompareFileNumbers);

int highestNumber = int.Parse(Regex.Match(logfiles[0], @"(\d+)").Value);

with the custom comparer being:

public static int CompareFileNumbers(string fileA, string fileB)
{
Regex regexNumber = new Regex(@"(\d+)");

int fileNumberA = int.Parse(regexNumber.Match(fileA).Value);
int fileNumberB = int.Parse(regexNumber.Match(fileB).Value);

return -fileNumberA.CompareTo(fileNumberB); // the miuns sign will sort descending

}

Tested and it works. You need to add error checking though in case the filenames don't have numbers (the regexes will fail) and other cases. regards

[PIEBALDconsult]

You can check to see if a file with that name already exists.

[Ennis Ray Lynch Jr]

Doesn't work in concurrent systems as the check for existence and creation have to be the same act, otherwise File.Exists then File.Create can fail.

Need software developed? Offering C# development all over the United States, ERL GLOBAL, Inc is the only call you will have to make.
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[PIEBALDconsult]

I know. I don't think there's any way around a try/catch. I would still opt for a database.

[Ennis Ray Lynch Jr]

http://msdn.microsoft.com/en-us/library/aa363858(VS.85).aspx[^]

Need software developed? Offering C# development all over the United States, ERL GLOBAL, Inc is the only call you will have to make.
If you don't ask questions the answers won't stand in your way.
Most of this sig is for Google, not ego.

[PIEBALDconsult]

Didn't the original poster mention the API?

[Ennis Ray Lynch Jr]

??

Need software developed? Offering C# development all over the United States, ERL GLOBAL, Inc is the only call you will have to make.
If you don't ask questions the answers won't stand in your way.
Most of this sig is for Google, not ego.

[Terick]

I'm using C# with ASP.NET.

[Ennis Ray Lynch Jr]

Using the Win32 API is a perfectly valid way to overcome limitations in .NET. (Or at least a way to cut off your nose to spite your face)

Need software developed? Offering C# development all over the United States, ERL GLOBAL, Inc is the only call you will have to make.
If you don't ask questions the answers won't stand in your way.
Most of this sig is for Google, not ego.

[PIEBALDconsult]

Oh, no, I see, you did.

[riced]

This won't work - in fact I don't think it will compile. 1 The return type is void but the function tries to return a string. 2 The parameter name (file) conflicts with the local variable also called file. 3 The value of y is not set but is used to construct the file name. Couple of other comments. 1 Why use the x and y variables when you have filepaths. You could just set it to Directory.GetFiles(@"C:\Desktop\Request", "*txt").Length + 1. Then use it instead of x or y. 2 This approach does not deal with deleted files. Suppose there are three files originally (text1.txt, text2.txt, text3.txt). Then text1.txt is deleted. What will the file count be? 3 The function is named filecount but it actually tries to return the next filename. 4 Read some of the suggestions carefully - there's good stuff in them that should solve the problem. Regards David R