How to sort an array of FileInfo[]

Question

I have the following code

DirectoryInfo taskDirectory = new DirectoryInfo(this.taskDirectoryPath);
FileInfo[] taskFiles = taskDirectory.GetFiles(\"*\" + blah         


        

Answer 1

Call Array.Sort, passing in a comparison delegate:

Array.Sort(taskFiles, delegate(FileInfo f1, FileInfo f2) {
    return f1.Name.CompareTo(f2.Name);
});

In C# 3 this becomes slightly simpler:

Array.Sort(taskFiles, (f1, f2) => f1.Name.CompareTo(f2.Name));

Or you can use a StringComparer if you want to use a case-insensitive sort order:

Array.Sort(taskFiles,
           (x, y) => StringComparer.OrdinalIgnoreCase.Compare(x.Name, y.Name));

(or use string.Compare(x.Name, y.Name, true), or any of the many other ways of comparing strings :)