Deleting RAR files from temp folder?

Question

I am currently working on tool that will delete stuff in my temp folder and I've made it so it deletes Files such as text files and folders but how do I make it so it deletes RAR files and JPG's etc? is it possible?

This is my current code

private void Clear_Click(object sender, EventArgs e)
{
    string tempPath = Path.GetTempPath();
    DirectoryInfo di = new DirectoryInfo(tempPath);

    foreach (DirectoryInfo dir in di.GetDirectories())
    {
        try
        {
           dir.Delete(true);
        }
        catch (Exception)
        {
            // Log error.
            continue;
        }  
    }

    foreach (FileInfo file in di.GetFiles())
    {
        try
        {
            file.Delete();
        }
        catch (Exception)
        {
            // Log error.
            continue;
        }
    }
}

Answer 1

The DirectoryInfo.GetFiles() can accept a search pattern parameter.

foreach (FileInfo file in di.GetFiles("*.jpg"))
{
    file.Delete();
}

This would delete any file with .jpg extension. You can do the same for .rar

Optionally I would suggest creating a method to do this.

public void DeleteFiles(DirectoryInfo di, string searchPattern)
{
    foreach (FileInfo file in di.GetFiles(searchPattern))
    {
        file.Delete();
    }
}

Once this is created then you can just it like this.

DeleteFiles(di, "*.jpg");

If you have a list of all the extensions that you need you can loop through them.

string[] extentionList = new[] {"*.jpg", "*.rar", "*.bmp", "*.gif"};

foreach (string extension in extentionList)
{
    DeleteFiles(di, extension);
}

If you will be using this in a variety of places, converting it to a DirectoryInfo extension method would be the best choice.