Question

How can I change the foldername if there exists some other folder with that name?

I tried in the below manner but it didn’t work 🙁

    private int ik;
    protected void Button1_Click(object sender, EventArgs e)
    {
        string folderpath = @"C:\Users\nouser\Documents\Visual Studio 2010\WebSites\folders";
        string foldername = TextBox1.Text;
        string newPath = System.IO.Path.Combine(folderpath, foldername);
        if (Directory.Exists(Path.Combine(folderpath, foldername)))
        {
            foldername = foldername + Convert.ToString(ik);
            ik = ik + 1;
        }
        else
        {
            System.IO.Directory.CreateDirectory(newPath);
            Response.Write("Folder created");
        }
    }

This code is able to create a new folder but unable to change the folder name from “newfolder” to “newfolder1” if “newfolder” already exists.

Answer 1

I’m assuming you want something where if you try to create a folder named “foo” but a folder named “foo” exist already you want your new folder to be called “foo1”? If so you’ll have to detect if the folder exists or not and create a new name for it. You can do something like this

var count = 1;
var originalPath = newPath;
while(Directory.Exists(newPath)){
     newPath = originalPath + count;
     count++;
}

Directory.CreateDirectory(newPath);

This ensures that your new path doesn’t already exist and if it does will ensure you get a unique name for your folder.

In your example I wasn’t sure what you were doing with the variable

ik

I think thats where you were trying to create a unique directory, but what happens if you already have a newFolder1 there? This is why you should use a while loop to keep checking