c sharp

Hey everyone:I'm trying to rename files to begin with "1" as they are chosen but my 1 has been off. Could someone look at my code and let me know if they notice anything out of place or that's just flat wrong.Thanksprivate void opnBtn_Click(object sender, EventArgs e) {...

What can I do to resolve this error: "The process cannot access the file because it is being used by another process?"using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using...