C# delete a folder and all files and folders within that folder

Question

I'm trying to delete a folder and all files and folders within that folder, I'm using the code below and I get the error Folder is not empty, any suggestions on what I can do?

try {   var dir = new DirectoryInfo(@FolderPath);   dir.Attributes = dir.Attributes & ~FileAttributes.ReadOnly;   dir.Delete();   dataGridView1.Rows.RemoveAt(dataGridView1.SelectedRows[i].Index); } catch (IOException ex) {   MessageBox.Show(ex.Message); } 

Answer 1

dir.Delete(true); // true => recursive delete