title: File does not exist verify if file name exist SaveFileDialog?
body: <p>I want to save a file using the SaveFileDialog control. Why does the file need to already exist in order to save it?</p>
  
  <p>This is the code I am using:</p>
  
  <pre><code>string month = dateTimePicker1.Value.Month.ToString();
  string year = dateTimePicker1.Value.Year.ToString();
  SaveFileDialog saveFileDialog1 = new SaveFileDialog();
  saveFileDialog1.InitialDirectory = @"C:\";
  saveFileDialog1.Title = "Save Sql Files";
  saveFileDialog1.FileName = "MysqlBackup-"+month+"-"+year+".sql";
  saveFileDialog1.CheckFileExists = true;
  saveFileDialog1.DefaultExt = "Sql";
  saveFileDialog1.Filter = "Sql files (*.Sql)|*.Sql";
  saveFileDialog1.FilterIndex = 2;
  saveFileDialog1.RestoreDirectory = true;
  if (saveFileDialog1.ShowDialog() == DialogResult.OK)
      {
      // Here is the error. After typing in the filename, when I click OK it gives me an error stating that the file does not exist.
      }
  </code></pre>