save file dialog help

Greetings Friends,

I have a problem while saving a batch file.
In my program i have a button, when button clicks it need to save the file with extension .bat. I defined it as " SaveFileDialog saveFileDialog1 = new SaveFileDialog();

saveFileDialog1.InitialDirectory = @"C:\";

saveFileDialog1.Title = "";

saveFileDialog1.CheckFileExists = true;

saveFileDialog1.CheckPathExists = true;

saveFileDialog1.DefaultExt = "bat";

saveFileDialog1.Filter = "Batch Files (*.bat)|*.bat"|All files (*.*)|*.*;

saveFileDialog1.FilterIndex = 2;

saveFileDialog1.RestoreDirectory = true;

if (saveFileDialog1.ShowDialog() == DialogResult.OK)

{

textBox1.Text = saveFileDialog1.FileName;

} "
The dialog box appears but the file is not saving.
please help me.