C # savefiledialog usage

# Region save dialog box
Private void showsavefiledialog ()
{
// String localfilepath, filenameext, newfilename, filepath;
Savefiledialog SFD = new savefiledialog ();

// Set the file type
SFD. filter = "database backup file (*. bak) | *. bak | data file (*. MDF) | *. MDF | log file (*. LDF) | *. LDF ";

// Set the display sequence of default file types
SFD. filterindex = 1;

// Whether to remember the last opened directory in the SAVE dialog box
SFD. restoredirectory = true;

// Click the Save button to enter
If (SFD. showdialog () = dialogresult. OK)
{
String localfilepath = SFD. filename. tostring (); // obtain the file path
String filenameext = localfilepath. substring (localfilepath. lastindexof ("\") + 1); // get the file name without path

// Obtain the file path without the file name
// Filepath = localfilepath. substring (0, localfilepath. lastindexof ("\\"));

// Add the time before the file name
// Newfilename = datetime. Now. tostring ("yyyymmdd") + filenameext;

// Add characters to the file name
// Savefiledialog1.filename. insert (1, "dameng ");

// System. Io. filestream FS = (system. Io. filestream) SFD. openfile (); // output file

//// FS outputs a file with text or images.
}
}

# Endregion