C # Open and save files with OpenFileDialog files and SaveFileDialog

First, open the file

Stream mystream = null;
OpenFileDialog openFileDialog1 = new OpenFileDialog ();
Openfiledialog1.initialdirectory = "d:\\";
Openfiledialog1.filter = "ext files (*.txt) |*.txt| All Files (*. *) |*>** ";
Openfiledialog1.filterindex = 2;
Openfiledialog1.restoredirectory = true;
if (openfiledialog1.showdialog () = = DialogResult.OK)
{
Try
{
if ((MyStream = Openfiledialog1.openfile ()) = null)
{
StreamReader st = new StreamReader (Openfiledialog1.filename, encoding.getencoding ("gb2312"));
String str = St. ReadLine ();
while (str! = NULL)
{
Richtextbox1.appendtext (str);
Richtextbox1.appendtext ("\ n");
str = St. ReadLine ();
}
}

}catch (Exception ex) {
MessageBox.Show ("Error opening file:" +ex. Message);
}

Second, save the file

SaveFileDialog SaveFileDialog1 = new SaveFileDialog ();
Savefiledialog1.initialdirectory = "d:\\";
Savefiledialog1.filter = "ext files (*.txt) |*.txt| All Files (*. *) |*>** ";
Savefiledialog1.filterindex = 2;
Savefiledialog1.restoredirectory = true;
DialogResult dr = Savefiledialog1.showdialog ();
if (dr = = DialogResult.OK && saveFileDialog1.FileName.Length > 0)
{
Richtextbox1.savefile (Savefiledialog1.filename,richtextboxstreamtype.plaintext);
MessageBox.Show ("Save file Successfully!") "," Save the File ");
}

Three, Color dialog box

ColorDialog colorDialog1 = new ColorDialog ();
Colordialog1.allowfullopen = false;
colorDialog1.Color = Richtextbox1.forecolor;
Colordialog1.showhelp = true;
if (Colordialog1.showdialog () ==dialogresult.ok)
{
Richtextbox1.forecolor = colorDialog1.Color;

}

Four, Font dialog box

FontDialog FontDialog = new FontDialog ();
Fontdialog.font = Richtextbox1.font;
Fontdialog.color = Richtextbox1.forecolor;
if (Fontdialog.showdialog ()! = DialogResult.Cancel)
{
Richtextbox1.font = Fontdialog.font;
Richtextbox1.forecolor = Fontdialog.color;
}

C # Open and save files with OpenFileDialog files and SaveFileDialog