1. OpenFileDialog
2. FontDialog
3. ColorDialog
4. PrintPreviewDialog
5. PrintDialog
6. SaveFileDialog

Object hierarchy of the above dialog objects is given as
Object
   MarshalByRefObject
      Component
         CommonDialog
            ColorDialog
            FileDialog
               OpenFileDialog
               SaveFileDialog
            FontDialog
            PrintDialog
            
In this example we have created an application that opens a dialog box to open a txt tile using a OpenFileDialog button. On click of FontDialog button, Font Dialog box is opened. The user can select Font name, style, size etc. ColorDialog button helps the user select a particular color to be used for the font. PrintPreview button helps the user preview the formatted document. PrintDialog button helps the user print the document. With the help of SaveDialog button, the user can open ‘Save As’ dialog box to save the copy of the file as a new file. All the selected parameters are displayed with the help of a label. A runtime view of the FORM created is give below.

1. OpenFileDialog

The dialog box looks like this:

This is default directory
Filter applied to this field
File to be opened


private void btnOpenFileDialog_Click(object sender, System.EventArgs e)
{
OpenFileDialog openFileDialog1 = new OpenFileDialog();
openFileDialog1.InitialDirectory = "c:\" ;
openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*" ;
openFileDialog1.FilterIndex = 2 ;
openFileDialog1.RestoreDirectory = true ;
if(openFileDialog1.ShowDialog() == DialogResult.OK)
{
fName = openFileDialog1.FileName;
showInfo();
sr = new StreamReader(fName);
}
}

Other Public Instance Properties (inherited from FileDialog) are listed below

Public Instance Methods

The dialog box looks like this:

Color Property is disabled from here
Selected
properties




private void btnFontDialog_Click(object sender, System.EventArgs e)
{
FontDialog fontDialog1 = new FontDialog();
fontDialog1.ShowColor = true;
fontDialog1.AllowScriptChange = true;
fontDialog1.ShowColor = false;
if(fontDialog1.ShowDialog() != DialogResult.Cancel )
{
fnt = fontDialog1.Font;
showInfo();
}
}

Other Public Instance Properties

3. ColorDialog

The dialog box looks like this:

Selected font color


private void btnColorDialog_Click(object sender, System.EventArgs e)
{
ColorDialog ColorDialog1 = new ColorDialog();
ColorDialog1.AllowFullOpen = true ;
ColorDialog1.FullOpen = true;
ColorDialog1.ShowHelp = true ;
// Set the initial color select to the current text color,
// so that if the user cancels out we will restore the original color.
ColorDialog1.Color = Color.DarkBlue;
ColorDialog1.ShowDialog();
clr = ColorDialog1.Color;
showInfo();
}

Other Public Instance Properties

4. PrintPreview

The dialog box looks like this:

private void btnPrintPreview_Click(object sender, System.EventArgs e)

{

pd = new PrintDocument();

pd.PrintPage += new PrintPageEventHandler(this.pd_PrintPage);

PrintPreviewDialog printPreviewDialog1 = new PrintPreviewDialog();

printPreviewDialog1.Document = this.pd ;

printPreviewDialog1.FormBorderStyle = FormBorderStyle.Fixed3D ;

printPreviewDialog1.ShowDialog();

}

5. PrintDialog

The dialog box looks like this:

private void btnPrintDialog_Click(object sender, System.EventArgs e)
{
PrintDialog PrintDialog1 = new PrintDialog();
pd = new PrintDocument();
pd.PrintPage += new PrintPageEventHandler(this.pd_PrintPage);
PrintDialog1.PrintToFile = false;
PrintDialog1.Document = pd;
if(PrintDialog1.ShowDialog() != DialogResult.Cancel )
{
try
{ pd.Print();
}
catch(Exception ex)
{ MessageBox.Show(ex.Message);
}
}
}

Public Instance Properties - PrintDialog

The dialog box looks like this:

private void btnSaveFileDialog_Click(object sender, System.EventArgs e)
{
Stream myStream ;
SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*" ;
saveFileDialog1.FilterIndex = 2 ;
saveFileDialog1.RestoreDirectory = true ;
if(saveFileDialog1.ShowDialog() == DialogResult.OK)
{
if((myStream = saveFileDialog1.OpenFile()) != null)
{
// Code to write the stream goes here:
sr.BaseStream.Seek(0,SeekOrigin.Begin);
int i;
while((i=sr.BaseStream.ReadByte()) != -1)
myStream.WriteByte((byte)i);
myStream.Close();
sr.BaseStream.Seek(0,SeekOrigin.Begin);
//revert at the beginning
}
}

}

Public Instance Properties

Public Instance Events

The complete listing