This example displays a color selection window to select a color.
Usage:
ColorDialog colorDialog = new ColorDialog();
if (colorDialog.ShowDialog() == DialogResult.OK)
{
Color selectedColor = colorDialog.Color;
}
This example shows how to read and write a registry key. To do this, we must use RegistryKey and Registry classes in Microsoft.Win32 namespace.
Usage:
//Usage:
Write("REGISTRY DATA1", "http://www.csharpexamples.com");
Write("REGISTRY DATA2", 123.ToString());
string registryData1 = Read("REGISTRY DATA1");
string registryData2 = Read("REGISTRY DATA2");
Sample Read and Write Methods:
////// This C# code reads a key from the windows registry. /// /// ///public string Read(string keyName) { string subKey = "SOFTWARE\\" + Application.ProductName.ToUpper(); RegistryKey sk = Microsoft.Win32.Registry.CurrentUser.OpenSubKey(subKey); if (sk == null) return null; else return sk.GetValue(keyName.ToUpper()).ToString(); } /// /// This C# code writes a key to the windows registry. /// /// /// public void Write(string keyName, string value) { string subKey = "SOFTWARE\\" + Application.ProductName.ToUpper(); RegistryKey sk1 = Microsoft.Win32.Registry.CurrentUser.CreateSubKey(subKey); sk1.SetValue(keyName.ToUpper(), value); }
This example shows how to play the default windows sounds.
Usage:
//To play the classical beep sound, you can use the following code:
System.Media.SystemSounds.Beep.Play();
//Similarly, you can play the “Question” sound with this code:
System.Media.SystemSounds.Question.Play();
This example shows how to save a file using the SaveFileDialog dialog box. SaveFileDialog allows users to set a file name for a specific file. It is found in System.Windows.Forms namespace and it displays the standard Windows dialog box.
Usage:
SaveFileDialog saveDialog = new SaveFileDialog();
saveDialog.Title = "Save";
saveDialog.Filter = "Text Files (*.txt)|*.txt" + "|" +
"Image Files (*.png;*.jpg)|*.png;*.jpg" + "|" +
"All Files (*.*)|*.*";
if (saveDialog.ShowDialog() == DialogResult.OK)
{
string file = saveDialog.FileName;
}
This example shows how to select a file using the OpenFileDialog dialog box. OpenFileDialog allows users to select files. It is found in System.Windows.Forms namespace and it displays the standard Windows dialog box.
Usage:
OpenFileDialog openDialog = new OpenFileDialog();
openDialog.Title = "Select A File";
openDialog.Filter = "Text Files (*.txt)|*.txt" + "|" +
"Image Files (*.png;*.jpg)|*.png;*.jpg" + "|" +
"All Files (*.*)|*.*";
if (openDialog.ShowDialog() == DialogResult.OK)
{
string file = openDialog.FileName;
}
