VB.Net - ColorDialog Control


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The ColorDialog control class represents a common dialog box that displays available colors along with controls that enable the user to define custom colors. It lets the user select a color.

The main property of the ColorDialog control is Color, which returns a Color object.

Following is the Color dialog box:

VB.Net Color Dialog

Properties of the ColorDialog Control

The following are some of the commonly used properties of the ColorDialog control:

S.N Property Description
1 AllowFullOpen Gets or sets a value indicating whether the user can use the dialog box to define custom colors.
2 AnyColor Gets or sets a value indicating whether the dialog box displays all available colors in the set of basic colors.
3 CanRaiseEvents Gets a value indicating whether the component can raise an event.
4 Color Gets or sets the color selected by the user.
5 CustomColors Gets or sets the set of custom colors shown in the dialog box.
6 FullOpen Gets or sets a value indicating whether the controls used to create custom colors are visible when the dialog box is opened
7 ShowHelp Gets or sets a value indicating whether a Help button appears in the color dialog box.
8 SolidColorOnly Gets or sets a value indicating whether the dialog box will restrict users to selecting solid colors only.

Methods of the ColorDialog Control

The following are some of the commonly used methods of the ColorDialog control:

S.N Method Name & Description
1

Reset

Resets all options to their default values, the last selected color to black, and the custom colors to their default values.

2

RunDialog

When overridden in a derived class, specifies a common dialog box.

3

ShowDialog

Runs a common dialog box with a default owner.

Events of the ColorDialog Control

The following are some of the commonly used events of the ColorDialog control:

S.N EventDescription
1 HelpRequest Occurs when the user clicks the Help button on a common dialog box.

Example

In this example, let's change the forecolor of a label control using the color dialog box. Take the following steps:

  • Drag and drop a label control, a button control and a ColorDialog control on the form.

  • Set the Text property of the label and the button control to 'Give me a new Color' and 'Change Color', respectively.

  • Change the font of the label as per your likings.

  • Double-click the Change Color button and modify the code of the Click event.

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
   If ColorDialog1.ShowDialog <> Windows.Forms.DialogResult.Cancel Then
      Label1.ForeColor = ColorDialog1.Color
   End If
End Sub

When the application is compiled and run using Start button available at the Microsoft Visual Studio tool bar, it will show the following window:

VB.Net Color Dialog Result

Clicking on the Change Color button, the color dialog appears, select a color and click the OK button. The selected color will be applied as the forecolor of the text of the label.


vb.net_dialog_boxes.htm

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