GroupBox.FlatStyle Property

Gets or sets the flat style appearance of the group box control.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public FlatStyle FlatStyle { get; set; }

Property Value

Type: System.Windows.Forms.FlatStyle
One of the FlatStyle values. The default value is Standard.

ExceptionCondition
InvalidEnumArgumentException

The value assigned is not one of the FlatStyle values.

A GroupBox with a FlatStyle value of System does not receive mouse events.

The following code example instantiates and creates a GroupBox and two RadioButton controls. The option buttons (also known as radio buttons) are added to the group box and the group box is added to the Form.

private void InitializeMyGroupBox()
{
   // Create and initialize a GroupBox and a Button control.
            GroupBox groupBox1 = new GroupBox();
            Button button1 = new Button();
            button1.Location = new Point(20,10);

            // Set the FlatStyle of the GroupBox.
            groupBox1.FlatStyle = FlatStyle.Flat;

            // Add the Button to the GroupBox.
            groupBox1.Controls.Add(button1);

            // Add the GroupBox to the Form.
            Controls.Add(groupBox1);

            // Create and initialize a GroupBox and a Button control.
            GroupBox groupBox2 = new GroupBox();
            Button button2 = new Button();
            button2.Location = new Point(20, 10);
            groupBox2.Location = new Point(0, 120);

            // Set the FlatStyle of the GroupBox.
            groupBox2.FlatStyle = FlatStyle.Standard;

            // Add the Button to the GroupBox.
            groupBox2.Controls.Add(button2);

            // Add the GroupBox to the Form.
            Controls.Add(groupBox2);
}
 

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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