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ComboBox.FlatStyle Property

Gets or sets the appearance of the ComboBox.

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 enumeration values that specifies the appearance of the control. The options are Flat, Popup, Standard, and System. The default is Standard.

ExceptionCondition
InvalidEnumArgumentException

The specified value is not one of the values of FlatStyle.

Starting with the .NET Framework 4.5.2, if the FlatStyle property is set to Flat or Popup, the drop-down arrow may be resized. Resizing is determined by the system DPI setting when the app.config file contains the following entry:

<appSettings>
  <add key="EnableWindowsFormsHighDpiAutoResizing" value="true" />
</appSettings>

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

.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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