InputLanguageChangingEventArgs Class
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InputLanguageChangingEventArgs Class


Provides data for the InputLanguageChanging event.

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


public class InputLanguageChangingEventArgs : CancelEventArgs

System_CAPS_pubmethodInputLanguageChangingEventArgs(CultureInfo, Boolean)

Initializes a new instance of the InputLanguageChangingEventArgs class with the specified locale, character set, and acceptance.

System_CAPS_pubmethodInputLanguageChangingEventArgs(InputLanguage, Boolean)

Initializes a new instance of the InputLanguageChangingEventArgs class with the specified input language, character set, and acceptance of a language change.


Gets or sets a value indicating whether the event should be canceled.(Inherited from CancelEventArgs.)


Gets the locale of the requested input language.


Gets a value indicating the input language.


Gets a value indicating whether the system default font supports the character set required for the requested input language.


Determines whether the specified object is equal to the current object.(Inherited from Object.)


Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)


Serves as the default hash function. (Inherited from Object.)


Gets the Type of the current instance.(Inherited from Object.)


Creates a shallow copy of the current Object.(Inherited from Object.)


Returns a string that represents the current object.(Inherited from Object.)

You can use the data from the InputLanguageChangingEventArgs class to prepare to change Input Method Editors (IME) or swap right-to-left values. You can also change a thread's CurrentCulture and CurrentUICulture properties so that different resources get picked up. To prevent the input language from changing, set the Cancel property to true.

An InputLanguageChangingEventArgs identifies the requested input language and the character set of new input language. The Culture property identifies the locale of the requested language.

The InputLanguageChanging event precedes the InputLanguageChanged event.

For information about handling events, see Handling and Raising Events.

Legacy Code Example

The following code example demonstrates the use of this type. In the example, an event handler reports on the occurrence of the InputLanguageChanging event. This report helps you to learn when the event occurs and can assist you in debugging. To report on multiple events or on events that occur frequently, consider replacing Show with Console.WriteLine or appending the message to a multiline TextBox.

To run the example code, paste it into a project that contains an instance of type Form named Form1. Then ensure that the event handler is associated with the InputLanguageChanging event.

private void Form1_InputLanguageChanging(Object sender, InputLanguageChangingEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "InputLanguage", e.InputLanguage );
messageBoxCS.AppendFormat("{0} = {1}", "Culture", e.Culture );
messageBoxCS.AppendFormat("{0} = {1}", "SysCharSet", e.SysCharSet );
messageBoxCS.AppendFormat("{0} = {1}", "Cancel", e.Cancel );
MessageBox.Show(messageBoxCS.ToString(), "InputLanguageChanging Event" );

.NET Framework
Available since 1.1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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