PreviewKeyDownEventArgs.IsInputKey Property
Definition
Important
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Gets or sets a value indicating whether a key is a regular input key.
public:
property bool IsInputKey { bool get(); void set(bool value); };
public bool IsInputKey { get; set; }
member this.IsInputKey : bool with get, set
Public Property IsInputKey As Boolean
Property Value
true
if the key is a regular input key; otherwise, false
.
Examples
The following code example demonstrates the use of this member. In the example, an event handler reports on the occurrence of the Control.PreviewKeyDown 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 MessageBox.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 a type that inherits from Control, such as a Button or ComboBox. Then name the instance Control1
and ensure that the event handler is associated with the Control.PreviewKeyDown event.
private void Control1_PreviewKeyDown(Object sender, PreviewKeyDownEventArgs e) {
System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "Alt", e.Alt );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Control", e.Control );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "KeyCode", e.KeyCode );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "KeyValue", e.KeyValue );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "KeyData", e.KeyData );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Modifiers", e.Modifiers );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Shift", e.Shift );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "IsInputKey", e.IsInputKey );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "PreviewKeyDown Event" );
}
Private Sub Control1_PreviewKeyDown(sender as Object, e as PreviewKeyDownEventArgs) _
Handles Control1.PreviewKeyDown
Dim messageBoxVB as New System.Text.StringBuilder()
messageBoxVB.AppendFormat("{0} = {1}", "Alt", e.Alt)
messageBoxVB.AppendLine()
messageBoxVB.AppendFormat("{0} = {1}", "Control", e.Control)
messageBoxVB.AppendLine()
messageBoxVB.AppendFormat("{0} = {1}", "KeyCode", e.KeyCode)
messageBoxVB.AppendLine()
messageBoxVB.AppendFormat("{0} = {1}", "KeyValue", e.KeyValue)
messageBoxVB.AppendLine()
messageBoxVB.AppendFormat("{0} = {1}", "KeyData", e.KeyData)
messageBoxVB.AppendLine()
messageBoxVB.AppendFormat("{0} = {1}", "Modifiers", e.Modifiers)
messageBoxVB.AppendLine()
messageBoxVB.AppendFormat("{0} = {1}", "Shift", e.Shift)
messageBoxVB.AppendLine()
messageBoxVB.AppendFormat("{0} = {1}", "IsInputKey", e.IsInputKey)
messageBoxVB.AppendLine()
MessageBox.Show(messageBoxVB.ToString(),"PreviewKeyDown Event")
End Sub
Applies to
Athugasemdir
https://aka.ms/ContentUserFeedback.
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