HasValueChanged プロパティ

編集モード中にコンテンツが変更されるかどうかを決定します（読み取り専用）。

シンタックス

Visual Basic

'宣言
 
Public ReadOnly Property HasValueChanged As Boolean

C#

public bool HasValueChanged {get;}

解説

エディターが編集モードを離れると、このプロパティは False にリセットされます。つまり、エディターは編集モード中は有効です。編集モードでない時、このプロパティは False を返します。

使用例

Visual Basic

Private Sub Button1_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
        ' When edit mode ends, the value will be committed and OriginalValue and
        ' HasValueChanged will be reset.
        Me.textEditor1.EndEditMode(True, False)

        Me.textEditor1.Value = "A"

        ' HasValueChanged and OriginalValue properties are only applicable during
        ' edit mode. These properties are set when the value of the editor is
        ' modified after entering edit mode.
        Me.textEditor1.StartEditMode()

        ' The following will print out 'A' and False respectively.
        Debug.WriteLine("After entering edit mode:")
        Debug.WriteLine("OriginalValue = '" & Me.textEditor1.OriginalValue & "'")
        Debug.WriteLine("HasValueChanged = " & Me.textEditor1.HasValueChanged)

        Me.textEditor1.Value = "B"

        ' The Value was modified to B above. The following will print out 'A' and 
        ' True respectively.
        Debug.WriteLine("After changing value to B:")
        Debug.WriteLine("OriginalValue = '" & Me.textEditor1.OriginalValue & "'")
        Debug.WriteLine("HasValueChanged = " & Me.textEditor1.HasValueChanged)

        ' When edit mode ends, the value will be committed and HasValueChanged will 
        ' be reset.
        Me.textEditor1.EndEditMode(True, False)

        ' The following will print out False.
        Debug.WriteLine("After exiting edit mode:")
        Debug.WriteLine("HasValueChanged = " & Me.textEditor1.HasValueChanged)
    End Sub

C#

public void button1_Click( object sender, RoutedEventArgs e )
{
	// When edit mode ends, the value will be committed and OriginalValue and
	// HasValueChanged will be reset.
	this.textEditor1.EndEditMode( true, false );

	this.textEditor1.Value = "A";

	// HasValueChanged and OriginalValue properties are only applicable during
	// edit mode. These properties are set when the value of the editor is
	// modified after entering edit mode.
	this.textEditor1.StartEditMode( );

	// The following will print out 'A' and False respectively.
	Debug.WriteLine( "After entering edit mode:" );
	Debug.WriteLine( "OriginalValue = '" + this.textEditor1.OriginalValue + "'" );
	Debug.WriteLine( "HasValueChanged = " + this.textEditor1.HasValueChanged );

	this.textEditor1.Value = "B";

	// The Value was modified to B above. The following will print out 'A' and 
	// True respectively.
	Debug.WriteLine( "After changing value to B:" );
	Debug.WriteLine( "OriginalValue = '" + this.textEditor1.OriginalValue + "'" );
	Debug.WriteLine( "HasValueChanged = " + this.textEditor1.HasValueChanged );

	// When edit mode ends, the value will be committed and HasValueChanged will 
	// be reset.
	this.textEditor1.EndEditMode( true, false );

	// The following will print out False.
	Debug.WriteLine( "After exiting edit mode:" );
	Debug.WriteLine( "HasValueChanged = " + this.textEditor1.HasValueChanged );
}