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Propriedade TextSelection.IsEmpty

Obtém se o ponto de âncora é igual ao ponto ativo.

Namespace:  EnvDTE
Assembly:  EnvDTE (em EnvDTE.dll)

Sintaxe

'Declaração
ReadOnly Property IsEmpty As Boolean
    Get
bool IsEmpty { get; }
property bool IsEmpty {
    bool get ();
}
abstract IsEmpty : bool
function get IsEmpty () : boolean

Valor de propriedade

Tipo: System.Boolean
Um valor booleano indicando True se o ponto de âncora é igual ao ponto ativo, False se não.

Comentários

IsEmptyRetorna se a âncora o texto selecionado e o active extremidades estão no mesmo local do documento de texto.

Exemplos

Sub IsEmptyExample()
    ' Before running this example, open a text document.
    Dim objSel As TextSelection = DTE.ActiveDocument.Selection
    If objSel.IsEmpty Then
        ' If there is no text selected, swap the words before and after 
        ' the insertion point. We begin by selecting the word before 
        ' the insertion point.
        objSel.WordLeft(True)
        If Not objSel.IsEmpty Then
            ' We can continue only if the selection was not already at 
            ' the beginning of the document.
            Dim strBefore As String = objSel.Text

            ' The text is saved in strBefore; now delete it and move 
            ' past the following word.
            objSel.Delete()
            objSel.WordRight(True)
            If objSel.Text.StartsWith(" ") Or objSel.Text.StartsWith(Microsoft.VisualBasic.ControlChars.Tab) Then
                ' The previous call to WordRight may have skipped some 
                ' white space instead of an actual word. In that case, 
                ' we should call it again.
                objSel.WordRight(True)
            End If

            ' Insert the new text at the end of the selection.
            objSel.Insert(strBefore, vsInsertFlags.vsInsertFlagsInsertAtEnd)
        End If
    Else
        ' If some text is selected, replace the following word with the 
        ' selected text.
        Dim strSelected As String = objSel.Text

        objSel.MoveToPoint(objSel.BottomPoint)
        objSel.WordRight(True)
        If objSel.Text.StartsWith(" ") Or objSel.Text.StartsWith(Microsoft.VisualBasic.ControlChars.Tab) Then
            ' The previous call to WordRight may have skipped some 
            ' white space instead of an actual word. In that case, we 
            ' should call it again.
            objSel.WordRight(True)
        End If

        ' Insert the text, overwriting the existing text and leaving 
        ' the selection containing the inserted text.
        objSel.Insert(strSelected, vsInsertFlags.vsInsertFlagsContainNewText)
    End If
End Sub

Segurança do .NET Framework

Consulte também

Referência

TextSelection Interface

Namespace EnvDTE