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IsEmpty Property

Visual Studio .NET 2003

Indicates whether the anchor point is equal to the active point.

[Visual Basic .NET]
Public ReadOnly Property IsEmpty() As Boolean
[Visual Basic 6]
Property Get IsEmpty() As Boolean
[C++]
HRESULT __stdcall get_IsEmpty(
   /* [out, retval] */ VARIANT_BOOL* retVal
);
[C#]
public bool IsEmpty {get;}
[JScript .NET]
public function get IsEmpty() : Boolean

Return Value

True if the anchor point is equal to the active point, False if not.

Remarks

Returns whether the selected text's anchor and active ends are at the same location in the text document.

Example

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

See Also

Applies To: TextSelection Object

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