Metodo EditPoint.LessThan (TextPoint)

Articolo
10/30/2012

Restituisce un valore che indica se il valore della proprietà AbsoluteCharOffset dell'oggetto TextPoint chiamato è minore di quello dell'oggetto EditPoint specificato.

Spazio dei nomi: EnvDTE
Assembly: EnvDTE (in EnvDTE.dll)

Sintassi

'Dichiarazione
Function LessThan ( _
    Point As TextPoint _
) As Boolean

bool LessThan(
    TextPoint Point
)

bool LessThan(
    [InAttribute] TextPoint^ Point
)

abstract LessThan : 
        Point:TextPoint -> bool

function LessThan(
    Point : TextPoint
) : boolean

Parametri

Point
Tipo: EnvDTE.TextPoint
Necessario.Oggetto TextPoint da confrontare all'oggetto punto chiamante.

Valore restituito

Tipo: System.Boolean
Valore Boolean true se il valore della proprietà AbsoluteCharOffset di Point è maggiore del valore della proprietà AbsoluteCharOffset dell'oggetto chiamante.

Note

LessThan genera un'eccezione ArgumentException se Point non si trova nello stesso documento dell'oggetto chiamante.Con l'oggetto VirtualPoint, il metodo LessThan confronta le posizioni virtuali se l'argomento è un oggetto VirtualPoint.In caso contrario confronta le posizioni "fisiche".

Esempi

Sub LessThanExample(ByVal dte As DTE)

    ' Create a new text file.
    dte.ItemOperations.NewFile()
    Dim txtDoc As TextDocument = _
        CType(dte.ActiveDocument.Object(), TextDocument)

    ' Create an edit point at the empty text document's StartPoint 
    ' and EndPoint; CompareEditPoints displays "point1 and point2
    ' occupy the same location."
    Dim point1 As EditPoint = txtDoc.StartPoint.CreateEditPoint()
    Dim point2 As EditPoint = txtDoc.EndPoint.CreateEditPoint()
    CompareEditPoints(point1, point2)

    ' Insert ten lines of text.
    Dim i As Integer
    For i = 1 To 10
        point1.Insert("Line " & i.ToString() & vbCrLf)
    Next

    ' Create an edit point at the text document's StartPoint and 
    ' EndPoint; CompareEditPoints displays "point1 comes before point2."
    point1 = txtDoc.StartPoint.CreateEditPoint()
    point2 = txtDoc.EndPoint.CreateEditPoint()
    CompareEditPoints(point1, point2)

End Sub

Sub CompareEditPoints(ByVal point1 As EditPoint, _
    ByVal point2 As EditPoint)

    If point1.LessThan(point2) Then
        MsgBox("point1 comes before point2.")
    ElseIf point1.GreaterThan(point2) Then
        MsgBox("point2 comes before point1.")
    ElseIf (point1.EqualTo(point2)) Then
        MsgBox("point1 and point2 occupy the same location.")
    End If

End Sub

void LessThanExample(DTE dte)
{
    // Create a new text file.
    dte.ItemOperations.NewFile(@"General\Text File", "", 
        Constants.vsViewKindPrimary);
    TextDocument txtDoc = 
        (TextDocument)dte.ActiveDocument.Object("");

    // Create an edit point at the empty text document's StartPoint 
    // and EndPoint; CompareEditPoints displays "point1 and point2
    // occupy the same location."
    EditPoint point1 = txtDoc.StartPoint.CreateEditPoint();
    EditPoint point2 = txtDoc.EndPoint.CreateEditPoint();
    CompareEditPoints(point1, point2);

    // Insert ten lines of text.
    for (int i = 1; i <= 10; i++)
    {
        point1.Insert("Line " + i.ToString() + Environment.NewLine);
    }

    // Create an edit point at the text document's StartPoint and 
    // EndPoint; CompareEditPoints displays "point1 comes before point2."
    point1 = txtDoc.StartPoint.CreateEditPoint();
    point2 = txtDoc.EndPoint.CreateEditPoint();
    CompareEditPoints(point1, point2);
}

void CompareEditPoints(EditPoint point1, EditPoint point2)
{
    if (point1.LessThan(point2))
        MessageBox.Show("point1 comes before point2.");
    else if (point1.GreaterThan(point2))
        MessageBox.Show("point2 comes before point1.");
    else if (point1.EqualTo(point2))
        MessageBox.Show("point1 and point2 occupy the same location.");
}

Sicurezza di .NET Framework

Attendibilità totale per il chiamante immediato. Impossibile utilizzare questo membro in codice parzialmente attendibile. Per ulteriori informazioni, vedere Utilizzo di librerie da codice parzialmente attendibile.