IBufferGraph.MapUpToFirstMatch Method (SnapshotSpan, SpanTrackingMode, Predicate<ITextSnapshot>)

Article
03/12/2015

Maps a span in the current snapshot of some buffer that is a member of the buffer graph up to a sequence of spans in a snapshot of some buffer that is selected by a predicate.

Namespace: Microsoft.VisualStudio.Text.Projection
Assembly: Microsoft.VisualStudio.Text.Data (in Microsoft.VisualStudio.Text.Data.dll)

Syntax

'Declaration
Function MapUpToFirstMatch ( _
    span As SnapshotSpan, _
    trackingMode As SpanTrackingMode, _
    match As Predicate(Of ITextSnapshot) _
) As NormalizedSnapshotSpanCollection

NormalizedSnapshotSpanCollection MapUpToFirstMatch(
    SnapshotSpan span,
    SpanTrackingMode trackingMode,
    Predicate<ITextSnapshot> match
)

NormalizedSnapshotSpanCollection^ MapUpToFirstMatch(
    SnapshotSpan span, 
    SpanTrackingMode trackingMode, 
    Predicate<ITextSnapshot^>^ match
)

abstract MapUpToFirstMatch : 
        span:SnapshotSpan * 
        trackingMode:SpanTrackingMode * 
        match:Predicate<ITextSnapshot> -> NormalizedSnapshotSpanCollection

function MapUpToFirstMatch(
    span : SnapshotSpan, 
    trackingMode : SpanTrackingMode, 
    match : Predicate<ITextSnapshot>
) : NormalizedSnapshotSpanCollection

Parameters

span
Type: Microsoft.VisualStudio.Text.SnapshotSpan

A span in some buffer in the buffer graph.

trackingMode
Type: Microsoft.VisualStudio.Text.SpanTrackingMode

How span is tracked to the current snapshot if necessary.

match
Type: Predicate<ITextSnapshot>

The predicate that identifies the target buffer.

Return Value

Type: Microsoft.VisualStudio.Text.NormalizedSnapshotSpanCollection
A collection of zero or more snapshot spans in the top buffer to which the span maps.

Exceptions

Exception	Condition
ArgumentNullException	span.Snapshot or match is nulla null reference (Nothing in Visual Basic).
ArgumentOutOfRangeException	trackingMode is not a valid SpanTrackingMode.

Remarks

match is called on each text buffer in the graph until it returns true. After that the predicate is not called again.

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

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