IBufferGraph.MapUpToFirstMatch Method (SnapshotSpan, SpanTrackingMode, Predicate<ITextSnapshot>)
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
'宣告
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: System.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.