16 references to IsNull
PresentationFramework (16)
MS\Internal\Text\DynamicPropertyReader.cs (1)
252Debug.Assert(!position.IsNull);
MS\Internal\Text\TextProperties.cs (1)
155if (!position.IsNull)
System\Windows\Documents\DocumentSequenceTextContainer.cs (3)
674if (highlightTransitionPosition.IsNull) 684Invariant.Assert(!highlightTransitionPosition.IsNull, "Highlight start not followed by highlight end!"); 1019if (!textPosition.IsNull)
System\Windows\Documents\FixedDocument.cs (3)
1074if (highlightTransitionPosition.IsNull) 1101Debug.Assert(!highlightTransitionPosition.IsNull, "Highlight start not followed by highlight end!"); 1117Debug.Assert(!highlightTransitionPosition.IsNull, "Highlight start not followed by highlight end!");
System\Windows\Documents\Highlights.cs (5)
131if (!changePosition.IsNull) 133if (closestChangePosition.IsNull) 190if (changePosition.IsNull || 358if (highlightTransitionPosition.IsNull) 364Invariant.Assert(!highlightTransitionPosition.IsNull, "Highlight start not followed by highlight end!");
System\Windows\Documents\Speller.cs (2)
234while (!pointer.IsNull) 1331if (!nextErrorTransition.IsNull)
System\Windows\Documents\SpellerStatusTable.cs (1)
235Invariant.Assert(transitionPosition.IsNull || textPosition.CompareTo(transitionPosition) != 0);