System.Windows.Documents.TextPointer.GetNextInsertionPosition C# (CSharp) Method

		public TextPointer GetNextInsertionPosition (LogicalDirection direction)
		{
			return NativeDependencyObjectHelper.FromIntPtr (NativeMethods.text_pointer_get_next_insertion_position (native, direction)) as TextPointer;
		}

        public static TextPointer RemoveHyperlink(TextPointer start)
        {
            var backspacePosition = start.GetNextInsertionPosition(LogicalDirection.Backward);
            Hyperlink hyperlink;
            if (backspacePosition == null || !IsHyperlinkBoundaryCrossed(start, backspacePosition, out hyperlink))
            {
                return null;
            }

            // Remember caretPosition with forward gravity. This is necessary since we are going to delete
            // the hyperlink element preceeding caretPosition and after deletion current caretPosition
            // (with backward gravity) will follow content preceeding the hyperlink.
            // We want to remember content following the hyperlink to set new caret position at.

            var newCaretPosition = start.GetPositionAtOffset(0, LogicalDirection.Forward);

            // Deleting the hyperlink is done using logic below.

            // 1. Copy its children Inline to a temporary array.
            var hyperlinkChildren = hyperlink.Inlines;
            var inlines = new Inline[hyperlinkChildren.Count];
            hyperlinkChildren.CopyTo(inlines, 0);

            // 2. Remove each child from parent hyperlink element and insert it after the hyperlink.
            for (int i = inlines.Length - 1; i >= 0; i--)
            {
                hyperlinkChildren.Remove(inlines[i]);
                hyperlink.SiblingInlines.InsertAfter(hyperlink, inlines[i]);
            }

            // 3. Apply hyperlink's local formatting properties to inlines (which are now outside hyperlink scope).
            var localProperties = hyperlink.GetLocalValueEnumerator();
            var inlineRange = new TextRange(inlines[0].ContentStart, inlines[inlines.Length - 1].ContentEnd);

            while (localProperties.MoveNext())
            {
                var property = localProperties.Current;
                var dp = property.Property;
                object value = property.Value;

                if (!dp.ReadOnly &&
                    dp != Inline.TextDecorationsProperty && // Ignore hyperlink defaults.
                    dp != TextElement.ForegroundProperty &&
                    dp != BaseUriHelper.BaseUriProperty &&
                    !IsHyperlinkProperty(dp))
                {
                    inlineRange.ApplyPropertyValue(dp, value);
                }
            }

            // 4. Delete the (empty) hyperlink element.
            hyperlink.SiblingInlines.Remove(hyperlink);

            return newCaretPosition;
        }