Added some properties to TextChangeEventArgs.cs (MD Source Tree) in order to access them here :- https://github.com/mhutch/cbinding/blob/master/CBinding/Project/UnsavedFilesManager.cs#L61

gKOSw9pz (1).diff

141c141,179
< 		public IReadOnlyList<TextChange> TextChanges { get; }
---
> 		readonly ITextSource removedText;
>  		readonly ITextSource insertedText;
> 		int newOffset;
>  		readonly int offset;
> 
> 		/// <summary>
> 		/// The offset at which the change occurs.
> 		/// </summary>
> 		public int Offset {
> 			get { return offset; }
> 		}
> 
> 		/// <summary>
> 		/// The offset at which the change occurs relative to the new buffer.
> 		/// </summary>
> 		public int NewOffset {
> 			get { return newOffset; }
> 		}
> 
> 		/// <summary>
> 		/// The text that was removed.
> 		/// </summary>
> 		public ITextSource RemovedText {
> 			get { return removedText; }
> 		}
> 
> 		/// <summary>
> 		/// The number of characters removed.
> 		/// </summary>
> 		public int RemovalLength {
> 			get { return removedText.Length; }
> 		}
> 
> 		/// <summary>
> 		/// The text that was inserted.
> 		/// </summary>
> 		public ITextSource InsertedText {
> 			get { return insertedText; }
> 		}
143a182,188
> 		/// The number of characters inserted.
> 		/// </summary>
> 		public int InsertionLength {
> 			get { return insertedText.Length; }
> 		}
> 		public IReadOnlyList<TextChange> TextChanges { get; }
>     	/// <summary>
147c192
< 		public TextChangeEventArgs (int offset, string removedText, string insertedText) : this(offset, offset, removedText, insertedText) {}
---
> 		public TextChangeEventArgs (int offset, string removedText, string insertedText) : this (offset, offset, removedText, insertedText) {}
168c213
< 				new TextChange (offset, newOffset, removedText, insertedText)
---
> 				new TextChange (this.offset, this.newOffset, this.removedText, this.insertedText)