namespace System.Xml { public abstract class XmlCharacterData : XmlLinkedNode { public virtual string Data { get; set; } public virtual int Length { get; } public virtual void AppendData(string strData); public virtual void DeleteData(int offset, int count); public virtual void InsertData(int offset, string strData); public virtual void ReplaceData(int offset, int count, string strData); public virtual string Substring(int offset, int count); } }