XPathException.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Xml / System / Xml / XPath / XPathException.cs / 1 / XPathException.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
//-----------------------------------------------------------------------------
 
namespace System.Xml.XPath { 
    using System;
    using System.IO; 
    using System.Resources;
    using System.Runtime.Serialization;
    using System.Diagnostics;
    using System.Security.Permissions; 

    // Represents the exception that is thrown when there is error processing an 
    // XPath expression. 
    [Serializable]
    public class XPathException : SystemException { 
        // we need to keep this members for V1 serialization compatibility
        string   res;
        string[] args;
 
        // message != null for V1 & V2 exceptions deserialized in Whidbey
        // message == null for created V2 exceptions; the exception message is stored in Exception._message 
        string   message; 

        protected XPathException(SerializationInfo info, StreamingContext context) : base(info, context) { 
            res  = (string  ) info.GetValue("res" , typeof(string  ));
            args = (string[]) info.GetValue("args", typeof(string[]));

            // deserialize optional members 
            string version = null;
            foreach ( SerializationEntry e in info ) { 
                if ( e.Name == "version" ) { 
                    version = (string)e.Value;
                } 
            }

            if (version == null) {
                // deserializing V1 exception 
                message = CreateMessage(res, args);
            } 
            else { 
                // deserializing V2 or higher exception -> exception message is serialized by the base class (Exception._message)
                message = null; 
            }
        }

        [SecurityPermissionAttribute(SecurityAction.Demand,SerializationFormatter=true)] 
        public override void GetObjectData(SerializationInfo info, StreamingContext context) {
            base.GetObjectData(info, context); 
            info.AddValue("res" , res ); 
            info.AddValue("args", args);
            info.AddValue("version", "2.0"); 
        }

        public XPathException() : this (string.Empty, (Exception) null) {}
 
        public XPathException(string message) : this (message, (Exception) null) {}
 
        public XPathException(string message, Exception innerException) : 
            this(Res.Xml_UserException, new string[] { message }, innerException) {
        } 

        internal static XPathException Create(string res) {
            return new XPathException(res, (string[])null);
        } 

        internal static XPathException Create(string res, string arg) { 
            return new XPathException(res, new string[] { arg }); 
        }
 
        internal static XPathException Create(string res, string arg, string arg2) {
            return new XPathException(res, new string[] { arg, arg2 });
        }
 
        internal static XPathException Create(string res, string arg, Exception innerException) {
            return new XPathException(res, new string[] { arg }, innerException); 
        } 

        private XPathException(string res, string[] args) : 
            this(res, args, null) {
        }

        private XPathException(string res, string[] args, Exception inner) : 
            base(CreateMessage(res, args), inner) {
            HResult = HResults.XmlXPath; 
            this.res = res; 
            this.args = args;
        } 

        private static string CreateMessage(string res, string[] args) {
            try {
                string message = Res.GetString(res, args); 
                if (message == null)
                    message = "UNKNOWN("+res+")"; 
                return message; 
            }
            catch ( MissingManifestResourceException ) { 
                return "UNKNOWN("+res+")";
            }
        }
 
        public override string Message {
            get { 
                return (message == null) ? base.Message : message; 
            }
        } 
    }
}


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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