XmlException.cs source code in C# .NET

                        Code:
                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Xml / System / Xml / XmlException.cs / 1 / XmlException.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
//-----------------------------------------------------------------------------
 
namespace System.Xml { 
    using System;
    using System.IO; 
    using System.Resources;
    using System.Runtime.Serialization;
    using System.Text;
    using System.Diagnostics; 
    using System.Security.Permissions;
    using System.Globalization; 
    using System.Threading; 

    ///  
    ///    Returns detailed information about the last parse error, including the error
    ///       number, line number, character position, and a text description.
    /// 
    [Serializable] 
    public class XmlException : SystemException {
        string res; 
        string[] args; // this field is not used, it's here just V1.1 serialization compatibility 
        int lineNumber;
        int linePosition; 

        [OptionalField]
        string sourceUri;
 
        // message != null for V1 exceptions deserialized in Whidbey
        // message == null for V2 or higher exceptions; the exception message is stored on the base class (Exception._message) 
        string message; 

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

            // deserialize optional members 
            sourceUri = string.Empty; 
            string version = null;
            foreach ( SerializationEntry e in info ) { 
                switch ( e.Name ) {
                    case "sourceUri":
                        sourceUri = (string)e.Value;
                        break; 
                    case "version":
                        version = (string)e.Value; 
                        break; 
                }
            } 

            if ( version == null ) {
                // deserializing V1 exception
                message = CreateMessage( res, args, lineNumber, linePosition ); 
            }
            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("lineNumber",         lineNumber);
            info.AddValue("linePosition",       linePosition); 
            info.AddValue("sourceUri",          sourceUri);
            info.AddValue("version",            "2.0");
        }
 
        //provided to meet the ECMA standards
        public XmlException() : this(null) { 
        } 

        //provided to meet the ECMA standards 
        public XmlException(String message) : this (message, ((Exception)null), 0, 0) {
#if DEBUG
            Debug.Assert(message == null || !message.StartsWith("Xml_", StringComparison.Ordinal), "Do not pass a resource here!");
#endif 
        }
 
        //provided to meet ECMA standards 
        public XmlException(String message, Exception innerException) : this (message, innerException, 0, 0) {
        } 

 	//provided to meet ECMA standards
        public XmlException(String message, Exception innerException, int lineNumber, int linePosition) :
            this( message, innerException, lineNumber, linePosition, null ) { 
        }
 
        internal XmlException(String message, Exception innerException, int lineNumber, int linePosition, string sourceUri) : 
            this((message == null ? Res.Xml_DefaultException : Res.Xml_UserException), new string[] { message }, innerException, lineNumber, linePosition, sourceUri ) {
        } 

        internal XmlException(string res, string[] args) :
            this(res, args, null, 0, 0, null) {}
 
        internal XmlException(string res, string[] args, string sourceUri) :
            this(res, args, null, 0, 0, sourceUri) {} 
 
        internal XmlException(string res, string arg) :
            this(res, new string[] { arg }, null, 0, 0, null) {} 

        internal XmlException(string res, string arg, string sourceUri) :
            this(res, new string[] { arg }, null, 0, 0, sourceUri) {}
 
        internal XmlException(string res, String arg,  IXmlLineInfo lineInfo) :
            this(res, new string[] { arg }, lineInfo, null) {} 
 
        internal XmlException(string res, String arg, Exception innerException, IXmlLineInfo lineInfo) :
            this(res, new string[] { arg }, innerException, (lineInfo == null ? 0 : lineInfo.LineNumber), (lineInfo == null ? 0 : lineInfo.LinePosition), null) {} 

        internal XmlException(string res, String arg,  IXmlLineInfo lineInfo, string sourceUri) :
            this(res, new string[] { arg }, lineInfo, sourceUri) {}
 
        internal XmlException(string res, string[] args,  IXmlLineInfo lineInfo) :
            this(res, args, lineInfo, null) {} 
 
        internal XmlException(string res, string[] args,  IXmlLineInfo lineInfo, string sourceUri) :
            this (res, args, null, (lineInfo == null ? 0 : lineInfo.LineNumber), (lineInfo == null ? 0 : lineInfo.LinePosition), sourceUri) { 
        }

        internal XmlException(string res,  int lineNumber, int linePosition) :
            this(res, (string[])null, null, lineNumber, linePosition) {} 

        internal XmlException(string res, string arg, int lineNumber, int linePosition) : 
            this(res,  new string[] { arg }, null, lineNumber, linePosition, null) {} 

        internal XmlException(string res, string arg, int lineNumber, int linePosition, string sourceUri) : 
            this(res,  new string[] { arg }, null, lineNumber, linePosition, sourceUri) {}

        internal XmlException(string res, string[] args, int lineNumber, int linePosition) :
            this( res, args, null, lineNumber, linePosition, null ) {} 

        internal XmlException(string res, string[] args, int lineNumber, int linePosition, string sourceUri) : 
            this( res, args, null, lineNumber, linePosition, sourceUri ) {} 

        internal XmlException(string res, string[] args, Exception innerException, int lineNumber, int linePosition) : 
            this( res, args, innerException, lineNumber, linePosition, null ) {}

        internal XmlException(string res, string[] args, Exception innerException, int lineNumber, int linePosition, string sourceUri) :
            base( CreateMessage(res, args, lineNumber, linePosition), innerException ) { 
            HResult = HResults.Xml;
            this.res = res; 
            this.args = args; 
            this.sourceUri = sourceUri;
            this.lineNumber = lineNumber; 
            this.linePosition = linePosition;
        }

        private static string CreateMessage(string res, string[] args, int lineNumber, int linePosition) { 
            try {
                string message = Res.GetString(res, args); 
 
                if (lineNumber != 0) {
                    string[] msg = new string[2]; 
                    msg[0] = lineNumber.ToString(CultureInfo.InvariantCulture);
                    msg[1] = linePosition.ToString(CultureInfo.InvariantCulture);
                    message += " " + Res.GetString(Res.Xml_ErrorPosition, msg);
                } 
                return message;
            } 
            catch ( MissingManifestResourceException ) { 
                return "UNKNOWN("+res+")";
            } 
        }

        internal static string[] BuildCharExceptionStr(char ch) {
            string[] aStringList= new string[2]; 
            if ( (int)ch == 0 ) {
                aStringList[0] = "."; 
            } 
            else {
                aStringList[0] = ch.ToString(CultureInfo.InvariantCulture); 
            }
            aStringList[1] = "0x"+ ((int)ch).ToString("X2", CultureInfo.InvariantCulture);
            return aStringList;
        } 

        public int LineNumber { 
            get { return this.lineNumber; } 
        }
 
        public int LinePosition {
            get { return this.linePosition; }
        }
 
        public string SourceUri {
            get { return this.sourceUri; } 
        } 

        public override string Message { 
            get {
                return ( message == null ) ? base.Message : message;
            }
        } 

        internal string ResString { 
            get { 
                return res;
            } 
        }

        internal static bool IsCatchableException(Exception e) {
            Debug.Assert(e != null, "Unexpected null exception"); 
            return !(
                e is StackOverflowException || 
                e is OutOfMemoryException || 
                e is ThreadAbortException ||
                e is ThreadInterruptedException || 
                e is NullReferenceException ||
                e is AccessViolationException
            );
        } 
    };
} // namespace System.Xml 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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XmlException.cs source code in C# .NET

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