SecurityKeyIdentifier.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / IdentityModel / System / IdentityModel / Tokens / SecurityKeyIdentifier.cs / 1305376 / SecurityKeyIdentifier.cs
                        
                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------

namespace System.IdentityModel.Tokens 
{
    using System.Collections; 
    using System.Collections.Generic; 
    using System.IO;
    using System.Globalization; 

    public class SecurityKeyIdentifier : IEnumerable
    {
        const int InitialSize = 2; 
        readonly List clauses;
        bool isReadOnly; 
 
        public SecurityKeyIdentifier()
        { 
            this.clauses = new List(InitialSize);
        }

        public SecurityKeyIdentifier(params SecurityKeyIdentifierClause[] clauses) 
        {
            if (clauses == null) 
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("clauses");
            } 
            this.clauses = new List(clauses.Length);
            for (int i = 0; i < clauses.Length; i++)
            {
                Add(clauses[i]); 
            }
        } 
 
        public SecurityKeyIdentifierClause this[int index]
        { 
            get { return this.clauses[index]; }
        }

        public bool CanCreateKey 
        {
            get 
            { 
                for (int i = 0; i < this.Count; i++)
                { 
                    if (this[i].CanCreateKey)
                    {
                        return true;
                    } 
                }
                return false; 
            } 
        }
 
        public int Count
        {
            get { return this.clauses.Count; }
        } 

        public bool IsReadOnly 
        { 
            get { return this.isReadOnly; }
        } 

        public void Add(SecurityKeyIdentifierClause clause)
        {
            if (this.isReadOnly) 
            {
                throw  DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.ObjectIsReadOnly))); 
            } 
            if (clause == null)
            { 
                throw  DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("clause"));
            }
            this.clauses.Add(clause);
        } 

        public SecurityKey CreateKey() 
        { 
            for (int i = 0; i < this.Count; i++)
            { 
                if (this[i].CanCreateKey)
                {
                    return this[i].CreateKey();
                } 
            }
            throw  DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.KeyIdentifierCannotCreateKey))); 
        } 

        public TClause Find() where TClause : SecurityKeyIdentifierClause 
        {
            TClause clause;
            if (!TryFind(out clause))
            { 
                throw  DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentException(SR.GetString(SR.NoKeyIdentifierClauseFound, typeof(TClause)), "TClause"));
            } 
            return clause; 
        }
 
        public IEnumerator GetEnumerator()
        {
            return this.clauses.GetEnumerator();
        } 

        public void MakeReadOnly() 
        { 
            this.isReadOnly = true;
        } 

        public override string ToString()
        {
            using (StringWriter writer = new StringWriter(CultureInfo.InvariantCulture)) 
            {
                writer.WriteLine("SecurityKeyIdentifier"); 
                writer.WriteLine("    ("); 
                writer.WriteLine("    IsReadOnly = {0},", this.IsReadOnly);
                writer.WriteLine("    Count = {0}{1}", this.Count, this.Count > 0 ? "," : ""); 
                for (int i = 0; i < this.Count; i++)
                {
                    writer.WriteLine("    Clause[{0}] = {1}{2}", i, this[i], i < this.Count - 1 ? "," : "");
                } 
                writer.WriteLine("    )");
                return writer.ToString(); 
            } 
        }
 
        public bool TryFind(out TClause clause) where TClause : SecurityKeyIdentifierClause
        {
            for (int i = 0; i < this.clauses.Count; i++)
            { 
                TClause c = this.clauses[i] as TClause;
                if (c != null) 
                { 
                    clause = c;
                    return true; 
                }
            }
            clause = null;
            return false; 
        }
 
        IEnumerator IEnumerable.GetEnumerator() 
        {
            return this.GetEnumerator(); 
        }
    }
}
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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SecurityKeyIdentifier.cs source code in C# .NET

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