TargetControlTypeCache.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / Orcas / RTM / ndp / fx / src / xsp / System / Web / Extensions / ui / TargetControlTypeCache.cs / 1 / TargetControlTypeCache.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.UI { 
    using System; 
    using System.Collections;
 
    // Cache TargetControlTypeAttributes to improve performance
    internal static class TargetControlTypeCache {
        // Maps Type (extender control) to Type[] (valid target control types)
        private static readonly Hashtable _targetControlTypeCache = Hashtable.Synchronized(new Hashtable()); 

        public static Type[] GetTargetControlTypes(Type extenderControlType) { 
            Type[] types = (Type[])_targetControlTypeCache[extenderControlType]; 
            if (types == null) {
                types = GetTargetControlTypesInternal(extenderControlType); 
                _targetControlTypeCache[extenderControlType] = types;
            }
            return types;
        } 

        private static Type[] GetTargetControlTypesInternal(Type extenderControlType) { 
            object[] attrs = extenderControlType.GetCustomAttributes(typeof(TargetControlTypeAttribute), true); 
            Type[] types = new Type[attrs.Length];
            for (int i = 0; i < attrs.Length; i++) { 
                types[i] = ((TargetControlTypeAttribute)attrs[i]).TargetControlType;
            }
            return types;
        } 
    }
} 

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

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