SingleResultAttribute.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataWeb / Server / System / Data / Services / SingleResultAttribute.cs / 1305376 / SingleResultAttribute.cs
                        

                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//  
//      Provides a class to decorate custom service operations with
//      a single-result attribute. 
//  
//
// @owner  [....] 
//---------------------------------------------------------------------

namespace System.Data.Services
{ 
    using System;
    using System.Diagnostics; 
    using System.Reflection; 

    ///  
    /// Use this attribute on a DataService service operation method
    /// to indicate than the IQueryable returned should contain a single element.
    /// 
    [AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = true)] 
    public sealed class SingleResultAttribute : Attribute
    { 
        /// Declares a new  instance. 
        public SingleResultAttribute()
        { 
        }

        /// Checks whether the specified method has a SingleResultAttribute declared on it.
        /// Method to check. 
        /// 
        /// true if the specified method (in its declared type or in an 
        /// ancestor declaring the type) has the SingleResultAttribute set. 
        /// 
        internal static bool MethodHasSingleResult(MethodInfo method) 
        {
            Debug.Assert(method != null, "method != null");
            return method.GetCustomAttributes(typeof(SingleResultAttribute), true).Length > 0;
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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