DataServiceRequestArgs.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 / Client / System / Data / Services / Client / DataServiceRequestArgs.cs / 1305376 / DataServiceRequestArgs.cs
                        

                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//  
// This class represents additional metadata to be applied to a request
// sent from the client to a data service. 
//  
//---------------------------------------------------------------------
 
namespace System.Data.Services.Client
{
    using System.Collections.Generic;
 
    /// 
    /// This class represent additional metadata to be applied to a request 
    /// sent from the client to a data service. 
    /// 
    public class DataServiceRequestArgs 
    {
        /// 
        /// The headers collection for the request.
        /// This is just a storage, no validation is done on this. 
        /// 
        private readonly Dictionary headers; 
 
        /// 
        /// Constructs a new DataServiceRequestArgs instance 
        /// 
        public DataServiceRequestArgs()
        {
            this.headers = new Dictionary(EqualityComparer.Default); 
        }
 
        ///  
        /// Sets the mime type (ex. image/png) to be used when retrieving the stream.
        /// Note that no validation is done on the contents of this property. 
        /// It is the responsibility of the user to format it correctly to be used
        /// as the value of an HTTP Accept header.
        /// 
        public string AcceptContentType 
        {
            get { return this.GetHeaderValue(XmlConstants.HttpRequestAccept); } 
            set { this.SetHeaderValue(XmlConstants.HttpRequestAccept, value); } 
        }
 
        /// 
        /// Sets the Content-Type header to be used when sending the stream to the server.
        /// Note that no validation is done on the contents of this property.
        /// It is the responsibility of the user to format it correctly to be used 
        /// as the value of an HTTP Content-Type header.
        ///  
        public string ContentType 
        {
            get { return this.GetHeaderValue(XmlConstants.HttpContentType); } 
            set { this.SetHeaderValue(XmlConstants.HttpContentType, value);  }
        }

        ///  
        /// Sets the Slug header to be used when sending the stream to the server.
        /// Note that no validation is done on the contents of this property. 
        /// It is the responsibility of the user to format it correctly to be used 
        /// as the value of an HTTP Slug header.
        ///  
        public string Slug
        {
            get { return this.GetHeaderValue(XmlConstants.HttpSlug); }
            set { this.SetHeaderValue(XmlConstants.HttpSlug, value); } 
        }
 
        ///  
        /// Dictionary containing all the request headers to be used when retrieving the stream.
        /// The user should take care so as to not alter an HTTP header which will change 
        /// the meaning of the request.
        /// No validation is performed on the header names or values.
        /// This class will not attempt to fix up any of the headers specified and
        /// will try to use them "as is". 
        /// 
        public Dictionary Headers 
        { 
            get { return this.headers; }
        } 

        /// 
        /// Helper to return a value of the header.
        ///  
        /// The name of the header to get.
        /// The value of the header or null if the header is not set. 
        private string GetHeaderValue(string header) 
        {
            string value; 
            if (!this.headers.TryGetValue(header, out value))
            {
                return null;
            } 

            return value; 
        } 

        ///  
        /// Helper to set a value of the header
        /// 
        /// The name of the header to set.
        /// The value to set for the header. If this is null the header will be removed. 
        private void SetHeaderValue(string header, string value)
        { 
            if (value == null) 
            {
                if (this.headers.ContainsKey(header)) 
                {
                    this.headers.Remove(header);
                }
            } 
            else
            { 
                this.headers[header] = value; 
            }
        } 
    }
}

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

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