ConnectionProviderAttribute.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebParts / ConnectionProviderAttribute.cs / 1 / ConnectionProviderAttribute.cs
                        

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

namespace System.Web.UI.WebControls.WebParts { 
 
    using System;
    using System.ComponentModel; 
    using System.Reflection;
    using System.Security.Permissions;

    [AttributeUsage(AttributeTargets.Method)] 
    [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
    [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] 
    public class ConnectionProviderAttribute : Attribute { 

        private string _displayName; 
        private string _id;
        private Type _connectionPointType;
        private bool _allowsMultipleConnections;
 
        public ConnectionProviderAttribute(string displayName) {
            if (String.IsNullOrEmpty(displayName)) { 
                throw new ArgumentNullException("displayName"); 
            }
 
            _displayName = displayName;
            _allowsMultipleConnections = true;
        }
 
        public ConnectionProviderAttribute(string displayName, string id) : this(displayName) {
            if (String.IsNullOrEmpty(id)) { 
                throw new ArgumentNullException("id"); 
            }
 
            _id = id;
        }

        public ConnectionProviderAttribute(string displayName, Type connectionPointType) : this(displayName) { 
            if (connectionPointType == null) {
                throw new ArgumentNullException("connectionPointType"); 
            } 

            _connectionPointType = connectionPointType; 
        }

        public ConnectionProviderAttribute(string displayName, string id, Type connectionPointType) : this(displayName, connectionPointType) {
            if (String.IsNullOrEmpty(id)) { 
                throw new ArgumentNullException("id");
            } 
 
            _id = id;
        } 

        public bool AllowsMultipleConnections {
            get {
                return _allowsMultipleConnections; 
            }
            set { 
                _allowsMultipleConnections = value; 
            }
        } 

        public string ID {
            get {
                return (_id != null) ? _id : String.Empty; 
            }
        } 
 
        public virtual string DisplayName {
            get { 
                return DisplayNameValue;
            }
        }
 
        protected string DisplayNameValue {
            get { 
                return _displayName; 
            }
            set { 
                _displayName = value;
            }
        }
 
        public Type ConnectionPointType {
            get { 
                if (WebPartUtil.IsConnectionPointTypeValid(_connectionPointType, /*isConsumer*/ false)) { 
                    return _connectionPointType;
                } 
                else {
                    throw new InvalidOperationException(SR.GetString(
                        SR.ConnectionProviderAttribute_InvalidConnectionPointType, _connectionPointType.Name));
                } 
            }
        } 
    } 
}

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