ScrollEventArgs.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Framework / System / Windows / Controls / Primitives / ScrollEventArgs.cs / 1 / ScrollEventArgs.cs
                        

                        
                            using System; 
using System.Windows.Controls;
using System.Windows;

namespace System.Windows.Controls.Primitives 
{
    ///  
    /// Occurs when the Value property has changed, either by a Scroll event or programmatically. 
    /// 
    ///  
    /// 
    public class ScrollEventArgs: RoutedEventArgs
    {
        ///  
        /// This is an instance constructor for the ScrollEventArgs class.  It
        /// is constructed with a reference to the event being raised. 
        ///  
        /// Nothing.
        public ScrollEventArgs(ScrollEventType scrollEventType, double newValue) : base() 
        {
            _scrollEventType = scrollEventType;
            _newValue = newValue;
            RoutedEvent =ScrollBar.ScrollEvent; 
        }
 
        ///  
        /// Read-only access to the type of scroll event.
        ///  
        public ScrollEventType ScrollEventType
        {
            get { return _scrollEventType; }
        } 

        ///  
        /// Read-only access to new value of ScrollBar. 
        /// 
        public double NewValue 
        {
            get { return _newValue; }
        }
 
 	
        ///  
        /// This method is used to perform the proper type casting in order to 
        /// call the type-safe ScrollEventHandler delegate for the ScrollEvent event.
        ///  
        /// The handler to invoke.
        /// The current object along the event's route.
        /// Nothing.
        ///  
        /// 
        protected override void InvokeEventHandler(Delegate genericHandler, object genericTarget) 
        { 
            ScrollEventHandler  handler = (ScrollEventHandler)genericHandler;
            handler(genericTarget, this); 
        }

        private ScrollEventType _scrollEventType;
        private double _newValue; 
    }
 
    ///  
    ///     This delegate must used by handlers of the Scroll event.
    ///  
    /// The current element along the event's route.
    /// The event arguments containing additional information about the event.
    /// Nothing.
    public delegate void ScrollEventHandler(object sender, ScrollEventArgs e); 
}
 

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

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