PixelFormatConverter.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 / wpf / src / Core / CSharp / System / Windows / Media / PixelFormatConverter.cs / 1305600 / PixelFormatConverter.cs
                        

                        
                            //------------------------------------------------------------------------------ 
//  Microsoft Avalon
//  Copyright (c) Microsoft Corporation, 2001
//
//  File: PixelFormatConverter.cs 
//
//----------------------------------------------------------------------------- 
 
using System;
using System.ComponentModel; 
using System.ComponentModel.Design.Serialization;
using System.Reflection;
using MS.Internal;
using System.Text; 
using System.Collections;
using System.Globalization; 
using System.Windows; 
using System.Windows.Media;
using System.Runtime.InteropServices; 
using System.Diagnostics;
using System.Security;

using SR=MS.Internal.PresentationCore.SR; 
using SRID=MS.Internal.PresentationCore.SRID;
 
namespace System.Windows.Media 
{
    #region PixelFormatConverter 
    //-----------------------------------------------------------------------------
    // PixelFormatConverter
    //-----------------------------------------------------------------------------
    ///  
    /// PixelFormatConverter
    ///  
    public sealed class PixelFormatConverter : TypeConverter 
    {
        ///  
        /// CanConvertFrom - Returns whether or not this class can convert from a given type
        /// 
        public override bool CanConvertFrom(ITypeDescriptorContext td, Type t)
        { 
            if (t == typeof(string))
            { 
                return true; 
            }
            else 
            {
                return false;
            }
        } 

        ///  
        /// TypeConverter method override. 
        /// 
        /// ITypeDescriptorContext 
        /// Type to convert to
        /// true if conversion is possible
        public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
        { 
            if (destinationType == typeof(InstanceDescriptor) ||
                destinationType == typeof(string)) 
            { 
                return true;
            } 

            return base.CanConvertTo(context, destinationType);
        }
 
        /// 
        /// test 
        ///  
        public new object ConvertFromString(String value)
        { 
            if ( null == value)
            {
                return null;
            } 

            return new PixelFormat (value); 
        } 

        ///  
        /// test
        /// 
        public override object ConvertFrom(ITypeDescriptorContext td, System.Globalization.CultureInfo ci, object o)
        { 
            if ( null == o)
            { 
                return null; 
            }
 
            return new PixelFormat(o as string);
        }

        ///  
        /// TypeConverter method implementation.
        ///  
        /// ITypeDescriptorContext 
        /// current culture (see CLR specs)
        /// value to convert from 
        /// Type to convert to
        /// converted value
        ///
        ///     Critical: calls InstanceDescriptor ctor which LinkDemands 
        ///     PublicOK: can only make an InstanceDescriptor for PixelFormat, not an arbitrary class
        /// 
        [SecurityCritical] 
        public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
        { 
            if (null == destinationType)
            {
                throw new ArgumentNullException("destinationType");
            } 

            if (null == value) 
            { 
                throw new ArgumentNullException("value");
            } 

            if (!(value is PixelFormat))
            {
                throw new ArgumentException(SR.Get(SRID.General_Expected_Type,"PixelFormat")); 
            }
 
            if (destinationType == typeof(InstanceDescriptor)) 
            {
                ConstructorInfo ci = typeof(PixelFormat).GetConstructor(new Type[]{typeof(string)}); 
                PixelFormat p = (PixelFormat)value;
                return new InstanceDescriptor(ci, new object[]{p.ToString()});
            }
            else if (destinationType == typeof(string)) 
            {
                PixelFormat p = (PixelFormat)value; 
                return p.ToString (); 
            }
 
            return base.ConvertTo(context, culture, value, destinationType);
        }
    }
#endregion // PixelFormatConverter 
}

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

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