File size: 2,430 Bytes
8c763fb | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | // Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Text;
using System.Windows;
using System.Windows.Data;
namespace Microsoft.Management.UI.Internal
{
/// <summary>
/// Takes two objects and determines whether they are equal.
/// </summary>
[SuppressMessage("Microsoft.MSInternal", "CA903:InternalNamespaceShouldNotContainPublicTypes")]
public class IsEqualConverter : IMultiValueConverter
{
/// <summary>
/// Takes two items and determines whether they are equal.
/// </summary>
/// <param name="values">
/// Two objects of any type.
/// </param>
/// <param name="targetType">The parameter is not used.</param>
/// <param name="parameter">The parameter is not used.</param>
/// <param name="culture">The parameter is not used.</param>
/// <returns>
/// True if-and-only-if the two objects are equal per Object.Equals().
/// Null is equal only to null.
/// </returns>
public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
ArgumentNullException.ThrowIfNull(values);
if (values.Length != 2)
{
throw new ArgumentException("Two values expected", "values");
}
object item1 = values[0];
object item2 = values[1];
if (item1 == null)
{
return item2 == null;
}
if (item2 == null)
{
return false;
}
bool equal = item1.Equals(item2);
return equal;
}
/// <summary>
/// This method is not used.
/// </summary>
/// <param name="value">The parameter is not used.</param>
/// <param name="targetTypes">The parameter is not used.</param>
/// <param name="parameter">The parameter is not used.</param>
/// <param name="culture">The parameter is not used.</param>
/// <returns>The parameter is not used.</returns>
public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
}
}
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