public static bool AreEqual(object x, object y, bool caseSensitive)
{
if (x == null && y == null)
{
return(true);
}
else if ((x == null && y != null) || (x != null && y == null))
{
return(false);
}
StringComparer comparer;
StringComparison comparison;
if (caseSensitive)
{
comparison = StringComparison.Ordinal;
comparer = StringComparer.Ordinal;
}
else
{
comparison = StringComparison.OrdinalIgnoreCase;
comparer = StringComparer.OrdinalIgnoreCase;
}
Type xType = x.GetType();
Type yType = y.GetType();
PropertyInfo[] xProps = xType.GetProperties(PropertyFlags);
PropertyInfo[] yProps = yType.GetProperties(PropertyFlags);
Dictionary <string, PropertyInfo> xPropMap = new Dictionary <string, PropertyInfo>(comparer);
Dictionary <string, PropertyInfo> yPropMap = new Dictionary <string, PropertyInfo>(comparer);
xProps.ForEach(pi => xPropMap.Add(pi.Name, pi));
yProps.ForEach(pi => yPropMap.Add(pi.Name, pi));
var comparableProperties = xProps.Select(p => p.Name).Intersect(yProps.Select(p => p.Name), comparer);
List <Tuple <PropertyInfo, PropertyInfo> > propTuples = new List <Tuple <PropertyInfo, PropertyInfo> >();
foreach (string propName in comparableProperties)
{
PropertyInfo xPropertyInfo = xProps.Single(p => String.Equals(p.Name, propName, comparison));
PropertyInfo yPropertyInfo = yProps.Single(p => String.Equals(p.Name, propName, comparison));
Tuple <PropertyInfo, PropertyInfo> tuple = new Tuple <PropertyInfo, PropertyInfo>(xPropertyInfo, yPropertyInfo);
propTuples.Add(tuple);
}
foreach (Tuple <PropertyInfo, PropertyInfo> propTuple in propTuples)
{
PropertyComparisonResult compareResult = CompareProperty(propTuple.Item1, x, propTuple.Item2, y, caseSensitive);
if (!compareResult.Result)
{
return(false);
}
}
return(true);
}
internal static PropertyComparisonResult CompareProperty(PropertyInfo xProp, object x, PropertyInfo yProp, object y, bool caseSensitive)
{
object xValue = xProp.GetValue(x, null);
object yValue = yProp.GetValue(y, null);
PropertyComparisonResult result = new PropertyComparisonResult(xValue, xProp, yValue, yProp);
if (xProp.PropertyType.IsValueType && yProp.PropertyType.IsValueType)
{
if (xProp.PropertyType == typeof(DateTime) && yProp.PropertyType == typeof(DateTime))
{
DateTime dt1 = (DateTime)xValue;
DateTime dt2 = (DateTime)yValue;
TimeSpan diff = dt1 - dt2;
if (diff < TimeSpan.Zero)
{
diff = -diff;
}
if (diff.Ticks > TimeSpan.TicksPerSecond)
{
result.Result = false;
}
else
{
result.Result = true;
}
}
else
{
result.Result = ValueType.Equals(xValue, yValue);
}
}
else if (xProp.PropertyType == typeof(string) && yProp.PropertyType == typeof(string))
{
result.Result = String.Equals((string)xValue, (string)yValue);
}
else if (xProp.PropertyType.IsEnumberable() && yProp.PropertyType.IsEnumberable())
{
result.Result = ValueComparer.AreEnumerableEqual(xValue, yValue, caseSensitive, false);
}
else if (xProp.PropertyType.IsGenericType && yProp.PropertyType.IsGenericType)
{
// Non-enumerable generics ignored
result.Result = true;
}
else
{
result.Result = ValueComparer.AreEqual(xValue, yValue, caseSensitive);
}
return(result);
}
private bool CompareProperties()
{
if (this.AreSameType)
{
Type type = this.x.GetType();
PropertyInfo[] props = type.GetProperties(PropertyFlags);
bool flag = true;
foreach (var pi in props)
{
Type propertyType = pi.PropertyType;
PropertyComparisonResult propCompareResult = null;
if (propertyType.IsValueType)
{
propCompareResult = ValueComparer.CompareProperty(pi, x, pi, y, true);
}
else if (propertyType == typeof(string))
{
propCompareResult = ValueComparer.CompareProperty(pi, x, pi, y, true);
}
else if (propertyType.IsGenericType)
{
propCompareResult = ValueComparer.CompareProperty(pi, x, pi, y, true);
}
else
{
propCompareResult = ValueComparer.CompareProperty(pi, x, pi, y, true);
}
if (propCompareResult != null)
{
this._results.Add(propCompareResult);
if (!propCompareResult.Result)
{
flag = false;
}
}
}
return(flag);
}
else
{
throw new NotSupportedException();
}
}