/// <summary>
/// Compares the properties of two objects of the same type and returns if all properties are equal.
/// </summary>
/// <param name="objectA">The first object to compare.</param>
/// <param name="objectB">The second object to compre.</param>
/// <param name="ignoreList">A list of property names to ignore from the comparison.</param>
/// <returns><c>true</c> if all property values are equal, otherwise <c>false</c>.</returns>
public static bool AreObjectsEqual(this object objectA, object objectB, params string[] ignoreList)
{
bool result;
try
{
if (objectA != null && objectB != null)
{
Type objectType;
objectType = objectA.GetType();
if (CanDirectlyCompare(objectType))
{
return(objectA.Equals(objectB));
}
result = true; // assume by default they are equal
foreach (PropertyInfo propertyInfo in objectType.GetProperties(BindingFlags.Public | BindingFlags.Instance).Where(p => p.CanRead && !ignoreList.Contains(p.Name)))
{
object valueA;
object valueB;
try
{
valueA = propertyInfo.GetValue(objectA, null);
valueB = propertyInfo.GetValue(objectB, null);
// if it is a primitive type, value type or implements IComparable, just directly try and compare the value
if (CanDirectlyCompare(propertyInfo.PropertyType))
{
if (!AreValuesEqual(valueA, valueB))
{
Console.WriteLine(LocalizedResources.Instance().MismatchWithPropertyFound, objectType.FullName, propertyInfo.Name);
result = false;
}
}
// if it implements IEnumerable, then scan any items
else if (typeof(IEnumerable).IsAssignableFrom(propertyInfo.PropertyType))
{
IEnumerable <object> collectionItems1;
IEnumerable <object> collectionItems2;
int collectionItemsCount1;
int collectionItemsCount2;
// null check
if (valueA == null && valueB != null || valueA != null && valueB == null)
{
Console.WriteLine(LocalizedResources.Instance().MismatchWithPropertyFound, objectType.FullName, propertyInfo.Name);
result = false;
}
else if (valueA != null && valueB != null)
{
collectionItems1 = ((IEnumerable)valueA).Cast <object>();
collectionItems2 = ((IEnumerable)valueB).Cast <object>();
collectionItemsCount1 = collectionItems1.Count();
collectionItemsCount2 = collectionItems2.Count();
// check the counts to ensure they match
if (collectionItemsCount1 != collectionItemsCount2)
{
Console.WriteLine(LocalizedResources.Instance().CollectionCountsForPropertyDoNotMatch, objectType.FullName, propertyInfo.Name);
result = false;
}
// and if they do, compare each item... this assumes both collections have the same order
else
{
for (int i = 0; i < collectionItemsCount1; i++)
{
object collectionItem1;
object collectionItem2;
Type collectionItemType;
collectionItem1 = collectionItems1.ElementAt(i);
collectionItem2 = collectionItems2.ElementAt(i);
collectionItemType = collectionItem1.GetType();
if (CanDirectlyCompare(collectionItemType))
{
if (!AreValuesEqual(collectionItem1, collectionItem2))
{
Console.WriteLine(LocalizedResources.Instance().ItemInPropertyCollectionDoesNotMatch, i, objectType.FullName, propertyInfo.Name);
result = false;
}
}
else if (!AreObjectsEqual(collectionItem1, collectionItem2, ignoreList))
{
Console.WriteLine(LocalizedResources.Instance().ItemInPropertyCollectionDoesNotMatch, i, objectType.FullName, propertyInfo.Name);
result = false;
}
}
}
}
}
else if (propertyInfo.PropertyType.IsClass || propertyInfo.PropertyType.IsInterface)
{
if (!AreObjectsEqual(propertyInfo.GetValue(objectA, null), propertyInfo.GetValue(objectB, null), ignoreList))
{
Console.WriteLine(LocalizedResources.Instance().MismatchWithPropertyFound, objectType.FullName, propertyInfo.Name);
result = false;
}
}
else
{
Console.WriteLine(LocalizedResources.Instance().CannotCompareProperty, objectType.FullName, propertyInfo.Name);
result = false;
}
}
catch (System.Reflection.TargetParameterCountException te)
{
continue;
}
catch (Exception ex)
{
Console.WriteLine(LocalizedResources.Instance().CannotCompareValues, ex.Message);
result = false;
}
}
}
else
{
result = object.Equals(objectA, objectB);
}
}
catch (System.Exception ex)
{
Console.WriteLine(LocalizedResources.Instance().CannotCompareValues, ex.Message);
result = false;
}
return(result);
}
