/// <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 Dictionary to ignore from the comparison where keys is type and vae is list of property names </param>
/// <returns><c>true</c> if all property values are equal, otherwise <c>false</c>.</returns>
public static bool AreObjectsEqual(object objectA, object objectB, IgnoreList ignoreList = null)
{
bool result;
if (objectA != null && objectB != null)
{
Type objectType;
objectType = objectA.GetType();
result = true; // assume by default they are equal
foreach (PropertyInfo propertyInfo in objectType.GetProperties(BindingFlags.Public | BindingFlags.Instance).Where(p => p.CanRead && !IsPresentInIgnoreList(ignoreList, objectType, p)))
{
object valueA;
object valueB;
ParameterInfo[] par = propertyInfo.GetIndexParameters();
if (par.Length > 0)
{
//we shouldn't compare indexed properties
continue;
}
valueA = propertyInfo.GetValue(objectA, null);
valueB = propertyInfo.GetValue(objectB, null);
// if it is a primative type, value type or implements IComparable, just directly try and compare the value
if (CanDirectlyCompare(propertyInfo.PropertyType))
{
if (!AreValuesEqual(valueA, valueB))
{
Console.WriteLine("Mismatch with property '{0}.{1}' found. Expected: {2}, was {3}", objectType.FullName, propertyInfo.Name, valueA, valueB);
result = false;
}
}
// if it implements IEnumerable, then scan any items
else if (typeof(IEnumerable).IsAssignableFrom(propertyInfo.PropertyType))
{
// null check
if (valueA == null && valueB != null || valueA != null && valueB == null)
{
Console.WriteLine("Mismatch with property '{0}.{1}' found. Expected: {2}, was {3}", objectType.FullName, propertyInfo.Name, valueA, valueB);
result = false;
}
else if (valueA != null && valueB != null)
{
var valueAcollection = ((IEnumerable)valueA).Cast <object>();
var valueBcollection = ((IEnumerable)valueB).Cast <object>();
// and if they do, compare each item... this assumes both collections have the same order
valueAcollection.ZipLongest(valueBcollection, (first, second) =>
{
var collectionItemType = first.GetType();
if (CanDirectlyCompare(collectionItemType))
{
if (!AreValuesEqual(first, second))
{
Console.WriteLine("Item {0} in property collection '{1}.{2}' does not match.", 0, objectType.FullName, propertyInfo.Name);
result = false;
}
}
else if (!AreObjectsEqual(first, second, ignoreList))
{
Console.WriteLine("Item {0} in property collection '{1}.{2}' does not match.", 0, objectType.FullName, propertyInfo.Name);
result = false;
}
return(true);
});
//// check the counts to ensure they match
//if (collectionItemsCount1 != collectionItemsCount2)
//{
// Console.WriteLine("Collection counts for property '{0}.{1}' do not match.", objectType.FullName, propertyInfo.Name);
// result = false;
//}
}
}
else if (propertyInfo.PropertyType.IsClass)
{
if (!AreObjectsEqual(propertyInfo.GetValue(objectA, null), propertyInfo.GetValue(objectB, null), ignoreList))
{
Console.WriteLine("Mismatch with property '{0}.{1}' found. Expected: {2}, was {3}", objectType.FullName, propertyInfo.Name, valueA, valueB);
result = false;
}
}
else
{
Console.WriteLine("Cannot compare property '{0}.{1}'.", objectType.FullName, propertyInfo.Name);
result = false;
}
}
}
else
{
result = object.Equals(objectA, objectB);
}
return(result);
}
