//https://stackoverflow.com/questions/42809686/c-sharp-compare-two-objects-for-properties-with-different-values
public static object Diff <T>(T Original, T compare)
{
if (Original != null && compare != null)
{
var type = typeof(T);
var allProperties = type.GetProperties(BindingFlags.Public | BindingFlags.Instance);
var allSimpleProperties = allProperties.Where(pi => pi.PropertyType.IsSimpleType());
var unequalProperties = (
from pi in allSimpleProperties
let AValue = type.GetProperty(pi.Name).GetValue(Original, null)
let BValue = type.GetProperty(pi.Name).GetValue(compare, null)
where AValue != BValue && (AValue == null || !AValue.Equals(BValue))
select new DiffProperty
{
Name = pi.Name,
Origin = AValue,
Changed = BValue
}).ToList();
return(unequalProperties);
}
else
{
throw new ArgumentNullException();
}
}
public static List <string> GetChangedProperties <T>(object A, object B)
{
if (A != null && B != null)
{
var type = typeof(T);
var allProperties = type.GetProperties(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance | BindingFlags.DeclaredOnly).Where(x => !Attribute.IsDefined(x, typeof(SkipCompareAttribute)));
var allSimpleProperties = allProperties.Where(pi => pi.PropertyType.IsSimpleType());
var unequalProperties =
from pi in allSimpleProperties
let AValue = type.GetProperty(pi.Name).GetValue(A, null)
let BValue = type.GetProperty(pi.Name).GetValue(B, null)
where AValue != BValue && (AValue == null || !AValue.Equals(BValue))
select pi.Name;
return(unequalProperties.ToList());
}
else if (A != null && B == null)
{
return(new List <string>()
{
""
});
}
else
{
throw new ArgumentNullException("You need to provide 2 non-null objects");
}
}
public List <string> GetChangedProperties <T>(object a, object b)
{
if (a == null || b == null)
{
throw new ArgumentNullException("You need to provide 2 non-null objects");
}
var type = typeof(T);
var allProperties = type.GetProperties(BindingFlags.Public | BindingFlags.Instance);
var allSimpleProperties = allProperties.Where(pi => pi.CanWrite && IsSimpleType(pi.PropertyType));
var unequalProperties =
from pi in allSimpleProperties
let AValue = type.GetProperty(pi.Name).GetValue(a, null)
let BValue = type.GetProperty(pi.Name).GetValue(b, null)
where AValue != BValue && (AValue == null || !AValue.Equals(BValue))
select pi.Name;
return(unequalProperties.ToList());
}
