मैं इस का उपयोग करके इसे कर रहा हूँ:
public bool AreEqual(object leftValue, object rightValue)
{
var left = JsonConvert.SerializeObject(leftValue);
var right = JsonConvert.SerializeObject(rightValue);
return left == right;
}
public Difference<T> GetDifference<T>(T newItem, T oldItem)
{
var properties = typeof(T).GetProperties();
var propertyValues = properties
.Select(p => new {
p.Name,
LeftValue = p.GetValue(newItem),
RightValue = p.GetValue(oldItem)
});
var differences = propertyValues
.Where(p => !AreEqual(p.LeftValue, p.RightValue))
.Select(p => p.Name)
.ToList();
return new Difference<T>
{
ChangedProperties = differences,
NewItem = newItem,
OldItem = oldItem
};
}
AreEqual सिर्फ Json.Net का उपयोग कर दो वस्तुओं की धारावाहिक संस्करणों की तुलना, यह रहता है:
//This structure represents the comparison of one member of an object to the corresponding member of another object.
public struct MemberComparison
{
public static PropertyInfo NullProperty = null; //used for ROOT properties - i dont know their name only that they are changed
public readonly MemberInfo Member; //Which member this Comparison compares
public readonly object Value1, Value2;//The values of each object's respective member
public MemberComparison(PropertyInfo member, object value1, object value2)
{
Member = member;
Value1 = value1;
Value2 = value2;
}
public override string ToString()
{
return Member.name+ ": " + Value1.ToString() + (Value1.Equals(Value2) ? " == " : " != ") + Value2.ToString();
}
}
//This method can be used to get a list of MemberComparison values that represent the fields and/or properties that differ between the two objects.
public static List<MemberComparison> ReflectiveCompare<T>(T x, T y)
{
List<MemberComparison> list = new List<MemberComparison>();//The list to be returned
if (x.GetType().IsArray)
{
Array xArray = x as Array;
Array yArray = y as Array;
if (xArray.Length != yArray.Length)
list.Add(new MemberComparison(MemberComparison.NullProperty, "array", "array"));
else
{
for (int i = 0; i < xArray.Length; i++)
{
var compare = ReflectiveCompare(xArray.GetValue(i), yArray.GetValue(i));
if (compare.Count > 0)
list.AddRange(compare);
}
}
}
else
{
foreach (PropertyInfo m in x.GetType().GetProperties())
//Only look at fields and properties.
//This could be changed to include methods, but you'd have to get values to pass to the methods you want to compare
if (!m.PropertyType.IsArray && (m.PropertyType == typeof(String) || m.PropertyType == typeof(double) || m.PropertyType == typeof(int) || m.PropertyType == typeof(uint) || m.PropertyType == typeof(float)))
{
var xValue = m.GetValue(x, null);
var yValue = m.GetValue(y, null);
if (!object.Equals(yValue, xValue))//Add a new comparison to the list if the value of the member defined on 'x' isn't equal to the value of the member defined on 'y'.
list.Add(new MemberComparison(m, yValue, xValue));
}
else if (m.PropertyType.IsArray)
{
Array xArray = m.GetValue(x, null) as Array;
Array yArray = m.GetValue(y, null) as Array;
if (xArray.Length != yArray.Length)
list.Add(new MemberComparison(m, "array", "array"));
else
{
for (int i = 0; i < xArray.Length; i++)
{
var compare = ReflectiveCompare(xArray.GetValue(i), yArray.GetValue(i));
if (compare.Count > 0)
list.AddRange(compare);
}
}
}
else if (m.PropertyType.IsClass)
{
var xValue = m.GetValue(x, null);
var yValue = m.GetValue(y, null);
if ((xValue == null || yValue == null) && !(yValue == null && xValue == null))
list.Add(new MemberComparison(m, xValue, yValue));
else if (!(xValue == null || yValue == null))
{
var compare = ReflectiveCompare(m.GetValue(x, null), m.GetValue(y, null));
if (compare.Count > 0)
list.AddRange(compare);
}
}
}
return list;
}
स्रोत
2013-06-17 21:11:33
सूचियों के लिए ऐसा करना एक * वास्तविक * दर्द है (माना जाता है कि आपको जोड़ने/निकालने/पुन: आदेश/आदि को संभालने की आवश्यकता है); हालांकि, प्रति-ऑब्जेक्ट आधार पर, कृपया देखें: http://stackoverflow.com/questions/3060382/comparing-2-objects-and-retrieve-a-list-of-fields-with- अलग-अलग - जो करता है वास्तव में यह –
@MarcGravell: मैंने इसे आजमाया और यह उन गुणों को लौटाता है जो डेल्टा के रूप में सूचीबद्ध हैं। फिर भी धन्यवाद। –
क्या आप उन संपत्तियों की परवाह करते हैं जो दोनों वस्तुओं में नहीं हैं, आईई। मैट्रिकुलेशन होना चाहिए जब आप किसी व्यक्ति से किसी छात्र की तुलना करते हैं तो संख्या को एक बदलाव माना जाना चाहिए? –