我想比较不同版本的两个对象,并在UI中显示它们的差异。
首先,我调用一个方法来了解两个对象之间是否存在任何差异
方法是:
public bool AreEqual(object object1,object object2, Type comparisionType)
如果上面的方法返回true,我调用GetDifferences
方法来获得差异:
public ObjectDifference[] GetObjectDifferences(object object1, object object2, Type comparisionType)
{
ArrayList memberList = new ArrayList();
ArrayList differences = new ArrayList();
memberList.AddRange(comparisionType.GetProperties());
memberList.AddRange(comparisionType.GetFields());
for (int loopCount = 0; loopCount < memberList.Count; loopCount++)
{
object objVal1 = null;
object objVal2 = null;
MemberInfo member = ((MemberInfo)memberList[loopCount]);
switch (((MemberInfo)memberList[loopCount]).MemberType)
{
case MemberTypes.Field:
objVal1 = object1 != null ? ((FieldInfo)memberList[loopCount]).GetValue(object1) : null;
objVal2 = object2 != null ? ((FieldInfo)memberList[loopCount]).GetValue(object2) : null;
break;
case MemberTypes.Property:
objVal1 = object1 != null ? ((PropertyInfo)memberList[loopCount]).GetValue(object1, null) : null;
objVal2 = object2 != null ? ((PropertyInfo)memberList[loopCount]).GetValue(object2, null) : null;
break;
default:
break;
}
if (AreValuesDifferentForNull(objVal1, objVal2))
{
ObjectDifference obj = new ObjectDifference(objVal1, objVal2, member, member.Name);
differences.Add(obj);
}
else if (AreValuesDifferentForPrimitives(objVal1, objVal2))
{
ObjectDifference obj = new ObjectDifference(objVal1, objVal2, member, member.Name);
differences.Add(obj);
}
else if (AreValuesDifferentForList(objVal1, objVal2))
{
ObjectDifference[] listDifference = GetListDifferences((ICollection)objVal1, (ICollection)objVal2, member);
differences.AddRange(listDifference);
}
else if ((!AreValuesEqual(objVal1, objVal2)) && (objVal1 != null || objVal2 != null))
{
ObjectDifference obj = new ObjectDifference(objVal1, objVal2, member, member.Name);
differences.Add(obj);
}
}
return (ObjectDifference[])differences.ToArray(typeof(ObjectDifference));
}
public class ObjectDifference
{
private readonly object objectValue1;
private readonly object objectValue2;
private readonly System.Reflection.MemberInfo member;
private readonly string description;
public object ObjectValue1
{
get { return objectValue1; }
}
public object ObjectValue2
{
get { return objectValue2; }
}
public System.Reflection.MemberInfo Member
{
get { return member; }
}
public string Description
{
get { return description; }
}
public ObjectDifference(object objVal1, object objVal2, System.Reflection.MemberInfo member, string description)
{
this.objectValue1 = objVal1;
this.objectValue2 = objVal2;
this.member = member;
this.description = description;
}
}
对于每个差异,我创建一个ObjectDifference类型的对象并将其添加到数组中。突出显示的部分是我被卡住的部分!如果对象包含另一个复杂对象,我的程序确实给了我差异,但我不知道它属于哪种类型
例如,我有两个Name
类型的对象class Name
{
string firstName, LastName;
List phNumber;
}
class PhoneNumber
{
string officeNo, MobileNo, HomeNo;
}
在比较两个对象时,我得到的输出是简单的 -
firstname
- John Mary LastName
- 库珀洛尔officeNo
- 22222 44444 MobileNo
- 989898 089089 HomeNo
- 4242 43535 officeNo
类型为PhoneNumber
的层次结构丢失,这对我来说非常重要。
在创建差异时,我应该如何维护这种类型的树?希望我能够理解我的问题。
答案 0 :(得分:6)
您要做的事情和展示本身就很复杂。我以前做过这个(基于diffgram / delta的进程),甚至尝试以简单的和友好的方式显示嵌套的更改是很棘手的。
如果它适合您的用户群,一个选项可能只是将两个图表序列化为xml,并使用类似xml diff的内容。