Getting all properties of an object

Question

Hi friends Getting straight to the question.... I understand that I can access property like objA.Prop1.....through reflection as Type myType = objA.GetType(); PropertyInfo myProperty = myType.GetProperty( Prop1 ); But suppose I want to access property like objA.Prop1.Prop2 ...then how to retrive that value and also how to set that using reflection. Thanks !!

Alan · Answer

This might be closer to what you're looking for: using System; using System.Reflection; class Test { static void Main() { MyClass objA = new MyClass(); ShowPropertyValue(objA Prop1 Prop3 42); Console.WriteLine(); ShowPropertyValue(objA Prop2 Prop4 Goodbye); Console.ReadLine(); } static void ShowPropertyValue(object objT string prop1 string prop2 object newValue) { Type myType = objT.GetType(); //gets runtime type Console.WriteLine(objT is of type {0} myType); BindingFlags bf = BindingFlags.Public | BindingFlags.Instance | BindingFlags.GetProperty; PropertyInfo prop1Info = myType.GetProperty(prop1 bf); if (prop1Info == null) { Console.WriteLine(There is no public instance property called {0} in the {1} type prop1 myType); return; } object result = myType.InvokeMember(prop1 bf null objT null); Type prop1Type = prop1Info.PropertyType; PropertyInfo prop2Info = prop1Type.GetProperty(prop2 bf); if (prop2Info == null) { Console.WriteLine(There is no public instance property called {0} in the {1} type prop2 prop1Type); return; } object result2 = prop1Type.InvokeMember(prop2 bf null result null); Console.WriteLine(Value of objT.{0}.{1} is {2} prop1 prop2 result2); prop2Info.SetValue(result newValue null); result2 = prop2Info.GetValue(result null); Console.WriteLine(Value of objT.{0}.{1} is now {2} prop1 prop2 result2); } } class MyClass { YourClass yourClass = new YourClass(); HisClass hisClass = new HisClass(); public YourClass Prop1 { get { return yourClass; } set { yourClass = value; } } public HisClass Prop2 { get { return hisClass; } set { hisClass = value; } } } class YourClass { int myInt = 3; // default value public int Prop3 { get { return myInt; } set { myInt = value; } } } class HisClass { string myString = Hello; // default value public string Prop4 { get { return myString; } set { myString = value; } } }

Yash · Answer

That was really good !! But the actual issue is I dont Know about type of the object..ie it could be objAobjB means can be of any class.Lets suppose I have 3 classes ABC. Now I will know about the type of class only at run time..which i supposed in my original query as of class A.Then writing code like int value = (int)prop2Info.GetValue( objA.Prop1  null);......wud not be possible as I cannot dynamically write objA.Prop1 Since during design time I wud be having only object of type Object as Object objT = new object() and not MyClass objA = new MyClass(); Hope I made you understand my problem.

Alan · Answer

Here's a quick example of how you can do this: using System; using System.Reflection; class Test { static void Main() { MyClass objA = new MyClass(); Type myType = objA.GetType(); PropertyInfo prop1Info = myType.GetProperty(Prop1); Type prop1Type = prop1Info.PropertyType; PropertyInfo prop2Info = prop1Type.GetProperty(Prop2); int value = (int)prop2Info.GetValue(objA.Prop1 null); Console.WriteLine(Value of Prop2 is {0} value); prop2Info.SetValue(objA.Prop1 42 null); value = (int)prop2Info.GetValue(objA.Prop1 null); Console.WriteLine(Value of Prop2 is now {0} value); Console.ReadLine(); } } class MyClass { YourClass yourClass = new YourClass(); public YourClass Prop1 { get { return yourClass; } set { yourClass = value; } } } class YourClass { int myInt = 3; // default value public int Prop2 { get { return myInt; } set { myInt = value; } } }