How to access a property by its name

[Rainer Queck]

Hi NG,

how can I read/write a objects property, by just knowing ist Name as a
string?
Is there something like : myObject.GetPropertyByName("aName");

Thanks for help

 

[Peter Bradley]

Nope. You just do:

myObject.myProperty = <something>;

or:

something = myObject.myProperty;

Try reading:

http://www.c-sharpcorner.com/UploadFile/rajeshvs/PropertiesInCS11122005001040AM/PropertiesInCS.aspx

Easy, eh?


Peter

 

[Clive Dixon]

Look at System.Type class and System.Reflection namespace:

myObject.GetType().GetProperty("aName").GetValue(myObject,null)

returns an object with the property value.

Similarly

myObject.GetType().GetProperty("aName").SetValue(myObject,value,null)

 

[Tom Porterfield]

Hi NG,

how can I read/write a objects property, by just knowing ist Name as a
string?
Is there something like : myObject.GetPropertyByName("aName");

You need to use reflection for this. Ex:

Type t = myObject.GetType();
System.Reflection.PropertyInfo pi = t.GetProperty("aName");
string name = pi.GetValue(myObject, null) as string;

 

[Rainer Queck]

Hi Peter,

Easy, eh?

Not that easy ;-)

For your understanding:
I have a "Class1" , that needs to access "some" property of "Class2" , but
on instantiation, it does not know which property that will be!

Some when later the owner of "Class1" tells the class by calling a method
like "Class1.ReadOtherClassProperty("<a property name>");
So now I need to know, how Class1 can read a Property from Class2 by only
knowing its "sting" name?

Rainer

 

[Rainer Queck]

Hi Clive,

myObject.GetType().GetProperty("aName").GetValue(myObject,null)

That was exactly, I was looking for

Thanks!
Rainer

 

[Rainer Queck]

Hi Tom,

You need to use reflection for this. Ex:

Type t = myObject.GetType();
System.Reflection.PropertyInfo pi = t.GetProperty("aName");
string name = pi.GetValue(myObject, null) as string;

Yes, like Clives hint.
Thanks for answering.

Rainer