how to get a property of instant?

Question

I have class :

public class MyClass1{
public string Val{get;set;}
public int Id{get;set;}
}
MyClass1 mc=new MyClass1{Id=1};

how to get the value of Id of mc ?

I have a string string col="Id"

and I want get the value of mc the property is in col

in javascript I can do :

var val=mc[col];

in c# can I get it?

Answer 1

Try one of solutions:

PropertyInfo p = typeof( MyClass1 ).GetProperty( col );
object result = p.GetValue( mc );

The result can be casted to int.

Or:

switch( col )
{
case "Id":
    int id = mc.Id;
    // . . .
    break;
case "Val":
    string val = mc.Val;
    // . . .
    break;
}

Answer 2

To get a property of an instance in C#, you need to access the property using the dot (.) notation. Here's an example:

csharpCopy code
// Create an instance of a class
var myInstance = new MyClass();

// Access the property of the instance
var propertyValue = myInstance.PropertyName;

In the above code, MyClass is a class that has a property named PropertyName. By using the dot notation (myInstance.PropertyName), you can access the value of that property.

Make sure to replace MyClass with the actual name of your class and PropertyName with the name of the property you want to access.

Regards

David johnson