Get property value from string using reflection in c#

Question

I trying implement in my code this example link but in

private object GetSourceValue(string propertyName) {}

he have a switch comparing various types. I want remove this types and properties and have a only GetSourceValue does can get source of property using only a string in parameter. I want pass class and property in string e resolve the value object of property.

Its Possible?

Answer 1

 public static object GetPropValue( object src, string propName )
 {
     src.GetType( ).GetProperty( propName ).GetValue( src, null );
 }

Of course, you will want to add validation and whatnot, but that is the gist of it.

Answer 2

How about something like this:

public Object GetPropValue(String name, Object obj) {
    foreach (String part in name.Split('.')) {
        if (obj == null) { return null; }

        Type type = obj.GetType();
        PropertyInfo info = type.GetProperty(part);
        if (info == null) { return null; }

        obj = info.GetValue(obj, null);
    }
    return obj;
}

Answer 3

You never mention what object you are inspecting, and since you are rejecting ones that reference a given object, I will assume you mean a static one.

using System.Reflection;
public object GetPropValue(string prop)
{
    int splitPoint = prop.LastIndexOf('.');
    Type type = Assembly.GetEntryAssembly().GetType(prop.Substring(0, splitPoint));
    object obj = null;
    return type.GetProperty(prop.Substring(splitPoint + 1)).GetValue(obj, null);
}

Note that I marked the object that is being inspected with the local variable obj. null means static, otherwise set it to what you want. Also note that the GetEntryAssembly() is one of a few available methods to get the "running" assembly, you may want to play around with it if you are having a hard time loading the type.

Answer 4

what about using the CallByName of the visualbasic namespace? which is reflection.

using Microsoft.VisualBasic;
using Microsoft.VisualBasic.CompilerServices;

and then

Versioned.CallByName(this, "method/function/prop name", CallType.Get).ToString();

Answer 5

Dim NewHandle As YourType = CType(Microsoft.VisualBasic.CallByName(ObjectThatContainsYourVariable, "YourVariableName", CallType), YourType)