Is it possible to set private property via reflection?

user_91729 0
Viewed 78225

Can I set a private property via reflection?

public abstract class Entity
{
    private int _id;
    private DateTime? _createdOn;
    public virtual T Id
    {
        get { return _id; }
        private set { ChangePropertyAndNotify(ref _id, value, x => Id); }
    }
    public virtual DateTime? CreatedOn
    {
        get { return _createdOn; }
        private set { ChangePropertyAndNotify(ref _createdOn, value, x => CreatedOn); }
    }
}

I've tried the following and it does not work, where t represents a type of Entity:

var t = typeof(Entity);
var mi = t.GetMethod("set_CreatedOn", BindingFlags.Instance | BindingFlags.NonPublic);

I guess I can do this but I can't work it out.

private properties reflection .net
6 Answers

You can access private setter from derived type via code

public static void SetProperty(object instance, string propertyName, object newValue)
{
    Type type = instance.GetType();

    PropertyInfo prop = type.BaseType.GetProperty(propertyName);

    prop.SetValue(instance, newValue, null);
}
user_2127460

Use

            UtilTest.SetProperty(data.Process, "CurrentStepId", (int)WorkFlowStep.HappyClaimsIsContract);

Definition

public class UtilTest
{
public static void SetProperty( object instance, string propertyName, object newValue)
    {
        try
        {
            Type type = instance.GetType();

            PropertyInfo prop = type.GetProperty(propertyName);
            if (prop.PropertyType == typeof(decimal))
            {
                prop.SetValue(instance, Convert.ToDecimal(newValue), null);

            }
            else
            {
                prop.SetValue(instance, newValue, null);
            }
        }
        catch
        {
        }

    }

}

user_16615620
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