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Reflection Error

Reflection Error, Change an internal property using Reflection

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zakary

22 May, 2008 - 09:35 AM

Post #1

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I am trying to change an internal property and I am not sure what is wrong or if I am doing it correctly

this is the code for the internal property it is in a different name space and I cannot change internal to public.

csharp


namespace namespace_one
{
    class Class1 
    {
        private bool isDirty = false;

        public Class1()
        {

        }

        internal bool IsDirty
        {
            get { return isDirty; }
            set { isDirty = value; }
        }
    }
}

here is my class and code trying to change it

csharp


namespace namespace_two
{
    class Class2 
    {
		private namespace_one.Class1 class1;
        public Class2()
        {
		class1 = new namespace_one.Class1();
                SetIsDirty();
        }

        private void SetIsDirty()
        {
            System.Type type = class1.GetType();

            System.Reflection.FieldInfo feildInfo = type.GetField("IsDirty",
                System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.NonPublic |
                System.Reflection.BindingFlags.Instance);

            (feildInfo.GetValue(class1) as 
                namespace_one.Class1).IsDirty = true;//Error 'Class1' does not contain a definition for 'IsDirty'
        }
    }
}

IsDirty is not in intellisense so i know I am doing it wrong.

This post has been edited by zakary: 22 May, 2008 - 11:00 AM

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djkitt	22 May, 2008 - 10:31 AM Post #2
D.I.C Head Joined: 22 May, 2008 Posts: 128 Thanked 13 times My Contributions	You just need to and an underscore after your boolean variable... private bool isDirty = false; should be private bool isDirty_ = false;
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zakary	22 May, 2008 - 11:01 AM Post #3
D.I.C Regular Joined: 15 Feb, 2005 Posts: 401 Thanked 6 times Dream Kudos: 175 My Contributions	that is not what is causing //Error 'Class1' does not contain a definition for 'IsDirty' but you are correct with that error. I had already fix that. Thanks
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zakary

22 May, 2008 - 11:52 AM

Post #4

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Joined: 15 Feb, 2005
Posts: 401

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got it this will set the internal property value

csharp



namespace namespace_two
{
    class Class2 
    {
		private namespace_one.Class1 class1;
        public Class2()
        {
			class1 = new namespace_one.Class1();
        }

        private void SetIsDirty()
        {              
            System.Type type = class1.GetType();

            System.Reflection.FieldInfo feildInfo = type.GetField("isDirty",
                System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.NonPublic |
                System.Reflection.BindingFlags.Instance);

            fieldInfo.SetValue(class1, true);
        }
    }
}

This post has been edited by zakary: 22 May, 2008 - 11:53 AM

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djkitt	22 May, 2008 - 12:24 PM Post #5
D.I.C Head Joined: 22 May, 2008 Posts: 128 Thanked 13 times My Contributions	Hey again, It looks like you are trying to use FieldInfo on the Property IsDirty. This returns null as IsDirty is not a field. You can set the field isDirty_ directly. CODE System.Reflection.FieldInfo feildInfo = type.GetField("isDirty_", System.Reflection.BindingFlags.Public \| System.Reflection.BindingFlags.NonPublic \| System.Reflection.BindingFlags.Instance); feildInfo.SetValue(class1,true); Looks like you already got it. Sorry.
	This Post Was Helpful! ^New!