C#

shekhar258395 wrote:

how can i convert an color image in to black & white

public Image BW(Bitmap bmp) 
        { 
            for (int i = 0; i < bmp.Width; i++) 
            { 
                for (int j = 0; j < bmp.Height; j++) 
                { 
                    int hede = (bmp.GetPixel(i, j).R + bmp.GetPixel(i, j).G + bmp.GetPixel(i, j).B) / 3; 
  
                    bmp.SetPixel(i, j, Color.FromArgb(hede, hede, hede)); 
                } 
            } 
            return bmp; 
        } 

internal static class Singleton<T> where T : class
{
        private static T _instance;

        static Singleton()
        {
            Type type = typeof(T);
            BindingFlags searchPattern = BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance;
            ConstructorInfo constructor = type.GetConstructor(searchPattern, null, Type.EmptyTypes, null);

            if (constructor == null)
            {
                string errorMsg = String.Format("The type {0} does not have a default constructor.", type.FullName);
                throw new ArgumentNullException(errorMsg);
            }

            _instance = (T)constructor.Invoke(new object[0]);
            // ApplicationProtector.expType - wouldn't that just defy the purpose of generics ?
        }
}

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Singleton<MyClass> singleton = new Singleton<MyClass>();
singleton.Instance.Foo();
singleton.Instance.Bar = 5