## Xna\Graphics\EffectTechniqueCollection.cs

using System.Collections.Generic;

namespace Microsoft.Xna.Framework.Graphics {
	// <summary>Manipulates a collection of EffectTechnique objects.</summary>
	public class EffectTechniqueCollection : IEnumerable <EffectTechnique> {
		public EffectTechnique this [int index] {
			get { throw new System.NotImplementedException(); }
		}
		public EffectTechnique this [string name] {
			get { throw new System.NotImplementedException(); }
		}
		// <summary>Gets the number of objects in the collection.</summary>
		public int Count {
			get { throw new System.NotImplementedException(); }
		}
		
		// <summary>Gets an enumerator that can iterate through the EffectTechniqueCollection.</summary>
		public List<EffectTechnique>.Enumerator GetEnumerator() {
			throw new System.NotImplementedException();
		}
	}
}

## Errors

Xna\Graphics\EffectTechniqueCollection.cs(5,15): error CS0738: 'Microsoft.Xna.Framework.Graphics.EffectTechniqueCollection' does not implement interface member 'System.Collections.Generic.IEnumerable<Microsoft.Xna.Framework.Graphics.EffectTechnique>.GetEnumerator()'. 'Microsoft.Xna.Framework.Graphics.EffectTechniqueCollection.GetEnumerator()' cannot implement 'System.Collections.Generic.IEnumerable<Microsoft.Xna.Framework.Graphics.EffectTechnique>.GetEnumerator()' because it does not have the matching return type of 'System.Collections.Generic.IEnumerator<Microsoft.Xna.Framework.Graphics.EffectTechnique>'.
c:\Windows\Microsoft.NET\Framework64\v2.0.50727\mscorlib.dll: (Location of symbol related to previous error)
Xna\Graphics\EffectTechniqueCollection.cs(18,43): (Location of symbol related to previous error)
Xna\Graphics\EffectTechniqueCollection.cs(5,15): error CS0738: 'Microsoft.Xna.Framework.Graphics.EffectTechniqueCollection' does not implement interface member 'System.Collections.IEnumerable.GetEnumerator()'. 'Microsoft.Xna.Framework.Graphics.EffectTechniqueCollection.GetEnumerator()' cannot implement 'System.Collections.IEnumerable.GetEnumerator()' because it does not have the matching return type of 'System.Collections.IEnumerator'.