OpenTK-VBO和Mesh，内存异常

我有一个类，我试图用它来渲染一个三角形，但它一直失败，我不知道为什么，有人能发现问题吗？我试过使用静态和动态vbo，但我一直遇到内存问题。

我收到的错误是：

"OpenTK.dll 中发生类型为"System.AccessViolationException"的未处理异常

附加信息：试图读取或写入受保护的内存。这通常表示其他内存已损坏。"

我的用法是：

        var m = new Mesh();
        m.Vertices = new float[] { 
            0, 0, 0, 
            5, 0, 0, 
            5, 5, 0
        };

        m._Indices = new ushort[] { 0, 1, 2 };
        m.Init();

我的课是

namespace lolGL
{
    using System;
    using OpenTK.Graphics.OpenGL;
    using OpenTK;
    public class Mesh : Entity
    {
        public ushort[] _Indices = null;
        int m_vertexBuffer = 0;
        int m_indexBuffer = 0;
        bool use16BitIndices
        {
            get { return Vertices.Length <= 65536; }
        }
        public Mesh() { }
        public void Init()
        {
            GL.GenBuffers(1, out m_vertexBuffer);
            GL.BindBuffer(BufferTarget.ArrayBuffer, m_vertexBuffer);
            GL.BufferData(BufferTarget.ArrayBuffer, new IntPtr(BlittableValueType.StrideOf<float>(Vertices) * Vertices.Length), Vertices, BufferUsageHint.StaticDraw);
            GL.GenBuffers(1, out m_indexBuffer);
            GL.BindBuffer(BufferTarget.ElementArrayBuffer, m_indexBuffer);
            int indexSize = use16BitIndices ? sizeof(short) : sizeof(int);
            GL.BufferData(BufferTarget.ElementArrayBuffer, new IntPtr(indexSize * _Indices.Length), _Indices, BufferUsageHint.StaticDraw);
            GL.BindBuffer(BufferTarget.ElementArrayBuffer, 0);
        }
        public override void Render(OpenTK.FrameEventArgs e)
        {
            GL.BindBuffer(BufferTarget.ArrayBuffer, m_vertexBuffer);
            GL.BindBuffer(BufferTarget.ArrayBuffer, m_indexBuffer);
            GL.EnableClientState(ArrayCap.VertexArray);
            GL.VertexPointer(3, VertexPointerType.Float, Vector3.SizeInBytes, 0);
            if (use16BitIndices)
                GL.DrawElements(BeginMode.TriangleStrip, _Indices.Length, DrawElementsType.UnsignedShort, 0);
            else
                GL.DrawElements(BeginMode.TriangleStrip, _Indices.Length, DrawElementsType.UnsignedInt, 0);
            GL.Disable(EnableCap.VertexArray);
            GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
            GL.BindBuffer(BufferTarget.ElementArrayBuffer, 0);
        }
        public override void EmptyBuffer()
        {
            Vertices = null;
            _Indices = null;
        }
        public override void Dispose()
        {
            EmptyBuffer();
        }
        public override void Delete()
        {
            if (m_indexBuffer != 0)
                GL.DeleteBuffers(1, ref m_indexBuffer);
            if (m_vertexBuffer != 0)
                GL.DeleteBuffers(1, ref m_vertexBuffer);
            Dispose();
        }
        public override void ApplyColorMap(int[] colors)
        {
            throw new NotImplementedException();
        }
    }
}

GL.BindBuffer(BufferTarget.ArrayBuffer, m_indexBuffer);

GL.BindBuffer(BufferTarget.ElementArrayBuffer, m_indexBuffer);