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C++ to C#

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does anyone know what the equivalent of this is in C#?
void LoadXFile( char* MeshFilename, ID3DXMesh* &Mesh )
	//Zero Mesh and create buffer
	Mesh = 0;
	ID3DXBuffer* MeshBuffer  = 0;

	//Load and optimize the mesh
	D3DXLoadMeshFromX( MeshFilename, D3DXMESH_MANAGED, D3DDevice, &MeshBuffer, 0, 0, 0, &Mesh);
	Mesh->OptimizeInplace( D3DXMESHOPT_ATTRSORT | D3DXMESHOPT_COMPACT | D3DXMESHOPT_VERTEXCACHE, (DWORD*)MeshBuffer->GetBufferPointer(), 0, 0, 0);

	//Release and zero the buffer
	MeshBuffer->Release(); MeshBuffer = NULL;

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Mesh mesh = LoadMeshFromX("model.x");
GraphicsStream stm = mesh.VertexBuffer.Lock(0, 0, LockFlags.None);
mesh.OptimizeInPlace(MeshFlags.OptimizeCompact, stm);

I hope this helps.
take care.

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This is closer:

Mesh mesh = Mesh.FromFile(MeshFilename, MeshFlags.Managed, device);
Microsoft.DirectX.GraphicsStream meshBuffer = mesh.VertexBuffer.Lock(0, 0, LockFlags.None);
mesh.OptimizeInPlace(MeshFlags.OptimizeAttributeSort | MeshFlags.OptimizeCompact | MeshFlags.OptimizeVertexCache, meshBuffer);

Only thing I'm a bit fuzzy on is what flags to use when locking the vertex buffer. You may need to fiddle with that some.

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