Triangles for sphere

I have been trying to make a sphere through code for a couple of hours now, I have got the vertices part working but I am stuck on getting the triangles to work. When I try to run my test example I get some hollow bowl looking thing, I have checked that there isn't anything wrong with the vertices with Gizmos, here is the code I tried using:

     private void CreateTriangles()
     {
         int len = vertices.Length;
         //Top Cap
         int i = 0;
         for (int lon = 0; lon < Width; lon++)
         {
             triangles[i++] = lon + 2;
             triangles[i++] = lon + 1;
             triangles[i++] = 0;
         }
 
         //Middle
         for (int lat = 0; lat < Width - 1; lat++)
         {
             for (int lon = 0; lon < Width; lon++)
             {
                 int current = lon + lat * (Width + 1) + 1;
                 int next = current + Width + 1;
 
                 triangles[i++] = current;
                 triangles[i++] = current + 1;
                 triangles[i++] = next + 1;
 
                 triangles[i++] = current;
                 triangles[i++] = next + 1;
                 triangles[i++] = next;
             }
         }
 
         //Bottom Cap
         for (int lon = 0; lon < Width; lon++)
         {
             triangles[i++] = len - 1;
             triangles[i++] = len - (lon + 2) - 1;
             triangles[i++] = len - (lon + 1) - 1;
         }
     }

If you need more code to understand the problem just ask. Result: