GUIControl.drawSlots C# (CSharp) Method

    private void drawSlots()
    {
        int predio = 0;
        int slot = 0;
        while(predio != 0 && slot != 9){ // 0 == NULL WARNING
            slot++;
            predio = SlotPredios[slot];
            if (predio != 0){ // 0 == NULL WARNING
                if (predio == 1)
                    GUI.Label (new Rect (527 + 33*slot,16,ComandoOxTexture.width,ComandoOxTexture.height), ComandoOxTexture);
                if (predio == 2)
                    GUI.Label (new Rect (527 + 33*slot,16,LabOxTexture.width,LabOxTexture.height), LabOxTexture);
                if (predio == 3)
                    GUI.Label (new Rect (527 + 33*slot,16,SegurancaOxTexture.width,SegurancaOxTexture.height), SegurancaOxTexture);
                if (predio == 4)
                    GUI.Label (new Rect (527+ 33*slot,16,FazendaOxTexture.width,FazendaOxTexture.height), FazendaOxTexture);
                if (predio == 5)
                    GUI.Label (new Rect (527 + 33*slot,16,FabricaOxTexture.width,FabricaOxTexture.height), FabricaOxTexture);
            }
        }
    }