|  | @@ -40,7 +40,8 @@ namespace WCS.Service.Extensions
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				|  |  |                  return tasklist.OrderBy(v => v.Col).ToArray();
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				|  |  |              }
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				|  |  |              return tasklist.OrderByDescending(v => v.Priority)
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				|  |  | -                           .GroupBy(v => v.MaterialCode).FirstOrDefault()
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				|  |  | +                           .GroupBy(v => v.MaterialCode)
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				|  |  | +                           .OrderBy(v => v.Key).FirstOrDefault()
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				|  |  |                             .OrderByDescending(v => v.Priority)
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				|  |  |                             .ThenBy(v => v.Line)
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				|  |  |                             .ThenBy(v => v.Layer)
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