去掉开头空格

performance/Performance.Services/PerExcelService/PerSheetService.cs

@@ -78,7 +78,7 @@ public PerSheet Sheet(ISheet sheet, bool isnew)
         /// <returns></returns>
         public SheetType GetSheetType(string sheetName)
         {
-            sheetName = sheetName.Trim();
+            sheetName = sheetName.TrimStart();
             if (sheetName.StartsWith("行政中高层"))
                 return SheetType.Employee;
             else if (sheetName.StartsWith("业务中层"))