大量后端代码格式化

Service/ImportService.cs

@@ -133,7 +133,7 @@ public class ImportService(
                 return DateTime.MinValue;
             }
 
-            foreach (var format in DateTimeFormats)
+            foreach (var format in _dateTimeFormats)
             {
                 if (DateTime.TryParseExact(
                     row[key],
@@ -288,7 +288,7 @@ public class ImportService(
                 return DateTime.MinValue;
             }
 
-            foreach (var format in DateTimeFormats)
+            foreach (var format in _dateTimeFormats)
             {
                 if (DateTime.TryParseExact(
                     row[key],
@@ -358,14 +358,13 @@ public class ImportService(
         {
             return await ParseCsvAsync(file);
         }
-        else if (fileExtension == ".xlsx" || fileExtension == ".xls")
+
+        if (fileExtension == ".xlsx" || fileExtension == ".xls")
         {
             return await ParseExcelAsync(file);
         }
-        else
-        {
-            throw new NotSupportedException("不支持的文件格式");
-        }
+
+        throw new NotSupportedException("不支持的文件格式");
     }
 
     private async Task<IDictionary<string, string>[]> ParseCsvAsync(MemoryStream file)
@@ -388,7 +387,7 @@ public class ImportService(
 
         if (headers == null || headers.Length == 0)
         {
-            return Array.Empty<IDictionary<string, string>>();
+            return [];
         }
 
         var result = new List<IDictionary<string, string>>();
@@ -420,7 +419,7 @@ public class ImportService(
 
         if (worksheet == null || worksheet.Dimension == null)
         {
-            return Array.Empty<IDictionary<string, string>>();
+            return [];
         }
 
         var rowCount = worksheet.Dimension.End.Row;
@@ -428,7 +427,7 @@ public class ImportService(
 
         if (rowCount < 2)
         {
-            return Array.Empty<IDictionary<string, string>>();
+            return [];
         }
 
         // 读取表头（第一行）
@@ -458,7 +457,7 @@ public class ImportService(
         return await Task.FromResult(result.ToArray());
     }
 
-    private static string[] DateTimeFormats =
+    private static string[] _dateTimeFormats =
     [
         "yyyy-MM-dd",
         "yyyy-MM-dd HH",