fix: 需要正确处理协变逆变问题，兼容.NET2.0。fix: #125

NewLifeX · Jul 6, 2023 · 9534457 · 9534457
1 parent 610e85a
commit 9534457
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/NewLife.Core/IO/CsvDb.cs b/NewLife.Core/IO/CsvDb.cs
@@ -52,8 +52,8 @@ public void Write(IEnumerable<T> models, Boolean append)
 
         var pis = typeof(T).GetProperties(BindingFlags.Public | BindingFlags.Instance);
 
-        // 首次写入文件头
-        if (fs.Position == 0) csv.WriteLine(pis.Select(e => e.Name));
+        // 首次写入文件头。需要正确处理协变逆变问题，兼容.NET2.0
+        if (fs.Position == 0) csv.WriteLine(pis.Select(e => e.Name as Object));
 
         // 写入数据
         foreach (var item in models)