Web任何时候需要在远程服务器上执行操作时,程序都会生成请求,将其发送,然后等待响应。. 我将使用 SaveChanges () 和 SaveChangesAsync () 作为示例,但对 Find () 和适用相同 FindAsync () 。. 假设您有一个 myList 需要添加到数据库中的100多个项目的列表。. 要插入 … WebDbExtensions.AsNoTracking 方法 (System.Data.Entity) 傳回新的查詢,其中傳回的實體將不會在 或 ObjectContext 中 DbContext 快取。. 這個方法的運作方式是藉由呼叫基礎查詢物件的 AsNoTracking 方法。. 如果基礎查詢物件沒有 AsNoTracking 方法,則呼叫這個方法將不會有 …
记录一次BUG修复-Entity Framwork SaveChanges()失效 …
WebMar 24, 2024 · This enables you to have a "default" way to save your data, but consumers can effectively override it when they choose to. A simple example: // DAL public class PersonRepository { private void SetPersonName (int personId, string name) { var person = db.People.Single (x => x.Id == personId); person.Name = name; db.SaveChanges (); } } Web执行进入MyCallingFunction,Function Starting然后Save Starting写入控制台,然后SaveChangesAsync()调用该函数。此时,执行返回MyCallingFunction并进入for循环, … cricket india vs pakistan 2017 streaming
c# - SaveChanges vs SaveChangesAsync in Entity Framework - Stack Overflow
WebSaveChangesAsync (CancellationToken) Enregistre de façon asynchrone toutes les modifications apportées dans ce contexte à la base de données sous-jacente. C#. [System.Diagnostics.CodeAnalysis.SuppressMessage ("Microsoft.Usage", "CA1801:ReviewUnusedParameters", MessageId="cancellationToken")] public virtual … WebJul 21, 2024 · When the code reaches the _context.SaveChangesAsync(), I receive the following error: "Database operation expected to affect 1 row(s) but actually affected 0 row(s). Data may have been modified or deleted since entities were loaded. WebOct 7, 2024 · User-1849651236 posted Hello, I have an Asp.Net Core 2.1, MVC, C# Web application in Visual Studio 2024 15.7.5. My Nuget packages show that I am using Microsoft.EntityFrameworkCore.Tools 2.1.1. In my coding shown at the end of this post, my program hangs up on this statement: await _context ... · User-1849651236 posted … cricket india vs england 1st odi highlights