WebFeb 24, 2024 · Introduction. Asynchronous saving avoids blocking a thread while the changes are written to the database. This can be useful to avoid freezing the UI of a thick-client application. Entity Framework Core provides DbContext.SaveChangesAsync () as an asynchronous alternative to DbContext.SaveChanges (). EF Core does not support … 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 …
实体框架SaveChanges()与SaveChangesAsync()和Find() …
WebC# (CSharp) DbContext.SaveChangesAsync - 34 examples found. These are the top rated real world C# (CSharp) examples of DbContext.SaveChangesAsync from package code extracted from open source projects. You can rate examples to help us improve the quality of examples. public async Task CreateAsync (TEntity item) { var entity … WebMar 11, 2024 · tasks.Add(MyContext.SaveChangesAsync()); And you code becomes working. (await expression returns async result, without await returns Task that will be executed later) But as was mentioned before you should not execute SaveChangesAsync() each time as entity is added to context it might be done for all added entities for one time. how many stamps to mail 5 sheets of paper
DbContext.SaveChangesAsync Méthode (System.Data.Entity)
Web首先,定义一个TaskCompletionSource的实例。. 它接受一个泛型参数,该参数表示您想要返回的类型。. 在本例中,我们希望返回成功变量的值,这是一个布尔值,因此使用bool作为泛型参数。. var taskCompletionSource = new TaskCompletionSource (); 我们把它定义在一个helper ... 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. how many stamps to mail 3 oz envelope