MigrationCommand.ExecuteNonQueryAsync 方法

定义

命名空间:

Microsoft.EntityFrameworkCore.Migrations

程序集:

Microsoft.EntityFrameworkCore.Relational.dll

包:

Microsoft.EntityFrameworkCore.Relational v9.0.0

重载

ExecuteNonQueryAsync(IRelationalConnection, IReadOnlyDictionary<String,Object>, CancellationToken)

执行 命令并返回受影响的行数。

ExecuteNonQueryAsync(IRelationalConnection, IReadOnlyDictionary<String,Object>, CancellationToken)

Source:

MigrationCommand.cs

执行 命令并返回受影响的行数。

public virtual System.Threading.Tasks.Task<int> ExecuteNonQueryAsync (Microsoft.EntityFrameworkCore.Storage.IRelationalConnection connection, System.Collections.Generic.IReadOnlyDictionary<string,object?>? parameterValues = default, System.Threading.CancellationToken cancellationToken = default);

abstract member ExecuteNonQueryAsync : Microsoft.EntityFrameworkCore.Storage.IRelationalConnection * System.Collections.Generic.IReadOnlyDictionary<string, obj> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<int>
override this.ExecuteNonQueryAsync : Microsoft.EntityFrameworkCore.Storage.IRelationalConnection * System.Collections.Generic.IReadOnlyDictionary<string, obj> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<int>

Public Overridable Function ExecuteNonQueryAsync (connection As IRelationalConnection, Optional parameterValues As IReadOnlyDictionary(Of String, Object) = Nothing, Optional cancellationToken As CancellationToken = Nothing) As Task(Of Integer)

参数

connection

IRelationalConnection

要对其执行的连接。

parameterValues

IReadOnlyDictionary<String,Object>

参数的值;如果 null 命令没有参数，则为 。

cancellationToken

CancellationToken

等待 CancellationToken 任务完成时要观察的 。

返回

Task<Int32>

表示异步操作的任务。 任务结果包含受影响的行数。

例外

OperationCanceledException

如果已取消 CancellationToken。