使用 foreachloop 将数据插入数据库

本文关键字：插入 数据库 数据 foreachloop 使用 | 更新日期: 2023-09-27 17:58:10

我正在使用foreach循环

foreach(var x in items)
{
    // enter code here
}
在我的

代码中，我正在将数据发送到数据库，假设在我的items列表中，我有 10 条记录，由于发送数据失败的问题，我在发送 5 条记录后发送到数据库如何回滚我发送到database的所有数据。

有没有办法处理这种情况 - 我正在使用实体数据模型

使用 foreachloop 将数据插入数据库

如何回滚我发送到数据库的所有数据。

将事务与插入命令一起使用。如果目标数据库是 SQL Server，则会导致 SqlTransaction try/catch 块，以便在发生异常时可以Rollback事务。

来自 MSDN 的示例

private static void ExecuteSqlTransaction(string connectionString)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        connection.Open();
        SqlCommand command = connection.CreateCommand();
        SqlTransaction transaction;
        // Start a local transaction.
        transaction = connection.BeginTransaction("SampleTransaction");
        // Must assign both transaction object and connection 
        // to Command object for a pending local transaction
        command.Connection = connection;
        command.Transaction = transaction;
        try
        {
            command.CommandText =
                "Insert into Region (RegionID, RegionDescription) VALUES (100, 'Description')";
            command.ExecuteNonQuery();
            command.CommandText =
                "Insert into Region (RegionID, RegionDescription) VALUES (101, 'Description')";
            command.ExecuteNonQuery();
            // Attempt to commit the transaction.
            transaction.Commit();
            Console.WriteLine("Both records are written to database.");
        }
        catch (Exception ex)
        {
            Console.WriteLine("Commit Exception Type: {0}", ex.GetType());
            Console.WriteLine("  Message: {0}", ex.Message);
            // Attempt to roll back the transaction. 
            try
            {
                transaction.Rollback();
            }
            catch (Exception ex2)
            {
                // This catch block will handle any errors that may have occurred 
                // on the server that would cause the rollback to fail, such as 
                // a closed connection.
                Console.WriteLine("Rollback Exception Type: {0}", ex2.GetType());
                Console.WriteLine("  Message: {0}", ex2.Message);
            }
        }
    }
}
相关文章：