小编Gil*_*ian的帖子

我需要一个函数,它在数据库上执行INSERT语句并返回Auto_Increment主键.我有以下C#代码但是,虽然INSERT语句工作正常(我可以看到数据库中的记录,PK是正确生成的,行== 1),但id值始终为0.任何关于可能会发生什么的想法错误？

    public int ExecuteInsertStatement(string statement)
    {
        InitializeAndOpenConnection();
        int id = -1;


        IDbCommand cmdInsert = connection.CreateCommand();
        cmdInsert.CommandText = statement;
        int rows = cmdInsert.ExecuteNonQuery();

        if (rows == 1)
        {
            IDbCommand cmdId = connection.CreateCommand();
            cmdId.CommandText = "SELECT @@Identity;";
            id = (int)cmdId.ExecuteScalar();
        }

        return id;
    }
    private void InitializeAndOpenConnection()
    {
        if (connection == null)
            connection = OleDbProviderFactory.Instance.CreateConnection(connectString);

        if(connection.State != ConnectionState.Open)                 
            connection.Open();
    }

为了回答答案,我试过:

public int ExecuteInsertStatement(string statement, string tableName)
    {
        InitializeAndOpenConnection();
        int id = -1;
        IDbCommand cmdInsert = connection.CreateCommand();
        cmdInsert.CommandText = statement + …