1

我想将用户输入作为参数从我的 firebird 数据库中删除某些记录。

所以我有以下代码

private void btnOk_Click(object sender, EventArgs e)
        {
            string code = txtDeleteField.Text;
            string connString = ConfigurationManager.AppSettings["DemoAppConnectionString"];

            using (FbConnection conn = new FbConnection(connString))
            {
                using (FbCommand cmd = new FbCommand())
                {
                    cmd.CommandText = "DELETE * FROM DEMOAPP WHERE CODE= @P1";
                    cmd.Parameters.AddWithValue("@P1", code);
                    cmd.Connection = conn;
                    conn.Open();
                    cmd.Transaction = conn.BeginTransaction();

                    int a = cmd.ExecuteNonQuery();
                    if (a == 0)
                    {
                        MessageBox.Show("Error!");
                    }
                    else
                    {
                        MessageBox.Show("Record deleted, ok!" );
                    }
                }

            }
        }

此代码产生错误

FirebirdSql.Data.FirebirdClient.dll 中出现“FirebirdSql.Data.FirebirdClient.FbException”类型的未处理异常

附加信息：动态 SQL 错误
SQL 错误代码 = -104
令牌未知 - 第 1 行，第 8 列
*
4

1 回答 1

1

您的查询错误，无效：语句中"DELETE * FROM DEMOAPP WHERE CODE= @P1"应该没有。*DELETE

将其更改为"DELETE FROM DEMOAPP WHERE CODE= @P1"应该可以解决问题。

于 2013-06-27T09:41:31.330 回答