Dapper与MS Access更新和插入问题 [英] Dapper with MS Access Update and Insert issue

问题描述

我正在使用Dapper更新和插入Access DB.代码正在工作，不会引发异常，但不会更新DB中的值.下面是我的代码

I am using Dapper to Update and Insert Access DB. Code is working not throwing exception but its not updating the value in DB. Below is my code

sql.Append("UPDATE drugs_repository SET drug_name = @DrugName ");

sql.Append(" WHERE id = @DrugId");

var parameters = new
{
    DrugName = objDrug.DrugName,                           
    DrugId = objDrug.DrugId
};
var t = connection.Query<string>(sql.ToString(), parameters);

有人可以让我知道以上代码中我到底缺少什么吗? 当我对值进行硬编码时，要比在数据库中更新它.因此可能与参数有关.

Can someone please let me know what exactly I am missing in the above code? When I hardcode the value than its updating in the DB. So probably its related to parameter.

推荐答案

如果您对删除Dapper代码中的.OrderBy()可能产生的副作用感到不安，那么一种解决方法是使用这样的方式来命名您的参数:它们将按照在SQL命令中出现的顺序进行排序.例如，我怀疑如果将参数分别命名为@1DrugName和@2DrugId，则未修改的Dapper代码可能会正常工作.

If you are nervous about possible side-effects from removing the .OrderBy() in the Dapper code then a workaround would be to name your parameters in such a way that they will sort in the same order that they appear in the SQL command. For example, I suspect that the unmodified Dapper code would probably work okay if the parameters were named @1DrugName and @2DrugId.

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