不支持关键字:'版本' [英] Keyword not supported: 'version'

问题描述

我有一个在 VS2010 中作为 WinForms 项目编写的项目.我不是在 VS2012 中将它作为 WPF 项目编写的.我有一个引用的 DLL (DailyReport).DailyReport 内部是一个名为 GetUniqueDates() 的方法.它看起来像这样:

I've got this project that I wrote in VS2010 as a WinForms project. I'm not writing it in VS2012 as a WPF project. I have a referenced DLL (DailyReport). Inside DailyReport is a method called GetUniqueDates(). It looks like this:

    public List<string> GetUniquesDates()
    {
        var dates = new List<string>();

        const string query = "SELECT date FROM hdd_local_data_v1_2";

        try
        {
            // Exception here  on the connection creation
            using (var connection = new SqlConnection(ConnectionStringFile)) 
            {
                using (var command = new SqlCommand(query, connection))
                {
                    connection.Open();

                    using (var reader = command.ExecuteReader())
                    {
                        while (reader.Read())
                        {
                            for (var i = 0; i < reader.FieldCount; i++)
                            {
                                dates.Add(reader.GetValue(i).ToString());
                            }
                        }
                    }
                }
            }
        }
        catch (Exception ex)
        {         
            Logger.Error(ex.Message);
        }

        dates.Sort();

        return dates.Distinct().ToList();
    }

ConnectionStringFile 在构造函数中设置，如下所示:

The ConnectionStringFile is set in the constructor, and looks like this:

ConnectionStringFile = @"Data Source=C:\hdd_data\Rubicon.hdd;Version=3;New=False;Compress=True;";

现在，在我的 VS2010 WinForms 项目中，这种方法工作得很好.但是，在我的 VS2012 WPF 项目中，我遇到了上面提到的异常.例外是:

Now, in my VS2010 WinForms project, this method worked just fine. However, in my VS2012 WPF project, I get an exception where I noted above. And the exception is:

keyword not supported 'version'.

数据库是一个 SQLite 数据库.我试过删除 version 关键字，但是我得到了异常:

The database is a SQLite database. I've tried removing the version keyword, but then I'd get the exception:

keyword not supported 'new'.

我的问题是:为什么连接可以在我的 WinForms 项目而不是我的 WPF 项目中工作?处理数据库连接时有什么变化吗?

My question is: Why would the connection work in my WinForms project and not my WPF project? Is there something that changed when dealing with database connections?

另外，请注意，这不是关于参数化查询等的问题.因此，如果可能，请对自己发表这些评论.谢谢.

Also, please note, this isn't a question about parameterized queries and the like. So, if possible, please those comments to yourself. Thank you.

推荐答案

我遇到的问题是因为我试图创建一个 SqlConnection 而不是 SQLiteConnection.做出改变解决了我的问题.

The issue I was having was because I was trying to create a SqlConnection instead of a SQLiteConnection. Making that change solved my issue.

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