C# 读取c语言中的大型SQL脚本文件#

我正在尝试阅读大型脚本，迄今为止，我尝试了两种选择：

选项1:

public ActionResult Index()
{
   string scriptDirectory = "e:\\";
   string sqlConnectionString = "Integrated Security=SSPI;" +
   "Persist Security Info=True;Initial Catalog=TestDB;Data Source=localhost\\SQLEXPRESS";
   DirectoryInfo di = new DirectoryInfo(scriptDirectory);
   FileInfo[] rgFiles = di.GetFiles("*.sql");
   foreach (FileInfo fi in rgFiles)
   {
        FileInfo fileInfo = new FileInfo(fi.FullName);
        string script = fileInfo.OpenText().ReadToEnd(); // here visual studio crashes
        SqlConnection connection = new SqlConnection(sqlConnectionString);
        Server server = new Server(new ServerConnection(connection));
        server.ConnectionContext.ExecuteNonQuery(script);
   }

       return View();
}

由于内存空间不足，我们无法在SQL management studio中打开大型脚本文件，因此最初我使用

sqlcmd

在远程主机上执行160 mb的SQL脚本文件，55分钟后，一些行受到此错误的影响，

TCP Provider:远程主机强制关闭了现有连接，通信链路故障。

选项2:

public ActionResult Index()
{
   string scriptDirectory = "e:\\";
   string sqlConnectionString = "Integrated Security=SSPI;" +
   "Persist Security Info=True;Initial Catalog=TestDB;Data Source=localhost\\SQLEXPRESS";
   DirectoryInfo di = new DirectoryInfo(scriptDirectory);
   FileInfo[] rgFiles = di.GetFiles("*.sql");
   foreach (FileInfo fi in rgFiles)
   {
        FileInfo fileInfo = new FileInfo(fi.FullName);
        string script = fileInfo.OpenText().ReadToEnd(); // here visual studio crashes
        SqlConnection connection = new SqlConnection(sqlConnectionString);
        Server server = new Server(new ServerConnection(connection));
        server.ConnectionContext.ExecuteNonQuery(script);
   }

       return View();
}

现在我尝试使用这个示例，文件大小是160MB，有很多insert语句，但是VisualStudio崩溃了

代码：

public ActionResult Index()
{
   string scriptDirectory = "e:\\";
   string sqlConnectionString = "Integrated Security=SSPI;" +
   "Persist Security Info=True;Initial Catalog=TestDB;Data Source=localhost\\SQLEXPRESS";
   DirectoryInfo di = new DirectoryInfo(scriptDirectory);
   FileInfo[] rgFiles = di.GetFiles("*.sql");
   foreach (FileInfo fi in rgFiles)
   {
        FileInfo fileInfo = new FileInfo(fi.FullName);
        string script = fileInfo.OpenText().ReadToEnd(); // here visual studio crashes
        SqlConnection connection = new SqlConnection(sqlConnectionString);
        Server server = new Server(new ServerConnection(connection));
        server.ConnectionContext.ExecuteNonQuery(script);
   }

       return View();
}

屏幕截图：

public ActionResult Index()
{
   string scriptDirectory = "e:\\";
   string sqlConnectionString = "Integrated Security=SSPI;" +
   "Persist Security Info=True;Initial Catalog=TestDB;Data Source=localhost\\SQLEXPRESS";
   DirectoryInfo di = new DirectoryInfo(scriptDirectory);
   FileInfo[] rgFiles = di.GetFiles("*.sql");
   foreach (FileInfo fi in rgFiles)
   {
        FileInfo fileInfo = new FileInfo(fi.FullName);
        string script = fileInfo.OpenText().ReadToEnd(); // here visual studio crashes
        SqlConnection connection = new SqlConnection(sqlConnectionString);
        Server server = new Server(new ServerConnection(connection));
        server.ConnectionContext.ExecuteNonQuery(script);
   }

       return View();
}

---

我建议逐行执行insert语句（可选地包装在事务中）：

public ActionResult Index()
{
    string scriptDirectory = "e:\\";
    string sqlConnectionString = "Integrated Security=SSPI;" +
        "Persist Security Info=True;Initial Catalog=TestDB;Data Source=localhost\\SQLEXPRESS";

    using(var connection = new SqlConnection(sqlConnectionString))
    {
        var transaction = connection.BeginTransaction();
        using(var command = connection.CreateCommand())
        {
            ProcessFiles(command, scriptDirectory);
        }
        transaction.Commit();
    }
    return View();
}

private void ProcessFiles(SqlCommand command, string scriptDirectory)
{
    foreach(var file in Directory.GetFiles(scriptDirectory,"*.sql"))
    {
        using(var reader = new StreamReader(file))
        {
            while(!reader.EndOfStream)
            {
                var line = reader.ReadLine();
                if(!line.StartsWith("GO"))
                {
                    command.CommandText = line;
                    command.ExecuteNonQuery();
                }
            }
        }
    }        
}

---

请记住，这会给数据库的日志文件带来一些压力。

您的脚本是否包含

GO

分隔符？或者只有

插入…

行？为什么Visual Studio要读取该文件？不清楚为什么要在VisualStudio可执行文件中执行代码。（另外，请格式化您的代码以使其更可读。）@Dennis，是的，它包含

GO

分隔符，因为脚本文件是使用Sql management studio中的生成脚本向导生成的。如果只有

INSERT

s和

GO

s，则手动解析此文件相当容易。只需逐行读取文件，跳过

GO

语句，然后按照

SqlCommand

@Jon Skeet执行一个

INSERT

语句，我已经做了更改，谢谢。