如何使用C＃执行.SQL脚本文件

我确定这个问题已经回答了，但是我无法使用搜索工具找到答案。

使用C＃，我想运行一个.sql文件。sql文件包含多个sql语句，其中一些语句分成多行。我尝试读取文件，并尝试使用ODP.NET执行文件...但是，我认为ExecuteNonQuery并非真正旨在执行此操作。

因此，我尝试通过产生一个进程来使用sqlplus ...但是，除非我在UseShellExecute设置为true的情况下产生该进程，否则sqlplus会挂起并且永远不会退出。这是不起作用的代码。

Process p = new Process();
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.FileName = "sqlplus";
p.StartInfo.Arguments = string.Format("xx/xx@{0} @{1}", in_database, s);
p.StartInfo.CreateNoWindow = true;

bool started = p.Start();
p.WaitForExit();

WaitForExit永远不会返回...。除非将UseShellExecute设置为true。UseShellExecute的副作用是您无法捕获重定向的输出。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Microsoft.SqlServer.Management.Smo;
using Microsoft.SqlServer.Management.Common;
using System.IO;
using System.Data.SqlClient;

public partial class ExcuteScript : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    string sqlConnectionString = @"Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=ccwebgrity;Data Source=SURAJIT\SQLEXPRESS";

    string script = File.ReadAllText(@"E:\Project Docs\MX462-PD\MX756_ModMappings1.sql");

    SqlConnection conn = new SqlConnection(sqlConnectionString);

    Server server = new Server(new ServerConnection(conn));

    server.ConnectionContext.ExecuteNonQuery(script);
    }
}

我使用Microsoft.SqlServer.Management尝试了该解决方案，但它不适用于.NET 4.0，因此我仅使用.NET库框架编写了另一个解决方案。

string script = File.ReadAllText(@"E:\someSqlScript.sql");

// split script on GO command
IEnumerable<string> commandStrings = Regex.Split(script, @"^\s*GO\s*$", RegexOptions.Multiline | RegexOptions.IgnoreCase);

Connection.Open();
foreach (string commandString in commandStrings)
{
    if (!string.IsNullOrWhiteSpace(commandString.Trim()))
    {
        using(var command = new SqlCommand(commandString, Connection))
        {
            command.ExecuteNonQuery();
        }
    }
}     
Connection.Close();

这适用于Framework 4.0或更高版本。支持“ GO”。还显示错误消息，行和sql命令。

using System.Data.SqlClient;

        private bool runSqlScriptFile(string pathStoreProceduresFile, string connectionString)
    {
        try
        {
            string script = File.ReadAllText(pathStoreProceduresFile);

            // split script on GO command
            System.Collections.Generic.IEnumerable<string> commandStrings = Regex.Split(script, @"^\s*GO\s*$",
                                     RegexOptions.Multiline | RegexOptions.IgnoreCase);
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                connection.Open();
                foreach (string commandString in commandStrings)
                {
                    if (commandString.Trim() != "")
                    {
                        using (var command = new SqlCommand(commandString, connection))
                        {
                        try
                        {
                            command.ExecuteNonQuery();
                        }
                        catch (SqlException ex)
                        {
                            string spError = commandString.Length > 100 ? commandString.Substring(0, 100) + " ...\n..." : commandString;
                            MessageBox.Show(string.Format("Please check the SqlServer script.\nFile: {0} \nLine: {1} \nError: {2} \nSQL Command: \n{3}", pathStoreProceduresFile, ex.LineNumber, ex.Message, spError), "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                            return false;
                        }
                    }
                    }
                }
                connection.Close();
            }
        return true;
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message, "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            return false;
        }
    }

将执行sql脚本的命令放入批处理文件中，然后运行以下代码

string batchFileName = @"c:\batosql.bat";
string sqlFileName = @"c:\MySqlScripts.sql";
Process proc = new Process();
proc.StartInfo.FileName = batchFileName;
proc.StartInfo.Arguments = sqlFileName;
proc.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
proc.StartInfo.ErrorDialog = false;
proc.StartInfo.WorkingDirectory = Path.GetDirectoryName(batchFileName);
proc.Start();
proc.WaitForExit();
if ( proc.ExitCode!= 0 )

在批处理文件中编写这样的内容（用于SQL Server的示例）

osql -E -i %1

这对我有用：

public void updatedatabase()
{

    SqlConnection conn = new SqlConnection("Data Source=" + txtserver.Text.Trim() + ";Initial Catalog=" + txtdatabase.Text.Trim() + ";User ID=" + txtuserid.Text.Trim() + ";Password=" + txtpwd.Text.Trim() + "");
    try
    {

        conn.Open();

        string script = File.ReadAllText(Server.MapPath("~/Script/DatingDemo.sql"));

        // split script on GO command
        IEnumerable<string> commandStrings = Regex.Split(script, @"^\s*GO\s*$", RegexOptions.Multiline | RegexOptions.IgnoreCase);
        foreach (string commandString in commandStrings)
        {
            if (commandString.Trim() != "")
            {
                new SqlCommand(commandString, conn).ExecuteNonQuery();
            }
        }
        lblmsg.Text = "Database updated successfully.";

    }
    catch (SqlException er)
    {
        lblmsg.Text = er.Message;
        lblmsg.ForeColor = Color.Red;
    }
    finally
    {
        conn.Close();
    }
}

增加了对surajits答案的其他改进：

using System;
using Microsoft.SqlServer.Management.Smo;
using Microsoft.SqlServer.Management.Common;
using System.IO;
using System.Data.SqlClient;

namespace MyNamespace
{
    public partial class RunSqlScript : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            var connectionString = @"your-connection-string";
            var pathToScriptFile = Server.MapPath("~/sql-scripts/") + "sql-script.sql";
            var sqlScript = File.ReadAllText(pathToScriptFile);

            using (var connection = new SqlConnection(connectionString))
            {
                var server = new Server(new ServerConnection(connection));
                server.ConnectionContext.ExecuteNonQuery(sqlScript);
            }
        }
    }
}

另外，我必须在项目中添加以下引用：

• C:\Program Files\Microsoft SQL Server\120\SDK\Assemblies\Microsoft.SqlServer.ConnectionInfo.dll
• C:\Program Files\Microsoft SQL Server\120\SDK\Assemblies\Microsoft.SqlServer.Smo.dll

我不知道这些是不是正确的dll：s，因为C：\ Program Files \ Microsoft SQL Server中有多个文件夹，但是在我的应用程序中这两个起作用。

我通过阅读手册设法找到了答案:)

此摘录来自MSDN

该代码示例通过在p.WaitForExit之前调用p.StandardOutput.ReadToEnd来避免死锁情况。如果父进程在p.StandardOutput.ReadToEnd之前调用p.WaitForExit，并且子进程写入足够的文本以填充重定向的流，则可能导致死锁。父进程将无限期地等待子进程退出。子进程将无限期等待父进程从完整的StandardOutput流中读取。

从标准输出和标准错误流中读取所有文本时，也会出现类似的问题。例如，以下C＃代码对两个流都执行读取操作。

将代码转换为此；

Process p = new Process();
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.FileName = "sqlplus";
p.StartInfo.Arguments = string.Format("xxx/xxx@{0} @{1}", in_database, s);

bool started = p.Start();
// important ... read stream input before waiting for exit.
// this avoids deadlock.
string output = p.StandardOutput.ReadToEnd();

p.WaitForExit();

Console.WriteLine(output);

if (p.ExitCode != 0)
{
    Console.WriteLine( string.Format("*** Failed : {0} - {1}",s,p.ExitCode));
    break;
}

现在可以正确退出了。

有两点需要考虑。

1）此源代码对我有用：

private static string Execute(string credentials, string scriptDir, string scriptFilename)
{ 
  Process process = new Process();
  process.StartInfo.UseShellExecute = false;
  process.StartInfo.WorkingDirectory = scriptDir;
  process.StartInfo.RedirectStandardOutput = true;
  process.StartInfo.FileName = "sqlplus";
  process.StartInfo.Arguments = string.Format("{0} @{1}", credentials, scriptFilename);
  process.StartInfo.CreateNoWindow = true;

  process.Start();
  string output = process.StandardOutput.ReadToEnd();
  process.WaitForExit();

  return output;
}

我将工作目录设置为脚本目录，以便脚本中的子脚本也可以工作。

称它为 Execute("usr/pwd@service", "c:\myscripts", "script.sql")

2）您必须使用以下语句结束SQL脚本 EXIT;

使用EntityFramework，您可以使用这样的解决方案。我使用此代码初始化e2e测试。为了防止sql注入攻击，请确保不要基于用户输入生成此脚本或为此使用命令参数（请参见接受参数的ExecuteSqlCommand重载）。

public static void ExecuteSqlScript(string sqlScript)
{
    using (MyEntities dataModel = new MyEntities())
    {
        // split script on GO commands
        IEnumerable<string> commands = 
            Regex.Split(
                sqlScript, 
                @"^\s*GO\s*$",
                RegexOptions.Multiline | RegexOptions.IgnoreCase);

        foreach (string command in commands)
        {
            if (command.Trim() != string.Empty)
            {
                dataModel.Database.ExecuteSqlCommand(command);
            }
        }              
    }
}

我找不到任何准确有效的方法来执行此操作。因此，整整一天之后，我带来了从不同来源获得的混合代码，并试图完成工作。

但是，ExecuteNonQuery: CommandText property has not been Initialized即使它成功运行了脚本文件，它仍然会生成异常-在我的情况下，它成功创建了数据库并在第一次启动时插入了数据。

public partial class Form1 : MetroForm
{
    SqlConnection cn;
    SqlCommand cm;
    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        if (!CheckDatabaseExist())
        {
            GenerateDatabase();
        }
    }

    private bool CheckDatabaseExist()
    {
        SqlConnection con = new SqlConnection(@"Data Source=.\SQLEXPRESS;Initial Catalog=SalmanTradersDB;Integrated Security=true");
        try
        {
            con.Open();
            return true;
        }
        catch
        {
            return false;
        }
    }

    private void GenerateDatabase()
    {

        try
        {
            cn = new SqlConnection(@"Data Source=.\SQLEXPRESS;Initial Catalog=master;Integrated Security=True");
            StringBuilder sb = new StringBuilder();
            sb.Append(string.Format("drop databse {0}", "SalmanTradersDB"));
            cm = new SqlCommand(sb.ToString() , cn);
            cn.Open();
            cm.ExecuteNonQuery();
            cn.Close();
        }
        catch
        {

        }
        try
        {
            //Application.StartupPath is the location where the application is Installed
            //Here File Path Can Be Provided Via OpenFileDialog
            if (File.Exists(Application.StartupPath + "\\script.sql"))
            {
                string script = null;
                script = File.ReadAllText(Application.StartupPath + "\\script.sql");
                string[] ScriptSplitter = script.Split(new string[] { "GO" }, StringSplitOptions.None);
                using (cn = new SqlConnection(@"Data Source=.\SQLEXPRESS;Initial Catalog=master;Integrated Security=True"))
                {
                    cn.Open();
                    foreach (string str in ScriptSplitter)
                    {
                        using (cm = cn.CreateCommand())
                        {
                            cm.CommandText = str;
                            cm.ExecuteNonQuery();
                        }
                    }
                }
            }
        }
        catch
        {

        }

    }

}