在其他计算机上安装应用程序时无法附加数据库文件

Question

我已将我的数据库文件（.mdf）放在bin \ debug文件夹中并使用此app.config：

<?xml version="1.0"?>
<configuration>
<configSections>
</configSections>
 <connectionStrings>
    <add name="XtopazConnectionString"
    connectionString="Data Source=.;AttachDbFilename=|DataDirectory|\Database\XTOPAZ.mdf;Initial Catalog=XTOPAZ;Integrated Security=True"
    providerName="System.Data.SqlClient" />
    </connectionStrings>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
    </startup>
</configuration>

并附加数据库功能：

public static void openConnect()
{
    try
    {
        if (File.Exists(Application.StartupPath + @"\Database\XTOPAZ.mdf"))
        {
            if (File.Exists(Application.StartupPath + @"\Database\XTOPAZ_log.ldf")) //delete current ldf file if it existed
            {
                File.Delete(Application.StartupPath + @"\Database\XTOPAZ_log.ldf");
            }
            string s = ConfigurationManager.ConnectionStrings["XtopazConnectionString"].ConnectionString;

            //Set full permisstion access for database file
            DirectoryInfo dInfo = new DirectoryInfo(Application.StartupPath + @"\Database\XTOPAZ.mdf");
            DirectorySecurity dSecurity = dInfo.GetAccessControl();
            dSecurity.AddAccessRule(new FileSystemAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), FileSystemRights.FullControl, InheritanceFlags.ObjectInherit | InheritanceFlags.ContainerInherit, PropagationFlags.NoPropagateInherit, AccessControlType.Allow));
            dInfo.SetAccessControl(dSecurity);
            dInfo.SetAccessControl(dSecurity);

            con.ConnectionString = s;
            con.Open();
        }
        else
        {
            Exception ex;
            ex = new Exception("Database file not found");
            throw ex;
        }
    }
    catch (Exception ex)
    {
        MessageBox.Show("Error occured when trying to connect to database\r\nDetail: " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
    }
}

我在Visual Studio 2012中使用InstallShield创建setup.exe并将其安装在其他计算机上（在我的C＃项目中，没有错误），我看到这个错误：

我该如何解决这个问题？我用谷歌搜索了它，但我无法找到解决方案。

Answer 1

此AttachDbFileName=方法仅与SQL Server Express 一起使用 - 因此您必须确保本地SQL Server Express实例存在并正在运行。

它的默认实例名称为.\SQLEXPRESS - 所以我建议您尝试使用此连接字符串：

<add name="XtopazConnectionString"
     connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database\XTOPAZ.mdf;Initial Catalog=XTOPAZ;Integrated Security=True"
     providerName="System.Data.SqlClient" />