如何使用LocalDB(.MDF)在其他计算机上运行已发布的应用程序?

时间:2015-07-01 12:45:15

标签: c# sql connection-string localdb mdf

我无法将应用程序开发为在其他计算机上运行。此应用程序使用位于同一项目目录中的本地数据库(。mdf)

当我发布应用程序并在另一台计算机上安装时,它会正确安装,但是当我运行时会出现与数据库连接相关的错误。

以下是ConnectionStringsapp.config的代码。

    <?xml version="1.0"?>
<configuration>
  <system.windows.forms jitDebugging="true" />
  <configSections>
  </configSections>
  <connectionStrings>
    <clear />
    <add name="ConexaoBD" connectionString="Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\bd_Cadastro.mdf;Integrated Security=True;Connect Timeout=30" providerName="System.Data.SqlClient" />
  </connectionStrings>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0" />
  </startup>
</configuration>

这是我的班级中连接到数据库的ConnectionString

        private string str_conexao = ConfigurationManager.ConnectionStrings["ConexaoBD"].ConnectionString;

这是我在另一台计算机上运行应用程序时收到的错误消息:

************** Exception Text **************
System.ArgumentException: Invalid value for key 'attachdbfilename'.
   at EVO_Next_List.cls_Conexao.ExecutarDataSet(String str_sql)
   at EVO_Next_List.frmPrincipal.CarregaRegistros()
   at EVO_Next_List.frmPrincipal.frmPrincipal_Load(Object sender, EventArgs e)
   at System.Windows.Forms.Form.OnLoad(EventArgs e)
   at MetroFramework.Forms.MetroForm.OnLoad(EventArgs e)
   at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
   at System.Windows.Forms.Control.CreateControl()
   at System.Windows.Forms.Control.WmShowWindow(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.Form.WmShowWindow(Message& m)
   at System.Windows.Forms.Form.WndProc(Message& m)
   at MetroFramework.Forms.MetroForm.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

有没有办法让应用程序识别任何计算机上的.mdf文件?

2 个答案:

答案 0 :(得分:1)

您需要从远程计算机上看到您的数据库,您只需将连接字符串更改为

  

Data Source = server; Initial Catalog = bd_Cadastro.mdf; Integrated Security = True

您还需要确保运行该应用的用户在本地SQL中具有有效登录信息,否则您需要将 Integrated Security = True 更改为

  

用户ID = user;密码= passwd

答案 1 :(得分:0)

这就是EVO_Next_List.cls_Conexao.ExecutarDataSet()

里面的内容
 public DataSet ExecutarDataSet(string str_sql)
            {
                SqlConnection Conn = new SqlConnection(); // Faz Conexão;
                SqlCommand cmdComando = new SqlCommand(); // Recebe o comando.
                SqlDataAdapter DataAdt = new SqlDataAdapter(); // Preenche o DataTable.
                DataSet DS = new DataSet();

                try
                {
                    Conn = AbrirBanco();
                    cmdComando.CommandText = str_sql;
                    cmdComando.CommandType = CommandType.Text;
                    cmdComando.Connection = Conn;

                    DataAdt.SelectCommand = cmdComando;
                    DataAdt.Fill(DS); // Preenche a Datatable

                    return (DS);
                }

                catch (Exception Erro)
                { throw Erro; }

                finally
                { Conn.Close(); }
            }