C＃.mdf连接失败

Question

我在VS 2013中面临以下问题

  

System.Data.dll中出现未处理的“System.Data.SqlClient.SqlException”类型异常

以下是代码：

SqlConnection myConnection = new SqlConnection("Data Source =.\\SQLEXPRESS; AttachDbFilename=|DataDirectory|\\Database1.mdf; Integrated Security = True; User Instance = True;");
myConnection.Open();

SqlCommand  myCommand = myConnection.CreateCommand();
myCommand.CommandType = CommandType.Text;
myCommand.CommandText = "SELECT * FROM Customer";

SqlDataAdapter myDataAdapter = new SqlDataAdapter(myCommand);

DataSet myDataSet = new DataSet();
myDataAdapter.Fill(myDataSet);

myConnection.Close();

foreach(DataRow myRow in myDataSet.Tables[0].Rows)
{
    Console.WriteLine(myRow["FirstName"]+" " +myRow["LastName"]);
}

Console.ReadLine();