使用的SqlConnection，卻找不到SQL數據庫

Question

我的數據庫佈局看起來像這樣

-App_Data 
    -Database.mdf 
     -Database_log.ldf 

，這是我的代碼

  string strConn = "Data Source=.\\SQLEXPRESS;Initial Catalog=Database;Integrated Security=True;"; 
     SqlConnection myConn = new SqlConnection(strConn); 
     myConn.Open(); 
     String strSQL = "INSERT INTO dbo.member (Id, Password, Name, Jobtitle,level,phone) VALUES ('a01', '123', 'bobo', 'Tester','1','010919')"; 
     SqlCommand myCommand = new SqlCommand(strSQL, myConn); 
     myConn.Close(); 

，但是當我在瀏覽器中測試，將發送錯誤信息，並在此代碼停止「myConn.Open（）;」找不到服務器

這是怎麼回事？

Answer 1

變化

string strConn = "Data Source=.\\SQLEXPRESS;Initial Catalog=Database;Integrated Security=True;"; 

到

string strConn = @"Data Source=.\SQLExpress;Initial Catalog=Database;Integrated Security=True"; 

Answer 2

Attach a database file, located in the data directory, on connect to a local SQL Server Express instance

Server=.\SQLExpress;AttachDbFilename=|DataDirectory|dbfilename.mdf;Database=dbname; 
Trusted_Connection=Yes; 

因此您的連接字符串應該是類似下面，更換數據庫名稱corectly

string strConn =@"Server=.\SQLExpress;AttachDbFilename=|DataDirectory|Database.mdf;Database=dbname; Trusted_Connection=Yes;"; 

using (SqlConnection myConn = new SqlConnection(strConn)) 
{ 
    string strSQL = "INSERT INTO dbo.member (Id, Password, Name, Jobtitle,level,phone) VALUES ('a01', '123', 'bobo', 'Tester','1','010919')"; 
    myConn.Open(); 
    using(SqlCommand myCommand = new SqlCommand(strSQL, myConn)) 
    { 
    myCommand.ExecuteNonQuery(); // you haven't execute the insert 
    } 
}