ADO.NET | DataDirectory | 这在哪里记录？

|DataDirectory|

所以代替：

SqlConnection c = new SqlConnection (   @"Data Source=.SQLDB; AttachDbFilename=C:MyDBDatabase.mdf;Initial Catalog=Master");

您可以执行以下操作：

// Set |DataDirectory| valueAppDomain.CurrentDomain.SetData("DataDirectory", "C:myDB");// SQL Connection String with |DataDirectory| substitution stringSqlConnection c = new SqlConnection (   @"Data Source=.SQLDB; AttachDbFilename=|DataDirectory|Database.mdf;Initial Catalog=Master");