LinqToSQL中的ConnectionString

Question

我用C＃編寫了一個示例，但是當我使用相對連接字符串時，它不會將數據保存到數據庫，甚至不會產生任何異常或錯誤：

private void AddButton_Click(object sender, EventArgs e)
{
    using (DataBaseModelDataContext DB = new DataBaseModelDataContext(@"Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\DataBase.mdf;Integrated Security=True;User Instance=True"))
    {
        Person person = new Person { Name=NameField.Text,LastName=LastNameField.Text};
        DB.Persons.InsertOnSubmit(person);
        DB.SubmitChanges();
        MessageBox.Show("Add successfully");
    }
}

但是當我更改連接字符串時，它起作用：

using (DataBaseDataContext DB = new DataBaseDataContext(@"Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\Herald\Documents\Visual Studio 2010\Projects\LinqToSql\LinqToSql\DataBase.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True")

但我需要使用相對連接字符串，我應該怎么做：

Answer 1

您需要獲取當前目錄並將其映射到字符串中。

path = New Uri(Assembly.GetExecutingAssembly().CodeBase).LocalPath;
path = IO.Path.GetDirectoryName(path);