WPF中con.Open()报错，且因存在同名数据库，无法附加一个自动命名的数据库

[qq_40375549]

这是MainWondow.xaml中部分代码：[<Button Foreground="Black" Background="Transparent" BorderBrush="Transparent" Content=">> "
Margin="378,178,-6,-220" Click="CheckUser" RenderTransformOrigin="0.906,0.438" >]
这是MainWindow.xaml.cs中部分代码： private void CheckUser(object sender, RoutedEventArgs e)
{
mainDal check = new mainDal();
if (teacher.IsChecked.Equals(true))
{

if (check.Login(this.username.Text, this.password.Text, "teacher"))
{
adminBoard a = new adminBoard();
name = this.username.Text;
a.Name1 = name;
a.Show();
stdEnd.Begin();
}
else
MessageBox.Show("Invalid Password");
}
else if (student.IsChecked.Equals(true))
{
if (check.Login(this.username.Text, this.password.Text, "student"))
{
studentBoard s = new studentBoard();
s.Name1 = this.username.Text;
s.Show();
stdEnd.Begin();
}
else
MessageBox.Show("Invalid Password");
}
}

这是mainDal()函数：
public class mainDal
{
string path = @"Data Source=(LocalDB)\v11.0; AttachDbFilename=C:\Teacher-Student-Portal-a-WPF-Application-master\Dal\tsFacility.mdf;Integrated Security=True";
SqlConnection con;
public void makeConnection()
{
con = new SqlConnection(path);
con.Open();
}
}

[秋的红果实]

在vs里面，打开sql server对象资源管理器，右击你的（localdb），选择 属性，看看数据库默认存储位置在哪里，然后将数据库放到那里去 这样 链接串AttachDbFilename=C:\Teacher-Student-Portal-a-WPF-Application-master\Dal\tsFacility.mdf，一般写AttachDbFilename=tsFacility.mdf

[exception92]

Data Source 为数据库所在的服务器地址。网上找一段最简单的连接方式代码