Local Database doesn't save data.

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C#

WPF

database

Hello,

When I try to insert something into my Local Database (SQL Compact) it does add. But it doesn't save. I have tried serveral things. Here is my code:

Connection String

public static SqlCeConnection Connect()
{
    SqlCeConnection connection = new SqlCeConnection();
    connection.ConnectionString = @"Data Source=|DataDirectory|\Database\Database.sdf";
    connection.Open();

    return connection;
}

The "Add" Class.

public static void AddTodo(string title, string description, string content)
{
    SqlCeCommand command = new SqlCeCommand("insert into items (title, description, content) values (@Title, @Description, @Content)", Database.Connect());
    command.Parameters.Add(new SqlCeParameter("Title", title));
    command.Parameters.Add(new SqlCeParameter("Description", description));
    command.Parameters.Add(new SqlCeParameter("Content", content));
    command.ExecuteNonQuery();
    Database.Disconnect();
}

Last piece of code

private void addButton_Click(object sender, RoutedEventArgs e)
{
    TodoAdder.AddTodo(titleBox.Text, descriptionBox.Text, contentBox.Text);
}

When I rebuild database it deletes it. Or it never is in there.

Thanks in advance.

Updated question:
When I execute the insert query it does show up in the ListBox. But when I check my Database it is empty. Also, when I restart the program. It is empty again.