无法通过 XamlReader 加载 XAML

Question

I have a WPF application. Source is here . My requirement is, if the use click the Save button, I want to capture the current window's XAML including inputs and save it to the database. After that in application, somewhere else, I need to load back that window from DB. I tried this using XamlWriter . Its working fine if I didnt name the controls in Xaml. If I add x:Name attribute in Xaml for any control, it gives exception as shown below. Please help.

Answer 1

if you put a Console.WriteLine(window); behind var window = XamlWriter.Save(this); like so:

 var window = XamlWriter.Save(this);
 Console.WriteLine(window);

you get this printed:

<MainWindow Title="MainWindow" Width="525" Height="350" Visibility="Visible" xmlns="clr-namespace:XamlReaderSample;assembly=XamlReaderSample" xmlns:av="http://schemas.microsoft.com/winfx/2006/xaml/presentation"><av:Grid><av:StackPanel Margin="0,10,0,0">
<av:TextBox Width="100" xml:space="preserve" /><av:TextBox Width="100" Margin="0,10,0,0" xml:space="preserve" />
<av:Button Name="btnSave" Width="80" Margin="0,10,0,0">Save</av:Button> 
</av:StackPanel></av:Grid></MainWindow>

within this code there is a button named btnSave. in the rest of your code you try to create a new window from that code. once you try to create that window, you have a 2nd button (besides the one you did click) with that name. and that causes the error.

Answer 2

I tried like this and it worked.

var win = new Window();
win.Name = this.Name;
win.Content = this.Content;
var xaml = XamlWriter.Save(win);

But still I cant do like this if the window have a DataGrid in it, since DataGrid doesnt support serialization. Need to find out some other method.