WPF - Access static class in different Namespace - wpf

Question

I have the config for my application in a static class:
namespace Program.Config
{
static Class AppConfig
{
...
}
}
Now, in my xaml I would like to access this config.
So, I added
xmlns:config="clr-namespace:Program.Config"
to my view which resides in Program.Views
However, accessing the AppConfig like
config:AppConfig.ConnectionConfig.conParam.ethPort
does not work.
What is the correct way to access members of a static class from a different namespace in WPF?
EDIT:
Ok, here comes an MWE:
MainWindow.xaml.cs:
using System.Threading;
using System.Windows;
using Program.ViewModels;
namespace Program
{
public partial class MainWindow : Window
{
public MainWindow()
{
MainVM vm = new MainVM();
DataContext = vm;
InitializeComponent();
}
}
}
`MainVM.cs
using Prism.Mvvm;
using System;
namespace Program.ViewModels
{
internal class MainVM : BindableBase
{
public MainVM()
{
}
}
}
`MainWindow.xaml
<Window x:Class="Program.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:config="clr-namespace:Program.Config"
mc:Ignorable="d"
Title="MainWindow" Height="700" Width="1000">
<DockPanel LastChildFill="False">
<Label Content="Port is:" />
<Label Content="{Binding config:AppConfig.ConnectionConfig.conParam.ethPort}" />
</DockPanel>
</Window>
Config.cs:
namespace Program
{
using Program.Config;
public struct ConnectionParameters
{
public int ethPort { get; set; }
public string ethIp { get; set; }
}
public static class AppConfig
{
public static ConnectionConfObj ConnectionConfig { get; set; }
static AppConfig()
{
ConnectionConfig = new ConnectionConfObj();
}
}
}
namespace Program.Config
{
public abstract class ConfigBase
{
public string filepath { get; set; }
}
public class ConnectionConfObj : ConfigBase
{
public ConnectionParameters conParam { get; set; }
public ConnectionConfObj()
{
ConnectionParameters _conParam = new ConnectionParameters();
_conParam.ethPort = 8;
conParam = _conParam;
}
}
}
In the scope of the program, the structure of the config makes sense like this, since I read multiple configs from different sources and want to present them in one AppConfig for the program.

Answer 1

To access a static class member (including enum values) in your XAML, use the x:Static markup extension as follows: {x:Static nmspc:ClassName.MemberName} (or {x:Static nmspc:EnumTypeName.EnumValueName} -- enum values are really static members of a static class). You get a namespace prefix, one class name optionally preceded by intermediate namespaces, and one member name, and that's all it does. If you need a property of MemberName, make the static reference the Source of a Binding. A Binding can have a path to a property of a property:
<Label
Content="{Binding conParam.ethPort, Source={x:Static config:AppConfig.ConnectionConfig)}"
/>