Well, I tried to implement this function
```
static void DisplayMessage()
{
string userMessage = string.Format("1000 in hex is {0:x}", 1000);
System.Windows.MessageBox.Show(userMessage);
}
```
But to compile and use this function i need to add a reference to PresentationFramework. I use Rider, i don't know how to add a reference correctly, because i see this when i want to add a reference.
Then, I tried to add reference on this file
```
C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\5.0.10\PresentationFramework.dll
```
And now it builds my code but also catches unhandled exeception.
```
using System;
namespace LearningSharp
{
class Program
{
static void Main(string[] args)
{
DisplayMessage();
}
static void DisplayMessage()
{
string userMessage = string.Format("1000 in hex is {0:x}", 1000);
System.Windows.MessageBox.Show(userMessage);
}
}
}
```
Unhandled exception. System.IO.FileLoadException: Could not load file or assembl
y 'WindowsBase, Version=5.0.10.0, Culture=neutral, PublicKeyToken=31bf3856ad364e
35'. The located assembly's manifest definition does not match the assembly refe
rence. (0x80131040)
File name: 'WindowsBase, Version=5.0.10.0, Culture=neutral, PublicKeyToken=31bf3
856ad364e35'
at System.Windows.MessageBox.ShowCore(IntPtr owner, String messageBoxText, St
ring caption, MessageBoxButton button, MessageBoxImage icon, MessageBoxResult de
faultResult, MessageBoxOptions options)
at System.Windows.MessageBox.Show(String messageBoxText)
at LearningSharp.Program.DisplayMessage() in C:\Users\dchal\RiderProjects\Lea
rningSharp\LearningSharp\Program.cs:line 16
at LearningSharp.Program.Main(String[] args) in C:\Users\dchal\RiderProjects\
LearningSharp\LearningSharp\Program.cs:line 9
Process finished with exit code -532,462,766.
So how make this code work? How to add a reference in Rider? Can I do it simplier than boring finding dll in my files? I've created a solution like this (You may say that i need to use another template, but i want to learn how to add references and make code work properly)
And this is my csproj (i've deleted a references which i tried to add above)
