.net 8 add System.Windows.PresentationCore dll and using System.Windows.Media namespace

1.add reference,C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\8.0.11\ref\net8.0\PresentationCore.dll

2.Source code

using System;
using System.Windows;
using System.Windows.Media;

namespace ConsoleApp19
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello, World!");
            string str = Guid.NewGuid().ToString();
            PrintTextFontsizeWidth(str, "Arial", 120);
        }

        static void PrintTextFontsizeWidth(string str, string fontFamilyName, int fontSize)
        {
            FormattedText formattedText = new FormattedText(
            str,
            System.Globalization.CultureInfo.CurrentCulture,
            FlowDirection.LeftToRight,
            new Typeface(fontFamilyName),
            fontSize,
            Brushes.Black, 1.25);
            Console.WriteLine($"{str}\nWidth:{formattedText.Width}\nHeight:{formattedText.Height}");
        }
    }
}

 

3.Run and throw exception

System.BadImageFormatException
  HResult=0x80131058
  Message=Could not load file or assembly 'PresentationCore, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Reference assemblies cannot be loaded for execution. (0x80131058)
  Source=ConsoleApp19
  StackTrace:
   at ConsoleApp19.Program.PrintTextFontsizeWidth(String str, String fontFamilyName, Int32 fontSize) in D:\C\ConsoleApp19\ConsoleApp19\Program.cs:line 26
   at ConsoleApp19.Program.Main(String[] args) in D:\C\ConsoleApp19\ConsoleApp19\Program.cs:line 13

Inner Exception 1:
BadImageFormatException: Cannot load a reference assembly for execution.

 

 

4.Edit csproj file

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net8.0</TargetFramework>
    <UseWPF>true</UseWPF>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
  </PropertyGroup>

  <ItemGroup>
    <Reference Include="PresentationCore">
      <HintPath>C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\8.0.11\ref\net8.0\PresentationCore.dll</HintPath>
    </Reference>
  </ItemGroup>

</Project>

 

5.Run and errors

The target platform must be set to Windows (usually by including '-windows' in the TargetFramework property) when using Windows Forms or WPF, or referencing projects or packages that do so.

 

 

6.Edit csproj file again,and the ultimate edition.

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net8.0-windows</TargetFramework>
    <UseWPF>true</UseWPF>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
  </PropertyGroup>

  <ItemGroup>
    <Reference Include="PresentationCore">
      <HintPath>C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\8.0.11\ref\net8.0\PresentationCore.dll</HintPath>
    </Reference>
  </ItemGroup>

</Project>

 

 

7.Run