Application.LocalUserAppDataPath for .net 3.1 core wpf application

Question

In a Windows Forms application I get the following path using Application.LocalUserAppDataPath:
C:\Users\<user>\AppData\Local\<company>\<app>\<version>

In my .net core 3.1 WPF application, I use Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);

However, this only returns:
C:\Users\<user>\AppData\Local

I am missing the trailing part of the path:
\<company>\<app>\<version>

How do I get the full path as in a Windows Forms app?

Thanks for any hints.

Answer 1

In WinForms, they are added to the Local AppData path from :
Application.CompanyName, Application.ProductName, Application.ProductVersion

So you can add them from the equivalent properties, like (tested with WPF .NET Core 5) =>

         System.Reflection.AssemblyCompanyAttribute companyAttribute = (System.Reflection.AssemblyCompanyAttribute)System.Reflection.AssemblyCompanyAttribute.GetCustomAttribute(System.Reflection.Assembly.GetExecutingAssembly(), typeof(System.Reflection.AssemblyCompanyAttribute));
        string sCompanyName = companyAttribute.Company;
        string sProductName = System.Reflection.Assembly.GetExecutingAssembly().GetName().Name.ToString();
        string sProductVersion = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString();

Answer 2

Thank you for your answer.

Do I have to add the properties to AssemblyInfo.cs? Or do I have to add them like:

string path = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) + "\<CompanyName>\<ProductName>\"<ProductVersion";

Answer 3

You can use Application.LocalUserAppDataPath for .net 3.1 core wpf application by below steps:

Step 1: Add <UseWindowsForms>true</UseWindowsForms> in PropertyGroup for project's csproj file
Step 2: Right click project's Dependenices >Choose Add COM Reference...> Select System_Windows_Forms and click OK , below is my .csproj code

<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">  
  
  <PropertyGroup>  
    <OutputType>WinExe</OutputType>  
    <TargetFramework>netcoreapp3.1</TargetFramework>  
    <UseWindowsForms>true</UseWindowsForms>  
    <UseWPF>true</UseWPF>  
    <Company>MyCompanyH</Company>  
    <Authors>Daisy</Authors>  
    <PackageId>MyProID</PackageId>  
  </PropertyGroup>  
  
  <ItemGroup>  
    <COMReference Include="{215d64d2-031c-33c7-96e3-61794cd1ee61}">  
      <WrapperTool>tlbimp</WrapperTool>  
      <VersionMinor>4</VersionMinor>  
      <VersionMajor>2</VersionMajor>  
      <Guid>215d64d2-031c-33c7-96e3-61794cd1ee61</Guid>  
    </COMReference>  
  </ItemGroup>  
  
</Project>  

Then you can use it in project like :

private void Button_Click(object sender, RoutedEventArgs e)  
        {  
            string str = System.Windows.Forms.Application.UserAppDataPath;  
            MessageBox.Show(str);  
        }  

The MessageBox result is:

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