How to Add Font File to Stimulsoft report from embedded font in C# WPF

Is your issue not that you're using the "font name" rather than the "file name" here?:

StiFontCollection.AddFontFile(@"pack://application:,,,/FNT/#B Titr");

If you try this does it work?

StiFontCollection.AddFontFile(@"pack://application:,,,/FNT/BTITRBD.TTF");

If BTITRBD.TTF has it's Build Action set to "Resource" and not "Embedded Resource" I'd expect this to work.

Just for your info GetManifestResourceStream is used to get Embedded Resources by their resource name. That method returns a stream to the Embedded Resource's data that you can read from.

As Paul-5034 said, you could set Build Action property of BTITRBD.TTF to Resource. And you can try the following code if it is useful to you. You could also try to refer here.

The code of xaml:

<StackPanel Name="sp">  
        <TextBlock Text="Loading..." FontSize="30" />  
        <TextBlock Text="Loading..." FontSize="30" FontFamily="./FNT/#Al Qalam Quran Majeed Web Regular"/>  
        <TextBlock Text="Loading..." FontSize="30" FontFamily="./FNT/#Amiri Regular"/>  

        <TextBlock Name="tb" Text="Loading...." FontSize="30"/>  
</StackPanel>  

The code of xaml.cs:

public partial class MainWindow : Window  
  {  
    public MainWindow()  
    {  
      InitializeComponent();  
      tb.FontFamily = new FontFamily(new Uri("pack://application:,,,/"), "./FNT/#Amiri Regular");  
    }  
  }  

The picture of result:

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