Resolve Missing Assembly Errors When Using MATLAB Data API with .NET Framework

R2026b

Your .NET Framework application might throw a System.IO.FileNotFoundException for System.Memory or related assemblies at run time. This error occurs because the MATLAB^® Data API for .NET depends on assemblies that are not included with .NET Framework. This issue does not affect applications built with .NET 6.0 or higher.

To resolve this error, add the required NuGet packages to your project and configure assembly binding redirects.

Add NuGet Packages

In Visual Studio^®, right-click your project and select Manage NuGet Packages. On the Browse tab, search for and install the following packages:

• System.Memory (version 4.5.4 or later)

• System.Buffers (version 4.5.1 or later)

• System.Runtime.CompilerServices.Unsafe (version 5.0.0 or later)

Configure Assembly Binding Redirects

Open the App.config file in your project and add the following <runtime> element inside <configuration>. If your project does not have an App.config file, add one by right-clicking your project in Solution Explorer, selecting Add > New Item, and choosing Application Configuration File.

<runtime>
  <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
    <dependentAssembly>
      <assemblyIdentity name="System.Memory"
                        publicKeyToken="cc7b13ffcd2ddd51"
                        culture="neutral" />
      <bindingRedirect oldVersion="0.0.0.0-4.0.1.1"
                       newVersion="4.0.1.1" />
    </dependentAssembly>
    <dependentAssembly>
      <assemblyIdentity name="System.Buffers"
                        publicKeyToken="cc7b13ffcd2ddd51"
                        culture="neutral" />
      <bindingRedirect oldVersion="0.0.0.0-4.0.3.0"
                       newVersion="4.0.3.0" />
    </dependentAssembly>
    <dependentAssembly>
      <assemblyIdentity name="System.Runtime.CompilerServices.Unsafe"
                        publicKeyToken="b03f5f7f11d50a3a"
                        culture="neutral" />
      <bindingRedirect oldVersion="0.0.0.0-5.0.0.0"
                       newVersion="5.0.0.0" />
    </dependentAssembly>
  </assemblyBinding>
</runtime>

Verify Package Deployment

Rebuild your project and confirm that the following files appear in your output folder (bin\Debug or bin\Release):

• System.Memory.dll

• System.Buffers.dll

• System.Runtime.CompilerServices.Unsafe.dll

If these files are missing, verify that the NuGet packages installed correctly and that Copy Local is set to True for each package reference.