检测客户端或服务器模式

Question

I am building a Blazor application which can switch between client mode and server mode. Parts of the application work only in one or the other and need to have fallback code executed in that case.

Is there a good way to check for example if Mono is running or not?

Any suggestions?

Answer 1

Perhaps this can help you:

// Mono WebAssembly is running.
if (JSRuntime.Current is MonoWebAssemblyJSRuntime mono)
{
}
else
{
}

See also the instructions about BlazorDualMode which allows you to run your app in both modes as well as checking which mode is running.

Hope this helps.

Answer 2

使用RuntimeInformation.OSDescription

RuntimeInformation.OSDescription == "web"

Answer 3

Using the JSRuntime.Current is not reliable given it is null during startup. The following should work at anytime.

Type.GetType("Mono.Runtime") != null;

I add this class to the DI Container and thus can drive behavior with it.

  public class JsRuntimeLocation
  {
    public bool IsClientSide => HasMono;
    public bool IsServerSide => !HasMono;
    public bool HasMono => Type.GetType("Mono.Runtime") != null;
  }

Answer 4

It's now:

RuntimeInformation.ProcessArchitecture == Architecture.Wasm

Answer 5

这个答案是由微软在这里提供的。

RuntimeInformation.IsOSPlatform(OSPlatform.Create("WEBASSEMBLY"))