Process.GetCurrentProcess().ProcessName is throwing InvalidOperationException for Blazor Webassembly project

[sonupmandal]

I have created a simple Blazor Webassembly application in which
Target Framework : .NET Standard 2.1

Contents of Counter.razor file

@page "/counter"

<h1>Counter</h1>

<p>Current count: @currentCount</p>

<button class="btn btn-primary" @onclick="IncrementCount">Click me</button>

@code {
    private int currentCount = 0;

    private void IncrementCount()
    {
        var CurrentProcess = System.Diagnostics.Process.GetCurrentProcess();
        var pname = CurrentProcess.ProcessName;

        currentCount++;
    }
}

Upon running this application, a browser window opens, when i press click me button, i end up getting this exception.
crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
Unhandled exception rendering component: Process has exited or is inaccessible, so the requested information is not available.
System.InvalidOperationException: Process has exited or is inaccessible, so the requested information is not available.
at System.Diagnostics.Process.get_ProcessName () <0x2d34700 + 0x0004a> in :0
at WebApplication1.Pages.Counter.IncrementCount () <0x2d33d80 + 0x0000c> in :0
at Microsoft.AspNetCore.Components.EventCallbackWorkItem.InvokeAsync[T] (System.MulticastDelegate delegate, T arg) <0x2d07e80 + 0x0005e> in :0
at Microsoft.AspNetCore.Components.EventCallbackWorkItem.InvokeAsync (System.Object arg) <0x2d07bc0 + 0x0000a> in :0
at Microsoft.AspNetCore.Components.ComponentBase.Microsoft.AspNetCore.Components.IHandleEvent.HandleEventAsync (Microsoft.AspNetCore.Components.EventCallbackWorkItem callback, System.Object arg) <0x2d07b28 + 0x0000a> in :0
at Microsoft.AspNetCore.Components.EventCallback.InvokeAsync (System.Object arg) <0x2d076f0 + 0x00040> in :0
at Microsoft.AspNetCore.Components.RenderTree.Renderer.DispatchEventAsync (System.UInt64 eventHandlerId, Microsoft.AspNetCore.Components.RenderTree.EventFieldInfo fieldInfo, System.EventArgs eventArgs) <0x2d06ce0 + 0x000a8> in :0

Can someone assist me why i am getting this error ? Is Process.GetCurrentProcess().ProcessName API not supported with Blazor webassembly app ?

[sonupmandal]

my simple blazor app repo link : https://github.com/sonupmandal/WebApplication.git

[davidfowl]

What would you expect the process name to return when running in the browser sandbox?

[En3Tho]

There is an answer from @danroth27 in your previous issue that explains the exception.

[ghost]

Tagging subscribers to this area: @dotnet/area-system-diagnostics-process
See info in area-owners.md if you want to be subscribed.

Issue Details

---

I have created a simple Blazor Webassembly application in which
Target Framework : .NET Standard 2.1

Contents of Counter.razor file

@page "/counter"

<h1>Counter</h1>

<p>Current count: @currentCount</p>

<button class="btn btn-primary" @onclick="IncrementCount">Click me</button>

@code {
    private int currentCount = 0;

    private void IncrementCount()
    {
        var CurrentProcess = System.Diagnostics.Process.GetCurrentProcess();
        var pname = CurrentProcess.ProcessName;

        currentCount++;
    }
}

Upon running this application, a browser window opens, when i press click me button, i end up getting this exception.
crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
Unhandled exception rendering component: Process has exited or is inaccessible, so the requested information is not available.
System.InvalidOperationException: Process has exited or is inaccessible, so the requested information is not available.
at System.Diagnostics.Process.get_ProcessName () <0x2d34700 + 0x0004a> in :0
at WebApplication1.Pages.Counter.IncrementCount () <0x2d33d80 + 0x0000c> in :0
at Microsoft.AspNetCore.Components.EventCallbackWorkItem.InvokeAsync[T] (System.MulticastDelegate delegate, T arg) <0x2d07e80 + 0x0005e> in :0
at Microsoft.AspNetCore.Components.EventCallbackWorkItem.InvokeAsync (System.Object arg) <0x2d07bc0 + 0x0000a> in :0
at Microsoft.AspNetCore.Components.ComponentBase.Microsoft.AspNetCore.Components.IHandleEvent.HandleEventAsync (Microsoft.AspNetCore.Components.EventCallbackWorkItem callback, System.Object arg) <0x2d07b28 + 0x0000a> in :0
at Microsoft.AspNetCore.Components.EventCallback.InvokeAsync (System.Object arg) <0x2d076f0 + 0x00040> in :0
at Microsoft.AspNetCore.Components.RenderTree.Renderer.DispatchEventAsync (System.UInt64 eventHandlerId, Microsoft.AspNetCore.Components.RenderTree.EventFieldInfo fieldInfo, System.EventArgs eventArgs) <0x2d06ce0 + 0x000a8> in :0

Can someone assist me why i am getting this error ? Is Process.GetCurrentProcess().ProcessName API not supported with Blazor webassembly app ?

Author:	sonupmandal
Assignees:	-
Labels:	area-System.Diagnostics.Process, untriaged
Milestone:	-

[ghost]

Tagging subscribers to 'arch-wasm': @lewing
See info in area-owners.md if you want to be subscribed.

Issue Details

---

I have created a simple Blazor Webassembly application in which
Target Framework : .NET Standard 2.1

Contents of Counter.razor file

@page "/counter"

<h1>Counter</h1>

<p>Current count: @currentCount</p>

<button class="btn btn-primary" @onclick="IncrementCount">Click me</button>

@code {
    private int currentCount = 0;

    private void IncrementCount()
    {
        var CurrentProcess = System.Diagnostics.Process.GetCurrentProcess();
        var pname = CurrentProcess.ProcessName;

        currentCount++;
    }
}

Upon running this application, a browser window opens, when i press click me button, i end up getting this exception.
crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
Unhandled exception rendering component: Process has exited or is inaccessible, so the requested information is not available.
System.InvalidOperationException: Process has exited or is inaccessible, so the requested information is not available.
at System.Diagnostics.Process.get_ProcessName () <0x2d34700 + 0x0004a> in :0
at WebApplication1.Pages.Counter.IncrementCount () <0x2d33d80 + 0x0000c> in :0
at Microsoft.AspNetCore.Components.EventCallbackWorkItem.InvokeAsync[T] (System.MulticastDelegate delegate, T arg) <0x2d07e80 + 0x0005e> in :0
at Microsoft.AspNetCore.Components.EventCallbackWorkItem.InvokeAsync (System.Object arg) <0x2d07bc0 + 0x0000a> in :0
at Microsoft.AspNetCore.Components.ComponentBase.Microsoft.AspNetCore.Components.IHandleEvent.HandleEventAsync (Microsoft.AspNetCore.Components.EventCallbackWorkItem callback, System.Object arg) <0x2d07b28 + 0x0000a> in :0
at Microsoft.AspNetCore.Components.EventCallback.InvokeAsync (System.Object arg) <0x2d076f0 + 0x00040> in :0
at Microsoft.AspNetCore.Components.RenderTree.Renderer.DispatchEventAsync (System.UInt64 eventHandlerId, Microsoft.AspNetCore.Components.RenderTree.EventFieldInfo fieldInfo, System.EventArgs eventArgs) <0x2d06ce0 + 0x000a8> in :0

Can someone assist me why i am getting this error ? Is Process.GetCurrentProcess().ProcessName API not supported with Blazor webassembly app ?

Author:	sonupmandal
Assignees:	-
Labels:	arch-wasm, area-System.Diagnostics.Process, untriaged
Milestone:	-

[adamsitnik]

Can someone assist me why i am getting this error ? Is Process.GetCurrentProcess().ProcessName API not supported with Blazor webassembly app ?

Entire System.Diagnostics.Process is not supported for WASM (#41694). We have introduced new analysers that produce warnings at compile time (.NET 6) in order to avoid such situations.