Microsoft.Interop.JavaScript.JSImportGenerator by Microsoft

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• Details
  • Info
  • Original Readme
  • About
• How to use
  • Example ( source csproj, source files )
  • Generated Files
• Usefull
  • Download Example (.NET C# )
  • Share Microsoft.Interop.JavaScript.JSImportGenerator
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Nuget / site data

Details

Info

info

Name: Microsoft.Interop.JavaScript.JSImportGenerator

Author: Microsoft

NuGet: **

You can find more details at

Source :

Original Readme

note

About

note

Generating partial JSimport / JSExport in C# form

How to use

Example ( source csproj, source files )

CSharp Project

This is the CSharp Project that references Microsoft.Interop.JavaScript.JSImportGenerator

<Project Sdk="Microsoft.NET.Sdk.BlazorWebAssembly">

  <PropertyGroup>
    <TargetFramework>net7.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
    <ServiceWorkerAssetsManifest>service-worker-assets.js</ServiceWorkerAssetsManifest>
    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="7.0.0" />
    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="7.0.0" PrivateAssets="all" />
  </ItemGroup>

  <ItemGroup>
    <ServiceWorker Include="wwwroot\service-worker.js" PublishedContent="wwwroot\service-worker.published.js" />
  </ItemGroup>
    <PropertyGroup>
        <EmitCompilerGeneratedFiles>true</EmitCompilerGeneratedFiles>
        <CompilerGeneratedFilesOutputPath>$(BaseIntermediateOutputPath)\GX</CompilerGeneratedFilesOutputPath>
    </PropertyGroup>

</Project>

Program.cs

This is the use of Microsoft.Interop.JavaScript.JSImportGenerator in Program.cs

using Microsoft.AspNetCore.Components.Web;
using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
using TestBlazor;

var builder = WebAssemblyHostBuilder.CreateDefault(args);
builder.RootComponents.Add<App>("#app");
builder.RootComponents.Add<HeadOutlet>("head::after");

builder.Services.AddScoped(sp => new HttpClient { BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) });

await builder.Build().RunAsync();

index.razor.cs

This is the use of Microsoft.Interop.JavaScript.JSImportGenerator in index.razor.cs

using System.Runtime.InteropServices.JavaScript;
using System.Runtime.Versioning;

namespace TestBlazor.Pages;

[SupportedOSPlatform("browser")]
public partial class CallJavaScript1
{
    [JSImport("getMessage", "CallJavaScript1")]
    internal static partial string GetWelcomeMessage(string s);
    [JSExport]
    internal static string GetMessageFromDotnet(string s)
    {
        return " GetMessageFromDotnet  => " +  s;
    }
}

Index.razor

This is the use of Microsoft.Interop.JavaScript.JSImportGenerator in Index.razor

@page "/"

<div class="card" style="width:22rem">
    <div class="card-body">
        <h3 class="card-title">@Title</h3>
        <p class="card-text">@ChildContent</p>
        <button @onclick="OnYes">Yes! @i  @s</button>
    </div>
</div>

@code {
    int i =0;
    string s = "aa";
    [Parameter]
    public RenderFragment? ChildContent { get; set; }

    [Parameter]
    public string? Title { get; set; }

    protected override async Task OnInitializedAsync()
    {
        await JSHost.ImportAsync("CallJavaScript1",
           "../Pages/index.razor.js");
        await base.OnInitializedAsync();
    }
    private void OnYes()
    {
        s = CallJavaScript1.GetWelcomeMessage("number "+ i);
        Console.WriteLine("Write to the console in C#! 'Yes' button selected.");
        i++;
    }
}

index.razor.js

This is the use of Microsoft.Interop.JavaScript.JSImportGenerator in index.razor.js

export function getMessage(fromCSharp) {
    console.log('test');
    setMessage(' JavaSCript getMessage =>'+ fromCSharp);
    return "andrei";
}


export async function setMessage(message) {
    const { getAssemblyExports } = await globalThis.getDotnetRuntime(0);
    var exports = await getAssemblyExports("TestBlazor.dll");
    var fromJScript = " Javascript setMessage =>" + message;
    console.log(exports.TestBlazor.Pages.CallJavaScript1.GetMessageFromDotnet(fromJScript));
}

Generated Files

Those are taken from $(BaseIntermediateOutputPath)\GX

App_razor.g.cs

#pragma checksum "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\App.razor" "{8829d00f-11b8-4213-878b-770e8597ac16}" "ca69fbc161c0130d6d7831728befc975abb17b04491a271bc49266261055543b"
// <auto-generated/>
#pragma warning disable 1591
namespace TestBlazor
{
    #line default
    using global::System;
    using global::System.Collections.Generic;
    using global::System.Linq;
    using global::System.Threading.Tasks;
    using global::Microsoft.AspNetCore.Components;
#nullable restore
#line (1,2)-(2,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using System.Net.Http

#nullable disable
    ;
#nullable restore
#line (2,2)-(3,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using System.Net.Http.Json

#nullable disable
    ;
#nullable restore
#line (3,2)-(4,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using Microsoft.AspNetCore.Components.Routing

#nullable disable
    ;
#nullable restore
#line (4,2)-(5,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using Microsoft.AspNetCore.Components.Web

#nullable disable
    ;
#nullable restore
#line (5,2)-(6,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using Microsoft.AspNetCore.Components.WebAssembly.Http

#nullable disable
    ;
#nullable restore
#line (6,2)-(7,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using Microsoft.JSInterop

#nullable disable
    ;
#nullable restore
#line (7,2)-(8,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using TestBlazor

#nullable disable
    ;
#nullable restore
#line (8,2)-(9,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using System.Runtime.Versioning;

#nullable disable
#nullable restore
#line (9,2)-(9,50) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using System.Runtime.InteropServices.JavaScript;

#line default
#line hidden
#nullable disable
    #nullable restore
    public partial class App : global::Microsoft.AspNetCore.Components.ComponentBase
    #nullable disable
    {
        #pragma warning disable 1998
        protected override void BuildRenderTree(global::Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder __builder)
        {
            __builder.OpenComponent<global::Microsoft.AspNetCore.Components.Routing.Router>(0);
            __builder.AddAttribute(1, "AppAssembly", (object)(global::Microsoft.AspNetCore.Components.CompilerServices.RuntimeHelpers.TypeCheck<global::System.Reflection.Assembly>(
#nullable restore
#line (1,23)-(1,43) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\App.razor"
typeof(App).Assembly

#line default
#line hidden
#nullable disable
            )));
            __builder.AddAttribute(2, "Found", (global::Microsoft.AspNetCore.Components.RenderFragment<Microsoft.AspNetCore.Components.RouteData>)((routeData) => (__builder2) => {
                __builder2.OpenComponent<global::Microsoft.AspNetCore.Components.RouteView>(3);
                __builder2.AddAttribute(4, "RouteData", (object)(global::Microsoft.AspNetCore.Components.CompilerServices.RuntimeHelpers.TypeCheck<global::Microsoft.AspNetCore.Components.RouteData>(
#nullable restore
#line (3,32)-(3,41) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\App.razor"
routeData

#line default
#line hidden
#nullable disable
                )));
                __builder2.AddAttribute(5, "DefaultLayout", (object)(global::Microsoft.AspNetCore.Components.CompilerServices.RuntimeHelpers.TypeCheck<global::System.Type>(
#nullable restore
#line (3,59)-(3,77) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\App.razor"
typeof(MainLayout)

#line default
#line hidden
#nullable disable
                )));
                __builder2.CloseComponent();
                __builder2.AddMarkupContent(6, "\r\n        ");
                __builder2.OpenComponent<global::Microsoft.AspNetCore.Components.Routing.FocusOnNavigate>(7);
                __builder2.AddAttribute(8, "RouteData", (object)(global::Microsoft.AspNetCore.Components.CompilerServices.RuntimeHelpers.TypeCheck<global::Microsoft.AspNetCore.Components.RouteData>(
#nullable restore
#line (4,38)-(4,47) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\App.razor"
routeData

#line default
#line hidden
#nullable disable
                )));
                __builder2.AddAttribute(9, "Selector", (object)("h1"));
                __builder2.CloseComponent();
            }
            ));
            __builder.AddAttribute(10, "NotFound", (global::Microsoft.AspNetCore.Components.RenderFragment)((__builder2) => {
                __builder2.OpenComponent<global::Microsoft.AspNetCore.Components.Web.PageTitle>(11);
                __builder2.AddAttribute(12, "ChildContent", (global::Microsoft.AspNetCore.Components.RenderFragment)((__builder3) => {
                    __builder3.AddContent(13, "Not found");
                }
                ));
                __builder2.CloseComponent();
                __builder2.AddMarkupContent(14, "\r\n        ");
                __builder2.OpenComponent<global::Microsoft.AspNetCore.Components.LayoutView>(15);
                __builder2.AddAttribute(16, "Layout", (object)(global::Microsoft.AspNetCore.Components.CompilerServices.RuntimeHelpers.TypeCheck<global::System.Type>(
#nullable restore
#line (8,30)-(8,48) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\App.razor"
typeof(MainLayout)

#line default
#line hidden
#nullable disable
                )));
                __builder2.AddAttribute(17, "ChildContent", (global::Microsoft.AspNetCore.Components.RenderFragment)((__builder3) => {
                    __builder3.AddMarkupContent(18, "<p role=\"alert\">Sorry, there\'s nothing at this address.</p>");
                }
                ));
                __builder2.CloseComponent();
            }
            ));
            __builder.CloseComponent();
        }
        #pragma warning restore 1998
    }
}
#pragma warning restore 1591

MainLayout_razor.g.cs

#pragma checksum "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\MainLayout.razor" "{8829d00f-11b8-4213-878b-770e8597ac16}" "ae5700b58f509b241d54e7cc9392df00c78fe49dc34536d713dcbb68e7b415a2"
// <auto-generated/>
#pragma warning disable 1591
namespace TestBlazor
{
    #line default
    using global::System;
    using global::System.Collections.Generic;
    using global::System.Linq;
    using global::System.Threading.Tasks;
    using global::Microsoft.AspNetCore.Components;
#nullable restore
#line (1,2)-(2,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using System.Net.Http

#nullable disable
    ;
#nullable restore
#line (2,2)-(3,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using System.Net.Http.Json

#nullable disable
    ;
#nullable restore
#line (3,2)-(4,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using Microsoft.AspNetCore.Components.Routing

#nullable disable
    ;
#nullable restore
#line (4,2)-(5,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using Microsoft.AspNetCore.Components.Web

#nullable disable
    ;
#nullable restore
#line (5,2)-(6,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using Microsoft.AspNetCore.Components.WebAssembly.Http

#nullable disable
    ;
#nullable restore
#line (6,2)-(7,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using Microsoft.JSInterop

#nullable disable
    ;
#nullable restore
#line (7,2)-(8,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using TestBlazor

#nullable disable
    ;
#nullable restore
#line (8,2)-(9,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using System.Runtime.Versioning;

#nullable disable
#nullable restore
#line (9,2)-(9,50) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using System.Runtime.InteropServices.JavaScript;

#line default
#line hidden
#nullable disable
    #nullable restore
    public partial class MainLayout : LayoutComponentBase
    #nullable disable
    {
        #pragma warning disable 1998
        protected override void BuildRenderTree(global::Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder __builder)
        {
            __builder.OpenElement(0, "main");
            __builder.AddContent(1, 
#nullable restore
#line (4,6)-(4,10) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\MainLayout.razor"
Body

#line default
#line hidden
#nullable disable
            );
            __builder.CloseElement();
        }
        #pragma warning restore 1998
    }
}
#pragma warning restore 1591

Pages_Index_razor.g.cs

#pragma checksum "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\Pages\Index.razor" "{8829d00f-11b8-4213-878b-770e8597ac16}" "aa041de1d9d3922f2df558b4a08272ee907b58c89f74ea567a271428b96a1f4e"
// <auto-generated/>
#pragma warning disable 1591
namespace TestBlazor.Pages
{
    #line default
    using global::System;
    using global::System.Collections.Generic;
    using global::System.Linq;
    using global::System.Threading.Tasks;
    using global::Microsoft.AspNetCore.Components;
#nullable restore
#line (1,2)-(2,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using System.Net.Http

#nullable disable
    ;
#nullable restore
#line (2,2)-(3,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using System.Net.Http.Json

#nullable disable
    ;
#nullable restore
#line (3,2)-(4,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using Microsoft.AspNetCore.Components.Routing

#nullable disable
    ;
#nullable restore
#line (4,2)-(5,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using Microsoft.AspNetCore.Components.Web

#nullable disable
    ;
#nullable restore
#line (5,2)-(6,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using Microsoft.AspNetCore.Components.WebAssembly.Http

#nullable disable
    ;
#nullable restore
#line (6,2)-(7,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using Microsoft.JSInterop

#nullable disable
    ;
#nullable restore
#line (7,2)-(8,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using TestBlazor

#nullable disable
    ;
#nullable restore
#line (8,2)-(9,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using System.Runtime.Versioning;

#nullable disable
#nullable restore
#line (9,2)-(9,50) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using System.Runtime.InteropServices.JavaScript;

#line default
#line hidden
#nullable disable
    [global::Microsoft.AspNetCore.Components.RouteAttribute(
    // language=Route,Component
#nullable restore
#line (1,7)-(1,10) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\Pages\Index.razor"
"/"

#line default
#line hidden
#nullable disable
    )]
    #nullable restore
    public partial class Index : global::Microsoft.AspNetCore.Components.ComponentBase
    #nullable disable
    {
        #pragma warning disable 1998
        protected override void BuildRenderTree(global::Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder __builder)
        {
            __builder.OpenElement(0, "div");
            __builder.AddAttribute(1, "class", "card");
            __builder.AddAttribute(2, "style", "width:22rem");
            __builder.OpenElement(3, "div");
            __builder.AddAttribute(4, "class", "card-body");
            __builder.OpenElement(5, "h3");
            __builder.AddAttribute(6, "class", "card-title");
            __builder.AddContent(7, 
#nullable restore
#line (5,33)-(5,38) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\Pages\Index.razor"
Title

#line default
#line hidden
#nullable disable
            );
            __builder.CloseElement();
            __builder.AddMarkupContent(8, "\r\n        ");
            __builder.OpenElement(9, "p");
            __builder.AddAttribute(10, "class", "card-text");
            __builder.AddContent(11, 
#nullable restore
#line (6,31)-(6,43) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\Pages\Index.razor"
ChildContent

#line default
#line hidden
#nullable disable
            );
            __builder.CloseElement();
            __builder.AddMarkupContent(12, "\r\n        ");
            __builder.OpenElement(13, "button");
            __builder.AddAttribute(14, "onclick", global::Microsoft.AspNetCore.Components.EventCallback.Factory.Create<global::Microsoft.AspNetCore.Components.Web.MouseEventArgs>(this, 
#nullable restore
#line (7,27)-(7,32) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\Pages\Index.razor"
OnYes

#line default
#line hidden
#nullable disable
            ));
            __builder.AddContent(15, "Yes! ");
            __builder.AddContent(16, 
#nullable restore
#line (7,40)-(7,41) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\Pages\Index.razor"
i

#line default
#line hidden
#nullable disable
            );
            __builder.AddContent(17, "  ");
            __builder.AddContent(18, 
#nullable restore
#line (7,44)-(7,45) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\Pages\Index.razor"
s

#line default
#line hidden
#nullable disable
            );
            __builder.CloseElement();
            __builder.CloseElement();
            __builder.CloseElement();
        }
        #pragma warning restore 1998
#nullable restore
#line (11,8)-(32,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\Pages\Index.razor"

    int i =0;
    string s = "aa";
    [Parameter]
    public RenderFragment? ChildContent { get; set; }

    [Parameter]
    public string? Title { get; set; }

    protected override async Task OnInitializedAsync()
    {
        await JSHost.ImportAsync("CallJavaScript1",
           "../Pages/index.razor.js");
        await base.OnInitializedAsync();
    }
    private void OnYes()
    {
        s = CallJavaScript1.GetWelcomeMessage("number "+ i);
        Console.WriteLine("Write to the console in C#! 'Yes' button selected.");
        i++;
    }

#line default
#line hidden
#nullable disable

    }
}
#pragma warning restore 1591

_Imports_razor.g.cs

#pragma checksum "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor" "{8829d00f-11b8-4213-878b-770e8597ac16}" "b7b5050a7c8564675deb28d65ac06666412236a28151ac87d29acc67cf28aa36"
// <auto-generated/>
#pragma warning disable 1591
namespace TestBlazor
{
    #line default
    using global::System;
    using global::System.Collections.Generic;
    using global::System.Linq;
    using global::System.Threading.Tasks;
    using global::Microsoft.AspNetCore.Components;
#nullable restore
#line (1,2)-(2,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using System.Net.Http

#nullable disable
    ;
#nullable restore
#line (2,2)-(3,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using System.Net.Http.Json

#nullable disable
    ;
#nullable restore
#line (3,2)-(4,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using Microsoft.AspNetCore.Components.Routing

#nullable disable
    ;
#nullable restore
#line (4,2)-(5,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using Microsoft.AspNetCore.Components.Web

#nullable disable
    ;
#nullable restore
#line (5,2)-(6,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using Microsoft.AspNetCore.Components.WebAssembly.Http

#nullable disable
    ;
#nullable restore
#line (6,2)-(7,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using Microsoft.JSInterop

#nullable disable
    ;
#nullable restore
#line (7,2)-(8,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using TestBlazor

#nullable disable
    ;
#nullable restore
#line (8,2)-(9,1) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using System.Runtime.Versioning;

#nullable disable
#nullable restore
#line (9,2)-(9,50) "D:\gth\RSCG_Examples\v2\rscg_examples\Microsoft.Interop.JavaScript.JSImportGenerator\src\TestBlazor\_Imports.razor"
using System.Runtime.InteropServices.JavaScript;

#line default
#line hidden
#nullable disable
    #nullable restore
    public partial class _Imports : global::Microsoft.AspNetCore.Components.ComponentBase
    #nullable disable
    {
        #pragma warning disable 1998
        protected override void BuildRenderTree(global::Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder __builder)
        {
        }
        #pragma warning restore 1998
    }
}
#pragma warning restore 1591

JSExports.g.cs

// <auto-generated/>
namespace TestBlazor.Pages
{
    public partial class CallJavaScript1
    {
        internal static unsafe void __Wrapper_GetMessageFromDotnet_240282289(global::System.Runtime.InteropServices.JavaScript.JSMarshalerArgument* __arguments_buffer)
        {
            string s;
            ref global::System.Runtime.InteropServices.JavaScript.JSMarshalerArgument __arg_exception = ref __arguments_buffer[0];
            ref global::System.Runtime.InteropServices.JavaScript.JSMarshalerArgument __arg_return = ref __arguments_buffer[1];
            string __retVal;
            // Setup - Perform required setup.
            ref global::System.Runtime.InteropServices.JavaScript.JSMarshalerArgument __s_native__js_arg = ref __arguments_buffer[2];
            // Unmarshal - Convert native data to managed data.
            __s_native__js_arg.ToManaged(out s);
            try
            {
                __retVal = TestBlazor.Pages.CallJavaScript1.GetMessageFromDotnet(s);
                __arg_return.ToJS(__retVal);
            }
            catch (global::System.Exception ex)
            {
                __arg_exception.ToJS(ex);
            }
        }

        [global::System.Runtime.CompilerServices.ModuleInitializerAttribute]
        [global::System.Diagnostics.CodeAnalysis.DynamicDependencyAttribute("__Wrapper_GetMessageFromDotnet_240282289", typeof(TestBlazor.Pages.CallJavaScript1))]
        internal static void __Register_GetMessageFromDotnet_240282289()
        {
            if (global::System.Runtime.InteropServices.RuntimeInformation.OSArchitecture != global::System.Runtime.InteropServices.Architecture.Wasm)
                return;
            global::System.Runtime.InteropServices.JavaScript.JSFunctionBinding.BindManagedFunction("[TestBlazor]TestBlazor.Pages.CallJavaScript1:GetMessageFromDotnet", 240282289, new global::System.Runtime.InteropServices.JavaScript.JSMarshalerType[] { global::System.Runtime.InteropServices.JavaScript.JSMarshalerType.String, global::System.Runtime.InteropServices.JavaScript.JSMarshalerType.String });
        }
    }
}

JSImports.g.cs

// <auto-generated/>
namespace TestBlazor.Pages
{
    public partial class CallJavaScript1
    {
        [System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.Interop.JavaScript.JSImportGenerator", "7.0.10.6629")]
        internal static partial string GetWelcomeMessage(string s)
        {
            if (__signature_GetWelcomeMessage_240282289 == null)
            {
                __signature_GetWelcomeMessage_240282289 = global::System.Runtime.InteropServices.JavaScript.JSFunctionBinding.BindJSFunction("getMessage", "CallJavaScript1", new global::System.Runtime.InteropServices.JavaScript.JSMarshalerType[] { global::System.Runtime.InteropServices.JavaScript.JSMarshalerType.String, global::System.Runtime.InteropServices.JavaScript.JSMarshalerType.String });
            }

            global::System.Span<global::System.Runtime.InteropServices.JavaScript.JSMarshalerArgument> __arguments_buffer = stackalloc global::System.Runtime.InteropServices.JavaScript.JSMarshalerArgument[3];
            ref global::System.Runtime.InteropServices.JavaScript.JSMarshalerArgument __arg_exception = ref __arguments_buffer[0];
            __arg_exception.Initialize();
            ref global::System.Runtime.InteropServices.JavaScript.JSMarshalerArgument __arg_return = ref __arguments_buffer[1];
            __arg_return.Initialize();
            string __retVal;
            // Setup - Perform required setup.
            ref global::System.Runtime.InteropServices.JavaScript.JSMarshalerArgument __s_native__js_arg = ref __arguments_buffer[2];
            __s_native__js_arg.ToJS(s);
            global::System.Runtime.InteropServices.JavaScript.JSFunctionBinding.InvokeJS(__signature_GetWelcomeMessage_240282289, __arguments_buffer);
            // Unmarshal - Convert native data to managed data.
            __arg_return.ToManaged(out __retVal);
            return __retVal;
        }

        [global::System.ThreadStaticAttribute]
        static global::System.Runtime.InteropServices.JavaScript.JSFunctionBinding __signature_GetWelcomeMessage_240282289;
    }
}

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https://ignatandrei.github.io/RSCG_Examples/v2/docs/Microsoft.Interop.JavaScript.JSImportGenerator

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