Blazor.SeekableStream 1.0.1

.NET 7.0 This package targets .NET 7.0. The package is compatible with this framework or higher. 
dotnet add package Blazor.SeekableStream --version 1.0.1
                    


                    

                
NuGet\Install-Package Blazor.SeekableStream -Version 1.0.1
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Blazor.SeekableStream" Version="1.0.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Blazor.SeekableStream" Version="1.0.1" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Blazor.SeekableStream" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Blazor.SeekableStream --version 1.0.1
                    


                    

                
#r "nuget: Blazor.SeekableStream, 1.0.1"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Blazor.SeekableStream@1.0.1
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Blazor.SeekableStream&version=1.0.1
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Blazor.SeekableStream&version=1.0.1
                    


                            Install as a Cake Tool

A Stream interop for Blazor from Javascript to .NET that supports Seek operations (as well as Position property). By default, Blazor's IJSStreamReference does not support Seek method and throws NotSupportedException.

image

Installation

Install the NuGet package Blazor.SeekableStream to your Blazor project.

dotnet add package Blazor.SeekableStream

Usage

See also: the Demo project.

Get a hold to a Javascript's ArrayBuffer, Blob or Response object and pass it to .NET as the usual IJSObjectReference.

For example, this function send a File (which is a Blob) that the user picked:

interop.js:

export function pickFileAsync() {
    return new Promise(r => {
        const txt = document.createElement("input");
        txt.type = "file";
        txt.onchange = () => r(txt.files[0]);
        txt.click();
    });
}

Then in .NET, call AsSeekableStreamReference on the appropriate IJSObjectReference instances. You need to pass an IJSRuntime instance as the parameter as well.

Index.razor.cs:

var mod = await Js.InvokeAsync<IJSObjectReference>(
    "import",
    "/interop.js");

var file = await mod.InvokeAsync<IJSObjectReference>(PickMethodName);
var seekable = file.AsSeekableStreamReference(Js);
var stream = await seekable.OpenReadStreamAsync();

// Work with Stream
Product Compatible and additional computed target framework versions.
.NET net7.0 is compatible.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version Downloads Last Updated
1.0.1 269 5/13/2023