File to string

[Henning Krause]

I'm trying to read a file into memory for further processing. I can not achieve this by using the SyncFusion File Upload component, even though the Blazor InputFile works as expected.

Here is the code I used:

<div class="container-lg">
    <div class="row">
        <div class="col">
            <p>Working</p>
            <InputFile OnChange="@LoadFiles" multiple />
        </div>
    </div>
    <div class="row">
        <div class="col">
            <p>Not working</p>
            <SfUploader ID="UploadFiles" AllowedExtensions=".ini" MaxFileSize=50000 AllowMultiple="false" AutoUpload="false" >
                <UploaderEvents ValueChange="LoadFilesSf" />
            </SfUploader>
        </div>
    </div>
</div>




@code {
    public async void LoadFiles(InputFileChangeEventArgs e)
    {
        Console.WriteLine("Upload triggered");
        var browserFile = e.File;
        var reader = await new StreamReader(browserFile.OpenReadStream()).ReadToEndAsync();
        Console.WriteLine(reader);
    }


    public async void LoadFilesSf(UploadChangeEventArgs args)
    {
        Console.WriteLine("Upload triggered");
        if(args.Files.Count == 1)
        {
            var file = args.Files[0];
            var reader = await new StreamReader(file.Stream).ReadToEndAsync();
            Console.WriteLine(reader);
        }
    }
}

How can I read the uploaded file content into a string?

[Sureshkumar P]

HI Henning, 

 

We suggest you set the stream position at 0 to achieve your requirement.  

 

Find the modified code example: 

 

<div class="container-lg"> 

    <div class="row"> 

        <div class="col"> 

            <p>Working</p> 

            <InputFile OnChange="@LoadFiles" multiple /> 

        </div> 

    </div> 

    <div class="row"> 

        <div class="col"> 

            <p>Not working</p> 

            <SfUploader ID="UploadFiles" AllowedExtensions=".ini" MaxFileSize=50000 AllowMultiple="false" AutoUpload="false" > 

                <UploaderEvents ValueChange="LoadFilesSf" /> 

            </SfUploader> 

        </div> 

    </div> 

</div> 

 

 

 

 

@code { 

    public async void LoadFiles(InputFileChangeEventArgs e) 

    { 

        Console.WriteLine("Upload triggered"); 

        var browserFile = e.File; 

        var reader = await new StreamReader(browserFile.OpenReadStream()).ReadToEndAsync(); 

        Console.WriteLine(reader); 

    } 

 

 

    public async void LoadFilesSf(UploadChangeEventArgs args) 

    { 

        Console.WriteLine("Upload triggered"); 

        if(args.Files.Count == 1) 

        { 

            var file = args.Files[0]; 

            file.Stream.Position = 0; 

            var reader = await new StreamReader(file.Stream).ReadToEndAsync(); 

            Console.WriteLine(reader); 

        } 

    } 

} 

 

Regards, 

Sureshkumar P