.NET Aspire (開発者向けの仕組み)

@page "/PrintPDF"
@rendermode InteractiveServer
@using IronPdf
<PageTitle>Print PDF</PageTitle>
<h1>IronPDF</h1>
<p role="status">Click on the button below to create and download the PDF file </p>
<button class="btn btn-primary" @onclick="IncrementCount">Print</button>
@code {
    private int currentCount = 0;

    /// <summary>
    /// Handles the click event of the "Print" button.
    /// This function will generate a PDF from an HTML string and prompt the user to download it.
    /// </summary>
    private void IncrementCount()
    {
        var renderer = new ChromePdfRenderer();
        // Create a PDF from an HTML string using C#
        var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>");
        // Export to a file using JavaScript Interop to initiate download
        JSRuntime.InvokeVoidAsync("saveAsFile", "output.pdf", Convert.ToBase64String(pdf.Stream.ToArray()));
    }
}

'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: @page "/PrintPDF" @rendermode InteractiveServer using IronPdf <PageTitle> Print PDF</PageTitle> <h1> IronPDF</h1> <p role="status"> Click on the button below to create and download the PDF file </p> <button class="btn btn-primary" onclick="IncrementCount"> Print</button> @code
"btn btn-primary" onclick="IncrementCount"> Print</button> code
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: Friend @page "/PrintPDF" @rendermode InteractiveServer using IronPdf <PageTitle> Print PDF</PageTitle> <h1> IronPDF</h1> <p role="status"> Click on the button below to create and download the PDF file </p> <button Class="btn btn-primary" onclick
"status"> Click on the button below [to] create [and] download the PDF file </p> <button Class="btn btn-primary" onclick
Private Private Friend page "/PrintPDF" rendermode InteractiveServer [using] IronPdf (Of PageTitle) Print PDF</PageTitle> (Of h1) IronPDF</h1> <p role="status"> Click on the button below [to] create [and] download the PDF file </p> <button Class
	Private currentCount As Integer = 0

	''' <summary>
	''' Handles the click event of the "Print" button.
	''' This function will generate a PDF from an HTML string and prompt the user to download it.
	''' </summary>
	Private Sub IncrementCount()
		Dim renderer = New ChromePdfRenderer()
		' Create a PDF from an HTML string using C#
		Dim pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>")
		' Export to a file using JavaScript Interop to initiate download
		JSRuntime.InvokeVoidAsync("saveAsFile", "output.pdf", Convert.ToBase64String(pdf.Stream.ToArray()))
	End Sub
End Class

<script type="text/javascript">
    function saveAsFile(filename, bytesBase64) {
        if (navigator.msSaveBlob) {
            //Download document in Edge browser
            var data = window.atob(bytesBase64);
            var bytes = new Uint8Array(data.length);
            for (var i = 0; i < data.length; i++) {
                bytes[i] = data.charCodeAt(i);
            }
            var blob = new Blob([bytes.buffer], { type: "application/octet-stream" });
            navigator.msSaveBlob(blob, filename);
            window.navigator.msSaveOrOpenBlob(blob);
        }
        else {
            var link = document.createElement('a');
            link.download = filename;
            link.href = "data:application/octet-stream;base64," + bytesBase64;
            document.body.appendChild(link); // Needed for Firefox
            link.click();
            document.body.removeChild(link);
        }
    }
</script>