unmanaged Ressourcen des Arbeitsbuchs mit JavaScript über C++ freigeben

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Das Workbook Objekt implementiert jetzt die System.IDisposable Schnittstelle, die eine einzelne Methode Workbook.dispose() hat. Sie können entweder direkt die Workbook.dispose() Methode aufrufen oder den Using Befehl verwenden, um diese Methode automatisch aufzurufen.

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
    </head>
    <body>
        <h1>Aspose.Cells Dispose Example</h1>
        <input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
        <button id="runExample">Run Example</button>
        <a id="downloadLink" style="display: none;">Download Result</a>
        <div id="result"></div>
    </body>

    <script src="aspose.cells.js.min.js"></script>
    <script type="text/javascript">
        const { Workbook, SaveFormat, Worksheet, Cell, Utils } = AsposeCells;

        AsposeCells.onReady({
            license: "/lic/aspose.cells.enc",
            fontPath: "/fonts/",
            fontList: [
                "arial.ttf",
                "NotoSansSC-Regular.ttf"
            ]
        }).then(() => {
            console.log("Aspose.Cells initialized");
        });

        document.getElementById('runExample').addEventListener('click', async () => {
            const fileInput = document.getElementById('fileInput');
            if (!fileInput.files.length) {
                document.getElementById('result').innerHTML = '<p style="color: red;">Please select an Excel file.</p>';
                return;
            }

            const file = fileInput.files[0];
            const arrayBuffer = await file.arrayBuffer();

            // Loads the workbook which contains hidden external links
            const workbook = new Workbook(new Uint8Array(arrayBuffer));

            // Create workbook object
            const wb1 = new Workbook();

            // Call Dispose method
            wb1.dispose();

            // Call Dispose method via a scoped approach
            (async () => {
                const wb2 = new Workbook();
                // Any other code goes here
                wb2.dispose();
            })();

            document.getElementById('result').innerHTML = '<p style="color: green;">Operation completed successfully!</p>';
        });
    </script>
</html>