释放工作簿的未托管资源（JavaScript通过C++）
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Aspose.Cells 提供 Workbook.dispose() 方法以释放 Workbook 对象的非托管资源。Dispose 模式仅用于访问非托管资源的对象，例如文件和管道句柄、注册表句柄、等待句柄或指向非托管内存块的指针。这是因为垃圾收集器在回收未使用的托管对象方面非常高效，但无法回收非托管对象。
Workbook 对象现在实现了 System.IDisposable 接口，该接口包含唯一的方法 Workbook.dispose()。你可以直接调用 Workbook.dispose() 方法，或者使用 Using 语句自动调用此方法。
<!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>