通过 C++ 的 JavaScript 更新切片器
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可能的使用场景
如果你想在Microsoft Excel中更新切片器，选择或取消选择其项目，切片器表或数据透视表将相应更新。请使用Slicer.slicerCacheItems通过Aspose.Cells选择或取消选择切片器项，然后调用Slicer.refresh()方法来更新切片器表或数据透视表。
如何更新数据透视切片器
以下示例代码加载包含现有数据透视切片器的示例 Excel 文件，取消选择数据透视切片器的第 2 和第 3 个项目，并刷新数据透视切片器，然后将工作簿保存为输出 Excel 文件。以下屏幕截图显示了示例代码对示例 Excel 文件的效果。如屏幕截图所示，使用选定项目刷新数据透视切片器也已相应地刷新了数据透视表。
示例代码
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example - Update Slicer</title>
</head>
<body>
<h1>Update Slicer Example</h1>
<input type="file" id="fileInput" accept=".xls,.xlsx" />
<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, 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();
// Instantiate Workbook from uploaded file
const workbook = new Workbook(new Uint8Array(arrayBuffer));
// Access first worksheet
const ws = workbook.worksheets.get(0);
// Access the first slicer inside the slicer collection
const slicer = ws.slicers.get(0);
// Access the slicer items via slicer cache
const items = slicer.slicerCache.slicerCacheItems;
// Iterate items and deselect "Pink" and "Green"
for (let i = 0; i < items.count; i++) {
const item = items.get(i);
if (item.value === "Pink" || item.value === "Green") {
item.selected = false;
}
}
// Refresh slicer to apply changes
slicer.refresh();
// Save modified workbook and provide download link
const outputData = workbook.save(SaveFormat.Xlsx);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'out.xlsx';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Modified Excel File';
document.getElementById('result').innerHTML = '<p style="color: green;">Slicer updated successfully! Click the download link to get the modified file.</p>';
});
</script>
</html>