Ta bort befintliga PrinterSettings för kalkylblad i Excel fil med JavaScript via C++
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Möjliga användningsscenario
Ibland vill utvecklare förhindra Excel från att inkludera .bin-filer av skrivarinställningar i sparade XLSX-filer. Skrivarinställningsfiler finns under “[fil “root”]\xl\printerSettings”. I den här dokumentationen förklaras hur man tar bort befintliga skrivarinställningar med Aspose.Cells-API:er.
Ta bort befintliga skrivareinställningar för arbetsblad i Excel-fil
Aspose.Cells möjliggör att ta bort befintliga skrivarinställningar som är specificerade för olika kalkylblad i Excel-filen. Följande exempelkod illustrerar hur man tar bort befintliga skrivarinställningar för alla kalkylblad i arbetsboken. Se dess exempelfil för Excel, utdata för Excel-fil, konsolresultat samt skärmdumpen som referens.
Skärmdump
Exempelkod
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example - Remove Printer Settings</title>
<meta charset="utf-8" />
<style>
body { font-family: Arial, sans-serif; margin: 20px; }
#result { margin-top: 15px; white-space: pre-wrap; }
input, button { margin-top: 10px; display: block; }
</style>
</head>
<body>
<h1>Remove Existing Printer Settings Of Worksheets</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>
<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');
const resultDiv = document.getElementById('result');
resultDiv.innerHTML = '';
if (!fileInput.files.length) {
resultDiv.innerHTML = '<p style="color: red;">Please select an Excel file.</p>';
return;
}
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
// Instantiating a Workbook object from the uploaded file
const wb = new Workbook(new Uint8Array(arrayBuffer));
// Get the sheet counts of the workbook
const sheetCount = wb.worksheets.count;
const messages = [];
// Iterate all sheets
for (let i = 0; i < sheetCount; i++) {
// Access the i-th worksheet
const ws = wb.worksheets.get(i);
// Access worksheet page setup
const ps = ws.pageSetup;
// Check if printer settings for this worksheet exist
if (ps.printerSettings != null) {
// Print the following message
console.log("PrinterSettings of this worksheet exist.");
messages.push("PrinterSettings of this worksheet exist.");
// Print sheet name and its paper size
console.log("Sheet Name: " + ws.name);
console.log("Paper Size: " + ps.paperSize);
messages.push("Sheet Name: " + ws.name);
messages.push("Paper Size: " + ps.paperSize);
// Remove the printer settings by setting them null
ps.printerSettings = null;
console.log("Printer settings of this worksheet are now removed by setting it null.");
messages.push("Printer settings of this worksheet are now removed by setting it null.");
messages.push("");
}
}
// Save the workbook
const outputData = wb.save(SaveFormat.Xlsx);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'outputRemoveExistingPrinterSettingsOfWorksheets.xlsx';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Modified Excel File';
resultDiv.innerHTML = '<p style="color: green;">Operation completed successfully! Click the download link to get the modified file.</p><pre>' + messages.join('\n') + '</pre>';
});
</script>
</body>
</html>
Konsoloutput
PrinterSettings of this worksheet exist.
Sheet Name: Sheet1
Paper Size: PaperLegal
Printer settings of this worksheet are now removed by setting it null.
PrinterSettings of this worksheet exist.
Sheet Name: Sheet2
Paper Size: PaperEnvelopeB5
Printer settings of this worksheet are now removed by setting it null.
PrinterSettings of this worksheet exist.
Sheet Name: Sheet3
Paper Size: PaperA6
Printer settings of this worksheet are now removed by setting it null.
PrinterSettings of this worksheet exist.
Sheet Name: Sheet4
Paper Size: PaperA3
Printer settings of this worksheet are now removed by setting it null.