用JavaScript通过C++对行和列进行分组和取消分组
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介绍
在 Microsoft Excel 文件中，您可以创建一个数据大纲，以便通过单击鼠标来显示和隐藏不同级别的细节。
单击大纲符号1、2、3、+和- 快速显示工作表中仅提供摘要或标题部分的行或列，或者您可使用符号查看摘要或标题下的详细信息，如下图所示:
| 分组行和列 |
|---|
 |
行和列的分组管理
Aspose.Cells 提供一个类 Workbook，代表一个 Microsoft Excel 文件。Workbook 类包含一个 WorksheetCollection，允许访问 Excel 文件中的每个工作表。工作表由 Worksheet 类表示。Worksheet 类提供一个 Cells 集合，表示工作表中的所有单元格。
Cells 集合提供多个管理工作表中行或列的方法，以下部分做了更详细的介绍。
分组行和列
可以通过调用 Cells 集合的 groupRows(number, number, boolean) 和 groupColumns(number, number) 方法对行或列进行分组。这两个方法都接受以下参数：
- 第一个行/列索引，即组中的第一行或列。
- 最后一个行/列索引，即组中的最后一行或列。
- 是否隐藏，一个布尔参数，指定是否在分组后隐藏行/列。
<!DOCTYPE html>
<html>
<head>
<title>Group Rows and Columns Example</title>
</head>
<body>
<h1>Group Rows and Columns 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, 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();
const workbook = new Workbook(new Uint8Array(arrayBuffer));
const worksheet = workbook.worksheets.get(0);
worksheet.cells.groupRows(0, 5, true);
worksheet.cells.groupColumns(0, 2, true);
const outputData = workbook.save(SaveFormat.Excel97To2003);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'output.xls';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Modified Excel File';
document.getElementById('result').innerHTML = '<p style="color: green;">Rows and columns grouped successfully! Click the download link to get the modified file.</p>';
});
</script>
</html>
分组设置
Microsoft Excel 允许您配置用于显示的分组设置：
- 详细信息下面的摘要行。
- 详细信息右侧的摘要列。
开发者可以使用 Worksheet 类的 outline 属性配置这些分组设置。
将摘要行显示在详细信息下方
可以通过将 summaryRowBelow 类的 Outline 属性设置为 true 或 false 来控制是否在详细信息下方显示汇总行。
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
<meta charset="utf-8" />
</head>
<body>
<h1>Aspose.Cells Example - Group Rows/Columns and Set Outline</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 } = 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');
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 workbook = new Workbook(new Uint8Array(arrayBuffer));
// Accessing the first worksheet in the Excel file
const worksheet = workbook.worksheets.get(0);
// Grouping first six rows and first three columns
worksheet.cells.groupRows(0, 5, true);
worksheet.cells.groupColumns(0, 2, true);
// Setting SummaryRowBelow property to false
worksheet.outline.summaryRowBelow = false;
// Saving the modified Excel file (Excel97To2003 -> .xls)
const outputData = workbook.save(SaveFormat.Excel97To2003);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'output.xls';
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>';
});
</script>
</html>
将摘要列显示在详细信息右侧
开发者也可以通过将 Outline 类的 summaryColumnRight 属性设为 true 或 false 来控制在详细信息右侧显示汇总列。
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Group Rows and Columns 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, 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();
// Instantiating a Workbook object from uploaded file
const workbook = new Workbook(new Uint8Array(arrayBuffer));
// Accessing the first worksheet in the Excel file
const worksheet = workbook.worksheets.get(0);
// Grouping first six rows and first three columns
worksheet.cells.groupRows(0, 5, true);
worksheet.cells.groupColumns(0, 2, true);
// Set summary column to right
worksheet.outline.summaryColumnRight = true;
// Saving the modified Excel file (Excel 97-2003 format)
const outputData = workbook.save(SaveFormat.Excel97To2003);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'output.xls';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Modified Excel File';
document.getElementById('result').innerHTML = '<p style="color: green;">Operation completed successfully! Click the download link to get the modified file.</p>';
});
</script>
</html>
取消分组行和列
若要取消分组的行或列，调用 ungroupColumns(number, number) 集合的 Cells 和 ungroupRows(number, number, boolean) 方法。这两个方法都需要两个参数：
- 第一个行或列索引，即要取消分组的第一行/列。
- 最后一个行或列索引，即要取消分组的最后一行/列。
ungroupRows(number, number, boolean) 提供了一个重载，可以接受一个布尔值作为第三参数。将其设为 true 会删除所有分组信息；否则只删除外层分组信息。
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Ungroup Rows and Columns 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 } = 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();
// Instantiating a Workbook object with file content
const workbook = new Workbook(new Uint8Array(arrayBuffer));
// Accessing the first worksheet in the Excel file
const worksheet = workbook.worksheets.get(0);
// Ungrouping first six rows (from 0 to 5)
worksheet.cells.ungroupRows(0, 5);
// Ungrouping first three columns (from 0 to 2)
worksheet.cells.ungroupColumns(0, 2);
// Saving the modified Excel file
const outputData = workbook.save(SaveFormat.Excel97To2003);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'output.xls';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Modified Excel File';
document.getElementById('result').innerHTML = '<p style="color: green;">Operation completed successfully! Click the download link to get the modified file.</p>';
});
</script>
</html>