使用C++获取工作表中的最大范围
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在从工作表读取数据时,我们需要知道最大的区域。
在从工作表复制所有数据时,我们需要知道最大的区域。
在导出指定区域为HTML和PDF时,我们需要知道最大区域。
Aspose.Cells for C++提供了多种方法来查找工作表中的最大范围。
获取最大范围
在Aspose.Cells中,如果初始化了Row和Column对象,这些行和列将被计入最大区域,即使空行或空列没有数据。
#include <iostream>
#include "Aspose.Cells.h"
using namespace Aspose::Cells;
int main()
{
Aspose::Cells::Startup();
// Create a workbook object and open the Excel file
Workbook workbook(u"Book1.xlsx");
// Get all the worksheets in the workbook
WorksheetCollection worksheets = workbook.GetWorksheets();
Worksheet sheet = worksheets.Get(0);
// Get the max data range
int maxRow = sheet.GetCells().GetMaxRow();
int maxColumn = sheet.GetCells().GetMaxColumn();
// Create a range from A1 to the max data range
Range range = sheet.GetCells().CreateRange(0, 0, maxRow + 1, maxColumn + 1);
// Set a null value in cell A10
sheet.GetCells().Get(u"A10").PutValue(nullptr);
// Update the max data range after modifying the sheet
maxRow = sheet.GetCells().GetMaxRow();
maxColumn = sheet.GetCells().GetMaxColumn();
// Update the range to include the new data
range = sheet.GetCells().CreateRange(0, 0, maxRow + 1, maxColumn + 1);
Aspose::Cells::Cleanup();
}
获取最大数据范围
在大多数情况下,我们只需要获取包含所有数据的所有范围,即使范围外的空单元格被格式化。 以及有关形状、表格和数据透视表的设置将被忽略。
#include <iostream>
#include "Aspose.Cells.h"
using namespace Aspose::Cells;
int main()
{
Aspose::Cells::Startup();
// Instantiate a new Workbook
Workbook workbook(u"Book1.xlsx");
// Get all the worksheets in the book
WorksheetCollection worksheets = workbook.GetWorksheets();
Worksheet sheet = worksheets.Get(0);
// Gets the max data range
int maxRow = sheet.GetCells().GetMaxDataRow();
int maxColumn = sheet.GetCells().GetMaxDataColumn();
// The range is A1:B3
Range range = sheet.GetCells().CreateRange(0, 0, maxRow + 1, maxColumn + 1);
// Put null value in cell A10
sheet.GetCells().Get(u"A10").PutValue(nullptr);
// Update max data range after modification
maxRow = sheet.GetCells().GetMaxDataRow();
maxColumn = sheet.GetCells().GetMaxDataColumn();
// The range is still A1:B3
range = sheet.GetCells().CreateRange(0, 0, maxRow + 1, maxColumn + 1);
Aspose::Cells::Cleanup();
}
获取最大显示范围
当我们将工作表中的所有数据导出到 HTML、PDF 或图像时,需要获取一个包含所有可见对象的区域,包括数据、样式、图形、表格和数据透视表。 以下代码演示如何将最大显示范围渲染为HTML:
#include <iostream>
#include "Aspose.Cells.h"
using namespace Aspose::Cells;
int main()
{
Aspose::Cells::Startup();
// Source directory path
U16String srcDir(u"..\\Data\\01_SourceDirectory\\");
// Output directory path
U16String outDir(u"..\\Data\\02_OutputDirectory\\");
// Path of input Excel file
U16String inputFilePath = srcDir + u"Book1.xlsx";
// Path of output HTML file
U16String outputFilePath = outDir + u"html.html";
// Instantiate a new Workbook
Workbook workbook(inputFilePath);
// Get all the worksheets in the book
WorksheetCollection worksheets = workbook.GetWorksheets();
// Get the max display range of the first worksheet
Range range = worksheets.Get(0).GetCells().GetMaxDisplayRange();
// Create HtmlSaveOptions to configure the export
HtmlSaveOptions saveOptions;
saveOptions.SetExportActiveWorksheetOnly(true);
// Set the export area to the range of the first worksheet
CellArea exportArea = CellArea::CreateCellArea(range.GetFirstRow(), range.GetFirstColumn(),
range.GetFirstRow() + range.GetRowCount() - 1,
range.GetFirstColumn() + range.GetColumnCount() - 1);
saveOptions.SetExportArea(exportArea);
// Save the range to HTML
workbook.Save(outputFilePath, saveOptions);
std::cout << "Range saved to HTML successfully!" << std::endl;
Aspose::Cells::Cleanup();
}
这是 源 Excel 文件。