使用Aspose.Cells库在C#中应用条件格式阴影以交替显示行和列。通过调整这些条件,您可以更好地控制单元格的外观。

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本文使用Excel内置函数,如ROW、COLUMN和MOD。以下是这些函数的一些详细信息,以便更好地理解提供的代码片段。

  • ROW() 函数返回单元格引用的行号。如果省略引用参数,则假定引用为输入 ROW 函数的单元格地址。
  • COLUMN() 函数返回单元格引用的列号。如果省略引用参数,则假定引用为输入 COLUMN 函数的单元格地址。
  • **MOD()**函数返回一个数字被除数除后的余数,函数的第一个参数是要查找余数的数值,第二个参数是用来除以数值参数的数。如果除数为0,则会返回#DIV/0!错误。

让我们开始编写一些代码,利用 Aspose.Cells for Node.js via C++ API 实现此目标。

const path = require("path");
const AsposeCells = require("aspose.cells.node");
// The path to the documents directory.
const dataDir = path.join(__dirname, "data");
// Create an instance of Workbook or load existing
const book = new AsposeCells.Workbook();
// Access the Worksheet on which desired rule has to be applied
const sheet = book.getWorksheets().get(0);
// Add FormatConditions to the instance of Worksheet
let idx = sheet.getConditionalFormattings().add();
// Access the newly added FormatConditions via its index
const conditionCollection = sheet.getConditionalFormattings().get(idx);
// Define a CellsArea on which conditional formatting will be applicable
// The code creates a CellArea ranging from A1 to I20
const area = AsposeCells.CellArea.createCellArea("A1", "I20");
// Add area to the instance of FormatConditions
conditionCollection.addArea(area);
// Add a condition to the instance of FormatConditions
// For this case, the condition type is expression, which is based on some formula
idx = conditionCollection.addCondition(AsposeCells.FormatConditionType.Expression);
// Access the newly added FormatCondition via its index
const formatCondition = conditionCollection.get(idx);
// Set the formula for the FormatCondition
formatCondition.setFormula1("=MOD(ROW(),2)=0");
// Set the background color and pattern for the FormatCondition's Style
formatCondition.getStyle().setBackgroundColor(AsposeCells.Color.Blue);
formatCondition.getStyle().setPattern(AsposeCells.BackgroundType.Solid);
// Save the result on disk
book.save(path.join(dataDir, "output_out.xlsx"));

以下快照显示了加载到Excel应用程序中的结果电子表格。

todo:image_alt_text

为了将底纹应用于交替列,您只需将公式**=MOD(ROW(),2)=0**更改为**=MOD(COLUMN(),2)=0**,即不再获取行索引,而是修改公式以检索列索引。
在这种情况下,生成的电子表格将如下所示。

todo:image_alt_text