删除工作表中的空白列和行时更新其他工作表中的引用
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当您删除工作表中的空白列和行时,其他工作表中对它们的引用将变得无效。如果您想避免此行为,并希望其他工作表中对当前工作表的引用也得到更新,那么请使用DeleteOptions.getUpdateReference()属性并将其设置为true。
删除工作表中的空白列和行时更新其他工作表中的引用
请查看以下示例代码及其控制台输出。第二个工作表中的单元格 E3 具有公式 =Sheet1!C3,引用第一个工作表中的 C3 单元格。如果将 DeleteOptions.getUpdateReference() 属性设置为true,删除第一个工作表中的空白列和行后,该公式将更新为 =Sheet1!A1。然而,如果将 DeleteOptions.getUpdateReference() 属性设置为false,第二个工作表中的 E3 单元格中的公式将保持不变,仍然是 =Sheet1!C3,此时公式无效。
编程示例
const path = require("path");
const AsposeCells = require("aspose.cells.node");
// The path to the documents directory.
const dataDir = path.join(__dirname, "data");
const filePath = path.join(dataDir, "sample.xlsx");
// Create workbook
const wb = new AsposeCells.Workbook();
// Add second sheet with name Sheet2
wb.getWorksheets().add("Sheet2");
// Access first sheet and add some integer value in cell C1
// Also add some value in any cell to increase the number of blank rows and columns
const sht1 = wb.getWorksheets().get(0);
sht1.getCells().get("C1").putValue(4);
sht1.getCells().get("K30").putValue(4);
// Access second sheet and add formula in cell E3 which refers to cell C1 in first sheet
const sht2 = wb.getWorksheets().get(1);
sht2.getCells().get("E3").setFormula("'Sheet1'!C1");
// Calculate formulas of workbook
wb.calculateFormula();
// Print the formula and value of cell E3 in second sheet before deleting blank columns and rows in Sheet1.
console.log("Cell E3 before deleting blank columns and rows in Sheet1.");
console.log("--------------------------------------------------------");
console.log("Cell Formula: " + sht2.getCells().get("E3").getFormula());
console.log("Cell Value: " + sht2.getCells().get("E3").getStringValue());
// If you comment DeleteOptions.UpdateReference property below, then the formula in cell E3 in second sheet will not be updated
const opts = new AsposeCells.DeleteOptions();
opts.setUpdateReference(true);
// Delete all blank rows and columns with delete options
sht1.getCells().deleteBlankColumns(opts);
sht1.getCells().deleteBlankRows(opts);
// Calculate formulas of workbook
wb.calculateFormula();
// Print the formula and value of cell E3 in second sheet after deleting blank columns and rows in Sheet1.
console.log("");
console.log("");
console.log("Cell E3 after deleting blank columns and rows in Sheet1.");
console.log("--------------------------------------------------------");
console.log("Cell Formula: " + sht2.getCells().get("E3").getFormula());
console.log("Cell Value: " + sht2.getCells().get("E3").getStringValue());
控制台输出
这是上述示例代码在将 DeleteOptions.getUpdateReference() 属性设置为true时的控制台输出。
Cell E3 before deleting blank columns and rows in Sheet1.
\--------------------------------------------------------
Cell Formula: =Sheet1!C1
Cell Value: 4
Cell E3 after deleting blank columns and rows in Sheet1.
\--------------------------------------------------------
Cell Formula: =Sheet1!A1
Cell Value: 4
这是上述示例代码在将 DeleteOptions.getUpdateReference() 属性设置为false时的控制台输出。可以看到,E3 单元格中的公式没有被更新,其值变为 0,而非 4,公式因此无效。
Cell E3 before deleting blank columns and rows in Sheet1.
\--------------------------------------------------------
Cell Formula: =Sheet1!C1
Cell Value: 4
Cell E3 after deleting blank columns and rows in Sheet1.
\--------------------------------------------------------
Cell Formula: =Sheet1!C1
Cell Value: 0