删除工作表中的空白列和行时更新其他工作表中的引用

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.UpdateReference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

请参阅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具有一个涉及到第一个工作表中单元格C3的公式=Sheet1!C3。如果您将DeleteOptions.UpdateReference属性设置为true，此公式将得到更新并变成在删除第一个工作表中的空白列和行后=Sheet1!A1。但是，如果您将DeleteOptions.UpdateReference属性设置为false，则第二个工作表中单元格E3的公式将保持=Sheet1!C3并变得无效。

编程示例

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
// Create workbook
Workbook wb = new Workbook();

// Add second sheet with name Sheet2
wb.Worksheets.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
Worksheet sht1 = wb.Worksheets[0];
sht1.Cells["C1"].PutValue(4);
sht1.Cells["K30"].PutValue(4);

// Access second sheet and add formula in cell E3 which refers to cell C1 in first sheet
Worksheet sht2 = wb.Worksheets[1];
sht2.Cells["E3"].Formula = "'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.WriteLine("Cell E3 before deleting blank columns and rows in Sheet1.");
Console.WriteLine("--------------------------------------------------------");
Console.WriteLine("Cell Formula: " + sht2.Cells["E3"].Formula);
Console.WriteLine("Cell Value: " + sht2.Cells["E3"].StringValue);

// If you comment DeleteOptions.UpdateReference property below, then the formula in cell E3 in second sheet will not be updated
DeleteOptions opts = new DeleteOptions();
opts.UpdateReference = true;

// Delete all blank rows and columns with delete options
sht1.Cells.DeleteBlankColumns(opts);
sht1.Cells.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.WriteLine("");
Console.WriteLine("");
Console.WriteLine("Cell E3 after deleting blank columns and rows in Sheet1.");
Console.WriteLine("--------------------------------------------------------");
Console.WriteLine("Cell Formula: " + sht2.Cells["E3"].Formula);
Console.WriteLine("Cell Value: " + sht2.Cells["E3"].StringValue);

控制台输出

上述示例代码当DeleteOptions.UpdateReference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

上述示例代码当DeleteOptions.UpdateReference属性设置为false时的控制台输出。您可以看到，第二个工作表中单元格E3的公式没有得到更新，它的单元格值现在是0而不是4，这是无效的。

 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