更改 excel 中单元格的背景颜色

Question

我需要更改每个包含文本的单元格的背景颜色 "Change"。有什么想法可以使用 OpenXML 实现吗？我只针对一个特定的单元格（columnName + rowIndex）进行更改，但不是针对所有值为 "Change".

的单元格

是否可以使用 OpenXML 或我需要使用不同的方法？

Answer 1

只需使用条件格式。转到条件格式，新规则，仅格式化包含的单元格，将 "Cell Value" 更改为 "Specific Text"，输入单词 "Change"。根据您的选择格式化填充颜色，点击应用，确定。

Answer 2

您可以使用 ConditionalFormatting class, adding ConditionalFormattingRules 为每个要匹配的规则创建条件格式。

要应用的格式需要在DifferentialFormat which needs to be added to the DifferentialFormats集合中定义。

如果单元格包含 "Changes"，则以下代码将创建一个具有红色背景条件格式的新电子表格。它还会使用 "Changes" 或 "a" 填充单元格 A1:J20，以表明条件格式有效。

public static void CreateConditionalWorkbook(string filepath)
{
    using (SpreadsheetDocument document = SpreadsheetDocument.
        Create(filepath, SpreadsheetDocumentType.Workbook))
    {
        WorkbookPart workbookPart = document.AddWorkbookPart();
        workbookPart.Workbook = new Workbook();

        var worksheetPart = workbookPart.AddNewPart<WorksheetPart>();
        worksheetPart.Worksheet = new Worksheet();

        Sheets sheets = workbookPart.Workbook.AppendChild(new Sheets());

        Sheet sheet = new Sheet() { Id = workbookPart.GetIdOfPart(worksheetPart), SheetId = 1, Name = "Sheet" };
        sheets.Append(sheet);

        workbookPart.Workbook.Save();

        var sheetData = worksheetPart.Worksheet.AppendChild(new SheetData());

        WorkbookStylesPart stylesPart = workbookPart.AddNewPart<WorkbookStylesPart>();
        stylesPart.Stylesheet = new Stylesheet();

        Fills fills = new Fills() { Count = 1U };

        DifferentialFormats differentialFormats = new DifferentialFormats() { Count = (UInt32Value)1U };

        ConditionalFormatting conditionalFormatting = new ConditionalFormatting() { SequenceOfReferences = new ListValue<StringValue>() { InnerText = "A1:XFD1048576" } };

        DifferentialFormat differentialFormat = new DifferentialFormat();
        Fill fill = new Fill();
        PatternFill patternFill = new PatternFill();
        BackgroundColor backgroundColor = new BackgroundColor() { Rgb = new HexBinaryValue() { Value = "ff0000" } };
        patternFill.Append(backgroundColor);
        fill.Append(patternFill);
        differentialFormat.Append(fill);
        differentialFormats.Append(differentialFormat);

        Formula formula1 = new Formula();
        formula1.Text = "\"Change\"";

        ConditionalFormattingRule conditionalFormattingRule = new ConditionalFormattingRule()
        {
            Type = ConditionalFormatValues.CellIs,
            FormatId = 0U,
            Priority = 1,
            Operator = ConditionalFormattingOperatorValues.Equal
        };

        conditionalFormattingRule.Append(formula1);

        conditionalFormatting.Append(conditionalFormattingRule);

        worksheetPart.Worksheet.Append(conditionalFormatting);
        stylesPart.Stylesheet.Append(differentialFormats);

        Random r = new Random();
        for (uint rowId = 1; rowId <= 20; rowId++)
        {
            Row row = new Row() { RowIndex = rowId };

            for (int cellId = 0; cellId < 10; cellId++)
            {
                Cell cell = new Cell();
                cell.CellReference = string.Format("{0}{1}", (char)(65 + cellId), rowId);
                cell.DataType = CellValues.String;
                cell.CellValue = new CellValue(r.Next(2) % 2 == 0 ? "a" : "Change");
                row.Append(cell);
            }

            sheetData.Append(row);
        }

        workbookPart.Workbook.Save();

        document.Close();
    }
}

上面运行之后的示例输出是：

更改 excel 中单元格的背景颜色

Changing background colour of a cell in excel

c#

excel

openxml