如何在c#中使用OpenXml为excel文件的列/列设置数据验证列表？

Question

我需要使用openXml使用特定列表作为excel文件的列/列中的源创建下拉列表.

我使用以下代码,

     SpreadsheetDocument spreadSheetDocument = SpreadsheetDocument.Open("C:\\Users\\Harun.TV\\Desktop\\OpenXml\\1.xlsx",true);

        WorkbookPart workbookpart = spreadSheetDocument.WorkbookPart;
        Workbook workbook=workbookpart.Workbook;


        WorksheetPart worksheetPart=workbookpart.WorksheetParts.First();            


        DataValidations dataValidations1 = new DataValidations();
        DataValidation dataValidation2 = new DataValidation() { Formula1 = new Formula1("'mySheet'!$A$1:$A$4"), Type = DataValidationValues.List, AllowBlank = true, ShowInputMessage = true, ShowErrorMessage = true, SequenceOfReferences = new ListValue<StringValue>() { InnerText = "A4:B4" } };
        Formula1 formula12 = new Formula1();
        formula12.Text = "$A$1:$A$3";
        dataValidations1.Append(dataValidation2);
        worksheetPart.Worksheet.Append(dataValidations1);

         workbookpart.Workbook.Save();


        spreadSheetDocument.Close();

并且它会在打开excel时抛出错误.日志如下,

      <?xml version="1.0" encoding="UTF-8" standalone="true"?>
     -<recoveryLog xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main">     <logFileName>error055840_01.xml</logFileName>
      <summary>Errors were detected in file  'C:\Users\Harun.TV\Desktop\OpenXml\6.xlsx'</summary>
      -<removedParts summary="Following is a  list of removed parts:">     
       <removedPart>Replaced Part: /xl/worksheets/sheet3.xml part with XML error. Load error. Line 1, column 467.</removedPart></removedParts></recoveryLog>

另外,我如何将一个逗号分隔值列表分配给DataValidations并获得所需的结果,因为我们手动为excel列操作？

Answer 1

问题可能是已存在"DataValidatoins"节点.这对我有用:

        DataValidation dataValidation = new DataValidation
        {
            Type = DataValidationValues.List,
            AllowBlank = true,
            SequenceOfReferences = new ListValue<StringValue>() { InnerText = "B1" },
            Formula1 = new Formula1("'SheetName'!$A$1:$A$3")
        };

        DataValidations dvs = worksheet.GetFirstChild<DataValidations>(); //worksheet type => Worksheet
        if (dvs != null)
        {
            dvs.Count = dvs.Count + 1;
            dvs.Append(dataValidation);
        }
        else
        {
            DataValidations newDVs = new DataValidations();
            newDVs.Append(dataValidation);
            newDVs.Count = 1;
            worksheet.Append(newDVs);
        }