如何使用NPOI

创建使用NPOI使用下面的代码如何使用NPOI

  var workbook = new HSSFWorkbook(); 
      var sheet = workbook.CreateSheet("Candidate"); 

      // Add header labels 
      var rowIndex = 0; 
      var row = sheet.CreateRow(rowIndex); 
      row.CreateCell(0).SetCellValue("Name"); 
      row.CreateCell(1).SetCellValue("1,2,3"); 
      row.CreateCell(2).SetCellValue("4,5,6"); 
      row.CreateCell(3).SetCellValue("7,8,9"); 
      rowIndex++; 


      // Add data rows 
      for (int i = 1; i <= 5; i++) 
      { 
       row = sheet.CreateRow(rowIndex); 
       row.CreateCell(0).SetCellValue("Candidate" + i.ToString()); 
       row.CreateCell(1).SetCellValue(""); 
       row.CreateCell(2).SetCellValue(""); 
       row.CreateCell(3).SetCellValue(""); 
       rowIndex++; 
      }

我只是想补充一些验证在每个小区我已经创建了一个EXCELL文件在Excel单元格设置验证。对于例如：restrict cell 2 with inputs only 1,2,3

在Excel we can Set Data Validation到whole number并能specify Min and Max Value。

任何想法实现这一点将是一个很大的帮助。

来源

2013-06-20 Nithesh

我发现这一点，并与以下代码大大合作。

var markConstraint = DVConstraint.CreateExplicitListConstraint(new string[]{"1","2","3"}); 
    var markColumn = new CellRangeAddressList(1, 5, 1, 1); 
    var markdv = new HSSFDataValidation(markColumn, markConstraint); 
    markdv.EmptyCellAllowed = true; 
    markdv.CreateErrorBox("Wrong Value", "Please Enter a correct value"); 
    sheet.AddValidationData(markdv);

来源

2013-06-20 11:12:45 Nithesh

试试这个例子

XSSFDataValidation dataValidation = null; 
XSSFDataValidationConstraint dvConstraint = null; 
XSSFDataValidationHelper validationHelper = null; 

int DVRowLimit = (Int16.MaxValue); 
XSSFCellStyle numberCellStyle = (XSSFCellStyle)workbook.CreateCellStyle(); 
XSSFDataFormat numberDataFormat = (XSSFDataFormat)workbook.CreateDataFormat(); 
numberCellStyle.SetDataFormat(numberDataFormat.GetFormat("#,###,###")); 


CellRangeAddressList cellRangeFieldsType1 = new CellRangeAddressList(1, DVRowLimit, headerCount, headerCount); 
dvConstraint = (XSSFDataValidationConstraint)validationHelper.CreateintConstraint(OperatorType.BETWEEN, "0", Int64.MaxValue.ToString()); 
dataValidation = (XSSFDataValidation)validationHelper.CreateValidation(dvConstraint, cellRangeFieldsType1); 
dataValidation.ShowErrorBox = true; 
dataValidation.SuppressDropDownArrow = true; 
dataValidation.ErrorStyle = 0; 
dataValidation.CreateErrorBox("InvalidValue", "Number Should be a integer."); 
dataValidation.ShowErrorBox = true; 
dataValidation.CreatePromptBox("Number Data Validation", "Enter Number."); 
dataValidation.ShowPromptBox = true; 
sheet.AddValidationData(dataValidation); 
sheet.SetDefaultColumnStyle(column, numberCellStyle);

同样的范围验证尝试

dvConstraint = (XSSFDataValidationConstraint)validationHelper.CreateintConstraint(OperatorType.BETWEEN, "0", "10");

我已经巩固类似的例子成NPOI一个文档。它涵盖了各种类型的数据验证和约束。文档还包括约束的总字符数超过255个字符的情况。

来源

2017-08-28 14:10:33

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