如何将某些Excel列锁定为NPOI Excel工作表的只读

Question

无法将NPOI Excel工作表设置为某些列为只读 我曾尝试创建冻结（sheet1.CreateFreezePane（0，1，0，1）;），但无法正常工作

    public void WriteExcelWithNPOI(DataTable dt, String extension,string MSANAme,string CheckValue)
    {

        IWorkbook workbook;

        if (extension == "xlsx")
        {
            workbook = new XSSFWorkbook();
        }
        else if (extension == "xls")
        {
            workbook = new HSSFWorkbook();
        }
        else
        {
            throw new Exception("This format is not supported");
        }

        ISheet sheet1 = workbook.CreateSheet("Sheet 1");
        //make a header row
        IRow row1 = sheet1.CreateRow(0);



        for (int j = 0; j < dt.Columns.Count; j++)
        {

            ICell cell = row1.CreateCell(j);
            String columnName = dt.Columns[j].ToString();
            cell.SetCellValue(columnName);
        }

        //loops through data
        for (int i = 0; i < dt.Rows.Count; i++)
        {
            IRow row = sheet1.CreateRow(i + 1);
            for (int j = 0; j < dt.Columns.Count; j++)
            {

                ICell cell = row.CreateCell(j);
                String columnName = dt.Columns[j].ToString();
                cell.SetCellValue(dt.Rows[i][columnName].ToString());
            }
        }

        using (var exportData = new MemoryStream())
        {
            Response.Clear();
            workbook.Write(exportData);
            if (extension == "xlsx") //xlsx file format
            {
                Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
                Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0}" + MSANAme + CheckValue+ ".xlsx"));

                Response.BinaryWrite(exportData.ToArray());
            }
            else if (extension == "xls")  //xls file format
            {
                Response.ContentType = "application/vnd.ms-excel";
                Response.AddHeader("Content-Disposition", string.Format("attachment;filename="+ MSANAme + CheckValue + ".xls"));
                Response.BinaryWrite(exportData.GetBuffer());
            }
            Response.End();
        }
    }

所有excel列都是可编辑的，需要将某些列设置为只读。请帮忙。 所有的excel列都是可编辑的，需要将某些列设置为只读。请帮忙。 所有的excel列都是可编辑的，需要将某些列设置为只读。请帮忙。

Answer 1

我将假定您的代码正在运行，因此请以其为参考并对其进行编辑。

    public void WriteExcelWithNPOI(DataTable dt, String extension,string MSANAme,string CheckValue)
    {

        IWorkbook workbook;

        if (extension == "xlsx")
        {
            workbook = new XSSFWorkbook();
        }
        else if (extension == "xls")
        {
            workbook = new HSSFWorkbook();
        }
        else
        {
            throw new Exception("This format is not supported");
        }

        ISheet sheet1 = workbook.CreateSheet("Sheet 1");
        //make a header row
        IRow row1 = sheet1.CreateRow(0);

        var cellStyleForLocked = workbook.CreateCellStyle(); //create the style in the beginning itself
        cellStyleForLocked.IsLocked = true;

        for (int j = 0; j < dt.Columns.Count; j++)
        {

            ICell cell = row1.CreateCell(j);
            String columnName = dt.Columns[j].ToString();
            cell.SetCellValue(columnName);
        }

        //loops through data
        for (int i = 0; i < dt.Rows.Count; i++)
        {
            IRow row = sheet1.CreateRow(i + 1);
            for (int j = 0; j < dt.Columns.Count; j++)
            {

                ICell cell = row.CreateCell(j);
                String columnName = dt.Columns[j].ToString();

                if(j < 6) //set the locked style only for first 6 columns.
                    cell.CellStyle = cellStyleForLocked;

                cell.SetCellValue(dt.Rows[i][columnName].ToString());
            }
        }

        using (var exportData = new MemoryStream())
        {
            Response.Clear();
            workbook.Write(exportData);
            if (extension == "xlsx") //xlsx file format
            {
                Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
                Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0}" + MSANAme + CheckValue+ ".xlsx"));

                Response.BinaryWrite(exportData.ToArray());
            }
            else if (extension == "xls")  //xls file format
            {
                Response.ContentType = "application/vnd.ms-excel";
                Response.AddHeader("Content-Disposition", string.Format("attachment;filename="+ MSANAme + CheckValue + ".xls"));
                Response.BinaryWrite(exportData.GetBuffer());
            }
            Response.End();
        }
    }

希望它对您有用！