#region 单元格数据生成通用类private static int CreateDataMethod(ISheet sheet1, ICellStyle style, DataTable dtGetRowTable, int rowIndex, HSSFCellStyle dateStyle){foreach (DataRow row in dtGetRowTable.Rows){#region 填充内容HSSFRow dataRow = sheet1.CreateRow(rowIndex) as HSSFRow;foreach (DataColumn column in dtGetRowTable.Columns){HSSFCell newCell = dataRow.CreateCell(column.Ordinal) as HSSFCell;string drValue = row[column].ToString();#region 字段类型处理switch (column.DataType.ToString()){case "System.String": //字符串类型
                            newCell.SetCellValue(drValue);newCell.CellStyle = style;break;case "System.DateTime": //日期类型
                            DateTime dateV;DateTime.TryParse(drValue, out dateV);newCell.SetCellValue(dateV);newCell.CellStyle = dateStyle; //格式化显示break;case "System.Boolean": //布尔型bool boolV = false;bool.TryParse(drValue, out boolV);newCell.SetCellValue(boolV);newCell.CellStyle = style;break;case "System.Int16": //整型case "System.Int32":case "System.Int64":case "System.Byte":int intV = 0;int.TryParse(drValue, out intV);newCell.SetCellValue(intV);newCell.CellStyle = style;break;case "System.Decimal": //浮点型case "System.Double":double doubV = 0;double.TryParse(drValue, out doubV);newCell.SetCellValue(doubV);newCell.CellStyle = style;break;case "System.DBNull": //空值处理newCell.SetCellValue("");newCell.CellStyle = style;break;default:newCell.SetCellValue(drValue);newCell.CellStyle = style;break;}#endregion#region 插入留余空白列int iLastCell = sheet1.GetRow(4).LastCellNum + 1 - dtGetRowTable.Columns.Count;for (int i = 1; i < iLastCell; i++){HSSFCell newNullCell = dataRow.CreateCell(newCell.ColumnIndex + i) as HSSFCell;newNullCell.SetCellValue("");newNullCell.CellStyle = style;}#endregion}#endregionrowIndex++;}return rowIndex;} #endregion