/// <summary>
/// DataTable导出到Excel的MemoryStream
/// </summary>
/// <param name="dtSource">源DataTable</param>
/// <param name="strHeaderText">表头文本</param>
public static MemoryStream Export(DataTable dtSource, string strHeaderText, string passaord = null)
{
HSSFWorkbook workbook = new HSSFWorkbook();
NPOI.SS.UserModel.ISheet sheet = workbook.CreateSheet();
if (string.IsNullOrEmpty(passaord) == false)
{
sheet.ProtectSheet(passaord);
}
#region 右击文件 属性信息
{
DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();
dsi.Company = "NPOI";
workbook.DocumentSummaryInformation = dsi;
SummaryInformation si = PropertySetFactory.CreateSummaryInformation();
si.Author = "文件作者信息"; //填加xls文件作者信息
si.ApplicationName = "创建程序信息"; //填加xls文件创建程序信息
si.LastAuthor = "最后保存者信息"; //填加xls文件最后保存者信息
si.Comments = "作者信息"; //填加xls文件作者信息
si.Title = "标题信息"; //填加xls文件标题信息
si.Subject = "主题信息"; //填加文件主题信息
si.CreateDateTime = DateTime.Now;
workbook.SummaryInformation = si;
}
#endregion
NPOI.SS.UserModel.ICellStyle dateStyle = workbook.CreateCellStyle();
NPOI.SS.UserModel.IDataFormat format = workbook.CreateDataFormat();
dateStyle.DataFormat = format.GetFormat("yyyy-mm-dd");
//取得列宽
int[] arrColWidth = new int[dtSource.Columns.Count];
foreach (DataColumn item in dtSource.Columns)
{
arrColWidth[item.Ordinal] = Encoding.GetEncoding(936).GetBytes(item.ColumnName.ToString()).Length;
}
for (int i = 0; i < dtSource.Rows.Count; i++)
{
for (int j = 0; j < dtSource.Columns.Count; j++)
{
int intTemp = Encoding.GetEncoding(936).GetBytes(dtSource.Rows[i][j].ToString()).Length;
if (intTemp > arrColWidth[j])
{
arrColWidth[j] = intTemp;
}
}
}
int rowIndex = 0;
foreach (DataRow row in dtSource.Rows)
{
#region 新建表，填充表头，填充列头，样式
if (rowIndex == 65535 || rowIndex == 0)
{
if (rowIndex != 0)
{
sheet = workbook.CreateSheet();
if (string.IsNullOrEmpty(passaord) == false)
{
sheet.ProtectSheet(passaord);
}
}
#region 表头及样式
{
if (string.IsNullOrEmpty(strHeaderText) == false)
{
NPOI.SS.UserModel.IRow headerRow = sheet.CreateRow(0);
headerRow.HeightInPoints = 25;
headerRow.CreateCell(0).SetCellValue(strHeaderText);
NPOI.SS.UserModel.ICellStyle headStyle = workbook.CreateCellStyle();
headStyle.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;
NPOI.SS.UserModel.IFont font = workbook.CreateFont();
font.FontHeightInPoints = 20;
font.Boldweight = 700;
headStyle.SetFont(font);
headerRow.GetCell(0).CellStyle = headStyle;
sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 0, 0, dtSource.Columns.Count - 1));
rowIndex += 1;
}
//headerRow.Dispose();
}
#endregion
#region 列头及样式
{
NPOI.SS.UserModel.IRow headerRow = sheet.CreateRow(rowIndex);
NPOI.SS.UserModel.ICellStyle headStyle = workbook.CreateCellStyle();
headStyle.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;
NPOI.SS.UserModel.IFont font = workbook.CreateFont();
font.FontHeightInPoints = 10;
font.Boldweight = 700;
headStyle.SetFont(font);
foreach (DataColumn column in dtSource.Columns)
{
headerRow.CreateCell(column.Ordinal).SetCellValue(column.ColumnName);
headerRow.GetCell(column.Ordinal).CellStyle = headStyle;
//设置列宽
sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + 1) * 256);
}
//headerRow.Dispose();
rowIndex += 1;
}
#endregion
}
#endregion
#region 填充内容
NPOI.SS.UserModel.IRow dataRow = sheet.CreateRow(rowIndex);
foreach (DataColumn column in dtSource.Columns)
{
NPOI.SS.UserModel.ICell newCell = dataRow.CreateCell(column.Ordinal);
string drValue = row[column].ToString();
switch (column.DataType.ToString())
{
case "System.String": //字符串类型
newCell.SetCellValue(drValue);
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);
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);
break;
case "System.Decimal": //浮点型
case "System.Double":
double doubV = 0;
double.TryParse(drValue, out doubV);
newCell.SetCellValue(doubV);
break;
case "System.DBNull": //空值处理
newCell.SetCellValue("");
break;
default:
newCell.SetCellValue("");
break;
}
}
#endregion
rowIndex++;
}
using (MemoryStream ms = new MemoryStream())
{
workbook.Write(ms);
ms.Flush();
ms.Position = 0;
// sheet.Dispose();
//workbook.Dispose();//一般只用写这一个就OK了，他会遍历并释放所有资源，但当前版本有问题所以只释放sheet
return(ms);
}
}
public string ExportAccountTemplate(SaveFileDialog sflg, DataTable dt)
{
string message = string.Empty;
try
{
string filename = sflg.FileName;
NPOI.SS.UserModel.IWorkbook book = null;
if (sflg.FilterIndex == 1)
{
book = new NPOI.HSSF.UserModel.HSSFWorkbook();
}
else
{
book = new NPOI.XSSF.UserModel.XSSFWorkbook();
}
//整体样式
ICellStyle style = book.CreateCellStyle();
style.FillPattern = FillPattern.NoFill;
style.VerticalAlignment = NPOI.SS.UserModel.VerticalAlignment.Top;
style.WrapText = true;
IFont font = book.CreateFont();
font.FontHeightInPoints = 10;
font.FontName = "宋体";
style.SetFont(font);
//style.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
//style.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
//style.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
//style.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
//一般样式
ICellStyle style_center = book.CreateCellStyle();
style_center.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;
style_center.VerticalAlignment = VerticalAlignment.Center;
style_center.WrapText = true;
//style_center.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
//style_center.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
//style_center.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
//style_center.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
//一般样式
ICellStyle style_left = book.CreateCellStyle();
style_left.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Left;
style_left.WrapText = true;
//style_left.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
//style_left.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
//style_left.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
//style_left.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
NPOI.SS.UserModel.ISheet sheet = book.CreateSheet("清算信息汇总");
sheet.DefaultRowHeight = 20;
for (int columnNum = 0; columnNum < 11; columnNum++)
{
sheet.SetDefaultColumnStyle(columnNum, style);
}
int rowIndex = 0;
#region 添加表头
NPOI.SS.UserModel.IRow rowName = sheet.CreateRow(rowIndex);
rowName.CreateCell(0, CellType.String).SetCellValue("地区");
rowName.CreateCell(1, CellType.String).SetCellValue("序号");
rowName.CreateCell(2, CellType.String).SetCellValue("车辆生产企业");
rowName.CreateCell(3, CellType.String).SetCellValue("车辆型号");
rowName.CreateCell(4, CellType.Numeric).SetCellValue("企业申报推广数");
rowName.CreateCell(5, CellType.Numeric).SetCellValue("企业申请补助标准");
rowName.CreateCell(6, CellType.Numeric).SetCellValue("企业申请清算资金");
rowName.CreateCell(7, CellType.Numeric).SetCellValue("专家组核定的推广数");
rowName.CreateCell(8, CellType.Numeric).SetCellValue("专家组核定的补助标准");
rowName.CreateCell(9, CellType.Numeric).SetCellValue("应清算补助资金");
rowName.CreateCell(10, CellType.String).SetCellValue("核减原因");
rowIndex++;
#endregion
#region 添加数据
int dealerNum = 0;
//第一行总计
var countENTNum = (from DataRow row in dt.Rows select new { ent_num = row["ENT_NUM"] }).Sum(a => Convert.ToDecimal(a.ent_num));
var countENTMoney = (from DataRow row in dt.Rows select new { ent_money = row["SQBZBZ"] }).Sum(a => Convert.ToDecimal(a.ent_money));
var countENTCount = (from DataRow row in dt.Rows select new { ent_count = row["ENT_COUNT"] }).Sum(a => Convert.ToDecimal(a.ent_count));
var countAPPNum = (from DataRow row in dt.Rows select new { app_num = row["APP_NUM"] }).Sum(a => Convert.ToDecimal(a.app_num));
var countAPPMoney = (from DataRow row in dt.Rows select new { app_money = row["APP_MONEY"] }).Sum(a => Convert.ToDecimal(a.app_money));
var countAPPCount = (from DataRow row in dt.Rows select new { app_count = row["APP_COUNT"] }).Sum(a => Convert.ToDecimal(a.app_count));
IRow rowTotal = sheet.CreateRow(rowIndex);
ICell cellTotal = rowTotal.CreateCell(0);
cellTotal.SetCellValue("总计");
cellTotal.CellStyle = style_center;
sheet.AddMergedRegion(new CellRangeAddress(rowIndex, rowIndex, 0, 3));
rowTotal.CreateCell(4, CellType.String).SetCellValue(countENTNum.ToString());
rowTotal.CreateCell(5, CellType.String).SetCellValue(countENTMoney.ToString());
rowTotal.CreateCell(6, CellType.String).SetCellValue(countENTCount.ToString());
rowTotal.CreateCell(7, CellType.String).SetCellValue(countAPPNum.ToString());
rowTotal.CreateCell(8, CellType.String).SetCellValue(countAPPMoney.ToString());
rowTotal.CreateCell(9, CellType.String).SetCellValue(countAPPCount.ToString());
rowIndex++;
#region 循环省份写入
var ProvinceList = dt.AsEnumerable().Select(d => d.Field <string>("DQ")).Distinct().ToList();
for (int i = 0; i < ProvinceList.Count(); i++)
{
dealerNum = 1;
//地区 省份
int DealerCount = dt.AsEnumerable().Where(d => d.Field <string>("DQ") == ProvinceList[i]).Select(d => d.Field <string>("CLSCQY")).Distinct().Count();
int ClxhCount = dt.AsEnumerable().Where(d => d.Field <string>("DQ") == ProvinceList[i]).Select(d => d.Field <string>("CLXH")).Count();
sheet.AddMergedRegion(new CellRangeAddress(rowIndex, rowIndex + ClxhCount + DealerCount, 0, 0));
IRow rowSFTotal = sheet.CreateRow(rowIndex);
ICell cellSF = rowSFTotal.CreateCell(0);
cellSF.SetCellValue(ProvinceList[i]);
#region 省份合计
// IRow rowSFTotal = sheet.CreateRow(rowIndex);
var dvShengfen = dt.DefaultView;
dvShengfen.RowFilter = String.Format("DQ='{0}'", ProvinceList[i]);
var dtShengfen = dvShengfen.ToTable();
var sum_ENT_NUM = Convert.ToDecimal(dtShengfen.Compute("sum(ENT_NUM)", "TRUE"));
var sum_SQBZBZ = dtShengfen.Compute("sum(SQBZBZ)", "TRUE");
var sum_ENT_COUNT = dtShengfen.Compute("sum(ENT_COUNT)", "TRUE");
var sum_APP_NUM = dtShengfen.Compute("sum(APP_NUM)", "TRUE");
var sum_APP_MONEY = dtShengfen.Compute("sum(APP_MONEY)", "TRUE");
var sum_APP_COUNT = dtShengfen.Compute("sum(APP_COUNT)", "TRUE");
sheet.AddMergedRegion(new CellRangeAddress(rowIndex, rowIndex, 1, 3));
ICell cellSFTotal = rowSFTotal.CreateCell(1);
cellSFTotal.SetCellValue("合计");
cellSFTotal.CellStyle = style_center;
rowSFTotal.CreateCell(4, CellType.String).SetCellValue(sum_ENT_NUM.ToString());
rowSFTotal.CreateCell(5, CellType.String).SetCellValue(sum_SQBZBZ.ToString());
rowSFTotal.CreateCell(6, CellType.String).SetCellValue(sum_ENT_COUNT.ToString());
rowSFTotal.CreateCell(7, CellType.String).SetCellValue(sum_APP_NUM.ToString());
rowSFTotal.CreateCell(8, CellType.String).SetCellValue(sum_APP_MONEY.ToString());
rowSFTotal.CreateCell(9, CellType.String).SetCellValue(sum_APP_COUNT.ToString());
rowIndex++;
#endregion
#region 照汽车生产企业写入
var DealerList = dt.AsEnumerable().Where(d => d.Field <string>("DQ") == ProvinceList[i]).Select(d => d.Field <string>("CLSCQY")).Distinct().ToList();
for (int j = 0; j < DealerList.Count(); j++)
{
//企业序号
int DealerClxhCount = dt.AsEnumerable().Where(d => d.Field <string>("DQ") == ProvinceList[i] && d.Field <string>("CLSCQY") == DealerList[j]).Select(d => d.Field <string>("CLXH")).Count();
sheet.AddMergedRegion(new CellRangeAddress(rowIndex, rowIndex + DealerClxhCount, 1, 1));
IRow rowDealerTotal = sheet.CreateRow(rowIndex);
ICell cellDealerNum = rowDealerTotal.CreateCell(1);
cellDealerNum.SetCellValue(dealerNum);
//企业名称
sheet.AddMergedRegion(new CellRangeAddress(rowIndex, rowIndex + DealerClxhCount, 2, 2));
ICell cellDealer = rowDealerTotal.CreateCell(2);
cellDealer.SetCellValue(DealerList[j]);
//企业小计
var dvDealer = dt.DefaultView;
dvDealer.RowFilter = String.Format("CLSCQY='{0}' AND DQ = '{1}'", DealerList[j], ProvinceList[i]);
var dtDealer = dvDealer.ToTable();
var dealer_ENT_NUM = dtDealer.Compute("sum(ENT_NUM)", "TRUE");
var dealer_SQBZBZ = dtDealer.Compute("sum(SQBZBZ)", "TRUE");
var dealer_ENT_COUNT = dtDealer.Compute("sum(ENT_COUNT)", "TRUE");
var dealer_APP_NUM = dtDealer.Compute("sum(APP_NUM)", "TRUE");
var dealer_APP_MONEY = dtDealer.Compute("sum(APP_MONEY)", "TRUE");
var dealer_APP_COUNT = dtDealer.Compute("sum(APP_COUNT)", "TRUE");
rowDealerTotal.CreateCell(3, CellType.String).SetCellValue("小计");
rowDealerTotal.CreateCell(4, CellType.String).SetCellValue(dealer_ENT_NUM.ToString());
rowDealerTotal.CreateCell(5, CellType.String).SetCellValue(dealer_SQBZBZ.ToString());
rowDealerTotal.CreateCell(6, CellType.String).SetCellValue(dealer_ENT_COUNT.ToString());
rowDealerTotal.CreateCell(7, CellType.String).SetCellValue(dealer_APP_NUM.ToString());
rowDealerTotal.CreateCell(8, CellType.String).SetCellValue(dealer_APP_MONEY.ToString());
rowDealerTotal.CreateCell(9, CellType.String).SetCellValue(dealer_APP_COUNT.ToString());
rowIndex++;
//按照车辆型号写入
var detailData = dt.AsEnumerable().Where(d => d.Field <string>("DQ") == ProvinceList[i] && d.Field <string>("CLSCQY") == DealerList[j]).CopyToDataTable();
for (int k = 0; k < detailData.Rows.Count; k++)
{
IRow rowDealer = sheet.CreateRow(rowIndex);
rowDealer.CreateCell(3, CellType.String).SetCellValue(detailData.Rows[k]["CLXH"].ToString());
rowDealer.CreateCell(4, CellType.String).SetCellValue(detailData.Rows[k]["ENT_NUM"].ToString());
rowDealer.CreateCell(5, CellType.String).SetCellValue(detailData.Rows[k]["SQBZBZ"].ToString());
rowDealer.CreateCell(6, CellType.String).SetCellValue(detailData.Rows[k]["ENT_COUNT"].ToString());
rowDealer.CreateCell(7, CellType.String).SetCellValue(detailData.Rows[k]["APP_NUM"].ToString());
rowDealer.CreateCell(8, CellType.String).SetCellValue(detailData.Rows[k]["APP_MONEY"].ToString());
rowDealer.CreateCell(9, CellType.String).SetCellValue(detailData.Rows[k]["APP_COUNT"].ToString());
rowDealer.CreateCell(10, CellType.String).SetCellValue(detailData.Rows[k]["APP_RESULT"].ToString());
rowDealer.Cells[7].CellStyle = style_left;
rowIndex++;
}
dealerNum++;
}
#endregion
}
for (int colNum = 0; colNum <= 10; colNum++)
{
int columnWidth = sheet.GetColumnWidth(colNum) / 256;
for (int rowNum = 0; rowNum < sheet.LastRowNum; rowNum++)
{
IRow currentRow = sheet.GetRow(rowNum);
ICell currentCell = currentRow.GetCell(colNum);
if (currentCell != null)
{
int length = Encoding.UTF8.GetBytes(currentCell.ToString()).Length;
if (columnWidth < length + 1)
{
columnWidth = length + 1 > 254 ? 255 : length + 1;
}
currentRow.HeightInPoints = 20;
}
}
sheet.SetColumnWidth(colNum, columnWidth * 256);
}
sheet.ProtectSheet("1");
#endregion
#endregion
System.IO.MemoryStream ms = new System.IO.MemoryStream();
book.Write(ms);
book = null;
using (FileStream fs = new FileStream(filename, FileMode.Create, FileAccess.Write))
{
byte[] data = ms.ToArray();
fs.Write(data, 0, data.Length);
fs.Flush();
}
ms.Close();
ms.Dispose();
}
catch (Exception ex)
{
message = ex.Message;
}
return(message);
}