NPOI的导出、样式设置、合并相同单元格

//创建Excel文件的对象
HSSFWorkbook workbook = new HSSFWorkbook();
//添加一个sheet
ISheet sheet = workbook.CreateSheet("Sheet1");
sheet.DefaultRowHeight = 300;
//创建标题
IRow rowTitle = sheet.CreateRow(0);

//设置Title的样式
rowTitle.Height = 500;
ICellStyle styleTitle = workbook.CreateCellStyle();
styleTitle.Alignment = HorizontalAlignment.Center;
styleTitle.VerticalAlignment = VerticalAlignment.Center;
IFont fontTitle = workbook.CreateFont();
fontTitle.FontName = "宋体";
fontTitle.FontHeightInPoints = 18;
styleTitle.SetFont(fontTitle);
ICell cellTitle = rowTitle.CreateCell(0);
cellTitle.SetCellValue("文件"+ stratTime.Substring(0, 7));
cellTitle.CellStyle = styleTitle;
sheet.AddMergedRegion(new CellRangeAddress(0, 0, 0, 9)); //合并单元格

//创建表格样式
IFont font = workbook.CreateFont();
font.FontName = "宋体";
font.FontHeightInPoints = 10;
ICellStyle style = workbook.CreateCellStyle();
style.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
style.BottomBorderColor = HSSFColor.Black.Index;
style.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
style.LeftBorderColor = HSSFColor.Black.Index;
style.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
style.RightBorderColor = HSSFColor.Black.Index;
style.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
style.TopBorderColor = HSSFColor.Black.Index;
style.Alignment = HorizontalAlignment.Center;
style.SetFont(font);

//这是动销记录为0的样式
ICellStyle style1 = workbook.CreateCellStyle();
style1.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
style1.BottomBorderColor = HSSFColor.Black.Index;
style1.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
style1.LeftBorderColor = HSSFColor.Black.Index;
style1.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
style1.RightBorderColor = HSSFColor.Black.Index;
style1.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
style1.TopBorderColor = HSSFColor.Black.Index;
style1.Alignment = HorizontalAlignment.Center;
style1.VerticalAlignment = VerticalAlignment.Center;
style1.SetFont(font);
style1.FillForegroundColor = NPOI.HSSF.Util.HSSFColor.Yellow.Index;
style1.FillPattern = FillPattern.SolidForeground;

//公司和品牌的样式动销不为0
ICellStyle style2 = workbook.CreateCellStyle();
style2.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
style2.BottomBorderColor = HSSFColor.Black.Index;
style2.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
style2.LeftBorderColor = HSSFColor.Black.Index;
style2.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
style2.RightBorderColor = HSSFColor.Black.Index;
style2.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
style2.TopBorderColor = HSSFColor.Black.Index;
style2.Alignment = HorizontalAlignment.Left;
style2.VerticalAlignment = VerticalAlignment.Center;
style2.SetFont(font);
//公司和品牌样式动销记录为0
ICellStyle style3 = workbook.CreateCellStyle();
style3.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
style3.BottomBorderColor = HSSFColor.Black.Index;
style3.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
style3.LeftBorderColor = HSSFColor.Black.Index;
style3.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
style3.RightBorderColor = HSSFColor.Black.Index;
style3.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
style3.TopBorderColor = HSSFColor.Black.Index;
style3.Alignment = HorizontalAlignment.Left;
style3.VerticalAlignment = VerticalAlignment.Center;
style3.SetFont(font);
style3.FillForegroundColor = NPOI.HSSF.Util.HSSFColor.Yellow.Index;
style3.FillPattern = FillPattern.SolidForeground;

//创建表头
IRow rowHead = sheet.CreateRow(1);
rowHead.CreateCell(0).SetCellValue("街道");
rowHead.GetCell(0).CellStyle = style;//指定样式
sheet.SetColumnWidth(0, 256 * 25);

rowHead.CreateCell(1).SetCellValue("公司");
rowHead.GetCell(1).CellStyle = style;
sheet.SetColumnWidth(1, 256 * 30);

rowHead.CreateCell(2).SetCellValue("品牌");
rowHead.GetCell(2).CellStyle = style;
sheet.SetColumnWidth(2, 256 * 30);

rowHead.CreateCell(3).SetCellValue("当月最后动销时间");
rowHead.GetCell(3).CellStyle = style;
sheet.SetColumnWidth(3, 256 * 15);

rowHead.CreateCell(4).SetCellValue("供应商数量");
rowHead.GetCell(4).CellStyle = style;
sheet.SetColumnWidth(4, 256 * 15);
rowHead.CreateCell(5).SetCellValue("商品总量");
rowHead.GetCell(5).CellStyle = style;
sheet.SetColumnWidth(5, 256 * 15);
rowHead.CreateCell(6).SetCellValue("当月入库总量");
rowHead.GetCell(6).CellStyle = style;
sheet.SetColumnWidth(6, 256 * 15);
rowHead.CreateCell(7).SetCellValue("当月出库总量");
rowHead.GetCell(7).CellStyle = style;
sheet.SetColumnWidth(7, 256 * 15);
rowHead.CreateCell(8).SetCellValue("当月动销记录");
rowHead.GetCell(8).CellStyle = style;
sheet.SetColumnWidth(8, 256 * 15);
rowHead.CreateCell(9).SetCellValue("是否录入零度");
rowHead.GetCell(9).CellStyle = style;
sheet.SetColumnWidth(9, 256 * 15);

int rowindex = 2;
foreach (var item in query)
{
IRow rowContent = sheet.CreateRow(rowindex);//创建新行
if (item.CountDX == 0)
{
rowContent.CreateCell(0).SetCellValue(item.Street.ToString());
rowContent.GetCell(0).CellStyle = style1;
rowContent.CreateCell(1).SetCellValue(Convert.ToString(item.Compnay));
rowContent.GetCell(1).CellStyle = style3;
rowContent.CreateCell(2).SetCellValue(Convert.ToString(item.Brand));
rowContent.GetCell(2).CellStyle = style3;
rowContent.CreateCell(3).SetCellValue(Convert.ToString(item.DateDX));
rowContent.GetCell(3).CellStyle = style1;
rowContent.CreateCell(4).SetCellValue(Convert.ToString(item.Supplier));
rowContent.GetCell(4).CellStyle = style1;
rowContent.CreateCell(5).SetCellValue(Convert.ToString(item.ProductCount));
rowContent.GetCell(5).CellStyle = style1;
rowContent.CreateCell(6).SetCellValue(Convert.ToString(item.WarehousingCount));
rowContent.GetCell(6).CellStyle = style1;
rowContent.CreateCell(7).SetCellValue(Convert.ToString(item.checkout));
rowContent.GetCell(7).CellStyle = style1;
rowContent.CreateCell(8).SetCellValue(Convert.ToString(item.CountDX));
rowContent.GetCell(8).CellStyle = style1;
rowContent.CreateCell(9).SetCellValue(Convert.ToString(item.Reading));
rowContent.GetCell(9).CellStyle = style1;
}
else
{
rowContent.CreateCell(0).SetCellValue(item.Street.ToString());
rowContent.GetCell(0).CellStyle = style;
rowContent.CreateCell(1).SetCellValue(Convert.ToString(item.Compnay));
rowContent.GetCell(0).CellStyle = style2;
rowContent.CreateCell(2).SetCellValue(Convert.ToString(item.Brand));
rowContent.GetCell(0).CellStyle = style2;
rowContent.CreateCell(3).SetCellValue(Convert.ToString(item.DateDX));
rowContent.GetCell(3).CellStyle = style;
rowContent.CreateCell(4).SetCellValue(Convert.ToString(item.Supplier));
rowContent.GetCell(4).CellStyle = style;
rowContent.CreateCell(5).SetCellValue(Convert.ToString(item.ProductCount));
rowContent.GetCell(5).CellStyle = style;
rowContent.CreateCell(6).SetCellValue(Convert.ToString(item.WarehousingCount));
rowContent.GetCell(6).CellStyle = style;
rowContent.CreateCell(7).SetCellValue(Convert.ToString(item.checkout));
rowContent.GetCell(7).CellStyle = style;
rowContent.CreateCell(8).SetCellValue(Convert.ToString(item.CountDX));
rowContent.GetCell(8).CellStyle = style;
rowContent.CreateCell(9).SetCellValue(Convert.ToString(item.Reading));
rowContent.GetCell(9).CellStyle = style;
}
rowindex++;
}
IRow rowContent2 = sheet.CreateRow(rowindex + 2);//创建新行
rowContent2.CreateCell(0).SetCellValue("代表动销记录为0");
rowContent2.CreateCell(1).SetCellValue("");
rowContent2.CreateCell(2).SetCellValue("制表日期" + System.DateTime.Now.ToString("yyyyMMdd"));
rowContent2.CreateCell(3).SetCellValue("");

sheet.AddMergedRegion(new CellRangeAddress(rowindex + 2, rowindex + 2, 2, 3)); //合并单元格
rowContent2.GetCell(0).CellStyle = style1;
rowContent2.GetCell(2).CellStyle = style1;
rowContent2.GetCell(3).CellStyle = style1;

//合并单元格样式
ICellStyle cellstyle = workbook.CreateCellStyle();
cellstyle.VerticalAlignment = VerticalAlignment.Center;
cellstyle.Alignment = HorizontalAlignment.Center;
//合并行
int count = query.Count() + 2;//总计单元行数
for (int i = 0; i < count; i++)
{
//获取当前行第0列
string value = sheet.GetRow(i).GetCell(0).StringCellValue;

int end = i;
//找到结束为止
for (int j = i + 1; j < count; j++)
{
//获取下一行行第0列
string value1 = sheet.GetRow(j).GetCell(0).StringCellValue;
if (value != value1)
{
end = j - 1;
break;
}
else if (value == value1 || j == query.Count())
{
end = j;

}
}

sheet.AddMergedRegion(new CellRangeAddress(i, end, 0, 0));//和并单元格
var cell = sheet.GetRow(i).GetCell(0);
cell.CellStyle = cellstyle;
i = end;
}
// 写入到客户端 
System.IO.MemoryStream ms = new System.IO.MemoryStream();
workbook.Write(ms);
ms.Seek(0, SeekOrigin.Begin);