NOPI Excel插件导入导出 图片批注
2024-04-02 03:18:57
dateTable导出到excel的MemoryStream
/// <summary>
/// DataTable导出到Excel的MemoryStream Export()
/// </summary>
/// <param name="dtSource">DataTable数据源</param>
/// <param name="excelConfig">导出设置包含文件名、标题、列设置</param>
/// <param name="isRemoveColumns"></param>
public static MemoryStream ExportMemoryStream(DataTable dtSource, ExcelConfig excelConfig, bool isRemoveColumns = false)
{
if (isRemoveColumns)
{
int colint = ;
for (int i = ; i < dtSource.Columns.Count; )
{
DataColumn column = dtSource.Columns[i];
if (colint>=excelConfig.ColumnEntity.Count || excelConfig.ColumnEntity[colint].Column != column.ColumnName)
{
dtSource.Columns.Remove(column.ColumnName);
}
else
{
ColumnEntity columnentity = excelConfig.ColumnEntity.Find(t => t.Column == dtSource.Columns[i].ColumnName);
dtSource.Columns[i].ColumnName = columnentity.ExcelColumn;//修改列头名
i++;
colint++;
} }
} HSSFWorkbook workbook = new HSSFWorkbook();
ISheet sheet = workbook.CreateSheet(); #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 = "zdd"; //填加xls文件作者信息
si.ApplicationName = "XX系统"; //填加xls文件创建程序信息
si.LastAuthor = "zdd"; //填加xls文件最后保存者信息
si.Comments = "zdd"; //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 = System.DateTime.Now;
workbook.SummaryInformation = si;
}
#endregion #region 设置标题样式
ICellStyle headStyle = workbook.CreateCellStyle();
int[] arrColWidth = new int[dtSource.Columns.Count];
string[] arrColName = new string[dtSource.Columns.Count];//列名
ICellStyle[] arryColumStyle = new ICellStyle[dtSource.Columns.Count];//样式表
headStyle.Alignment = HorizontalAlignment.Center; // ------------------
if (excelConfig.Background != new Color())
{
if (excelConfig.Background != new Color())
{
headStyle.FillPattern = FillPattern.SolidForeground;
headStyle.FillForegroundColor = GetXLColour(workbook, excelConfig.Background);
}
}
IFont font = workbook.CreateFont();
font.FontHeightInPoints = excelConfig.TitlePoint;
if (excelConfig.ForeColor != new Color())
{
font.Color = GetXLColour(workbook, excelConfig.ForeColor);
}
font.Boldweight = ;
headStyle.SetFont(font);
#endregion #region 列头及样式
ICellStyle cHeadStyle = workbook.CreateCellStyle();
cHeadStyle.Alignment = HorizontalAlignment.Center; // ------------------
IFont cfont = workbook.CreateFont();
cfont.FontHeightInPoints = excelConfig.HeadPoint;
cHeadStyle.SetFont(cfont);
#endregion #region 设置内容单元格样式
foreach (DataColumn item in dtSource.Columns)
{
ICellStyle columnStyle = workbook.CreateCellStyle();
columnStyle.Alignment = HorizontalAlignment.Center;
arrColWidth[item.Ordinal] = Encoding.GetEncoding().GetBytes(item.ColumnName.ToString()).Length;
arrColName[item.Ordinal] = item.ColumnName.ToString();
if (excelConfig.ColumnEntity != null)
{
ColumnEntity columnentity = excelConfig.ColumnEntity.Find(t => t.Column == item.ColumnName);
if (columnentity != null)
{
arrColName[item.Ordinal] = columnentity.ExcelColumn;
if (columnentity.Width != )
{
arrColWidth[item.Ordinal] = columnentity.Width;
}
if (columnentity.Background != new Color())
{
if (columnentity.Background != new Color())
{
columnStyle.FillPattern = FillPattern.SolidForeground;
columnStyle.FillForegroundColor = GetXLColour(workbook, columnentity.Background);
}
}
if (columnentity.Font != null || columnentity.Point != || columnentity.ForeColor != new Color())
{
IFont columnFont = workbook.CreateFont();
columnFont.FontHeightInPoints = ;
if (columnentity.Font != null)
{
columnFont.FontName = columnentity.Font;
}
if (columnentity.Point != )
{
columnFont.FontHeightInPoints = columnentity.Point;
}
if (columnentity.ForeColor != new Color())
{
columnFont.Color = GetXLColour(workbook, columnentity.ForeColor);
}
columnStyle.SetFont(font);
}
columnStyle.Alignment = getAlignment(columnentity.Alignment);
}
}
arryColumStyle[item.Ordinal] = columnStyle;
}
if (excelConfig.IsAllSizeColumn)
{
#region 根据列中最长列的长度取得列宽
for (int i = ; i < dtSource.Rows.Count; i++)
{
for (int j = ; j < dtSource.Columns.Count; j++)
{
if (arrColWidth[j] != )
{
int intTemp = Encoding.GetEncoding().GetBytes(dtSource.Rows[i][j].ToString()).Length;
if (intTemp > arrColWidth[j])
{
arrColWidth[j] = intTemp;
}
} }
}
#endregion
}
#endregion #region 填充数据 #endregion ICellStyle dateStyle = workbook.CreateCellStyle();
IDataFormat format = workbook.CreateDataFormat();
dateStyle.DataFormat = format.GetFormat("yyyy-mm-dd");
int rowIndex = ;
foreach (DataRow row in dtSource.Rows)
{
#region 新建表，填充表头，填充列头，样式
if (rowIndex == || rowIndex == )
{
if (rowIndex != )
{
sheet = workbook.CreateSheet();
} #region 表头及样式
{
if (excelConfig.Title != null)
{
IRow headerRow = sheet.CreateRow();
if (excelConfig.TitleHeight != )
{
headerRow.Height = (short)(excelConfig.TitleHeight * );
}
headerRow.HeightInPoints = ;
headerRow.CreateCell().SetCellValue(excelConfig.Title);
headerRow.GetCell().CellStyle = headStyle;
sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(, , , dtSource.Columns.Count - )); // ------------------
} }
#endregion #region 列头及样式
{
IRow headerRow = sheet.CreateRow();
#region 如果设置了列标题就按列标题定义列头，没定义直接按字段名输出
foreach (DataColumn column in dtSource.Columns)
{
headerRow.CreateCell(column.Ordinal).SetCellValue(arrColName[column.Ordinal]);
headerRow.GetCell(column.Ordinal).CellStyle = cHeadStyle;
//设置列宽
sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + ) * );
}
#endregion
}
#endregion rowIndex = ;
}
#endregion #region 填充内容
IRow dataRow = sheet.CreateRow(rowIndex); foreach (DataColumn column in dtSource.Columns)
{
ICell newCell = dataRow.CreateCell(column.Ordinal);
newCell.CellStyle = arryColumStyle[column.Ordinal];
string drValue = row[column].ToString(); //如果是图片列
if (column.ToString() == "图片")
{ string tPath = DirFileHelper.MapPath("/ExportFile/ImageFiles/");//服务器图片存储目录
if (!DirFileHelper.IsExistDirectory(tPath))//判断是否存在此目录 无则创建
{
DirFileHelper.CreateDir("/ExportFile/ImageFiles/");//创建临时存储压缩后图片路径
}
string filePath = SharedImagePath + drValue;
string newImagePath = tPath + drValue;//压缩后图片绝对路径
if (DirFileHelper.IsExistFile(newImagePath))//若果本地已存在 则不从100共享盘中取图片
{
byte[] bytes = System.IO.File.ReadAllBytes(newImagePath);
int pictureIndex = workbook.AddPicture(bytes, PictureType.JPEG);
HSSFPatriarch par = sheet.CreateDrawingPatriarch() as HSSFPatriarch; HSSFClientAnchor anchor = new HSSFClientAnchor
{
Dx1 = ,//起始单元格的x偏移量，如例子中的255表示直线起始位置距A1单元格左侧的距离；
Dy1 = ,//起始单元格的y偏移量，如例子中的125表示直线起始位置距A1单元格上侧的距离；
Dx2 = ,//终止单元格的x偏移量，如例子中的1023表示直线起始位置距C3单元格左侧的距离；
Dy2 = ,//：终止单元格的y偏移量，如例子中的150表示直线起始位置距C3单元格上侧的距离；
Col1 = column.Ordinal +, //批注起始位置的纵坐标（当前单元格位置+2）
Col2 = column.Ordinal + , //批注结束位置的纵坐标
Row1 = column.Ordinal + , //批注起始位置的横坐标
Row2 = column.Ordinal + //批注结束位置的横坐标
};
HSSFComment comment = par.CreateComment(anchor);
comment.SetBackgroundImage(pictureIndex);
newCell.CellComment = comment;
}
else//取100共享盘图片并压缩指定大小
{
if (DirFileHelper.IsExistFile(filePath))//需要增加判断是否存在此图片
{
ImageHelper.CreateMinImageAndDel(filePath, , , tPath);//压缩指定大小图片
byte[] bytes = System.IO.File.ReadAllBytes(newImagePath);
int pictureIndex = workbook.AddPicture(bytes, PictureType.JPEG);
HSSFPatriarch par = sheet.CreateDrawingPatriarch() as HSSFPatriarch;
HSSFClientAnchor anchor = new HSSFClientAnchor
{
Dx1 = ,//起始单元格的x偏移量，如例子中的255表示直线起始位置距A1单元格左侧的距离；
Dy1 = ,//起始单元格的y偏移量，如例子中的125表示直线起始位置距A1单元格上侧的距离；
Dx2 = ,//终止单元格的x偏移量，如例子中的1023表示直线起始位置距C3单元格左侧的距离；
Dy2 = ,//：终止单元格的y偏移量，如例子中的150表示直线起始位置距C3单元格上侧的距离；
Col1 = column.Ordinal + , //批注起始位置的纵坐标（当前单元格位置+2）
Col2 = column.Ordinal + , //批注结束位置的纵坐标
Row1 = column.Ordinal + , //批注起始位置的横坐标
Row2 = column.Ordinal + //批注结束位置的横坐标
};
HSSFComment comment = par.CreateComment(anchor);
comment.SetBackgroundImage(pictureIndex);
}
}
//newCell.SetCellValue(drValue);
SetCell(newCell, dateStyle, column.DataType, drValue);
}
else
{
SetCell(newCell, dateStyle, column.DataType, drValue);
} }
#endregion
rowIndex++;
}
using (MemoryStream ms = new MemoryStream())
{
workbook.Write(ms);
ms.Flush();
ms.Position = ;
return ms;
}
}
#endregion
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