PDF合并

要求:将多个table导出到一个PDF里,然后打印。 

问题分析:要求将四个table放一个PDF打印,四个table的列各不相同,第一个是表头,其他三个是列表,列比表头多很多,如果直接生成一个excel,然后再直接导出会发现有些列在PDF中换行了。 

原因:因为excle可打印的区域是有限制的,可打印的地方如下方法可见:文件-打印-设置-打印选择区域(如果打印要宽一点,选择A4,横向打印,)这时你点开始(2010版)回到sheet里,发现里面有一条虚线。这个虚线就是excel生成PDF后(相应纸张格式)最多显示的宽。

解决方法:

一,为了解决上面所说情况,可以设好四个table对应的excle模板,然后生成四个pdf。

二,再将四个PDF全并,注意(打印的方向,纸张大小一定要一样)

合并方法:

/// <summary>
        /// PDF合并
        /// </summary>
        /// <param name="arrFileList">要合并的PDF名称集</param>
        /// <param name="outMergeFile">合并后的PDF</param>
        public static void MergePDFFiles(List<string> arrFileList, string strOutMergeFile)
        {
            PdfReader reader;
            Document document = new Document();
            PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(strOutMergeFile, FileMode.Create));  
document.SetPageSize(PageSize.A4.Rotate()); //如果你的模板是A4的,这里一定要是A4 document.Open(); PdfContentByte cb
= writer.DirectContent; PdfImportedPage newPage; foreach (string strFileName in arrFileList) { reader = new PdfReader(strFileName); int iPageNum = reader.NumberOfPages; for (int j = 1; j <= iPageNum; j++) { document.NewPage(); newPage = writer.GetImportedPage(reader, j); cb.AddTemplate(newPage, 0, 0); } } document.Close(); }

调用:

List<string> arrFileList= new List<string>();
arrFileList.Add(strFileName);
MergePDFFiles(arrFileList, strFileName);


table根据模板生成excel

 Workbook excel = new Workbook();
string strFilePath = ExcelTemplatePath + strTableName + ".xls";
 //建立excel并打开模板文件
excel.Open(strFilePath);
Worksheet sheet = excel.Worksheets["Sheet1"];    控制sheet1
sheet.Cells.DeleteColumn((int.Parse(c.OrderNo.ToString()) - intDeleteCount));删除指定列
excel.Save(strFileName, FileFormatType.Default);
 ///转成PDF
 ConvertXlsToPdf(strFileName, strFileNamePdf);

excel转PDF

使用这个要引用:Aspose.Cells.dll、Aspose.Pdf.Kit.dll、Interop.Excel.dll、itextsharp.dll 最好用最新的。

 

/// 将Xls文件转换为PDF文件
/// </summary>
/// <param name="strSourceFile">源文件</param>
/// <param name="strTargetFile">目标文件</param>
/// <returns>是否成功</returns>
public static bool ConvertXlsToPdf(string strSourceFile, string strTargetFile)
{
    if (File.Exists(strTargetFile))
    {
        File.Delete(strTargetFile);
    }

    FileInfo fiPdf = new FileInfo(strTargetFile);
    if (!fiPdf.Directory.Exists)
    {
        fiPdf.Directory.Create();
    }

    bool blnResult = false;

    #region 微软式导出
    Excel.XlFixedFormatType targetType = Excel.XlFixedFormatType.xlTypePDF;
    object missing = Type.Missing;
    Excel.ApplicationClass application = null;
    Excel.Workbook workBook = null;
    object paramFromPage = Type.Missing;
    object paramToPage = Type.Missing;
    try
    {
        application = new Excel.ApplicationClass();

        object target = strTargetFile;
        //object type = targetType;
        System.IO.FileInfo fi = new System.IO.FileInfo(strSourceFile);

        workBook = application.Workbooks.Open(fi.FullName, missing, missing, missing, missing, missing,
                missing, missing, missing, missing, missing, missing, missing, missing, missing);

        workBook.ExportAsFixedFormat(targetType, target, Excel.XlFixedFormatQuality.xlQualityStandard, true, false, missing, missing, missing, missing);
        blnResult = true;
    }
    catch (Exception ex)
    {
        blnResult = false;
        throw ex;
    }
    finally
    {
        if (workBook != null)
        {
            workBook.Close(false, missing, missing);
            workBook = null;
        }
        if (application != null)
        {
            application.Quit();
            application = null;
        }
        GC.Collect();
        GC.WaitForPendingFinalizers();
    }
    #endregion
    return blnResult;
}

 注意:如果报:无法嵌入互操作类型“Microsoft.Office.Interop.Excel.ApplicationClass”。请改用适用的接口。右击属性,有个东西改一下,具体有点忘了。

 

 

 

posted @ 2014-06-13 14:30  丁焕轩  阅读(1284)  评论(0编辑  收藏  举报