将IMAGE转为PDF后上传

using iTextSharp.text;
using iTextSharp.text.pdf;/// <summary>
/// 将IMAGE转为PDF后上传
/// </summary>
/// <param name="img"></param>
/// <param name="strUpLoadPdfPath"></param>
/// <param name="strNewFileName"></param>
/// <param name="imgFormat"></param>
public void uploadImageToPdf(System.Drawing.Image img, string strUpLoadPdfPath, ref string strNewFileName, System.Drawing.Imaging.ImageFormat imgFormat = null)
{
try
{
if (imgFormat == null)
{
imgFormat = System.Drawing.Imaging.ImageFormat.Jpeg;
}
//PDF存档路径
if (strUpLoadPdfPath.LastIndexOf(@"\") == strUpLoadPdfPath.Length - )
{
strUpLoadPdfPath = strUpLoadPdfPath.Substring(, strUpLoadPdfPath.Length - );
}
if (strNewFileName.Trim() == "")
{
strNewFileName = DateTime.Now.ToString("yyyyMMddHHmm");
}
strNewFileName = strUpLoadPdfPath + @"\" + strNewFileName;
if (!strNewFileName.ToLower().Contains(".pdf"))
{
strNewFileName += ".pdf";
} if (!Directory.Exists(strUpLoadPdfPath))
{
Directory.CreateDirectory(strUpLoadPdfPath);
} //定义pdf大小，设置上下左右边距
iTextSharp.text.Document doc = new iTextSharp.text.Document(iTextSharp.text.PageSize.A3, , , , );
//设置保存路径
PdfWriter writer = PdfWriter.GetInstance(doc, new FileStream(strNewFileName, FileMode.Create)); //生成pdf路径，创建文件流
doc.Open();
//将图片写入PDF中
iTextSharp.text.Image imgSave = iTextSharp.text.Image.GetInstance(img, imgFormat);
imgSave.Alignment = iTextSharp.text.Image.ALIGN_MIDDLE;
imgSave.ScaleAbsolute(750f, 1150f);
doc.Add(imgSave);
//保存PDF文件
writer.Flush();
writer.CloseStream = true;
doc.Close();
}
catch (Exception ex)
{
throw ex;
}
}