winForm 读取pdf文件并，转换成图片

最近弄了一个项目，需要读取本机的pdf文件并转换成图片放置到另外一个文件夹下，现在把代码分享下：

一、看看如何读取本机的pdf文件到窗体中

首先，我们下载一个pdf阅读AdbeRdr器到电脑上,最好是安装完整版的，要不然vs获得到组件

其次，我们就可以在工具箱中获取Adobe提供的Active控件了

View Code

/// <summary>
/// 将PDF 相应的页转换为图片
/// </summary>
/// <param name="strPDFpath">PDF 路径</param>
/// <param name="Page">需要转换的页页码</param>
private void GetImage(string strPDFpath,int Page)
{
FileInfo file=new FileInfo (strPDFpath);
string strSavePath=file.Directory.FullName;
byte[] ImgData = GetImgData(strPDFpath, Page);
MemoryStream ms = new MemoryStream(ImgData, 0, ImgData.Length);
Bitmap returnImage = (Bitmap)Bitmap.FromStream(ms);
string strImgPath=Path.Combine(strSavePath,string.Format("PDFConvert{0}.jpg",Page));
returnImage.Save(strImgPath);
}
/// <summary>
/// 从PDF中获取首页的图片
/// </summary>
/// <param name="PDFPath">PDF 文件路径</param>
/// <param name="Page">需要获取的第几页</param>
/// <returns></returns>
private byte[] GetImgData(string PDFPath,int Page)
{
System.Drawing.Image img = PDFView.ConvertPDF.PDFConvert.GetPageFromPDF(PDFPath,Page, 300, "", true);
return GetDataByImg(img);//读取img的数据并返回
}
/// <summary>
/// 将单页的PDF转换为图片
/// </summary>
/// <param name="_image"></param>
/// <returns></returns>
private byte[] GetDataByImg(System.Drawing.Image _image)
{
System.IO.MemoryStream Ms = new MemoryStream();
_image.Save(Ms, System.Drawing.Imaging.ImageFormat.Jpeg);
byte[] imgdata = new byte[Ms.Length];
Ms.Position = 0;
Ms.Read(imgdata, 0, Convert.ToInt32(Ms.Length));
Ms.Close();
return imgdata;
}

string Pdfpath = "";
/// <summary>
/// 选择需要转换的PDF
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button1_Click(object sender, EventArgs e)
{
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
Pdfpath = openFileDialog1.FileName;
}
else
{
Pdfpath = "";
}
textBox1.Text = Pdfpath;
}
/// <summary>
/// 转换
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button2_Click(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(Pdfpath))
{
GetImage(Pdfpath,2);
}
}
}
}

以上就是整个读取和转换的过程