知名网站建设代理,广东三库一平台登录,做试卷的网站,网页关于我们怎么设计1.新建项目
2.新增一个新文件夹“lib”#xff08;主要是为了存放引用的dll#xff09; 3.将“gsdll32.dll 、PDFLibNet.dll 、PDFView.dll”3个dll添加到文件夹中
4.项目添加“PDFLibNet.dll 、PDFView.dll”2个类库的引用#xff0c;并将gsdll32.dll 拷贝到项目生产根…1.新建项目
2.新增一个新文件夹“lib”主要是为了存放引用的dll 3.将“gsdll32.dll 、PDFLibNet.dll 、PDFView.dll”3个dll添加到文件夹中
4.项目添加“PDFLibNet.dll 、PDFView.dll”2个类库的引用并将gsdll32.dll 拷贝到项目生产根目录中bin 目录
(注意gsdll32.dll 是无法和其它两个dll 一样添加到项目中进行引用的这一点我之前未能给大家作出说明不好意思^_^ ) 5.在主界面中添加文本框“TextBox1”浏览按钮“button1”,转换按钮“button2”和文件选择控件“OpenFileDialog1” 6.执行方式点击浏览按钮选择一个PDF点击“转换按钮”即可
7.源代码Form1.cs using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.IO;
namespace PDFEditer { public partial class Form1 : Form { public Form1() { InitializeComponent(); } /// summary /// 将PDF 相应的页转换为图片 /// /summary /// param namestrPDFpathPDF 路径/param /// param namePage需要转换的页页码/param private void GetImage(string strPDFpath,int Page) { FileInfo filenew FileInfo (strPDFpath); string strSavePathfile.Directory.FullName; byte[] ImgData GetImgData(strPDFpath, Page); MemoryStream ms new MemoryStream(ImgData, 0, ImgData.Length); Bitmap returnImage (Bitmap)Bitmap.FromStream(ms); string strImgPathPath.Combine(strSavePath,string.Format(PDFConvert{0}.jpg,Page)); returnImage.Save(strImgPath); } /// summary /// 从PDF中获取首页的图片 /// /summary /// param namePDFPathPDF 文件路径/param /// param namePage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 namesender/param /// param namee/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 namesender/param /// param namee/param private void button2_Click(object sender, EventArgs e) { if (!string.IsNullOrEmpty(Pdfpath)) { GetImage(Pdfpath,2); } } } } 源码下载http://u.163.com/8MJPw5bT 提取码pe8y8a35
