1---图片通过CGI获取保存到本地 snapshot.cgi快照的意思。
(1)cgi保存
public string Address = "http://192.168.58.4/snapshot.cgi/user=admin&pwd="; public void PaiZhao() { FileStream fs = new FileStream("D:\\Image.jpg",FileMode.Create,FileAccess.ReadWrite); HttpWebRequest MyHttpWebRequest = null; HttpWebResponse MyHttpWebResponse = null; Stream MyStream = null; try { MyHttpWebRequest = (HttpWebRequest)HttpWebRequest.Create(Address); MyHttpWebResponse = (HttpWebResponse)MyHttpWebRequest.GetResponse(); MyStream = MyHttpWebResponse.GetResponseStream(); } catch(Exception) { } int read = 0; byte[] Mybyte=new byte[1024]; do { read = MyStream.Read(Mybyte,0,1024); fs.Write(Mybyte,0,read); }while(read>0); MyStream.Flush(); MyStream.Close(); MyHttpWebResponse.Close(); fs.Flush(); fs.Close(); }
(2)stream保存
FileStream fs = new FileStream(this.txtLuJing.Text.ToString()+"\\"+txtName.Text.ToString()+".jpg", FileMode.Create, FileAccess.ReadWrite); Stream MyStream = new MemoryStream((byte[])MyDataSet.Tables[0].Rows[0][2]); //数据库中取出的byte[]数组 int read = 0; byte[] Mybyte = new byte[1024]; do { read = MyStream.Read(Mybyte,0,1024); fs.Write(Mybyte,0,read); } while (read > 0); MyStream.Flush(); MyStream.Close(); fs.Flush(); fs.Close(); System.Windows.MessageBox.Show("保存成功！");
2---对本地图片文件的读取，转换为byte[]数组------》存进数据库
(1)通过image.save();方式有一定的局限性。
System.Drawing.Image MyImage = System.Drawing.Image.FromFile("D:\\Image.jpg"); MemoryStream MyMemoryStream = new MemoryStream(); MyImage.Save(MyMemoryStream, System.Drawing.Imaging.ImageFormat.Jpeg); MyMemoryStream.ToArray();//转为二进制数组 保存到数据库
(2)通过filestream 内置 file.openRead();方式可直接读取为byte[]数组。
FileStream fs = File.OpenRead("D:\\Image.jpg"); byte[] Mybyte = new byte[fs.Length]; fs.Read(Mybyte, 0, Mybyte.Length); fs.Close();
3--图片显示到image控件之中
(1)很据文件路径显示
private void BtnRead_Click(object sender, RoutedEventArgs e) { if (MyOpenFileDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK) { MyUrl = MyOpenFileDialog.FileName.ToString(); //获取文件的路径信息 MyImageName = System.IO.Path.GetFileNameWithoutExtension(MyUrl);//获取图片的名称不包含扩展名 BitmapImage MyBitmapImage = new BitmapImage(new Uri(MyUrl)); //BitmapImage可通过image.source显示到image控件中 img1.Source = MyBitmapImage; } }
(2)通过MemoryStream内存流显示(byte[]转化为MemoryStream)
MemoryStream MyMemoryStream = new MemoryStream((byte[])MyDataSet.Tables[0].Rows[0][2]);//将byte[]数组转化为内存流 System.Drawing.Image MyImage = System.Drawing.Image.FromStream(MyMemoryStream); //将内存流转化为image类型 System.Drawing.Bitmap MyBitmap = new System.Drawing.Bitmap(MyImage); //将image类型转化为bitmap类型 IntPtr MyIntPtr = MyBitmap.GetHbitmap(); System.Windows.Media.ImageSource WPFSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(MyIntPtr, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions()); img1.Source = WPFSource;
(3)图片保存时直接转换为Stream，stream在image中显示
System.Drawing.Image MyImage = System.Drawing.Image.FromStream(MyStream); System.Drawing.Bitmap MyBitmap = new System.Drawing.Bitmap(MyImage); IntPtr MyIntPtr = MyBitmap.GetHbitmap(); System.Windows.Media.ImageSource WPFSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(MyIntPtr, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions()); img1.Source = WPFSource; //MemoryStream MyMemoryStream = new MemoryStream(); //MyImage.Save(MyMemoryStream, System.Drawing.Imaging.ImageFormat.Jpeg); 转化为内存流 可以用2显示
(4)CGI直接获取MemoryStream(显示在image中)
HttpWebRequest MyHttpWebRequestTest = (HttpWebRequest)WebRequest.Create("http://192.168.58.4/snapshot.cgi/user=admin&pwd="); WebResponse MyWebResponse = MyHttpWebRequestTest.GetResponse(); Stream stream = MyWebResponse.GetResponseStream(); int read = 0; int total = 0; byte[] buffer = new byte[1024 * 1024]; do { read = stream.Read(buffer, total, 1024); total += read; } while (read > 0); MemoryStream ms = new MemoryStream(buffer, 0, total); System.Drawing.Image MyImage3 = System.Drawing.Image.FromStream(ms); System.Drawing.Bitmap MyBitmap3 = new System.Drawing.Bitmap(MyImage3); IntPtr MyIntPtr3 = MyBitmap3.GetHbitmap(); System.Windows.Media.ImageSource WPFSource3 = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(MyIntPtr3, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions()); img3.Source = WPFSource3;
完整代码：(1)显示图片
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; using System.IO; using System.Net; using System.Windows.Threading; namespace Test_IP_camear { ////// MainWindow.xaml 的交互逻辑 /// public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } public string Address = "http://192.168.58.4/snapshot.cgi/user=admin&pwd="; private void btnOpen_Click(object sender, RoutedEventArgs e) { HttpWebRequest MyHttpWebRequest = null; HttpWebResponse MyHttpWebResponse = null; MyHttpWebRequest = (HttpWebRequest)HttpWebRequest.Create(Address); MyHttpWebResponse = (HttpWebResponse)MyHttpWebRequest.GetResponse(); Stream MyStream = MyHttpWebResponse.GetResponseStream(); //<1>从（Stream）流文件中读取图片 System.Drawing.Image MyImage = System.Drawing.Image.FromStream(MyStream); System.Drawing.Bitmap MyBitmap = new System.Drawing.Bitmap(MyImage); IntPtr MyIntPtr = MyBitmap.GetHbitmap(); System.Windows.Media.ImageSource WPFSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(MyIntPtr, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions()); img1.Source = WPFSource; //<2>从（MemoryStream）流文件中读取图片 MemoryStream MyMemoryStream = new MemoryStream(); MyImage.Save(MyMemoryStream, System.Drawing.Imaging.ImageFormat.Jpeg); // byte[] Mybyte = MyMemoryStream.ToArray();可以存储到数据库中 System.Drawing.Image MyImage2 = System.Drawing.Image.FromStream(MyMemoryStream); System.Drawing.Bitmap MyBitmap2 = new System.Drawing.Bitmap(MyImage); IntPtr MyIntPtr2 = MyBitmap.GetHbitmap(); System.Windows.Media.ImageSource WPFSource2 = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(MyIntPtr2, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions()); img2.Source = WPFSource2; //<3>从（MemoryStream）流文件中读取图片 HttpWebRequest MyHttpWebRequestTest = (HttpWebRequest)WebRequest.Create("http://192.168.58.4/snapshot.cgi/user=admin&pwd="); WebResponse MyWebResponse = MyHttpWebRequestTest.GetResponse(); Stream stream = MyWebResponse.GetResponseStream(); int read = 0; int total = 0; byte[] buffer = new byte[1024 * 1024]; do { read = stream.Read(buffer, total, 1024); total += read; } while (read > 0); MemoryStream ms = new MemoryStream(buffer, 0, total); System.Drawing.Image MyImage3 = System.Drawing.Image.FromStream(ms); System.Drawing.Bitmap MyBitmap3 = new System.Drawing.Bitmap(MyImage3); IntPtr MyIntPtr3 = MyBitmap3.GetHbitmap(); System.Windows.Media.ImageSource WPFSource3 = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(MyIntPtr3, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions()); img3.Source = WPFSource3; } } }
(2)图片通过CGI访问，并保存到本地。
"listView" HorizontalAlignment="Left" Height="285" Margin="10,10,0,0" VerticalAlignment="Top" Width="250" SelectionChanged="listView_SelectionChanged"/> "img1" HorizontalAlignment="Left" Height="129" Margin="282,59,0,0" VerticalAlignment="Top" Width="262"/>
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; using System.Data.SqlClient; using System.Data; using System.IO; using System.Net; using System.Threading; using System.Windows.Threading; using System.Drawing; using System.Windows.Forms; namespace TestGuosai { ////// MainWindow.xaml 的交互逻辑 /// public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } SqlConnection conn; SqlCommand comm; SqlDataAdapter MySqlDataAdapter; DataSet MyDataSet; public void Getconn() { conn = new SqlConnection("Data Source=NEWLAND-PC;Initial Catalog=MyImage;Persist Security Info=True;User ID=sa;pwd=123456;"); conn.Open(); } public void Update() { Getconn(); string selsect = "select * from MyImage"; MySqlDataAdapter = new SqlDataAdapter(selsect,conn); MyDataSet = new DataSet(); MySqlDataAdapter.Fill(MyDataSet); listView.Items.Clear(); for (int i = 0; i < MyDataSet.Tables[0].Rows.Count;i++ ) { listView.Items.Add(MyDataSet.Tables[0].Rows[i][1]); } this.listView.ScrollIntoView(this.listView.Items[listView.Items.Count-1]); } private void Window_Loaded_1(object sender, RoutedEventArgs e) { Update(); } public void PaiZhao() { string address = "http://192.168.5.4/snapshot.cgi/user=admin&pwd="; FileStream fs = new FileStream("D:\\1.jpg",FileMode.Create,FileAccess.ReadWrite); HttpWebRequest MyHttpWebRequest=null; HttpWebResponse MyHttpWebResponse=null; Stream MyStream=null; try { MyHttpWebRequest = (HttpWebRequest)HttpWebRequest.Create(address); MyHttpWebResponse = (HttpWebResponse)MyHttpWebRequest.GetResponse(); MyStream = MyHttpWebResponse.GetResponseStream(); } catch(Exception) { } int read = 0; byte[] Mybyte=new byte[1024]; do { read = MyStream.Read(Mybyte,0,1024); fs.Write(Mybyte,0,read); }while(read>0); MyStream.Flush(); MyStream.Close(); MyHttpWebResponse.Close(); fs.Flush(); fs.Close(); } DispatcherTimer tm = new DispatcherTimer(); int i = 0; private void tm_Tick(object sender,EventArgs e) { i++; if (i > Convert.ToInt32(this.txtSpan.Text.ToString())) { PaiZhao(); Getconn(); string address = "D:\\1.jpg"; System.Drawing.Image MyImage= System.Drawing.Image.FromFile(address); System.Drawing.Imaging.ImageFormat MyImageFormat = System.Drawing.Imaging.ImageFormat.Jpeg; MemoryStream MyMemoryStream = new MemoryStream(); MyImage.Save(MyMemoryStream,MyImageFormat); string select = "insert MyImage(MyImageName,MyImageByte) values(@MyImageName,@MyImageByte) "; comm = new SqlCommand(select,conn); comm.Parameters.Add(new SqlParameter("@MyImageName",SqlDbType.VarChar)); comm.Parameters.Add(new SqlParameter("@MyImageByte",SqlDbType.Image)); comm.Parameters[0].Value = DateTime.Now.ToString(); comm.Parameters[1].Value = MyMemoryStream.ToArray(); if (comm.ExecuteNonQuery() > 0) { System.Windows.MessageBox.Show("保存成功"); Update(); MyImage.Dispose(); } i = 0; } } private void btnStart_Click(object sender, RoutedEventArgs e) { if (this.txtSpan.Text.ToString() == string.Empty) { System.Windows.MessageBox.Show("请输入时间间隔！"); return; } tm.Tick+=tm_Tick; tm.Interval = TimeSpan.FromSeconds(1); tm.Start(); } private void listView_SelectionChanged(object sender, SelectionChangedEventArgs e) { Getconn(); string MyImageName = this.listView.SelectedItem.ToString(); string select = "select * from MyImage where MyImageName='"+MyImageName+"'"; MySqlDataAdapter = new SqlDataAdapter(select,conn); MyDataSet = new DataSet(); MySqlDataAdapter.Fill(MyDataSet); MemoryStream MyMemoryStream = new MemoryStream((byte[])MyDataSet.Tables[0].Rows[0][2]); System.Drawing.Image MyImage = System.Drawing.Image.FromStream(MyMemoryStream); System.Drawing.Bitmap MyBitmap = new System.Drawing.Bitmap(MyImage); IntPtr MyIntPtr = MyBitmap.GetHbitmap(); System.Windows.Media.ImageSource WPFImageSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(MyIntPtr,IntPtr.Zero,Int32Rect.Empty,BitmapSizeOptions.FromEmptyOptions()); img1.Source = WPFImageSource; } private void btnSave_Click(object sender, RoutedEventArgs e) { if (listView.SelectedItem == null) { System.Windows.MessageBox.Show("请选择图片"); return; } Getconn(); string MyImageName = this.listView.SelectedItem.ToString(); string select = "select * from MyImage where MyImageName='" + MyImageName + "'"; MySqlDataAdapter = new SqlDataAdapter(select, conn); MyDataSet = new DataSet(); MySqlDataAdapter.Fill(MyDataSet); if (txtName.Text.ToString() == string.Empty) { System.Windows.MessageBox.Show("请输入图片名！"); } FileStream fs = new FileStream(this.txtLuJing.Text.ToString()+"\\"+txtName.Text.ToString()+".jpg", FileMode.Create, FileAccess.ReadWrite); Stream MyStream = new MemoryStream((byte[])MyDataSet.Tables[0].Rows[0][2]); int read = 0; byte[] Mybyte = new byte[1024]; do { read = MyStream.Read(Mybyte,0,1024); fs.Write(Mybyte,0,read); } while (read > 0); MyStream.Flush(); MyStream.Close(); fs.Flush(); fs.Close(); System.Windows.MessageBox.Show("保存成功！"); } FolderBrowserDialog Open = new FolderBrowserDialog(); private void btnSearch_Click(object sender, RoutedEventArgs e) { if (Open.ShowDialog() == System.Windows.Forms.DialogResult.OK) { this.txtLuJing.Text = Open.SelectedPath.ToString(); } } } }