//存储
private void MemoryImage()
{
string sql = "";
//string conn = "Provider=SQLNCLI;Da
Stream ms;
byte[] picbyte;
OpenFileDialog fdSelectPic = new OpenFileDialog();
if (ofdSelectPic.ShowDialog() == DialogResult.OK)
{
if ((ms = ofdSelectPic.OpenFile()) != null)
{
picbyte = new byte[ms.Length];
ms.Position = 0;
ms.Read(picbyte, 0, Convert.ToInt32(ms.Length));
//连接数据库
SqlConnection conn = new SqlConnection();
conn.ConnectionString = "Da
sql = "Insert into LibraryCover(Cover) values(@UpdateImage)";
SqlCommand cmd = new SqlCommand(sql, conn);
cmd.Parameters.Add("@UpdateImage", SqlDbType.VarBinary);
cmd.Parameters["@UpdateImage"].Value = picbyte;
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
ms.Close();
}
}
MessageBox.Show("完成！");
}
//读取
private void ShowImage()
{
string sql = "";
sql = "select Cover from LibraryCover where LibID=1";
SqlConnection conn = new SqlConnection();
conn.ConnectionString = "Da
SqlCommand cmd = new SqlCommand(sql,conn);
conn.Open();
SqlDataReader reader = cmd.ExecuteReader();
reader.Read();
MemoryStream ms = new MemoryStream((byte[])reader["Cover"]);
Image image = Image.FromStream(ms, true);
reader.Close();
conn.Close();
pictureBox1.Image = image;
}
//批量存储
private void button12_Click(object sender, EventArgs e)
{
FolderBrowserDialog FBD = new FolderBrowserDialog();
FBD.ShowDialog();
DBImages(FBD.SelectedPath);
}
/// <summary>
/// 图片二进制存SQL库
/// </summary>
/// <param name="path">图片所在文件夹</param>
private void DBImages(string path)
{
Stream ms;
string sql = "";
byte[] picbyte;
string FolderName = "";
string[] Folders;
string connStr = "Da
SqlConnection conn = new SqlConnection(connStr);
Folders = Directory.GetFiles(path);
foreach (string folder in Folders)
{
if ((ms = File.OpenRead(folder))!= null)
{
picbyte = new byte[ms.Length];
ms.Position = 0;
ms.Read(picbyte, 0, Convert.ToInt32(ms.Length));
sql = "insert into LibraryCover(ImageName,Cover) values(@ImageName,@Cover)";
SqlCommand cmd = new SqlCommand(sql, conn);
cmd.CommandType = CommandType.Text;
FolderName = Path.GetFileNameWithoutExtension(folder);
cmd.Parameters.Add("@ImageName", SqlDbType.VarChar, 255).Value = FolderName;
cmd.Parameters.Add("@Cover", SqlDbType.VarBinary).Value = picbyte;
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
ms.Close();
}
}
MessageBox.Show("存储完成！");
}
private void button13_Click(object sender, EventArgs e)
{
FolderBrowserDialog FBD = new FolderBrowserDialog();
FBD.ShowDialog();
getImageShow(FBD.SelectedPath);
}
/// <summary>
/// sql库二进制图片显示在存储器上
/// </summary>
/// <param name="path">要存储图片的位置</param>
private void getImageShow(string path)
{
string sql = "";
string conn = "Da
sql = "select ImageName,Cover from LibraryCover order by LibID";
SqlDataReader sdr = GetList(conn,sql);
while (sdr.Read())
{
byte[] bytes = (byte[])sdr["Cover"];
FileStream fs = new FileStream(path+@"\" + sdr["ImageName"] + ".jpg", FileMode.Create, FileAccess.Write);
fs.Write(bytes, 0, bytes.Length);
fs.Flush();
fs.Close();
}
MessageBox.Show("完成！");
}
public SqlDataReader GetList(string conn, string Sql)
{
SqlConnection myConnection = new SqlConnection(conn);
SqlCommand myCommand = new SqlCommand(Sql, myConnection);
myConnection.Open();
SqlDataReader result = myCommand.ExecuteReader(CommandBehavior.CloseConnection);
return result;
}
private void getImage()
{
int num = 0;
string path = @"D:\bookpic";
Stream ms;
string sql = "";
byte[] picbyte;
FileInfo[] Folders;
string[] files;
string FilePath = "";
string connStr = "Da
SqlConnection conn = new SqlConnection(connStr);
DirectoryInfo DI = new DirectoryInfo(path);
Folders = DI.GetFiles("*.*",SearchOption.AllDirectories);
foreach (FileInfo file in Folders)
{
num++;
txt_num.Text = num.ToString();
FilePath = file.FullName.Replace(@"D:\", "").Replace(@"\","/");
if ((ms = File.OpenRead(file.FullName)) != null)
{
picbyte = new byte[ms.Length];
ms.Position = 0;
ms.Read(picbyte, 0, Convert.ToInt32(ms.Length));
sql = "update shop_books set Cover=@Cover where bookpic='" + modsql(FilePath) + "'";
SqlCommand cmd = new SqlCommand(sql, conn);
cmd.CommandType = CommandType.Text;
cmd.CommandTimeout = 10000;
cmd.Parameters.Add("@Cover", SqlDbType.VarBinary).Value = picbyte;
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
ms.Close();
}
}
MessageBox.Show("存储完成！");
}
public string modsql(string sql)
{
return sql.Replace("'", "''");
}
//Image写入XML
using System.IO;
using System.Runtime.Serialization.Formatters.Soap;
string MyFile = @"D:\数据处理\image.xml";
string imageFile = @"G:\zengwei.jpg";
Stream MyStream;
SoapFormatter MyFormatter =new SoapFormatter();
private void button1_Click(object sender, EventArgs e)
{
try
{
MyStream = new FileStream(MyFile, FileMode.Create, FileAccess.Write, FileShare.None);
MyFormatter.Serialize(MyStream, pictureBox1.Image);
MyStream.Close();
MessageBox.Show("完成！");
}
catch (Exception ex)
{
}
}
//读取XML显示IMAGE
private void button2_Click(object sender, EventArgs e)
{
try
{
MyStream = new FileStream(MyFile, FileMode.Open, FileAccess.Read, FileShare.None);
pictureBox1.Image = (Bitmap)MyFormatter.Deserialize(MyStream);
MyStream.Close();
}
catch (Exception ex)
{ }
}
private void button3_Click(object sender, EventArgs e)
{
pictureBox1.Image = Image.FromFile(imageFile);
}
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.net教程:winform直接显示二进制数据中的图片
//读取DataSet中以二进制(Image)形式保存的图片
byte[] byteImage = (byte[])dataSet11.tBGPicture.Rows[2]["PicContent"];
//转成MemoryStream类型
System.IO.MemoryStream stream = new System.IO.MemoryStream(byteImage, true);
//stream.Write(byteImage, 0, byteImage.Length);
//显示图片
pictureBox1.Image = Image.FromStream(stream);
//关闭stream
stream.Close();