c# winform下sql图片二进制存储/读取/显示/写入XML/读取XML显示

winform下：

//存储

private void MemoryImage()

{

string sql = "";

//string conn = "Provider=SQLNCLI;Data Source=192.168.0.9,1433;Database=WebDown;UID=sa;PWD=111122;";

Stream ms;

byte[] picbyte;

OpenFileDialog ofdSelectPic = 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 = "Data Source=192.168.0.9,1433;Database=WebDown;UID=sa;PWD=111122;";

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 = "Data Source=192.168.0.9,1433;Database=WebDown;UID=sa;PWD=111122;";

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 = "Data Source=192.168.0.9,1433;Database=WebDown;UID=sa;PWD=111122;";

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！");

}

//批量读取

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 = "Data Source=192.168.0.9,1433;Database=WebDown;UID=sa;PWD=111122;";

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 = "Data Source=192.168.0.200,1433;Database=MISTemp;UID=sa;PWD=111122;";

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);

}