asp.net 图片的读写入库实现代码

  写图片c:\1.jpg到表cinfo中

  

复制代码 代码如下:

  private static void AddCinfo()

  {

  string strSql = "insert into cinfo (srvtitle,csttitle,introduction,logo) values

  (@srvtitle,@csttitle,@introduction,@logo)";

  SqlParameter[] parms =

  {

  new SqlParameter("@srvtitle",SqlDbType.VarChar,30),

  new SqlParameter("@csttitle",SqlDbType.VarChar,30),

  new SqlParameter("@introduction",SqlDbType.NVarChar,500),

  new SqlParameter("@logo",SqlDbType.Image)

  };

  parms[0].Value = "旅业互动";

  parms[1].Value = "lyhd";

  parms[2].Value = "简介";

  string filePath = @"c:\1.jpg";

  FileStream fs = File.OpenRead(filePath);

  byte[] content = new byte[fs.Length];

  fs.Read(content, 0, content.Length);

  fs.Close();

  parms[3].Value = content;

  DBHelper.ExecuteNonQuery(CommandType.Text, strSql, parms);

  }

  读取图片的页面 test.aspx

  

复制代码 代码如下:

  protected void Page_Load(object sender, EventArgs e)

  {

  string strSql = "select * from cinfo where id=1";

  SqlDataReader reader=DBHelper.ExecuteReader(CommandType.Text, strSql, null);

  if(reader.Read())

  {

  byte[] c=(byte[])reader["logo"];

  Response.BinaryWrite(c);

  }

  }

  用来显示图片的页面 test2.aspx

  

复制代码 代码如下:

  <img src="test.aspx" />