图片转换2进制

来源：互联网发布：java 线程池 executor 编辑：程序博客网时间：2024/04/30 21:53

//图片转换2进制

C# code

 protected void btnUpload_Click1(object sender, EventArgs e)    {        SqlConnection con = new SqlConnection(Sql);        con.Open();        FileStream fs = File.Open(this.File1.PostedFile.FileName, FileMode.Open);        byte[] by = new byte[fs.Length];        fs.Read(by, 0, (int)fs.Length);        String SqlCmd = "insert into ImageStore(ImageData,ImageContentType,ImageDescription,ImageSize) values(@Image,@fileType,@fileDec,@fileSize)";        SqlCommand CmdObj = new SqlCommand(SqlCmd, con);        CmdObj.Parameters.Add("@Image", SqlDbType.Image, (int)fs.Length).Value = by;        CmdObj.Parameters.Add("@fileType", SqlDbType.VarChar, 20).Value = this.File1.PostedFile.ContentType;        CmdObj.Parameters.Add("@fileDec", SqlDbType.VarChar, 200).Value = this.txtDescript.Text;        CmdObj.Parameters.Add("@fileSize", SqlDbType.BigInt).Value = this.File1.PostedFile.ContentLength;        fs.Close();        CmdObj.ExecuteNonQuery();        dataGridBind();    }

2进制转换图片

C# code

private void Page_Load(object sender, System.EventArgs e)    {        string strImageID = Request.QueryString["id"];        SqlConnection myConnection = new SqlConnection(Sql);        SqlCommand myCommand = new SqlCommand("Select ImageContentType, ImageData from ImageStore Where ImgID="            + strImageID, myConnection);        try        {            myConnection.Open();            SqlDataReader myDataReader;            myDataReader = myCommand.ExecuteReader(CommandBehavior.CloseConnection);            if (myDataReader.Read())            {                Response.Clear();                Response.ContentType = myDataReader["ImageContentType"].ToString();                Response.BinaryWrite((byte[])myDataReader["ImageData"]);            }            myConnection.Close();        }        catch (SqlException SQLexc)        {            Response.Write("提取数据时出现错误：" + SQLexc.ToString());        }        Response.End();    }