如何操作sqlserver 数据库的image字段[C#]

如何操作sqlserver 数据库的image字段     -|walrus 发表于 2006-9-27 12:37:00

string modelFileName = curTempPath+"test.model";     sqlConnection con = new sqlConnection("server=192.9.200.134;database=test;user=sa;password=999");     FileInfo fi=new FileInfo(modelFileName);     FileStream fs=fi.OpenRead();     byte[] bytes=new byte[fs.Length];     fs.Read(bytes,Convert.ToInt32(fs.Length));                    //保存到数据库中     string insertCmd;     insertCmd="insert into model(name,model) Values (@name,@model)";     con.open();     sqlCommand  myCommand1=new sqlCommand(insertCmd,con);     myCommand1.Parameters.Add(new sqlParameter("@name",sqlDbType.VarChar));     myCommand1.Parameters.Add(new sqlParameter("@model",sqlDbType.Image));     myCommand1.Parameters["@name"].value="/测试";     myCommand1.Parameters["@model"].value="/bytes;     myCommand1.ExecuteNonQuery();           " //读取    if(con.State==0) con.open();    sqlCommand cm=new sqlCommand();    cm.Connection=con;    cm.CommandType=CommandType.Text;    cm.CommandText="select * from model where id=1";    sqlDataReader dr=null;    dr=cm.ExecuteReader();    byte[] File=null;      if(dr.Read())    {     File=(byte[])dr["fieldname"];    }        string fileName="d://www.model";    FileInfo fi=new System.IO.FileInfo(fileName);    FileStream fs=fi.OpenWrite();    fs.Write(File,File.Length);    fs.Close();