string fName=openFileDialog1.FileName; FileStream fs = new FileStream(fName, FileMode.Open);
byte[] imgbt = new byte[fs.Length];
BinaryReader br = new BinaryReader(fs);
imgbt = br.ReadBytes(Convert.ToInt32(fs.Length)); String sql = "Update GG set images='" + imgbt+ "' where Id='" + xxx + "'";//sql语句
//运行到sql断下来 语句是"Update GG set images='System.byte[]' where Id='1'"//我用messagebox.show出来也是System.byte[]这句话 我时想往数据库里插入的时byte里德二进制流 但是为什么插入的时一段字符
cmd.Parameters.AddWithValue("@images",imgbt );
cmd.Parameters.AddWithValue("@id",xxx );
conn.Open();
SqlCommand com = new SqlCommand("Update GG set images=@imgdata where Id='" + xxx + "'",conn);
com.Parameters.Add("@imgdata", SqlDbType.Image);
com.Parameters["@imgdata"].Value = imgbt;
com.ExecuteNonQuery();
conn.Close();
终于搞好了 谢谢大家了