提示 参数无效

[chyjty]

从数据库中读取图片放入图片控件
SqlConnection conn = Class1.str();
conn.Open();
SqlDataAdapter comm = new SqlDataAdapter("select Uzhaopian from Users where Uname='" + dataGridView1.SelectedCells[1].Value.ToString() + "'", conn);
DataSet ds = new DataSet();
comm.Fill(ds);
//SqlDataReader sdr = comm.ExecuteReader();
//sdr.Read();
//byte[] bImg = (byte[])sdr["Uzhaopian"];

MemoryStream stream = new MemoryStream((byte[])ds.Tables[0].Rows[0][0]);

pictureBox1.Image = Image.FromStream(stream);

[chyjty]

pictureBox1.Image = Image.FromStream(stream); stream参数无效

[ghost5216]

pictureBox1.Image = Image.FromStream((Stream)stream); stream参数无效

[garfieldzf]

 using(MemoryStream ms =new MemoryStream(bytes))
 {
    Image photo=null;
    ms.Write(bytes,0,bytes.length);
    photo =Image.FromStream(ms); 
  }