cn.Open();
OleDbDataAdapter da = new OleDbDataAdapter("select Photo Account WHERE UserName like Purchasedby", cn);
DataSet ds = new DataSet();
da.Fill(ds);
cn.Close();
byte[] content = (byte[])ds.Tables[0].Rows[0].ItemArray[0];
MemoryStream stream = new MemoryStream(content);
pictureBox1.Image = Image.FromStream(stream);
パラメータが無効です>>どうすればいいですか??