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一个简单的OA系统,对于中小型企业的OA

			SqlConnection mycon=new SqlConnection("server=.;database=xbdzzw;uid=sa;pwd=");
			mycon.Open();
			SqlCommand mycmd= new SqlCommand("select  * from stocksurr where id=5",mycon);
			SqlDataReader dr= mycmd.ExecuteReader();
		    byte [] b1=(byte[])dr["document"];
//		    string values=System.Text.Encoding.GetEncoding("gb2312").GetString(ib,0,2);
			MemoryStream ms=new MemoryStream(b1);
			richTextBox1.LoadFile(ms,System.Windows.Forms.RichTextBoxStreamType.UnicodePlainText);
			mycon.Close();