[issamsaidd]

الف شكرا لك تم الحل الكود كان فى حرف n زيادة 

كود :

               OleDbDataAdapter da = new OleDbDataAdapter("select * from said where xmadical1 LIKE '" + comboBox1.Text + "' or xmadical2 LIKE" + " '" + comboBox1.Text + "' or xmadical3 LIKE '" + comboBox1.Text + "'", con);
               DataTable dt = new DataTable();
               if (con.State == ConnectionState.Closed)
               { con.Open(); }
               dt.Load(da.SelectCommand.ExecuteReader());
               con.Close();
               dataGridView1.DataSource = dt;
               dataGridView1.Refresh();