我想在TXTID里输入一些ID来查找。大大们帮我看看啊！         
string id = txtID.Text;
            if (id != "") AddSql = " ygid like '%" + id + "%'";
            string  strSQL = "server=127.0.0.1;uid=sa;pwd=;database=temper";
            SqlConnection con = new SqlConnection(strSQL);
            SqlDataAdapter  sda = new SqlDataAdapter ("select * from table1 where '%" + AddSql + "%'",con);
            DataSet ds = new DataSet();
            sda.Fill(ds);
            dataGridView1.DataSource = ds;

改了还是不对啊

OK了！把%重复加了，呵呵。直接"+AddSql +"就行了
也不用DataSet 不然在dataGridView1中看不到表，用DataTable。
谢谢LS的帮忙啊