search form_number in datagridview through textbox

following is my code..

private void txt_frm_filter_value_KeyDown(object sender, KeyEventArgs e)
  {
  if (e.KeyCode == Keys.Enter)
  {
  if (cmb_frm_filter_search_type.SelectedItem.Equals("Form no."))
  {
  BindingSource bs = new BindingSource();
  bs.DataSource = dgv_emp_search.DataSource;
  bs.Filter = dgv_emp_search.Columns[0].HeaderText + "Like " + Convert.ToInt32(txt_frm_filter_value.Text) + " ";

  //bs.Filter = dgv_emp_search.Columns[0].HeaderText = Convert.ToUInt64(txt_frm_filter_value.Text);



  // if (dgv_emp_search.Columns[0].Equals(searchValue))
  //bs.Filter = dgv_emp_search.Columns[0].HeaderText.ToString() + " LIKE '%" + Convert.ToInt32(txt_frm_filter_value.Text) + "%'";

  dgv_emp_search.DataSource = bs;


  //valueResulet = false;
  }
  else if (cmb_frm_filter_search_type.SelectedItem.Equals("First name  "))
  {
  BindingSource bs = new BindingSource();
  bs.DataSource = dgv_emp_search.DataSource;
  bs.Filter = dgv_emp_search.Columns[1].HeaderText.ToString() + " LIKE '%" + txt_frm_filter_value.Text + "%'";
  dgv_emp_search.DataSource = bs;
  }

  }
  }




txt_frm_filter_value is the name of textbox

cmb_frm_filter_search_type is name of combobox where we can select a search type like first name, last name, and form number

now my problem is :  in my datagridview lots of record will be come from different tables , that is employee form number wise...

so i want to search directly form number in datagridview..

i cant search form number in datagridview..
my query is not set valid....

if you again not understand then ask me please..


thank you

hey asmita,


can you elobrate your question please .then we understand what exazactly you want .then we provide correct solution.




hope you understand