title: how to trigger an event when an item is selected from combobox in c#.net
body: <pre><code>        string Sql_type = "select property_type_id,type_name from lk_tb_property_type";
  
          OleDbCommand cmd_type = new OleDbCommand(Sql_type, con);
  
          OleDbDataReader DR_two = cmd_type.ExecuteReader();
          DataTable table_two = new DataTable();
          table_two.Load(DR_two);
  
          //begin adding line
          DataRow row_two = table_two.NewRow();
          row_two["type_name"] = "Select Poperty Name";
          row_two["property_type_id"] = 0;
          table_two.Rows.InsertAt(row_two, 0);
          //end adding a line
  
  
          combo_type.DataSource = table_two;
  
  
          combo_type.DisplayMember = "type_name";
          combo_type.ValueMember = "property_type_id";
          combo_type.Text = "Select Poperty Name";
  </code></pre>
  
  <p>with this code i am fetching values for a combobox from database.now suppose my combobx is having 2 items named A and B..I have one more combobox...now what i want is that when user chooses item A from combobox the second combobox should display  data related to item A when  user chooses item B then data related to item B should be displayed...sohow to achieve this...??</p>