I want to retrive data form databae base on combobox select

Hi Kunal


Here is the Example

First Select the combobox SeSelectedIndexChanged Event
Here u use Datagridview on Windows form

  private void comboCountry_SelectedIndexChanged(object sender, EventArgs e)
        {


            if (comboCountry.SelectedValue.ToString() != "")
            {


                String country= comboCountry.SelectedValue.ToString().Trim();


                FillParticipantDetails(country);
            }


        }


        private void FillParticipantDetails(String country)
        {
            try
            { 
System.Data.DataTable dt = new System.Data.DataTable();
                }
            }

Try it once.
If it useful Please Mark The Answer

NagaRaju T