protected void SubmitButton_Click(object sender, EventArgs e)
    {
        da = new SqlDataAdapter("insert into Transport_Details(T_Type,T_category,T_Name,To_Country,To_City,From_Country,From_City,Date,Time,Amount,Description)values('" + typeDropDownList.SelectedItem.Text + "','" + DropdownCategory.SelectedItem.Text + "','" + NameTextBox.Text + "','" + DropDownToCountry.SelectedItem.Text + "','" + DropDownToCity.SelectedItem.Text + "','" + DropDownFromCountry.SelectedItem.Text + "','" + DropDownFromCity.SelectedItem.Text + "','" + TextBox1.Text + "','" + TimeTextBox.Text + "'," + AmtTextBox.Text + ",'" + DescTextBox.Text + "')", con);
        dt = new DataTable();
        da.Fill(dt);
        Label2.Text   = "Data Sumbmit";
        TextBox1.Text = "";
        DropdownCategory.ClearSelection();
        DropDownToCountry.ClearSelection();
        DropDownToCity.ClearSelection();
        DropDownFromCountry.ClearSelection();
        DropDownFromCity.ClearSelection();
        NameTextBox.Text = "";
        typeDropDownList.ClearSelection();
        TimeTextBox.Text = "";
        AmtTextBox.Text  = "";
        DescTextBox.Text = "";

        da = new SqlDataAdapter("select  T_Id,T_Type,T_Category,T_Name,To_Country,To_City,From_Country,From_City,convert(varchar,Date,106)Date,Time,Amount,Description  from Transport_Details order by T_Id DESC", con);
        dt = new DataTable();
        da.Fill(dt);
        if (dt.Rows.Count > 0)
        {
            GridViewTransportDetails.DataSource = dt;
            GridViewTransportDetails.DataBind();
        }
        else
        {
            GridViewTransportDetails.DataSource = "";
            GridViewTransportDetails.DataBind();
        }
    }
    protected void DropDownToCountry_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (DropDownToCountry.SelectedIndex > 0)
        {
            da = new SqlDataAdapter("select  CityName from CountryCityMaster where CountryName='" + DropDownToCountry.SelectedItem.Text + "' order by CityName", con);
            dt = new DataTable();
            da.Fill(dt);
            if (dt.Rows.Count > 0)
            {
                DropDownToCity.DataSource    = dt;
                DropDownToCity.DataTextField = "CityName";
                DropDownToCity.DataBind();

                DropDownToCity.Items.Insert(0, "Select City");
                DropDownToCity.Items.Insert(dt.Rows.Count + 1, "Other City");
            }
            else
            {
                DropDownToCity.DataSource = "";
                DropDownToCity.DataBind();

                DropDownToCity.Items.Insert(0, "Select City");
            }
        }
        else
        {
            DropDownToCity.DataSource = "";
            DropDownToCity.DataBind();

            DropDownToCity.Items.Insert(0, "Select City");
        }
    }