how to multiply two combo box value and put the output into textbox

Question

how to multiply two combo box value and put the output into textbox. for example diesel consumed textbox combox1 combox2 20 15 out put as 3000 how to do? using asp.net with csharp. Regards Rao.

Satyapriya Nayak · Answer

Hi Nar Please tell me this is a windows apps or web appsyou should be clear about that.In the above post you have mentioned about combobox and using asp.net with csharp. What is this? Second thing diesel consumed textbox combox1 combox2 20 15 out put as 3000 By multiply 20*15=300 Please ask your questions clearly so that you will get correct answer. using asp.net with csharp Untitled Page using System; using System.Collections; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq; namespace WebApplication4 { public partial class _Default : System.Web.UI.Page { protected void Button1_Click(object sender EventArgs e) { double d1 = Convert.ToDouble(DropDownList1.SelectedItem.Text.ToString()); double d2 = Convert.ToDouble(DropDownList2.SelectedItem.Text.ToString()); TextBox1.Text = (d1 * d2).ToString(); } protected void Page_Load(object sender EventArgs e) { if (!IsPostBack) { DropDownList1.Items.Add(20); DropDownList2.Items.Add(15); } } } } Thanks

Santhosh Kumar Jayaraman · Answer

in button click textbox1.Text= int32.Parse(cmb1.SelectedValue.ToString())*int32.Parse(cmb2.SelectedValue.ToString())