select value drop down list and textbox the multiply automat

Question

sir The value select from drop down list and another value input textbox the output automatically multyply and show textbox2

Raja T · Answer

Hi Try like In DropDownList_SelectedIndexChanged event get the selected value like protected void DropDownList1_SelectedIndexChanged(object sender EventArgs e) { int selectVal = Convert.ToDouble( DropDownList1.SelectedItem.Value ); int textbox1_val =Convert.ToDouble( TextBox1.Text ); //then get textbox 1 value like below TextBox2.Text = selectVal * textbox1_val //Assign the value textbox 2 }

Ranjit Powar · Answer

double result=Convert.ToDouble(TextBox1.Text)*Convert.ToDouble(DropDownList.Text); TextBox2.Text=result.ToString();