How to display selected value-from-dropdownlist-after form submit

Question

I have a dropdown list in my form . After submitting the form I don't get selected value from the dropdown list in UI. I only get first value . How to implement this . How to display dropdown selected value after form submit .

Answer 1

You need to use ViewState or Sessions to save the variable and reuse it, It would look something like this:

private void Page_Load()
{
        //If page is not being loaded for first time then set the value another 
        //option would be to check if ViewState["dropdownvalue"] == null and if 
        //not then set the value
    if (Page.IsPostBack)
    {       
        DropDownList1.SelectedValue = ViewState["dropdownvalue"]
    }
}
protected void Submit_Click(object sender, EventArgs e)  
{   
    ViewState["dropdownvalue"] = DropDownList1.SelectedValue;  
    // Do everything else
}