CODEWITHSUNDEEP
c#asp.netdrop-down-menu
Esha
Esha

Reputation: 389

Set dropdown list to initial value

I have manually added values in dropdown list using for loop.

 for (int i = 1; i <= 31; i++)
    {
        date0.Items.Add(i.ToString());
        date1.Items.Add(i.ToString());
        date2.Items.Add(i.ToString());
        date3.Items.Add(i.ToString());
    }

    for (int j = 1; j <= 12; j++)
    {
        month0.Items.Add(j.ToString());
        month1.Items.Add(j.ToString());
        month2.Items.Add(j.ToString());
        month3.Items.Add(j.ToString());

    }

    for (int k = DateTime.Now.Year; k <= 2020; k++)
    {
        yyyy0.Items.Add(k.ToString());
        yyyy1.Items.Add(k.ToString());
        yyyy2.Items.Add(k.ToString());
        yyyy3.Items.Add(k.ToString());
    }

Now on clear button I want to clear out these values and set them to initial. I tried calling the function in which I have initialized them. But it's not happening. Can someone tell me why?

Upvotes: 0

Views: 466

Answers (2)

whastupduck
whastupduck

Reputation: 1166

You can reset it to the first record by setting the SelectedIndex to 0 so that the first element in the list will be selected:

date0.SelectedIndex = 0;
date1.SelectedIndex = 0;
date2.SelectedIndex = 0;
date3.SelectedIndex = 0;


month0.SelectedIndex = 0;
month1.SelectedIndex = 0;
month2.SelectedIndex = 0;
month3.SelectedIndex = 0;

yyyy0.SelectedIndex = 0;
yyyy1.SelectedIndex = 0;
yyyy2.SelectedIndex = 0;
yyyy3.SelectedIndex = 0;

You can put this on the Clear button.

Upvotes: 1

Ahmad
Ahmad

Reputation: 12707

You will need to fill the dropdownlist only if the page is Not postback

if (! IsPostBack) {

   //Fill out the dropdown list

}

and make sure to set SelectedIndex = 0 for those you want to set back to initial values

month0.SelectedIndex = 0;

Upvotes: 2

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