adding values to the dropdownlist via loop in asp.net

Question

I'm developing web-application, in this I want to add all months values on the client side browser in registration form.

I'm doing it manually by adding all months' values one-by-one. I want to know is it possible to add all months with by putting one for loop in my code or not.

Suggest me if it's possible.

Thanks

Omar · Accepted Answer · 2012-07-03 09:46:50Z

5

Here you can do it without the loop:

List<string> months = new List<string>() { "January", "Feburary", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" };
dropDownList1.DataSource = months;
dropDownList1.DataBind();

Or if you insist on using loop:

List<string> months = new List<string>() { "January", "Feburary", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" };
foreach (string month in months)
{
     dropDownList1.Items.Add(month);
}

edited Jul 3, 2012 at 9:46

Omar

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answered Jul 3, 2012 at 9:37

Habib

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1 Comment

Sergio Rosas Over a year ago

Remember to check the IsPostBack condition when using the loop. Not sure how would behave in the first case

Aghilas Yakoub · Accepted Answer · 2012-07-03 09:36:53Z

1

try with this code

foreach (string name in nameList)
{
    ddl.Items.Add(new ListItem(name));
}

answered Jul 3, 2012 at 9:36

Aghilas Yakoub

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Comments

freefaller · Accepted Answer · 2012-07-03 11:00:30Z

1

This is one option...

for (int m = 1; m <= 12; m++)
{
   dd.Items.Add(new ListItem(new DateTime(2000, m, 1).ToString("MMMM"), m));
}

UPDATE

I know the question has already been "correctly answered", but taking into account @Jamie's comment, I thought I would add an alternative using the same principle...

DateTime dt = new DateTime(2000, 1, 1);
for (int m = 0; m < 12; m++)
{
   dd.Items.Add(new ListItem(dt.AddMonths(m).ToString("MMMM"), m));
}

edited Jul 3, 2012 at 11:00

answered Jul 3, 2012 at 9:38

freefaller

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3 Comments

Jamie Keeling Over a year ago

It makes more sense to hardcode the value of months and add them as shown in the answer by @Habib.OSU as they will never change (Well, perhaps the name depending on the calendar used). You're creating a new instance of the DateTime object for each iteration.

freefaller Over a year ago

@Jamie, it makes sense to hard-code if you're not bothered about globalization... I said it was one option, not the only option.

Jamie Keeling Over a year ago

I never said it was the only option either ;). Fair point with globalisation though.

caveman_dick · Accepted Answer · 2012-07-03 09:52:10Z

0

Why do it in code at all? Just statically add the months in the aspx file:

<asp:DropDownList Id="ddlMonths" runat="server">
    <asp:ListItem Text="January" Value="1" />
    <asp:ListItem Text="February" Value="2" />
    <asp:ListItem Text="March" Value="3" />
    <asp:ListItem Text="April" Value="4" />
    ...
</asp:DropDownList>

Last time I checked, the months don't change very much! :)

answered Jul 3, 2012 at 9:52

caveman_dick

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3 Comments

user1487669 Over a year ago

this is only values add one by one ..... I want this same thing via loop - Thanks

caveman_dick Over a year ago

Why waste the CPU time adding them via looping when there are only 12? We have a saying in the UK, "Look after the pennies and the pounds will look after themselves" which works just as well for performance. If you are always thinking how to do thing efficiently...

user1487669 Over a year ago

yes, right now there are 12 only...but in programming it makes sense you always using loops..

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