select timezone in dropdown

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2.71/5 (3 votes)

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Hello All,
I have a asp.net dropdown and I am binding all timezones to it.

C#

ddlTimeZone.DataSource = TimeZoneInfo.GetSystemTimeZones();//binding time zone list in drop down list
ddlTimeZone.DataValueField = "Id";
ddlTimeZone.DataTextField = "DisplayName";
ddlTimeZone.DataBind();

What I want is when a user from Australia visit my page, I want to by default select his timezone in dropdown and if user is from canada, his timezone should be selected.

I appreciate any help, suggestion, code, link..

Thanks in advance

Posted 19-Aug-13 3:48am

salah9

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Mike Meinz · Accepted Answer · 2013-08-19T03:58:00

Solution 1

I found this via Google:

Automatic Timezone Detection Using JavaScript[^]

jsTimezoneDetect[^]

get client time zone from browser[^]

Auto detect a time zone with JavaScript[^]

Posted 19-Aug-13 3:58am

Mike Meinz

Updated 20-Aug-13 2:42am

v4

Comments

Herbisaurus 19-Aug-13 10:06am

*****

salah9 20-Aug-13 0:18am

The first link provided wont work, by using the code given i will get result in minutes not in timezone, if i got minutes i need to convert that minutes to hours and then match with the list which c# provides.
for example if the result is -330(which divied by 60 will give 5.5) 5.5 is the hour difference.
Now there are 3 countries which have the time difference of 5.5, i cant get accurate from which of the 3 country user is from..

salah9 20-Aug-13 0:19am

And second link doesnt provide timezone completely.. it just give country/city name

Mike Meinz 20-Aug-13 8:42am

See "Automatic Timezone Detection Using JavaScript" in revised Solution 1.

**Joezer BH** · Accepted Answer · 2013-08-19T04:01:00

Solution 2

Note that this is not a C# question since you need to detect the timezone on the client side. This means that you probably need to use Javascript to do the job.

See: Auto detect a time zone with JavaScript[^]
Or have a look at this W3Schools' tutorial[^]

You can add values to the DropDownList to match the result given by the JS and then in JS autoselect the right item.

Cheers,
Edo

Posted 19-Aug-13 4:01am

Joezer BH

Updated 19-Aug-13 4:05am

v4

Comments

Herbisaurus 19-Aug-13 10:06am

*****

salah9 20-Aug-13 0:19am

??

salah9 20-Aug-13 0:20am

first link wont provide user timezone, it provide user city name

Joezer BH 20-Aug-13 6:29am

The getTimezoneOffset() provides the Time Zone Offset