Question

I have a web app hosted with GoDaddy (so the web server is in Arizona – Mountain Time). My users are mostly in Central Time Zone, but I could have some from other time zones.

I have a web page with a databound dropDownList using TimeZoneInfo, and I want to set the selected value of this dropDownList to whatever timeZone the user is in. Here’s my code currently:

protected void Page_Load(object sender, EventArgs e)
{
    DropDownListTimeZone.DataSource = TimeZoneInfo.GetSystemTimeZones();
    DropDownListTimeZone.DataBind();

    TimeZoneInfo cst = TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time");
    DropDownListTimeZone.SelectedValue = cst.DisplayName;
}

It’s ok, but I want it to be smarter for those users who aren’t in CST. I was hoping there is some way to grab the user’s TimeZoneInfo from something like Page.Request.?? but I can’t figure it out.

Is there an easy solution to this?

Answer 1

I think this would require a bit of javascript; since it’s running on the user’s browser, it could pick up whatever time zone the computer is set to and set the selected item in the dropdown accordingly.

http://www.onlineaspect.com/2007/06/08/auto-detect-a-time-zone-with-javascript/