You could try a custom workflow activity to return the user's time zone. One you have it you should then be able to use it in your dialog.
Sample: Retrieve Time Zone Information
Sample: Update Next Birthday Using a Custom Workflow Activity
Code to return the time zone friendly name would look something like this:
private int? _timeZoneCode;
private void RetrieveCurrentUsersSettings(IOrganizationService service)
{
var currentUserSettings = service.RetrieveMultiple(
new QueryExpression(UserSettings.EntityLogicalName)
{
ColumnSet = new ColumnSet("localeid", "timezonecode"),
Criteria = new FilterExpression
{
Conditions =
{
new ConditionExpression("systemuserid", ConditionOperator.EqualUserId)
}
}
}).Entities[0].ToEntity<UserSettings>();
_timeZoneCode = currentUserSettings.TimeZoneCode;
}
private string RetrieveTimeZoneByCode(IOrganizationService service)
{
var timeZoneDefinitions = service.RetrieveMultiple(
new QueryExpression(TimeZoneDefinition.EntityLogicalName)
{
ColumnSet = new ColumnSet("standardname", "timezonecode"),
Criteria = new FilterExpression
{
Conditions =
{
new ConditionExpression("timezonecode", ConditionOperator.Equal, _timeZoneCode)
}
}
}).Entities[0].ToEntity<TimeZoneDefinition>();
return timeZoneDefinitions.StandardName;
}
Jason Lattimer
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