how do you sort by property datetime if a property is not empty - Razor

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Carlos 338 posts 472 karma points

Jan 09, 2013 @ 00:45
0

How do you Sort By Property date/time if a property is not empty
So I have a list of items.
Some of my nodes have the option to put in a date/time property that are in the list. I want to be able to list items by ascending or descending based on the Date/Time property only IF the date/time property is filled in.

Here is my simple list right now.
How do I use the startDateTimeProperty to sort the list only IF the node has that property and if it filled in?
Thanks in advance
```
 <ul id="listingPageItems">
var startDateTime = @item.startDateTimeProperty;
@foreach (var item in @Model.Children.Where("!hideFromAllMenus")){
<li>
@item.Name
 @if (!String.IsNullOrWhiteSpace(item.eventTimeHeader))
 {
<div class="dateTimeHeader">@item.eventTimeHeader </div>
}
</li>
}
</ul>
```
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Mike Chambers 636 posts 1253 karma points c-trib

Jan 11, 2013 @ 11:47
0
what are you wanting to do with those items in your enumeration that have an empty eventTimeHeader? Exclude? or place at the top or bottom of the list?

but I think you can just add an OrderBy
```
@Model.Children.Where("!hideFromAllMenus").OrderBy("eventTimeHeader")
```
```
or
```
```
@Model.Children.Where("!hideFromAllMenus").OrderByDescending("eventTimeHeader")
```
if you need to get more logic in there... then you may have to revert to linq statements..

eg OrderBy(x => (DateTime.Parse(x.HasValue("eventTimeHeader", x.GetPropertyValue("eventTimeHeader"), DateTime.Now.ToString()).ToString()))

but that may mean further refactoring... to get your enumeration as a DynamicNodeList rather than a dynamic
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How do you Sort By Property date/time if a property is not empty