<div>
on the item template you should be able to set the class<br />
<br />
class = '&lt;%# ((TimeSpan) DateTime.Now - DateTime.Parse(Eval(&quot;Start<wbr />Date&quot;).ToS<wbr />tring())).<wbr />Days &gt;&nbsp;21 ? &quot;redClass&quot; : &quot;NormalClass&quot; %&gt;'
</div>


on the item template you should be able to set the class

class = '<%# ((TimeSpan) DateTime.Now - DateTime.Parse(Eval("StartDate").ToString())).Days > 21 ? "redClass" : "NormalClass" %>'

<div>
Thanks Kyle, keep coming with an error. <br />
<br />
BC30108: 'TimeSpan' is a type and cannot be used as an expression.
</div>


Thanks Kyle, keep coming with an error.

BC30108: 'TimeSpan' is a type and cannot be used as an expression.

<div>
Try DateTime.TimeSpan instead of just the timespan.
</div>


Try DateTime.TimeSpan instead of just the timespan.

<div>
Thanks Scott, got it to work like a champ.
</div>


Thanks Scott, got it to work like a champ.

<div>
Awesome! &nbsp; &nbsp;Did you use momentjs?
</div>


<div>
Yes, I then added it to the cell style of my gridview.
</div>


Yes, I then added it to the cell style of my gridview.

<div>
<div class="content wysiwyg-content">
I'm using ASP.net and have a gridview with a date column. I'm trying to highlight in redfont all the dates that are 21 days greater than Todays current date. I have a css .redfont with bold font-weight. I'd like to do this as an itemtemplate. What the way to do this via EVAL.
</div>
</div>


I'm using ASP.net and have a gridview with a date column. I'm trying to highlight in redfont all the dates that are 21 days greater than Todays current date. I have a css .redfont with bold font-weight. I'd like to do this as an itemtemplate. What the way to do this via EVAL.

Red Font for Dates 21 &gt; than today

The successor to Active Server Pages, ASP.NET websites utilize the .NET framework to produce dynamic, data and content-driven web applications and services. ASP.NET code can be written using any .NET supported language. As of 2009, ASP.NET can also apply the Model-View-Controller (MVC) pattern to web applications

ASP.NET

Cascading Style Sheets (CSS) is a language used for describing the look and formatting of a document written in a markup language. Usually used to change web pages and user interfaces written in HTML, it can also be applied to any kind of XML document. CSS is designed primarily to distinguish the content of a document from its presentation.

Red Font for Dates 21 &gt; than today

Red Font for Dates 21 > than today