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Compare Validator: Using Dateadd to compare dates in c#

I have the following code working in VB.

How can I achieve the same in c#?
<asp:CompareValidator ID="Check14DayRule" runat="server" ControlToValidate="txtStartDate"
                                    ValueToCompare='<%# DateAdd(DateInterval.Day, 14, Now()).ToString("MM/dd/yyyy") %>'
                                    ErrorMessage="The training must be more than 14 days away" Display="None" Type="Date"
                                    Operator="GreaterThanEqual" EnableClientScript="False"></asp:CompareValidator>

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devnewbee
Asked:
devnewbee
1 Solution
 
carlnorrbomCommented:
Hi,
As far as I can see it should work without any changes? If the page is using a vb code behind file and you want to change it to C#, simply add a new code behind file "pagename.aspx.cs" and change the page declaration to reflect it's C# rather than VB and change the name of the code behind file.
/Carl.
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devnewbeeAuthor Commented:
Actually, I am using this code on a vb app.  If I take it over to a c# app, that is when I run into problems.

The error I get is:

CS0103: The name 'DateAdd' does not exist in the current context
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