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Let the user select NULL as the Date

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Date/Time Pickers
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Joseph
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Joseph asked on 26 May 2011, 05:28 AM
Hi All,

Ok so the full scenario is i have a grid and in that grid is a column bound to a Nullable Date. Let's call this column "End Date".
Clearly not all things have an end date so end date can be null.

I want to use an editor template to turn the start date text field into a datepicker when in edit mode. Problem is...

How can the user select the null date? Is it possible?


regards,
James

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Georgi Krustev
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answered on 26 May 2011, 10:21 AM
Hello Joseph,

You can achieve your goal using edit template for the aforementioned Nullable<DateTime> property. The edit template should be strongly-typed and the defined model should be Nullable<DateTime>. Thus you can show DatePicker UI component which accepts Nullable<DateTime>. You can check EditTemplates provided with Telerik Extensions for ASP.NET MVC. In order end user to enter null for End Date should just clear input field and update the edited row.

Regards,
Georgi Krustev
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Kevin
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answered on 06 Oct 2011, 07:44 PM
Georgi, 
The standard telerik DatePicker editor template already has a nullable DateTime model:

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<DateTime?>" %>
 
<%= Html.Telerik().DatePickerFor(m => m) %>

I even tried to change it to Nullable<DateTime> and it has the same results.  Can you provide some more detail here?  Is there an example of this working in a grid on your online demos?

Steve
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Kevin
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answered on 06 Oct 2011, 09:54 PM
I fixed this using the razor editor template:
@model Nullable<DateTime>
 
@(Html.Telerik().DatePicker()
        .Name(ViewData.TemplateInfo.GetFullHtmlFieldName(string.Empty))
        .HtmlAttributes(new { id = ViewData.TemplateInfo.GetFullHtmlFieldName(string.Empty) + "_wrapper" })
        .Value(Model)
)

This editor template was used in this demo: http://demos.telerik.com/aspnet-mvc/razor/datepicker/edittemplate
The interesting thing is the online demo is broken.  When you clear out the date field it takes you to a page saying "Sorry, we couldn't find the page you're looking for."

Steve
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Date/Time Pickers
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Joseph
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Georgi Krustev
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Kevin
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