RadDatePicker - Style not updated in viewstate

[Marbry]

I have a RadDatePicker, and I'm setting the background color on the server side when it contains an invalid value like so:

dtStartDate.DateInput.Style.Add(HtmlTextWriterStyle.BackgroundColor, "red");

Then on the client side, I have this handler attached to the ClientEvents-OnValueChanged event of the child DateInput of the RadDatePicker.

function RemoveInvalidStyle(sender, args)
{
    sender.get_styles().EnabledStyle[0] = sender.get_styles().EnabledStyle[0].replace("background-color:red;", "");
    sender.get_styles().HoveredStyle[0] = sender.get_styles().HoveredStyle[0].replace("background-color:red;", "");
    sender.get_styles().FocusedStyle[0] = sender.get_styles().FocusedStyle[0].replace("background-color:red;", "");
    sender.updateCssClass();
}

This works just fine, they both change the background, but after the client call the background will be reset again on the first postback.  Is this due to that not being persisted in the viewstate?  Or is it being overwritten by the property set on the parent wrapper?

[Mira]

Hello Marbry,

In order to implement the desired functionality, I recommend that you override the .riError style of the RadInput.
Please examine the following help topics for additional information:
Styles
CSS Skin File Selectors

I hope this helps.

Best wishes,
Mira
the Telerik team

[Marbry]

I was able to get this to work, just resetting it on the server side in addition to the client.  I just added an else and called,

dtStartDate.DateInput.Style.Value = "";

I tried calling the Remove method, but it didn't seem to do anything.  The style was still populated immediately after the call.

dtStartDate.DateInput.Style.Remove(HtmlTextWriterStyle.BackgroundColor);

BTW - the first link you listed above is dead.

[Mira]

Hello Marbry,

I am glad the issue is resolved. Thank you for sharing the solution with the community.
Here is the correct version of the first link.

All the best,
Mira
the Telerik team

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