NullDisplayText attribute

[Aaron]

I'm finding RadGridView doesn't respect the "NullDisplayText" attribute given within my model. I found a post 6 years ago that says "Yeah, we should do that..."

I haven't seen anything else. Is there a good, extensible workaround? Will this be added in the future?

[Vlad]

Hi,

 Can you clarify what is NullDisplayText?

Regards,
Vlad
the Telerik team

[Aaron]

http://msdn.microsoft.com/en-us/library/cc679253(v=vs.95).aspx 

I know the GridView handles "DataFormatString" but it doesn't seem to handle NullDisplayText.

[Vlad]

Hi,

 This will be added for our upcoming Q3 2012 release (after three weeks). 

Greetings,
Vlad
the Telerik team

[Robert]

And in Q1 2016 it appears not to be working.  NullDisplayText is completly ignored (though DataFormatString is applied).

[Robert]

Ah, I was trying to use it in WPF; it is sad it isn't there though :)

[Yoan]

Hello,

It is working in my WPF test project. You can find it attached. However, if you have applied DataFormatString of the column, the NullDisplayText attribute will not be respected.

Regards,
Yoan
Telerik

[Robert]

I have a column of weights, but for some rows, the weight is unknown (not 0, but really unknown).  I would like it to say "4 kg" in the cell that belongs to a row with a weight that is 4 kg, and "" (the empty string) in the cell that belongs to a row with an unknown weight.

 

This functionality exist with plain bindings (via TargetNullValue) for ordinary TextBoxes.  Syncfusion SfDataGrid (a competitors alternative to RadGridView) supports this.  I am fine with needing to do things different with Telerik controls, but surprised that such a simple feature is missing.

[Yoan]

Hello Robert,

Maybe I am missing something, but the TargetNullValue is working as expected. I have attached a modified version of my previous attached project. I have used the TargetNullValue property in the DataMemberBinding of the column and it is respected. 

Regards,
Yoan
Telerik

[Robert]

So we can now agree that this doesn't work.  FormatString combined with TargetNullValue supresses the later.  I am opening a ticket then.

[Stefan Nenchev]

Hi Robert,

I just wanted to update the forum thread that  the behavior is logged as a bug in our Feedback and Ideas Portal at the following page - StringFormat in DataMemberBinding does not respect TargetNullValue property. We have investigated it in the ticket you have raised and confirmed the undesired effects.

Regards,
Stefan Nenchev
Telerik