Last Updated: 04 Jun 2019 08:21 by ADMIN
Created on: 14 Nov 2014 08:42
Category: DataForm
Type: Bug Report
User cannot insert decimal data when editing an item
Reproducible only in .Net 4.5. 
Vladimir Stoyanov
Posted on: 04 Jun 2019 08:21
Hello Buks,

Thank you for the provided information. 

Indeed the described behavior is reproducible in .net versions higher than 4.5. That said, I do hope that one of the suggested workarounds will be suitable for your scenario.

Vladimir Stoyanov
Progress Telerik
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Posted on: 28 May 2019 09:28
Seeing the same problem, but I am targeting .NET 4.7.2
Posted on: 22 Sep 2017 10:26
Another possible solution would be to set the FrameworkCompatibilityPreferences.KeepTextBoxDisplaySynchronizedWithTextProperty to false. More information can be found here:
Posted on: 19 Nov 2014 15:27
This behaviour is reproducible only in .Net 4.5. It can be observed with a TextBox outside of RadDataForm if its Binding.UpdateSourceTrigger property is set to PropertyChanged.  As it turns out, this behaviour is the expected one since Microsoft had introduced it as a fix for an issue in .Net 4.0.  You can check the following article:

 for a reference. As Microsoft had stated: If you're targeting 4.5+ and you really want UpdateSourceTrigger=PropertyChanged, consider also setting Delay=300. This property (new in 4.5) causes the binding to wait 300ms before committing the edit, giving the user time to type a digit after the decimal point. This also delays the validation feedback until the user has been idle for 300ms - you may or may not like this. [The value 300 is just what I've found to be comfortable; you can adjust it to your own taste.]