handler null int binding validation

[Sergio Ayala]

Hi, 

I need to cast an int value

from int to int?

Is possible?

I cannot modify my class and it is this:

and since its primitive value is "0", the textbos is already shown with a zero:

 I need it to be null so that it displays like this:

[Priyanka Karthikeyan]

Hi Sergio Ayala,

To achieve your requirement, you can bind the TValue as int?. Please find the code snippet and sample for your reference.

<SfNumericTextBox TValue="int?" @bind-Value="@numericInstance.values">

</SfNumericTextBox>

@code {

    public class Numeric{

        public int? values {get; set;}

    }

 

    private Numeric numericInstance = new Numeric();

}

Sample: https://blazorplayground.syncfusion.com/rDVgZbMZTfgMyHIm

If this does not meet your requirement, please let us know. We are happy to assist you further.

Regards,

Priyanka K

[Sergio Ayala]

You have not understood me. I need something like that because I can't modify my class.

there is some way to cast?

[Priyanka Karthikeyan]

Hi Sergio Ayala,

Thank you for bringing up this concern. Ensuring consistency between the class type and the TValue type is indeed crucial. We understand that the attempt to keep the class type as 'int' while binding the value as a nullable integer ('int?') can lead to unexpected issues.

If your aim is to establish a default value of null, We would like to propose the option of binding the value as 'int?' (nullable integer) inside the class. By doing so, you can effectively align the data types and appropriately set null as the default value for the binding.

Regards,

Priyanka K