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ValueChanged event with lambda

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Juan Angel
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Juan Angel asked on 08 Nov 2020, 10:41 AM

Documentation suggest a lamba expression in ValueChanged event because it's requiered by framewoek, but for me this sentences are equivalent:

from the handler: @result
<br />
from model: @theTbValue
<br />
 
<TelerikTextBox ValueChanged="@( (string s) => MyValueChangeHandler(s) )" Value="@theTbValue"></TelerikTextBox>
 
<TelerikTextBox ValueChanged="@MyValueChangeHandler" Value="@theTbValue"></TelerikTextBox>
 
@code {
    string result;
 
    public string theTbValue { get; set; } = "lorem ipsum";
 
    private void MyValueChangeHandler (string theUserInput)
    {
        result = string.Format("The user entered: {0}", theUserInput);
 
        //you have to update the model manually because handling the ValueChanged event does not let you use @bind-Value
        theTbValue = theUserInput;
    }
}

 

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Kristian
Telerik team
answered on 11 Nov 2020, 04:41 PM

Hello Juan Angel,

The approach you are using is the correct one.

Using only lambdas was a limitation in the Blazor framework before but it seems they fixed it with one of the new releases.

I changed the documentation and it will go live with our next deploy.

Thanks for bringing this up and helping us to improve the documentation.

Regards,
Kristian
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Juan Angel
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Kristian
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