DataGrid - Validator using another property of the EditItem

[paulosdfigueiredo]

Imagine i want to edit one Item and validate if the new name already exists on server. I need to know the Id of the current item, so i can ignore it when comparing.

Is there any way to use other properties from the current item in the validator? Or whats the best way to access the current EditItem?

[stsrki]

Yes, that's possible. Validator is just a function that you can write by yourself. If you want to check for your current Id, the best solution is to get it from the selected row item with binding: @bind-SelectedRow="@selectedEmployee".

And then have a validator, like this:

public void CheckEMail( ValidatorEventArgs validationArgs )
{
    // check selectedEmployee.Id here

    ValidationRule.IsEmail( validationArgs );

    if ( validationArgs.Status == ValidationStatus.Error )
    {
        validationArgs.ErrorText = "EMail has to be valid email";
    }
}

[paulosdfigueiredo]

That's the workaround i am using, but it's not totally correct.

Edit is different from Select, i can be editing an item that's not selected.

Using the Demo, i am editing Id 5 while 4 is selected.