How to check if Parameter is binded in C# blazor?

Question

I've written a component which has 30 or so parameters and would like to automatically setup this component when values are binded.

This works fine when a value is set, however some of the values are nullable and can be null. When given a value of 'null' the component cannot check if it's set, so I'm wondering:

Is it possible to check in the component if a variable is binded? If so, how?

if(DemoValue.isBinded) {}

Answer 1

The standard pattern for using SetParametersAsync is:

    public override Task SetParametersAsync(ParameterView parameters)
    {
        // You should always do this first
        parameters.SetParameterProperties(this);

        // do you stuff

        // pass an empty set of parameters to base as you've already set them
        return base.SetParametersAsync(ParameterView.Empty);
    }

So your version can be updated to this.

    private List<string> bindedParameters = new();
    public override Task SetParametersAsync(ParameterView parameters)
    {
        parameters.SetParameterProperties(this);

        foreach (var parameter in parameters)
        {
            bindedParameters.Add(parameter.Name);
        }

        return base.SetParametersAsync(ParameterView.Empty);
    }