Required Vaildation And Other Like Radzen

Required Field For Vaildation

Cause I Want Field To Be Required When COnditional Be Like Auto Create Somthing CheckBox When True Disible Requrired But Else The Somthing Be Required

<MCheckBox @bind-Value="Model.AutoCreate" Label.../>
<MTextField @bind-Value="Model.Somthing" Disabled="Model.AutoCreate" Required="@(!Model.AutoCreate)".../>

There’s No Required=“@(!Model.AutoCreate)”

Or You Can Make It Like This

<MCheckBox @bind-Value="Model.AutoCreate" Label.../>
<MTextField @bind-Value="Model.Somthing" Disabled="Model.AutoCreate">
    <Vaildations>
        @if (!Model.AutoCreate)
        {
              <MRequiredField/>
        }
    </Vaildations>
</MTextField>

[capdiem]

@wisamidris7 You can use Rules implement it.

<MForm @ref="_form">
    <MCheckbox @bind-Value="_autoCreate"></MCheckbox>
    <MTextField @bind-Value="_value" Rules="Rules"></MTextField>
    <MButton OnClick="OnSubmit">Sumbit</MButton>
</MForm>

@code {

    private static Dictionary<string, Func<string, StringBoolean>> s_rules => new()
    {
        { "required", (s) => string.IsNullOrWhiteSpace(s) ? "Required" : true }
    };

    private bool _autoCreate;
    private string? _value;
    private MForm? _form;

    private IEnumerable<Func<string, StringBoolean>> Rules
    {
        get
        {
            var rules = new List<Func<string, StringBoolean>>();

            if (!_autoCreate)
            {
                rules.Add(s_rules["required"]);
            }

            return rules;
        }
    }

    private void OnSubmit()
    {
        // _form!.ResetValidation();
        _form!.Validate();
    }

}

[capdiem]

@wisamidris7

<MTextField @bind-Value="_value" Rules="@(new List<Func<string, StringBoolean>>() { e => (_autoCreate || !string.IsNullOrWhiteSpace(e)) ? true : "Required" })"></MTextField>