Hi Art Vandelay,
Thank you for reaching out with your question about adding validation without using DataAnnotations on a class.
While DataAnnotations provide a standardized and elegant way to define validation rules, if you prefer to implement validation directly in the Blazor component without relying on DataAnnotations, you can do so using conditional checks within the component. Below is a sample code snippet demonstrating how you can add a simple "field is required" validation for the SfTextBox:
|
<div class="col-md-6">
<SfTextBox ID="email" @bind-Value="appUser.Email" ShowClearButton="true" Placeholder="Enter
email" Width="350px"></SfTextBox>
@if (string.IsNullOrWhiteSpace(appUser.Email))
{
<p style="color:
red;">Email is required.</p>
}
</div>
@code {
private AppUser appUser = new AppUser();
public class AppUser
{
public string Email { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
}
}
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In this example, we manually check if the email field is null or consists only of whitespaces. If it is, we display a validation message. This approach allows you to have custom validation logic within your component.
If you have any further questions or if there's anything else I can assist you with, please feel free to let me know.
