C# form required attribute
@Html.TextBoxFor(m => m.ShortName,
new { @class = "form-control", placeholder = "short name", required="required"})C# form required attribute
@Html.TextBoxFor(m => m.ShortName,
new { @class = "form-control", placeholder = "short name", required="required"})C# ValidationAttribute required when
public class RequiredIfAttribute : ValidationAttribute, IClientValidatable
{
private String PropertyName { get; set; }
private Object DesiredValue { get; set; }
private readonly RequiredAttribute _innerAttribute;
public RequiredIfAttribute(String propertyName, Object desiredvalue)
{
PropertyName = propertyName;
DesiredValue = desiredvalue;
_innerAttribute = new RequiredAttribute();
}
protected override ValidationResult IsValid(object value, ValidationContext context)
{
var dependentValue = context.ObjectInstance.GetType().GetProperty(PropertyName).GetValue(context.ObjectInstance, null);
if (dependentValue.ToString() == DesiredValue.ToString())
{
if (!_innerAttribute.IsValid(value))
{
return new ValidationResult(FormatErrorMessage(context.DisplayName), new[] { context.MemberName });
}
}
return ValidationResult.Success;
}
public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
{
var rule = new ModelClientValidationRule
{
ErrorMessage = ErrorMessageString,
ValidationType = "requiredif",
};
rule.ValidationParameters["dependentproperty"] = (context as ViewContext).ViewData.TemplateInfo.GetFullHtmlFieldId(PropertyName);
rule.ValidationParameters["desiredvalue"] = DesiredValue is bool ? DesiredValue.ToString().ToLower() : DesiredValue;
yield return rule;
}
}C# ValidationAttribute required when
$.validator.unobtrusive.adapters.add('requiredif', ['dependentproperty', 'desiredvalue'], function (options) {
options.rules['requiredif'] = options.params;
options.messages['requiredif'] = options.message;
});
$.validator.addMethod('requiredif', function (value, element, parameters) {
var desiredvalue = parameters.desiredvalue;
desiredvalue = (desiredvalue == null ? '' : desiredvalue).toString();
var controlType = $("input[id$='" + parameters.dependentproperty + "']").attr("type");
var actualvalue = {}
if (controlType == "checkbox" || controlType == "radio") {
var control = $("input[id$='" + parameters.dependentproperty + "']:checked");
actualvalue = control.val();
} else {
actualvalue = $("#" + parameters.dependentproperty).val();
}
if ($.trim(desiredvalue).toLowerCase() === $.trim(actualvalue).toLocaleLowerCase()) {
var isValid = $.validator.methods.required.call(this, value, element, parameters);
return isValid;
}
return true;
});Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
