What's the proper way to extend wiring into a replacement panelboard? Is a potential juror protected for what they say during jury selection? Error, How to stop validation after first error in ASP.NET Core 2.1, Use Visual Studio 2017 with .Net Core SDK 3.0, ASP.NET Core 3.0 not showing on Visual Studio 2019, .NET Core 3 preview 4: 'AddNewtonsoftJson' is not defined, "The project 'Web' must provide a value for Configuration" error after migrating to .NET Core 3, How to apply Client Side validation using Fluent Validation for .Net core. I just have a remark or improvement : it will be better to replace dependentValue.ToString() == DesiredValue.ToString() by string.Equals(dependentValue.ToString(), DesiredValue.ToString(), StringComparison.OrdinalIgnoreCase) or add string comparaison mode as parameter, I found this solution the easiest. Any help pls? Url textbox. @Dan Hunex : In MVC4 I have not managed to work properly on client side and it fires up the validation no matter what the DesiredValue is. Is this homebrew Nystul's Magic Mask spell balanced? UoN.ExpressiveAnnotations.NetCore is the package used for .NET Core applications same functionality as ExpressiveAnnotation package for MVC, Reference URL: https://github.com/uon-nuget/UoN.ExpressiveAnnotations.NetCore. 124,326 Solution 1. So let us start with the notation. Condition: Based on the value of other property in the model, you want to make another property required. Can a black pudding corrode a leather tunic? Giving two attributes are causing issue, how can I combine them? . Light bulb as limit, to what is current limited to? We can achieve this by following below . Why not just removing the default "Required" Annotation from Model and make your custom validation before the "ModelState.IsValid" on Controller 'Post' action? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. c# required attribute validation. By default, these methods search the attribute inheritance hierarchy; for example Attribute.GetCustomAttribute searches for the specified attribute type, or any attribute type that extends the specified attribute type. You can change the attribute to accept a string array with field and value pairs in the following: And create the RequiredIf attribute in the following way: Thanks for contributing an answer to Stack Overflow! I have another property in the model, public DateTime? DependentProperty); rule. Is there a term for when you use grammar from one language in another? RequiredIf attribute in mvc model Thursday, 16 May 2013 Follow the steps and validation of property will be fired as per its value. http://forums.asp.net/t/1924941.aspx?Conditional+Validation+using+DataAnnotation, https://github.com/JaroslawWaliszko/ExpressiveAnnotations. 24.7k 9 60 136. Did the words "come" and "home" historically rhyme? GitHub Gist: instantly share code, notes, and snippets. for this? I have the following condition: The LastName property is required IF the FirstName is null OR StreetAddress is null OR City is null OR State is null OR ZipCode is null. Where to find hikes accessible in November and reachable by public transport from Denver? Why don't American traffic signs use pictograms as much as other countries? public sealed class RequiredIfAttribute : ExpressiveAttribute { private static string _defaultErrorMessage = "The {0} field is required by the following logic: {1}"; /// <summary> /// Gets or sets the default error message. What's more the expressive.annotations.validate.js should be included in bundle below jquery validation files, and added on specified page (see sample proj). What do you call an episode that is not closely related to the main plot? Will Nondetection prevent an Alarm spell from triggering? Nan Yu. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. For C# use the ModelState.Remove(PropName") to remove the validation from some property before calling ModelState.IsValid . @AdelMourad thank you for this complete solution. 503), Mobile app infrastructure being decommissioned, MVC Foolproof - RequiredIf - Greater Than - ENum. Substituting black beans for ground beef in a meat pie. asp.net-mvc-3 validationattribute. I voted up ;), @H.Johnson: No problem, I'm glad it helped ;], I had a problem with the client error messages coming back as "The field [object Object] is invalid." rev2022.11.7.43014. Making statements based on opinion; back them up with references or personal experience. public int? Why does sending via a UdpClient cause subsequent receiving to fail? The error raised this way even shows together with errors raised by the built in, RequiredIf Conditional Validation Attribute, Stop requiring only one assertion per unit test: Multiple assertions are fine, Going from engineer to entrepreneur takes more than just good code (Ep. I also found that I didn't need the JavaScript. Does English have an equivalent to the Aramaic idiom "ashes on my head"? Why don't math grad schools in the U.S. use entrance exams? This allows us to select only one radio button at once and . @H.Johnson: ad 1) MvcUnobtrusiveValidatorProvider.dll should be added automatically to your references by NuGet. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. if Description textbox is having data then Url textbox should require and also if Url is having data then Description should require is it possible to create custom validation with [Requiredif] attribute in MVc3 Return Variable Number Of Attributes From XML As Comma Separated Values, Typeset a chain of fiber bundles with a known largest total space. If you try to use "ModelState.Remove" or "ModelState["Prop"].Errors.Clear()" the "ModelState.IsValid" stil returns false. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, Conditional RequiredIf condition using OR condition, Validation of properties that require the values of other properties, https://www.codeproject.com/Questions/5161571/How-to-use-data-annotation-to-check-for-two-values, Stop requiring only one assertion per unit test: Multiple assertions are fine, Going from engineer to entrepreneur takes more than just good code (Ep. ErrorMessage = Attribute. 503), Mobile app infrastructure being decommissioned. Connect and share knowledge within a single location that is structured and easy to search. Handling unprepared students as a Teaching Assistant. AS per documentation you can use RequireIfAttribute. So I modified the above code to do conditional client side validation with Javascript as well. Data Did the words "come" and "home" historically rhyme? To learn more, see our tips on writing great answers. c# required attribute. rev2022.11.7.43014. /// </summary> public static string DefaultErrorMessage { get { return _defaultErrorMessage; } set { if ( value == null) Find centralized, trusted content and collaborate around the technologies you use most. So, at this point, the LastName property is required and should be between 4 and 30 characters. Should 'using' directives be inside or outside the namespace? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. How does DNS work when it comes to addresses after slash? What are the weather minimums in order to take off under IFR conditions? The content you requested has been removed. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. To do this, we need to add a constructor that takes a string value and then assigns it to a variable. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. It should simplify many declarative validation cases without the necessity of writing additional case-specific attributes or using imperative way of validation inside controllers. How to achieve RequiredIf conditional operation in .NET Core for Model based validation. Connect and share knowledge within a single location that is structured and easy to search. Finding a family of graphs that displays a certain characteristic. Why should you not leave the inputs of unused gates floating with 74LS series logic? Vb net attributes for required field, Required, Declare a required field attribute C# . Asking for help, clarification, or responding to other answers. Not the answer you're looking for? Will it have a bad influence on getting a student visa? If you try to check the equality of an int with an enum directly, you get a compiler error: If you box the enum and int values first (which is what happens when they are passed to the constructor of RequiredIfAttribute) then there is no compiler error but Equals() returns false, since the types differ: To check equality of underlying integer values, you can explicitly cast NotificationMethods.Email to an integer before boxing: You might also consider using const int values instead of enums: Thanks for contributing an answer to Stack Overflow! Is it enough to verify the hash to ensure file is virus free? How do planetarium apps and software calculate positions? To learn more, see our tips on writing great answers. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. I just noticed that when I have the [RequiredIf] attribute on my view model properties, the display name value isn't being used for labels. However, if I were to implement multiple RequiredIf attributes like this: [RequiredIf (nameof (FirstName), null)] [RequiredIf (nameof (StreetAddress), null)] [RequiredIf (nameof (City), null)] [RequiredIf (nameof (State), null)] [RequiredIf (nameof (ZipCode), null)] public string LastName { get; set; } How to put conditional Required Attribute into class property to work with WEB API? Is it possible for a gas fired boiler to consume more energy when heating intermitently versus having heating at all times? Where to find hikes accessible in November and reachable by public transport from Denver? In addition, override the IsValid method to return ValidationResult.Success if the CustomerType property value is User. Cannot Delete Files As sudo: Permission Denied. If you encounter the same, replace. It fires no matter what. Such data model properties (related to those fields) would have this attribute on them [RequiredIf ('IsCompany', true)] where IsCompany: bool is usually bound to a checkbox. Update: the issue was that in the RequiredIf attribute all values must be enclosed in commas, like: [RequiredIf(4, ",ACH,")] ad 2) For client-side validation to work, despite ExpressiveAnnotations.dll, mentioned MvcUnobtrusiveValidatorProvider.dll also needs to be there. I assume there is an issue in your code (maybe you have types ambiguity - are you sure that in your Global.asax you have registered adapters for attributes from appropriate namespace i.e. Stack Overflow for Teams is moving to its own domain! Teleportation without loss of consciousness. i need helpon RequiredIf conditional validation. data annotation c# required specif. Can plants use Light from Aurora Borealis to Photosynthesize? Answers. { RequiredIf Conditional Validation Attribute; RequiredIf Conditional Validation Attribute. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. JavaScriptSerializer - JSON serialization of enum as string. You can find the code sample here . Hope this helps. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. } When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. If you want to use the required attribute for only one input of the radio group, this snippet is for you.. Is there an industry-specific reason that many characters in martial arts anime announce the name of their attacks? I'm taking about the Original code from ". Data Annotations make a value Required when another model value is not empty? seems like an over site to the attribute system. Is it enough to verify the hash to ensure file is virus free? Movie about scientist trying to find evidence of soul. Can lead-acid batteries be stored by removing the liquid from them? I had the same problem yesterday, but I did it in a very clean way which works for both client side and server side validation. https://foolproof.codeplex.com/workitem/17245, Stop requiring only one assertion per unit test: Multiple assertions are fine, Going from engineer to entrepreneur takes more than just good code (Ep. Here is another code sample using custom ValidationAttribute . Of course I can make it required all the time in my ViewModel: [Required (ErrorMessage = "Required field"), Display (Name = "Upload File")] public IFormFile UploadFile { get; set; } public string FileName { get; set; } However, if @Model.FileName is not null, then UploadFile . c# required attribute validation; c# optional required attribute; c# class required property; require specific attribute data annotation; Required c# what is; required vs [required()] c#; ValidationAttribute required validation; validationattribute c# context; model validation required attributes c#; asp.net class property is white visual studiui\ Why is there a fake knife on the rack at the end of Knives Out (2019)? Like this: Expanding on the notes from Adel Mourad and Dan Hunex, I amended the code to provide an example that only accepts values that do not match the given value. Movie about scientist trying to find evidence of soul. Would a bicycle pump work underwater, with its air-input being above water? Name for phenomenon in which attempting to solve a problem locally can seemingly fail because they absorb the problem from elsewhere? I know the topic was asked some time ago, but recently I had faced similar issue and found yet another, but in my opinion a more complete solution. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. I added the following class to my Models folder: I didn't need to make any changes to my view, but did make a change to the properties of my model: The main difference from other solutions here is that this one reuses logic in RequiredAttribute on the server side, and uses required's validation method depends property on the client side: I think using IValidatableObject is a good choice. - Validation attribute which indicates that annotated field is required when computed result of given logical expression is true. For validations that has the form of: "Validate this field only when this other field has certain value", I have coded 3 attributes: RequiredIf, RangeIf and RegularExpressionIf that inherints from ValidationAttribute. Why are taxiway and runway centerline lights off center? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. I do not know what the problem was, but by the last try I have managed to work it "on server and client side". i have tried looking through all of the custom attributes information I can find and it seems nothing is coming up useful. Not the answer you're looking for? The attribute can still be used in ASP.NET Core MVC, but there is also a new one . Why doesn't this unzip all my files in a given directory? 2- warp the code inside a $(document).ready(function(){..}); 3- include our js file after including the JQuery validation libraries, So it look like this now : create this file in ~/content or in ~/scripts folder, create it some where in your project, For example in ~/models/customValidation/. Can lead-acid batteries be stored by removing the liquid from them? - Robert Koritnik Nov 18, 2016 at 8:59 5 validation attribute for required value. One of the most typical use cases of data annotations is to ensure that a value of a certain property has been provided by the caller of the API - and this, historically (in "classic" ASP.NET MVC), has been controlled by RequiredAttribute. Using it you are able to achieve the result you asked about in the following manner: More information about ExpressiveAnnotations library can be found here. To learn more, see our tips on writing great answers. Many, many thanks for this library. You can extend RequiredAttribute to check the property value and according to that manually check IsNullOrWhiteSpace of current property . Asking for help, clarification, or responding to other answers. Is there any alternative way to eliminate CO2 buildup than by breathing or even an alternative to cellular respiration that don't produce CO2? How can I use the RequiredIf attribute to make the DateData required if the value of Data is not 0. Is there a term for when you use grammar from one language in another? How to understand "round up" in this context? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Not the answer you're looking for? When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. How would i go about writing a validation attribute(s?) Why? The code looks like this: In this senario we do not get an error when email is unfilled but selected as the notification type. Here is another code sample using custom ValidationAttribute . How to understand "round up" in this context? I should have caught it on your comment. I.e. Here is the code Here PropertyName is the property on which you want to make your condition DesiredValue is the particular value of the PropertyName (property) for which your other property has to be validated for required Say you have the following At last but not the least , register adapter for . If for some reason it is not there - add reference manually. asp.net mvc make model property required based off other property value. if you do. The Required attribute indicates that a property must have a value; in this sample, a movie has to have values for the Title, ReleaseDate, Genre, and Price properties in order to be valid. get; DesiredValue is the particular value of the PropertyName (property) for which your other property has to be validated for required, At last but not the least, register adapter for your attribute so that it can do client side validation (I put it in global.asax, Application_Start), Some people have reported issues that the client side fires no matter what or it does not work. Thanks for contributing an answer to Stack Overflow! Find centralized, trusted content and collaborate around the technologies you use most. Will Nondetection prevent an Alarm spell from triggering? I have looked up stack overflow and I have used to following RequiredIf Validation attribute. @H.Johnson: This exception is unlikely to occur. You will see s has the value "NotificationMethods" not "Int32". How can you prove that a certain file was downloaded from a certain website? Is this homebrew Nystul's Magic Mask spell balanced? Did Great Valley Products demonstrate full motion video on an Amiga streaming from a SCSI hard disk in 1990? I got as far into your answer as "Given that your method NotificationMethodID is returning an int" before I realized my very rookie mistake, thank you. Thanks a lot for your nice example and help. c# class required property. Create Generic method constraining T to an Enum, How to get an enum value from a string value in Java. In ASP.NET MVC, had used with ExpressiveAnnotation package but its not working for .NET Core. @Simant You many switch the required validation on/off manually using C# and JS. requiredif IsMonitized =="Yes" Range . I was looking for some advice on the best way to go about implementing a validation attribute that does the following. This topic illustrates how to extend ValidationAttribute to enforce customized validation of checking a field's value is provided or not depending on other field value. Is this meat that I was told was brisket in Barcelona the same as U.S. brisket? Why was video, audio and picture compression the poorest when storage space was the costliest? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. So just do something like this using ExpressiveAnnotations.Attributes; [RequiredIf ("Data != 0")] public DateTime? Follow. RequiredAttribute Class (System.ComponentModel.DataAnnotations) Specifies that a data field value is required. Did Great Valley Products demonstrate full motion video on an Amiga streaming from a SCSI hard disk in 1990? The Range attribute constrains a value to within a specified range. Stack Overflow for Teams is moving to its own domain! However, if I were to implement multiple RequiredIf attributes like this: It will enforce LastName property to have a value regardless. What do you call an episode that is not closely related to the main plot? public class RequiredIfAttribute : ValidationAttribute, IClientValidatable { private String PropertyName { get; set; } private Object DesiredValue { get; set . By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. What is the rationale of climate activists pouring soup on Van Gogh paintings of sunflowers? and using `@Html.TextBoxFor(m => m.Data)` I am adding it in the view. Get property value from string using reflection, Custom Validation Attribute is not called ASP.NET MVC, Get value of a property that was passed in as a string, Populating EXT JS Store in a EXT form Panel, Retrieving the value of a condition within a custom conditional ValidationAttribute, How to configure swashbuckle correct for polymorphism. ExpressiveAnnotations.Attributes, and not any other ones?). Why don't American traffic signs use pictograms as much as other countries? RequiredIf. @JaroslawWaliszko: Thanks for your kind help. My profession is written "Unemployed" on my passport. Handling unprepared students as a Teaching Assistant. Why bad motor mounts cause the car to shake and vibrate at idle but not when you give it gas and increase the rpms? Share. Comparing Java enum members: == or equals()? RegularExpressionAttribute Class (System.ComponentModel.DataAnnotations) Specifies that a data field value in ASP.NET Dynamic Data must match the specified regular expression. Scenario: Address.City is required when Address.Country's value is "USA". Here is the code: PropertyName is the property on which you want to make your condition Thanks for contributing an answer to Stack Overflow! Validating Enum Values within C# MVC. rev2022.11.7.43014. Any way to resolve this? C#. Making statements based on opinion; back them up with references or personal experience. Did find rhyme with joined in the 18th century? Connect and share knowledge within a single location that is structured and easy to search. We also created an enum to avoid using a lookup table id in the ViewModel. ErrorMessage, ValidationType = validationType}; rule. https://github.com/JaroslawWaliszko/ExpressiveAnnotations, This is Small .NET and JavaScript library which provides annotation-based conditional validation mechanisms. For this case you don't need to register adapter, And finally the javascript ( bundle it and renderitput it in its own script file), You need obviously the unobstrusive validate jQuery to be included as requirement. Does subclassing int to forbid negative integers break Liskov Substitution Principle? You can extend RequiredAttribute to check the property value and according to that manually check IsNullOrWhiteSpace of current property .