Propertygrid Error

Viewing 2 posts - 1 through 2 (of 2 total) Author Posts drgrumpyParticipant June 29, 2016 at 7:36 pm Post count: 1 #43887 | How do I set up the PropertyGrid to display an error condition (like the WinForms ErrorProvider or a red highlight) when data is invalid? I currently have my model class implementing INotifyDataErrorInfo and it's ValidateProperty method is triggered when the value is changed through the PropertyGrid. I then use the Validator class to check if the value is valid (in this case, not empty) and I set my errors. How do I get the PropertyGrid to respond to the invalid value? Is there a binding that I need to add? Do I need to use some other validation scheme entirely? Fawzi [Xceed]Moderator June 30, 2016 at 3:51 pm Post count: 618 #43889 Hi, Nothing special to do. We don't have your code, so we build up a sample. When the PropertyItem is modified in the PropertyGrid, the model class property will be updated, its validate method called (checking for empty string) and when an error is added, the PropertyGrid will show a red rectangle around the PropertyItem (along with a Tooltip when the mouse is over the PropertyItem name). Here's the sample : public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); this.DataContext = new MyData(); } } public class MyData : INotifyPropertyChanged, INotifyDataErrorInfo { private const string ErrorString = "Property Name should not be null"; private Dictionary> _fieldNameToErrors = new Dictionary>(); #region Name Property public string Name { get { return _name; } set { if( _name != value ) { _name = value; this.IsNameValid( value ); this.RaisePropertyChanged( "Name" ); } } } private string _name; private void IsNameValid( string name ) { if( string.IsNullOrEmpty( name ) ) { this.AddError( "Name", MyData.ErrorString, true ); } else { this.RemoveError( "Name", MyData.ErrorString ); } } #endregion #region INotifyPropertyChanged Members public event PropertyChangedEventHandler PropertyChanged; private void RaisePropertyChanged( string propertyName ) { if( propert

here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Throw exception to PropertyGrid up vote 0 down vote favorite I have a Winforms PropertyGrid. https://xceed.com/forums/topic/propertygrid-validation/ When trying to set value in a variable. I want to throw an error to PropertyGrid as error that appears after putting an invalid value. There is a way to do this? c# winforms exception propertygrid share|improve this question edited May 23 '13 at 9:55 David 7,168112851 asked May 23 '13 at 9:51 Hodaya Shalom 1,44153175 add a comment| 1 Answer 1 active oldest votes up vote 2 down vote http://stackoverflow.com/questions/16710745/throw-exception-to-propertygrid accepted You simply throw an exception in the set: private int someProperty; public int SomeProperty { get { return someProperty; } set { if((value % 3) != 0) throw new ArgumentOutOfRangeException( "the value must be divisible by 3"); someProperty = value; } } Produces: share|improve this answer answered May 23 '13 at 10:01 Marc Gravell♦ 631k14717602232 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service. Not the answer you're looking for? Browse other questions tagged c# winforms exception propertygrid or ask your own question. asked 3 years ago viewed 370 times active 3 years ago Related 1274Catch multiple exceptions at once?24How to create custom PropertyGrid editor item which opens a form?15PropertyGrid - Custom property names?800Manually raising (throwing) an exception in Python7PropertyGrid alternatives1PropertyGrid mult. controls select, null exception on property set?2UITypeEditor in PropertyGrid with multiselection2DefaultValueAttribute for PropertyGrid throws exception1Avoid exceptions from PropertyGrid0Implementing TypeConverter for handling PropertyGrid exceptions Hot Network Questions Are illegal immigrants more likely to commit crimes? What does the skull represent next

Downloads Store Buy online Purchase order Volume discounts Reseller Software license Contact sales Blog Support About About Us Contact Testimonials rss twitter facebook Support forums\WPF Elements \Looking for a way to display e... http://www.mindscapehq.com/forums/thread/1553 Looking for a way to display error severity in the property grid Boy does time fly! This thread looks to be a little on the old side and therefore may no longer be https://www.devexpress.com/Support/Center/Question/Details/T398008 relevant. Please see if there is a newer thread on the subject and ensure you're using the most recent build of any software if your question regards a particular product. Otherwise - post propertygrid error away! Craig 27 posts We're using the v2 property grid with objects that implement IDataErrorInfo. One limitation we're hitting is that we want different visuals for errors of different severity (we have our own validation mechanism that is accessed via IDataErrorInfo). For example, an error could have the default red border in the property grid. A warningor lower priority error, on the other hand, might propertygrid error have a yellow border. Does the property grid have a built in mechanism to support different error severities? I realize that IDataErrorInfo may be too limiting; is there a different supported interface that would allow severity to be automatically displayed in the grid? Thanks, -Craig Posted on Dec 30 2008 Post reply ivan 5,431 posts There is no standard mechanism for this in the grid because there is no standard mechanism for error severity in the .NET rich client data binding infrastructure (as far as we know).One possibility is to create custom validation rules which in turn return custom validation results -- extending the ValidationResult type to include a severity level. There are however two issues with this:1. You would need to recreate the built-in editors in order to re-specify the data bindings and invoke your custom validation rules. This is a bit tedious and creates potential maintenance issues.2. The binding is not to the "real" object, but to a proxy object of type ObjectWrapper. So, for example, you cannot query for a custom interface, because ObjectWrapper will not implement that interface. If your validation mechanism tunnels over IDataErrorInfo, e.g. by returning an XML

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