[Solved] Custom Validate for RadPropertyGrid

[Huong]

Regarding your demo http://demos.telerik.com/silverlight/#PropertyGrid/Virtualization

I want to know how can I validate property in RadPropertyGrid?

EX:
- Property 1 is required
- Property 2 max string length 50
...

Regards,

[Dimitrina]

Hello,

You can check our online documentation on validation here and here.
 

Regards,
Didie
Telerik

[Huong]

I mean that I use dynamic object, the property name will be set at run time. So I cannot use anotation attribute like your link suggestion.
Ex:

dynamic myDataRow = new MyDataRow();
for (int i = 0; i < 1000; i++)
{
    myDataRow[string.Format("Property {0}", i)] = string.Format("Value {0}", i);
}

this.propertyGrid1.Item = myDataRow;

MyDataRow source code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Dynamic;
using System.ComponentModel;

namespace Telerik.Windows.Examples.PropertyGrid.Virtualization
{
    public class MyDataRow : DynamicObject, INotifyPropertyChanged
    {
        readonly IDictionary<string, object> data;

        public MyDataRow()
        {
            this.data = new Dictionary<string, object>();
        }

        public MyDataRow(IDictionary<string, object> source)
        {
            this.data = source;
        }

        public override IEnumerable<string> GetDynamicMemberNames()
        {
            return this.data.Keys;
        }

        public override bool TryGetMember(GetMemberBinder binder, out object result)
        {
            result = this[binder.Name];

            return true;
        }

        public override bool TrySetMember(SetMemberBinder binder, object value)
        {
            this[binder.Name] = value;

            return true;
        }

        public object this[string columnName]
        {
            get
            {
                if (this.data.ContainsKey(columnName))
                {
                    return this.data[columnName];
                }

                return null;
            }
            set
            {
                if (!this.data.ContainsKey(columnName))
                {
                    this.data.Add(columnName, value);

                    this.OnPropertyChanged(columnName);
                }
                else
                {
                    if (this.data[columnName] != value)
                    {
                        this.data[columnName] = value;

                        this.OnPropertyChanged(columnName);
                    }
                }
            }
        }

        private void OnPropertyChanged(string propertyName)
        {
            if (this.PropertyChanged != null)
            {
                this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;
    }
}

And now I want validate each property on MyDataRow. I know I can use RadAlert, but it's not consistency with another form. I want the error message on RadPropertyGrid must be like this:
http://www.telerik.com/help/silverlight/media/RadDataForm_Validation3.png

Regards,
Huong Nguyen

[Dimitrina]

Hi,

Such a validation is currently not supported.We will research this feature in the close future.
 

Regards,
Didie
Telerik

[Chris]

I have the same question. Is there a way to perform validation when using a dynamic object as the item source? The last post was from 2013. Has anything changed on this issue?

[Yoan]

Hello,

Currently, the supported methods for validation with RadPropertyGrid are described in the Validation Support help article.

Regards,
Yoan
Telerik