Hello,

I have been examining the Telerik source code and notice several anti-patterns related to automation peers. For several controls, the automation peers have function overrides that return unhelpful strings. One example is the RadGridViewAutomationPeer GetHelpTextCore method returns "RadGridView". Because of this, it's impossible to set help text for individual grids in XAML which is the default behavior of the GridViewDataControlAutomationPeer. Even though the RadGridViewAutomationPeer can be inherited from and its GetHelpTextCore method modified, not all Telerik automation peers are overridable. GridViewCell and GridViewRow for example require internally scoped properties and can't be overridden.

Right now I am able to bypass these issues by making the changes to the source code and recompiling it, but this is not a long term sustainable solution. Does Telerik have any sort of road map available for addressing automation peer issues?

Hi,

I was trying to add a qr into a RadFixedDocument like this

 

I have the following error on this line: Telerik.Windows.Media.Imaging.ExportExtensions.ExportToImage(qr, stream, new PngBitmapEncoder());

Hello

I use the GridView and I want to know how to select no cell when SelectionUnit = "FullRow" is set. Currently the row is selected, but also the clicked cell (is shown as selected). I'm using the Material-Theme and Version 19.1.220.

Thanks.

Hi, I created a Validation Class and I using with a RadComboBox that is populated by MySQL but the validation doesn't work. When I populate by RadComboBoxItem it's work.

Validation.cs:

namespace Drex.Classes
{
    public class Validations : ViewModelBase, IDataErrorInfo
    {
        private string _NumeroProcesso;
        private DateTime? _Data;
        private Double? _AreaTerreno;
        private string _Parametro;
        private string _Interessado;
        private string _Endereco;
        private string _AutorProjeto;
        private string _ARTAutorProjeto;
        private string _ResponsavelExecucao;
        private string _ARTResponsavelExecucao;
        private string _ResponsavelAnalise;

        public string NumeroProcesso
        {
            get { return _NumeroProcesso; }
            set { _NumeroProcesso = value; this.OnPropertyChanged("NumeroProcesso"); }
        }

        public DateTime? Data
        {
            get { return _Data; }
            set { _Data = value; this.OnPropertyChanged("Data"); }
        }

        public Double? AreaTerreno
        {
            get { return _AreaTerreno; }
            set { _AreaTerreno = value; this.OnPropertyChanged("AreaTerreno"); }
        }

        public string Parametro
        {
            get { return _Parametro; }
            set { _Parametro = value; this.OnPropertyChanged("Parametro"); }
        }

        public string Interessado
        {
            get { return _Interessado; }
            set { _Interessado = value; this.OnPropertyChanged("Interessado"); }
        }

        public string Endereco
        {
            get { return _Endereco; }
            set { _Endereco = value; this.OnPropertyChanged("Endereco"); }
        }

        public string AutorProjeto
        {
            get { return _AutorProjeto; }
            set { _AutorProjeto = value; this.OnPropertyChanged("AutorProjeto"); }
        }

        public string ARTAutorProjeto
        {
            get { return _ARTAutorProjeto; }
            set { _ARTAutorProjeto = value; this.OnPropertyChanged("ARTAutorProjeto"); }
        }

        public string ResponsavelExecucao
        {
            get { return _ResponsavelExecucao; }
            set { _ResponsavelExecucao = value; this.OnPropertyChanged("ResponsavelExecucao"); }
        }

        public string ARTResponsavelExecucao
        {
            get { return _ARTResponsavelExecucao; }
            set { _ARTResponsavelExecucao = value; this.OnPropertyChanged("ARTResponsavelExecucao"); }
        }

        public string ResponsavelAnalise
        {
            get { return _ResponsavelAnalise; }
            set { _ResponsavelAnalise = value; this.OnPropertyChanged("ResponsavelAnalise"); }
        }


        public Validations(Processo_Type items, bool _selected)
        {
            if (_selected)
            {
                NumeroProcesso = items.Numero;
                Data = items.Data;
                AreaTerreno = 10.2;
                Parametro = "";
                Interessado = items.Interessado;
                Endereco = items.Endereco;
                AutorProjeto = items.AutorProjeto;
                ARTAutorProjeto = items.ARTAutorProjeto;
                ResponsavelExecucao = items.ResponsavelExecucao;
                ARTResponsavelExecucao = items.ARTResponsavelExecucao;
                ResponsavelAnalise = items.ResponsavelAnalise;
            }
            else
            {
                NumeroProcesso = null;
                Data = null;
                AreaTerreno = 0.0;
                Parametro = null;
                Interessado = null;
                Endereco = null;
                AutorProjeto = null;
                ARTAutorProjeto = null;
                ResponsavelExecucao = null;
                ARTResponsavelExecucao = null;
                ResponsavelAnalise = null;
            }
        }

        public string this[string columnName]
        {
            get
            {
                Debug.WriteLine(columnName);
                if ("NumeroProcesso" == columnName)
                {
                    if (String.IsNullOrEmpty(NumeroProcesso))
                    {
                        return "Favor informar o número do processo";
                    }
                }

                if ("Data" == columnName)
                {
                    if (!_Data.HasValue)
                    {
                        return "Favor informar a data do processo";
                    }
                }

                if ("AreaTerreno" == columnName)
                {
                    if ((AreaTerreno == 0.0) || (!AreaTerreno.HasValue))
                    {
                        return "Favor informar o total da área do terreno";
                    }
                }

                if ("Parametro" == columnName)
                {
                    if (String.IsNullOrEmpty(Parametro))
                    {
                        return "Favor informar um parâmetro";
                    }
                }

                if ("Interessado" == columnName)
                {
                    if (String.IsNullOrEmpty(Interessado))
                    {
                        return "Favor informar o nome do interessado";
                    }
                }

                if ("Endereco" == columnName)
                {
                    if (String.IsNullOrEmpty(Endereco))
                    {
                        return "Favor informar o endereço do projeto";
                    }
                }

                if ("AutorProjeto" == columnName)
                {
                    if (String.IsNullOrEmpty(AutorProjeto))
                    {
                        return "Favor informar o nome do autor do projeto";
                    }
                }

                if ("ARTAutorProjeto" == columnName)
                {
                    if (String.IsNullOrEmpty(ARTAutorProjeto))
                    {
                        return "Favor informar a ART do autor do projeto";
                    }
                }

                if ("ResponsavelAnalise" == columnName)
                {
                    if (String.IsNullOrEmpty(ResponsavelAnalise))
                    {
                        return "Favor informar o nome do responsável pela análise";
                    }
                }

                return "";
            }
        }

        public string Error
        {
            get { throw new NotImplementedException(); }
        }
    }

}

 

 

.xaml:

                <telerik:RadComboBox Text="{Binding Parametro, Mode=TwoWay, ValidatesOnDataErrors=True, NotifyOnValidationError=True, ValidatesOnExceptions=True}"
                                     x:Name="Parametro"
                                     VerticalAlignment="Center"
                                     HorizontalAlignment="Stretch" 
                                     HorizontalContentAlignment="Left"
                                     EmptyText="[selecione um parâmetro]" 
                                     IsEditable="True" 
                                     IsReadOnly="True"
                                     DataContext="{StaticResource Parametro_Call}" 
                                     ItemsSource="{Binding Parametros}"
                                     DisplayMemberPath="Parametro" 
                                     SelectedValuePath="IDParametro"/>

 

 

 

I use RadCartesianChart3d to display a surface map with a lot of points.  Hundreds of thousands.  And it displays well but as you might imagine, it takes a long time for me to generate all of those points.   So I had an idea (what turned out to be a bad idea) that I would make things more efficient by changing my pixel type -- my class to which the chart binds --  from a class into a struct.  

Obviously, that failed.  The RadCartesianChart3D threw an exception with the text "Dynamic getter is not supported for value types.".  

And I get this.  Makes sense given how the chart works.  But it leads me to wonder:  Is there an alternative approach in Telerik world that would give me the efficiency I'm looking for?

It just seems that if there were some simpler version of the chart that could work with some a stock struct type with X,Y,Z double values, it would have to be a lot faster.  Not forcing the GC to track 200,000 garbage-collectible references seems like it would have to be a boost, no?

So is there such an alternative?  And if not, is this something that might even be on Telerik's radar for the future?

Or is my thinking wrong here and would such a chart *not* give m the performance improvement I expect (and if so, why not?)

Thanks,

I have a worksheet with a lot of protected cells that cannot be edited. I want the cells to be protected but I don't need a warning to popup everytime the user tries to edit a protected cell. I would prefer to not have any warning display and just have the action silently fail.

Is there anyway to suppress the error dialog when the user tries to modify one of these protected cells?

Hi,

I use the Radmap Control for Displaying Floorplans which has no Coordinates.The floorplans are available in Maptiles so I implemented a custom map provider.

https://docs.telerik.com/devtools/wpf/controls/radmap/how-to/howto-custom-provider

The plan will now be displayed but it will be repeated infinitly. How can I prevent that?

best regards

Hello,

we are using the RadTileView-Control in our project.

After upgrade to Telerik Version 2019.1.220, an exception is thrown at each startup.

System.Windows.Markup.XamlParseException: Must create DependencySource on same Thread as the DependencyObject

We are using implicit styles (NoXaml version) with an active fluent style. Other styles (Crystal, etc.) seem not to be affected.

Please help!

regards,

Tobias

How can I configure the RowDetails to open only when I click on the plus symbol and not on the whole row ?

Hi!

When creating a Rad Diagram shapes (Rectangle, Circle etc..) with "No fill" [only outline] Is it possible to make it selectable only by the outline, rather than selecting it inside the shape? [Same Behaviour as Microsoft PPT].

~ We Can add the Cursor behavior for the entire rad diagram but not for the outline/inside the shape.

I've added a screenshot demonstrating the behavior.


Thanks!