0 answers

114 views

Is there a way to control row height and column width using ExportToXlsx on RadGridView?

I am using RadGridView's ExportToXlsx. I have been able to provide some styling (background colors and cell borders) in the ElementExportingToDocument event. But I don't see a way to increase the row height and column width. Is there a way to do this?

GridView

asked on 04 May 2022

1 answer

87 views

Persisting foldername property value in models

I have a property called FolderName which is bound in storage view.xaml. I set this value with folder dialog. However if I call that value from within storage view or another view.cs its always defaulted. How do I persist the values across the running app. In code base I had to hardcover value.

https://github.com/CrownParkComputing/MegaDownloaderFinal

FileDialogs

answered on 03 May 2022

1 answer

117 views

SyntaxEditor show OverloadListWindow above cursor

Still working on my DAX custom language editor. Color tagging and Intelliprompts are working, have moved on to overloads. By default, the overloads seem to display below the cursor which conflicts with the intelliprompts (overlaps). Can I move the overloads to display above the cursor instead and how?

SyntaxEditor

answered on 02 May 2022

0 answers

108 views

GridView programmatically grouped performance

Hi
I need to represent a list of columns whose number is multiplied for the cardinality of a list of other elements.
For istance I have a list of "Sources": [S1, S2], and for every sources I have a fixed number of values [V1, V2, V3].
The columns table wil be:
S1 | S2

V1 | V2 |V3 | V1 | V2 V3

I achieved that with the following code:

		private void SetTableColumns(ObservableCollection<StatisticaTableViewPerClasse> elementi
			, IEnumerable<string> sorgentiNames
			, string columnClassHeader)
		{
			GridAnalisiStatisticaTable.Columns.Clear();
			GridAnalisiStatisticaTable.ColumnGroups.Clear();
			if (elementi.Count() > 0)
			{
				//var sorgenti = elementi.GroupBy(e => e.Sorgente.Id,
				//				e => e.Sorgente.Name,
				//				(id, name) => name).Select(s => s.FirstOrDefault());
				foreach (var sorgenteName in sorgentiNames)
				{
					var groupName = GROUPNAME + sorgenteName;
					var group = new GridViewColumnGroup()
					{
						Header = sorgenteName,
						Name = groupName,
						
					};
					GridAnalisiStatisticaTable.ColumnGroups.Add(group); 
					//GridAnalisiStatisticaTable.Columns.Add(new GridViewDataColumn()
					//{
					//	Header = Utility.LoadString(ResourcesKeys.SorgenteColumnHeader),
					//	DataMemberBinding = new Binding("Sorgente.Name"),
					//	ColumnGroupName = groupName
					//});
					GridAnalisiStatisticaTable.Columns.Add(new GridViewDataColumn()
					{
						Header = columnClassHeader,
						DataMemberBinding = new Binding("ClasseHeader"),
						ColumnGroupName = groupName
					});
					GridAnalisiStatisticaTable.Columns.Add(new GridViewDataColumn()
					{
						Header = Utility.LoadString(ResourcesKeys.DistribuzioneProbabilitàHeader),
						DataMemberBinding = new Binding($"Values[{sorgenteName}].DistribuzioneValue")
						{
							StringFormat = "N2"
						},
						ColumnGroupName = groupName
					});
					GridAnalisiStatisticaTable.Columns.Add(new GridViewDataColumn()
					{
						Header = Utility.LoadString(ResourcesKeys.ProbabilitàCumulativaHeader),
						DataMemberBinding = new Binding($"Values[{sorgenteName}].CumulativaValue")
						{
							StringFormat = "N2"
						},
						ColumnGroupName = groupName
					});
				}
			}
		}

Where the GridView is defined as:

<t:RadGridView x:Name="GridAnalisiStatisticaTable" Grid.Row="1"
					   RowIndicatorVisibility="Collapsed"
					   AutoGenerateColumns="False"
						GroupRenderMode="Flat"
					   ShowGroupPanel="False"
						IsPropertyChangedAggregationEnabled="False"
					   ItemsSource="{Binding Statistiche}"/>

And the listed class is:

public class StatisticaTableView
	{
		public StatisticaTableView(KeyValuePair<decimal, double> entry, StatisticType type)
		{
			switch (type)
			{
				case StatisticType.DistribuzioneProbabilità:
					DistribuzioneValue = entry.Value;
					break;
				case StatisticType.ProbabilitàCumulativa:
					CumulativaValue = entry.Value;
					break;
				case StatisticType.LivelliPercentili:
					break;
				case StatisticType.DistribuzioneTemporale:
					break;
				default:
					break;
			}
		}
		public double DistribuzioneValue { get; set; }
		public double CumulativaValue { get; set; }
	}
	public class StatisticaTableViewPerClasse
	{
		public StatisticaTableViewPerClasse(KeyValuePair<decimal, double> entry, decimal classRange, StatisticType type, string sorgenteName)
		{
			Classe = entry.Key;
			ClasseHeader = $"{entry.Key} - {entry.Key + classRange}";
			Values.Add(sorgenteName, new(entry, type));
		}
		public decimal Classe { get; set; }
		public string ClasseHeader { get; set; }
		public Dictionary<string, StatisticaTableView> Values { get; set; } = new();
	}

But the resulting grid (formally correct) has very poor performance, when I scroll the rows, though the rows number is only 30.

I think that the problem comes from the binding with index (DataMemberBinding = new Binding($"Values[{sorgenteName}].DistribuzioneValue")), is there a way to achieve the same result with better performance?
Thank you
Luigi

GridView

asked on 02 May 2022

1 answer

146 views

RadDocking is not wokring which is inside RadNavigationView

Hi,

I am using RadNavigationViewControl with RadDocking inside in the mainWindow, main view.

like this:

<RadNavigationView.Content>

<RadDocking.DocumentHost>

</RadDocking.DocumentHost>

</RadDocking>

</RadNavigationView.Content>

</RadNavigationView>

When I open the new menu, new RadPane is Created inside RadPaneGroup, and I want it to be isFloatable and isDockable.

But the problem is that when I unload radpane, the radpane unloaded is not "Dockable" to any of control.

When I remove RadNavigationView and put RadDocking independently, RadDocking itself and contents inside work fine.

Is there a way to implement RadDocking inside RadNavigationView Content?

Docking

NavigationView (Hamburger Menu)

answered on 02 May 2022

1 answer

96 views

Diagrams Modified template of the SettingsPaneView

Hi Telerik Team,

I looked at the example below and tried the same,

but it came out like the attached picture

https://docs.telerik.com/devtools/wpf/controls/raddiagram/extensions/settingspane/settingspaneview_properties

I want know if it is possible to change the width of SettingsPaneView.

regards,

Diagram

answered on 28 Apr 2022

0 answers

647 views

The scroll bars are placed in the tables

PROBLEM

When you have a WPF RadGridView based on Table of many columns, consequently the Horizontal Scrollbar appear in Last row's as shown below. As the user scrolls to the bottom, it is look like the last row is not fully visible, its content has been cut.

Note : Theme Setting Mechanisms

Using Implicit Styles In this case use NoXaml dlls.

QUESTION : How can show Horizontal scrollbar correctly like :

CAUSE & SOLUTION plz?

GridView

Styling

updated question on 27 Apr 2022

0 answers

172 views

Binding to Label in user control for DialogBox example not working.

Codebase available here : https://github.com/CrownParkComputing/MegaDownloaderFinal

so using the FolderDialog example for wpf, The binding for the propertt FolderName does not update after selecting a new folder. The original assignment works fine?

Errors shown :

FolderName property not found on object of type String.

IsSearchActive property not found on object of type OpenFolderDialogViewModel.

ItemTemplate and ItemTemplateSelector are ignored for items already of the ItemsControl's container type RadWatermarkTextBox

Please help with these issues I am stumped.

FilePathPicker

asked on 26 Apr 2022

1 answer

136 views

RadTreeListView in UserControl Access SelectedItems collection

Is there a quicker way of selecting / deselecting groups of children items in RadTreeListView ??

if (e.AddedItems.Count > 0)
            {
                foreach (NodesModel i in e.AddedItems)
                {
                    if (i.Name != "WHDLoad")
                    {
                        if (i.Items.Count > 0)
                        {
                            foreach (NodesModel x in i.Items)
                            {
                                {
                                    //x.IsSelected = true;
                                    Nodes.SelectedItems.Add(x);
                                }
                            }
                        }
                    }
                }
            }

TreeListView

answered on 26 Apr 2022

1 answer

177 views

Custom Column Binding Confusion

Hi Telerik Team,

I create some custom columns and observed some strange behavior. Many columns use the same custom column with different values (bindings) but sometimes show the same values, especially when scrolling. So I use the CustomColumn example to investigate further.

I can reproduce this 100%. Column2 switches to the binding from Column1. I attached a sample project + video.

I can "solve" this problem by setting the Binding every time the CreateCellElement method is called. BUT this happends every time a value changed and it is used for a stock exchange software, were values changing a lot so I believe it can be a performance issue.

if (bar == null)
{
    bar = new RadProgressBar();
    bar.Height = 20;
    cell.Content = bar;
}

bar.SetBinding(RadProgressBar.ValueProperty, this.DataMemberBinding);

Is this a bug? Do I understand this wrong? Why is the cell "created" on every value change?

PS: the real grid has about 100 columns and the CustomColumns had multiple Bindings also to DependencyProperties wich had to be constructed every time.

regards,
marco

GridView

answered on 26 Apr 2022