Hello, support team.

I have an application with a PropertyGrid in C# with WinForms. In this PropertyGrid I need to display a drop-down list with a predefined value list, but I need to allow also the user be able to edit a not listed value.

Thank you in advance

Thanks

For Each dColor As Double In {0, 0.25, 0.5, 0.75, 1}.Reverse()
        Dim oLegendItem As New MapLegendItemElement("", Color.White)

        oLegendItem.EnableBorderHighlight = False
        oLegendItem.BorderWidth = 0 ' Remove black outline?
        oLegendItem.Margin = New Padding(0)
        oLegendItem.Padding = New Padding(0)
        oLegendItem.MinSize = New Size(20, 10)
        oLegendItem.HorizontalLineWidth = 0
        oLegendItem.BorderBottomColor = Color.White
        oLegendItem.BorderTopColor = Color.White
        oLegendItem.BorderTopWidth = 0
        oLegendItem.BorderBottomWidth = 0
        oLegendItem.DrawBorder = False

        oLegendItem.BackColor = Color.White
        oLegendItem.BackColor2 = Color.White
        oLegendItem.BackColor3 = Color.White
        oLegendItem.BackColor4 = Color.White
        oLegendItem.BorderBottomShadowColor = Color.White
        oLegendItem.BorderColor = Color.White
        oLegendItem.BorderColor2 = Color.White
        oLegendItem.BorderColor3 = Color.White
        oLegendItem.BorderColor4 = Color.White
        oLegendItem.BorderInnerColor = Color.White
        oLegendItem.BorderInnerColor2 = Color.White
        oLegendItem.BorderInnerColor3 = Color.White
        oLegendItem.BorderInnerColor4 = Color.White
        oLegendItem.ShadowColor = Color.White
        oLegendItem.BorderInnerColor4 = Color.White

        oLegendItem.BorderThickness = New Padding(10)
        oLegendItem.BorderHighlightThickness = 0
        oLegendItem.DrawFill = False

        .ItemStackElement.Children.Add(oLegendItem)
    Next


    With .ItemStackElement
        .BackColor = Color.White
        .BackColor2 = Color.White
        .BackColor3 = Color.White
        .BackColor4 = Color.White
        .BorderBottomShadowColor = Color.White
        .BorderColor = Color.White
        .BorderColor2 = Color.White
        .BorderColor3 = Color.White
        .BorderColor4 = Color.White
        .BorderInnerColor = Color.White
        .BorderInnerColor2 = Color.White
        .BorderInnerColor3 = Color.White
        .BorderInnerColor4 = Color.White
        .ShadowColor = Color.White
        .BorderInnerColor4 = Color.White


        .ElementSpacing = 0  ' Remove spacing
        .EnableElementShadow = False

        .DrawBorder = False
        .EnableFocusBorder = False
        .BorderColor = Color.White
        .BorderBottomColor = Color.White
        .BorderWidth = 0
        .EnableBorderHighlight = False
        .DrawBorder = False
        .BorderBottomWidth = 0
        .BorderBottomWidth = 0
        .BorderThickness = New Padding(0)
        .BorderHighlightThickness = 0
    End With
End With

Hi,

in VirtualGrid, is there a way to set the default filter descriptor (different from "contains")?

Something like you suggest for the Grid control (https://www.telerik.com/forums/how-to-set-default-of-filterdescriptor-operator).

Thank you,

Emanuele

Was this removed in the most recent Winforms update?

I can't find it in the documentation nor the tool box in Visual Studio

I have a self-referencing Hierarchy working fine in .NET Framework 4.8,
now I upgraded to .NET 8 with

UI.for.WinForms.AllControls.Net60   2022.2.808-hotfix

public partial class Form1 : Form
{
    private Person[] _people = {
        new Person() { ID=1, Parent =0, Name = "Hans"},
        new Person() { ID=2, Parent =1, Name = "Fred"},
        new Person() { ID=3, Parent =1, Name = "Mary"},
        new Person() { ID=4, Parent =0, Name = "John"}
    };


    public Form1()
    {
        InitializeComponent();

        radGridView1.Relations.AddSelfReference(radGridView1.MasterTemplate, nameof(Person.ID), nameof(Person.Parent));
        radGridView1.DataSource = _people;
    }
}


public class Person
{
    public int ID { get; set; }
    public int Parent { get; set; }
    public string Name { get; set; }
}

as following picture shows, I have a hierarchical "Grid View", when the amount of data is too large, I can not see the horizontal scrollbar of “Event”

private void OnCellFormatting(object sender, Telerik.WinControls.UI.CellFormattingEventArgs e)
{
    if (/*some-condition-that-are-always-true-for-all-cells-in-specific-column*/true)
    {
        e.CellElement.Children.Clear();
        e.CellElement.Children.Add(new RadButtonElement { Text = e.CellElement.Value?.ToString() });
    }
}

1. Are there any performance drawbacks of mine implementation (i.e., related to the fact that the cell formatting event could be fired very often) ?
2. Is there a way to dynamically change grid column types. For example, after data binding, a column becomes a GridViewDataColumn but after clicking a button somewhere in a form it changes to GridViewCommandColumn?

When the GanttView opens, the ratio of the text (left) side to the graphical (right) side is 50/50.

This looks strange, as there may be either lots of space to the right of the right-most column of text, or not enough space if you have lots of columns.

There may be a better way to do this, but to make the left hand (text) columns have the correct with, and stay correct, add this:

  Private Sub resetSplitter()
      Dim allColWidths = 0
      For Each c As GanttViewTextViewColumn In myGanttView.GanttViewElement.Columns
          allColWidths = allColWidths + c.Width
      Next

      If allColWidths <> 0 Then 'might still be initializing
          allColWidths += 5 'removes the horizontal scroll bar from the text part - makes the left hand side look a bit neater
          myGanttView.Ratio = allColWidths / myGanttView.Width
      End If


  End Sub

You can then call this from:

1 - the Load event, so it looks nice at the start and

2 - from the resize, so it stays looking nice:

Hello!

I was trying to use Sorting/Filtering/Grouping while using VirtualMode by using the default properties and methods and wasn't able to. I found this that said "In the future editions of RadGridView, we have planned to implement virtual grouping operations with a simpler and more useful API." in the year 2009. Have there been any changes? Can i use the functionalities that i want while using VirtualMode without having to override and subscribe several events to workaround this problem?

JP