I've got a radgridview consisting of approximately 280 rows and 100 columns (some non-visible), made by autogenerating columns based on a dynamic temp-table in the datasource. After opening the query I'm setting for approximately 15 rows the Ispinned property to true:

radGridView...:Rows[i]:PinPosition = Telerik.WinControls.UI.PinnedRowPosition:TOP.

Based on the information the profiler provides, this takes around 7 seconds per call. This is way to slow since the program has to recreate the dynamictemp-table and associated information by querying the database each 30s.

The pinning of the rows is already encapsulated by a beginupdate on the grid table element.  Setting certain properties to false of the grid didn't result in a speed up.

What did make the pinning of the rows faster was when the query had less rows.

How could this be faster? Is it possible to pin the rows while the query is retrieving its results or before instead of after?

Will Radmap be supporting Azure maps since Bing maps are no longer supported?

I have a Winform that includes a Grid that my Users can edit by adding/removing columns.

I have an Object ("gridProps" class) that holds all of the "grid" properties,

gridProps.Columns property replaces the default (text) editor with my own popup radForm that works very much like your own "Columns" property for radGrid.  When the user clicks into that Property on the PropertyGrid, you get a string representation and a "..." button.  Clicking on that button bring up my "Columns Editor" radForm and takes over until "OK" or "Cancel"

Everything works...except: The user can click into "Columns" on the PropertyGrid and it automatically opens the "Textbox" editor inside the PropertyGrid and the user can type away.  Nothing happens with this input - my TypeConverter sees to that but they are still allowed to type whatever they want until they click away or hit enter/tab etc.

Is there a way to PREVENT the user from typing anything but STILL ALLOW them to click the "..." button?

I'm trying to mimic exactly how Telerik RadGrid's Columns property works.

Any advice would be helpful and appreciated!

-C

We have been using the TreeView in our software for some time now. However, recently, we noticed that it's not behaving as we have coded it. We had code that changed the Forcolor and Font when a node was selected. However, this doesn't seem to be working anymore. Attached is a sample code. Any help would be greatly appreciated.

FYI, we are using Telerik for Winforms: 2024.3.924.462

TIA

using System;
using System.Collections.Generic;
using System.Drawing;
using Telerik.WinControls;
using Telerik.WinControls.UI;

namespace TestNodeColorChange
{
   public partial class RadForm1 : Telerik.WinControls.UI.RadForm
   {
      #region Private Fields

      private string selectedNodeKey = string.Empty;

      #endregion Private Fields

      #region Public Constructors

      public RadForm1()
      {
         InitializeComponent();
         Load += FormLoading;
      }

      #endregion Public Constructors

      #region Private Methods

      private void FormLoading(object sender, EventArgs e)
      {
         List<TreeViewData> list = new List<TreeViewData>()
         {
            new TreeViewData { key = 1, DisplayValue = "Level 1" },
            new TreeViewData { key = 2, parentKey = 1, DisplayValue = "Branch A" },
            new TreeViewData { key = 3, parentKey = 1, DisplayValue = "Branch B" },
            new TreeViewData { key = 4, parentKey = 1, DisplayValue = "Branch C" }
         };

         radTreeView1.ChildMember = "key";
         radTreeView1.DisplayMember = "DisplayValue";
         radTreeView1.ParentMember = "parentKey";
         radTreeView1.DataSource = list;

         radTreeView1.ExpandAll();

         radTreeView1.SelectedNodeChanged += SelectedNodeChanged;
         radTreeView1.NodeFormatting += NodeFormatting;
      }

      private void NodeFormatting(object sender, TreeNodeFormattingEventArgs e)
      {
         if (e.NodeElement is LightVisualElement lve)
         {
            lve.ResetValue(VisualElement.ForeColorProperty, ValueResetFlags.Local);
            lve.ResetValue(VisualElement.FontProperty, ValueResetFlags.Local);

            if (e.Node.Value.ToString() == selectedNodeKey)
            {
               lve.Font = new Font(lve.Font.FontFamily, lve.Font.Size, FontStyle.Bold);
               lve.ForeColor = Color.Purple;
               radTreeView1.NodeFormatting -= NodeFormatting;
               radTreeView1.Refresh();
               radTreeView1.NodeFormatting += NodeFormatting;
               Console.WriteLine("NodeFormatting: " + selectedNodeKey);
               Console.WriteLine("NodeFormatting: " + e.NodeElement.ForeColor.ToString());
               Console.WriteLine("NodeFormatting: " + ((e.NodeElement.Font.Style & FontStyle.Bold) != 0));
            }
         }
      }

      private void SelectedNodeChanged(object sender, RadTreeViewEventArgs e)
      {
         selectedNodeKey = e.Node.Value.ToString();
         Console.WriteLine("SelectedNodeChanged: " + selectedNodeKey);
         radTreeView1.Nodes.Refresh();
      }

      #endregion Private Methods

      #region Internal Classes

      internal class TreeViewData
      {
         #region Public Properties

         public string DisplayValue { get; set; }
         public int key { get; set; }
         public int? parentKey { get; set; }

         #endregion Public Properties
      }

      #endregion Internal Classes
   }
}

Hi,

I've been struggling to work out how to export the current pdf page as shown in the pdfViewer after it has been rotated using controls in the pdfViewerNavigator. I'm trying to save the image in png format but it seems to export the page in the original orientation ignoring the applied rotation.  

Also whilst searching the forum for a solution, I came across the code

but  it appears that PageNo no longer exists in 2020.3.1020.

Currently i'm using

which exports the first page as a png, which works, I just need to save the currently selected page that may or may not have been rotated.

Is this possible, if so how ?

Hello, 

Is there a way to increase the size of the bar indicated by the arrow?

Best regards :)

Dear Sir

When I using the demo winform (version. 2025 Q1), all the menu drop-down menus were not displayed in the correct position for the first time. Include the controls of menus and ribbon bar in hidden mode. Could you please checked the display problem. Is there any solution to prevent the error from showing? Thanks.

Hi

I have a GridView with a relational hierarchy of two levels connected via two manual relations and two templates.

			gridViewRelation1.ChildColumnNames.Add("AktivitaetVorgang");
			gridViewRelation1.ChildTemplate = this.templateFremdeAktivitaetVorgaenge;
			gridViewRelation1.ParentTemplate = this.radGridPsz.MasterTemplate;
			gridViewRelation1.RelationName = "relationAktivitaetVorgang";

			gridViewRelation2.ChildColumnNames.Add("VorgangHandlungsBedarf");
			gridViewRelation2.ChildTemplate = this.templateFremdeVorgangHandlungsbedarfe;
			gridViewRelation2.ParentTemplate = this.templateFremdeAktivitaetVorgaenge;
			gridViewRelation2.RelationName = "relationVorgangHandlungsbedarfe";

			this.radGridPsz.Relations.AddRange(new Telerik.WinControls.UI.GridViewRelation[] {
				gridViewRelation1,
				gridViewRelation2});

The template of the second level is added to the Maintemplate, the template of the third level is added to the template of the second level.

Everything is working fine at first.

But if I save the layout of the grid and reload it after closing and opening the application again (via radGrid.SaveLayout and radGrid.LoadLayout),  there are no rows in the third level, although the datasource is the same, and they were there in the beginning.

The rows of the second level do not have childRows although the templates and relations are still there