I want to control a collapsible panel programmatically.  Also, I want the button section at the top hidden.  So far, I have that part working.  I also have the expanding/collasping working as well, but I have run into a problem. When I collapse the panel, the panel does not collapse all the way, it still sticks out a little bit, by like 12-14 pixels (in this case, on the bottom).  This is a problem for me, as I am expecting that entire space to be gone.

 

This is the Collasible Panel, where I have hidded the Header Panel and IsExanded is set to false:

 

This is the designer.cs part.  I am not sure what I am missing. What else to I need to do to make the panel have a height of 0.

namespace TEST
{
   partial class RadForm1
   {
      /// <summary>
      /// Required designer variable.
      /// </summary>
      private System.ComponentModel.IContainer components = null;
 
      /// <summary>
      /// Clean up any resources being used.
      /// </summary>
      /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
      protected override void Dispose(bool disposing)
      {
         if (disposing && (components != null))
         {
            components.Dispose();
         }
         base.Dispose(disposing);
      }
 
      #region Windows Form Designer generated code
 
      /// <summary>
      /// Required method for Designer support - do not modify
      /// the contents of this method with the code editor.
      /// </summary>
      private void InitializeComponent()
      {
         this.radCollapsiblePanel1 = new Telerik.WinControls.UI.RadCollapsiblePanel();
         ((System.ComponentModel.ISupportInitialize)(this.radCollapsiblePanel1)).BeginInit();
         this.radCollapsiblePanel1.SuspendLayout();
         ((System.ComponentModel.ISupportInitialize)(this)).BeginInit();
         this.SuspendLayout();
         // 
         // radCollapsiblePanel1
         // 
         this.radCollapsiblePanel1.IsExpanded = false;
         this.radCollapsiblePanel1.Location = new System.Drawing.Point(84, 96);
         this.radCollapsiblePanel1.Name = "radCollapsiblePanel1";
         this.radCollapsiblePanel1.OwnerBoundsCache = new System.Drawing.Rectangle(84, 96, 393, 200);
         // 
         // radCollapsiblePanel1.PanelContainer
         // 
         this.radCollapsiblePanel1.PanelContainer.Size = new System.Drawing.Size(0, 0);
         this.radCollapsiblePanel1.Size = new System.Drawing.Size(393, 21);
         this.radCollapsiblePanel1.TabIndex = 1;
         ((Telerik.WinControls.UI.RadCollapsiblePanelElement)(this.radCollapsiblePanel1.GetChildAt(0))).IsExpanded = false;
         ((Telerik.WinControls.UI.CollapsiblePanelHeaderElement)(this.radCollapsiblePanel1.GetChildAt(0).GetChildAt(1))).Visibility = Telerik.WinControls.ElementVisibility.Collapsed;
         // 
         // RadForm1
         // 
         this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
         this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
         this.ClientSize = new System.Drawing.Size(511, 254);
         this.Controls.Add(this.radCollapsiblePanel1);
         this.Name = "RadForm1";
         this.Text = " ";
         ((System.ComponentModel.ISupportInitialize)(this.radCollapsiblePanel1)).EndInit();
         this.radCollapsiblePanel1.ResumeLayout(false);
         ((System.ComponentModel.ISupportInitialize)(this)).EndInit();
         this.ResumeLayout(false);
 
      }
 
      #endregion
 
      private Telerik.WinControls.UI.RadCollapsiblePanel radCollapsiblePanel1;
   }
}

 

 

I have controls inside a RadCollapsiblePanel that I want to layout left to right and wrap to the next row.

I added a FlowLayoutPanel inside the RadCollapsiblePanel and added my controls in the FlowLayoutPanel.

However, the RadCollapsiblePanel doesn't display the scrollbars this way. It looks like the RadCollapsiblePanel isn't aware when the FlowLayoutPanel has overflown.

Hello, I need to use RadListView to display records in ListDetails in WINFORMS. I have an active field that returns true or false. I want to display it with a checkbox to make the display more presentable. Is this possible? I look forward to your responses. Thank you.

 

 

I implemented custom nodes by referring to https://docs.telerik.com/devtools/winforms/controls/treeview/working-with-nodes/custom-nodes.
I want to display an icon on the left, and on the right, display Title, line, and Text in order from top to bottom.
The first problem is that when displaying, the distance between line and Text is large, and adjusting the Padding and Margin of each element in CreateChildElements has no effect. See Figure 1 and Figure 1-1. If other items are commented out and only Title or Text is retained on the right, the display is correct, and it also displays correctly when TextWrap = true, as shown in Figure 2 and Figure 2-1.
The second problem is that when both Title and Text are displayed correctly, the display area is wrong when TextWrap = true, as shown in Figure 3，Figure 3-1.
The red rectangle in the figure indicates the error point.
Does anyone know where the problem lies?

Good morning,

Is there a way to enable natural sorting (two-way sorting) also in Winforms Virtualgrid? I saw that it is possible in ASP.NET AJAX libray (https://www.telerik.com/products/aspnet-ajax/documentation/controls/grid/functionality/sorting/controlling-sort-modes)

Thank you very much.

 

Emanuele

 

Hi sir 

 

      I install the version "2017_2_613_40" but in toolbox tab control not present how we enable that tab control

 

WinForms TreeView displays icons and text. How to obtain the Rectangle of the icon area, or how to implement the click event of the icon. Through the method in https://www.telerik.com/forums/hovering-over-node-image: 
TreeNodeImageElement imageElement = radTreeView1.ElementTree.GetElementAtPoint(e.Location) as TreeNodeImageElement;
The obtained structure is null, and the version is 2025.

thaks

 When the RadCheckBox or RadToggleButton control is clicked quickly, an exception will be thrown: System.NullReferenceException: "Object reference not set to an instance of an object."

   private void radCheckBox1_ToggleStateChanged(object sender, Telerik.WinControls.UI.StateChangedEventArgs args)
   {
   }

   private void radToggleButton1_ToggleStateChanged(object sender, Telerik.WinControls.UI.StateChangedEventArgs args)
   {
   }

Hi there,


I have written a component that resides within a column of a RadGridView. Based on the provided source code, I need the cell events like CellBeginEdit, CellEndEdit, and CellValueChanged in the RadGridView to be handled intelligently and reliably for columns of the AdvancedRadMultiColumnComboPlus type.

In other words, how can I get events like CellBeginEdit, CellEndEdit, and CellValueChanged to fire for columns of the AdvancedRadMultiColumnComboPlus type?

Please guide me.

Thank you.

I'm experiencing a bizarre issue with RadGridView.

I had a grid on a form that displays the results of a List collection. Pretty simple, but there was one column that refused to display the data. The column itself appeared but the data didn't display. I moved everything to another form and it worked fine.

Now I added another column to the grid and now that won't display data. The data is in the list collection, the FieldName property is correct  (I even copied it from the POCO to make sure.). Then  I added another column to the grid and it won't display at all at runtime even though it shows in the designer. Here is the code from the designer:

Any ideas on this one. I've never had a grid act like this before. Unfortunately I can't send you demo code s if I copy it to another form it will work.

Carl

           gvMemos.MasterTemplate.AllowAddNewRow = false;
           gvMemos.MasterTemplate.AllowColumnHeaderContextMenu = false;
           gvMemos.MasterTemplate.AllowDeleteRow = false;
           gvMemos.MasterTemplate.AllowEditRow = false;
           gvMemos.MasterTemplate.AllowRowHeaderContextMenu = false;
           gvMemos.MasterTemplate.AllowRowResize = false;
           gvMemos.MasterTemplate.AllowSearchRow = true;
           gvMemos.MasterTemplate.AutoSizeColumnsMode = Telerik.WinControls.UI.GridViewAutoSizeColumnsMode.Fill;
           gridViewTextBoxColumn1.EnableExpressionEditor = false;
           gridViewTextBoxColumn1.FieldName = "MemoOptionsDescription";
           gridViewTextBoxColumn1.HeaderText = "column1";
           gridViewTextBoxColumn1.Name = "column1";
           gridViewTextBoxColumn1.ReadOnly = true;
           gridViewTextBoxColumn1.Width = 284;
           gridViewTextBoxColumn2.DataType = typeof(DateTime);
           gridViewTextBoxColumn2.EnableExpressionEditor = false;
           gridViewTextBoxColumn2.FieldName = "DateTimeStamp";
           gridViewTextBoxColumn2.HeaderText = "Date/Time";
           gridViewTextBoxColumn2.Name = "Date";
           gridViewTextBoxColumn2.Width = 284;
           gridViewTextBoxColumn3.EnableExpressionEditor = false;
           gridViewTextBoxColumn3.FieldName = "MemoText2";
           gridViewTextBoxColumn3.HeaderText = "Memo Description";
           gridViewTextBoxColumn3.Name = "Memo Description";
           gridViewTextBoxColumn3.ReadOnly = true;
           gridViewTextBoxColumn3.Width = 284;
           gridViewTextBoxColumn4.EnableExpressionEditor = false;
           gridViewTextBoxColumn4.FieldName = "AssignedTo";
           gridViewTextBoxColumn4.HeaderText = "Assigned To";
           gridViewTextBoxColumn4.Name = "Assigned To";
           gridViewTextBoxColumn4.ReadOnly = true;
           gridViewTextBoxColumn4.Width = 284;
           gridViewTextBoxColumn5.FieldName = "MemoTypeDescription";
           gridViewTextBoxColumn5.HeaderText = "Type";
           gridViewTextBoxColumn5.Name = "Memo Type";
           gridViewTextBoxColumn5.Width = 284;
           gridViewTextBoxColumn6.EnableExpressionEditor = false;
           gridViewTextBoxColumn6.FieldName = "MemoOptionsDescription";
           gridViewTextBoxColumn6.HeaderText = "Options";
           gridViewTextBoxColumn6.Name = "Options";
           gridViewTextBoxColumn6.ReadOnly = true;
           gridViewTextBoxColumn6.Width = 284;
           gridViewTextBoxColumn7.EnableExpressionEditor = false;
           gridViewTextBoxColumn7.FieldName = "OperID";
           gridViewTextBoxColumn7.HeaderText = "User";
           gridViewTextBoxColumn7.Name = "User";
           gridViewTextBoxColumn7.ReadOnly = true;
           gridViewTextBoxColumn7.Width = 282;
           gvMemos.MasterTemplate.Columns.AddRange(new Telerik.WinControls.UI.GridViewDataColumn[] { gridViewTextBoxColumn1, gridViewTextBoxColumn2, gridViewTextBoxColumn3, gridViewTextBoxColumn4, gridViewTextBoxColumn5, gridViewTextBoxColumn6, gridViewTextBoxColumn7 });
           gvMemos.MasterTemplate.EnableAlternatingRowColor = true;
           gvMemos.MasterTemplate.EnablePaging = true;
           gvMemos.MasterTemplate.ShowGroupedColumns = true;
           gvMemos.MasterTemplate.ViewDefinition = tableViewDefinition1;
           gvMemos.Name = "gvMemos";
           gvMemos.Size = new System.Drawing.Size(1767, 229);
           gvMemos.TabIndex = 4;
           gvMemos.CellFormatting += OnCellFormattingMemos;
           gvMemos.ViewCellFormatting += OnViewCellFormattingMemos;
           gvMemos.ContextMenuOpening += OnContextMenuOpeningMemos;
           gvMemos.DoubleClick += gvMemos_DoubleClick;