Questions on UI for WinForms Forum

0 answers

52 views

Projects fail to build in .NET Core/.NET 5.0 while restoring NuGet

Only users that have Telerik installation version 2021.1.122 are affected.

Symptoms:

Clients that have Telerik installation version 2021.1.122 can not build successfully .NET Core/.NET 5.0 projects. The following error occurs while compiling the project:

The problem is a missing NuGet fallback folder.

Solution:

You should create the missing ToolboxNuGetPackages folder in the installation folder of the controls, usually at C:\Program Files (x86)\Progress\ToolboxNuGetPackages.

General Discussions

asked on 28 Jan 2021

4 answers

17 views

How to loop all controls in raddataentry

I have a rad data entry in a form that when I change the data through it's bindings it doesn't clear all the fields. Usually check boxes and dates or dropdowns leave their current selected value if the new data set has null values.

!. is there a way to fix that?

2. If not how can I loop through all the controls in the rad data entry to clear all the controls?

Below only shows 4 controls instead of the many that textboxes, etc. *Rde is the name of the rad data entry item

foreach (Control c in Rde.Controls)
{
MessageBox.Show(c.Name);
}

DataEntry

answered on 22 Jul 2021

0 answers

9 views

RadRichTextEditor Content Control

Dear Team,

I am trying to create a content control structure with radrichtexteditor control with the below structure :

______________________________________________________

Description: (not editable)

editable content here

Impressions: (not editable)

editable content here

Findings:(not editable)

editable content here

Remarks: (not editable)

editable content here

______________________________________________________

Below are the issues I am facing

1. I try inserting a content control but not working using this documentation : Working with Content Controls | RadRichTextEditor | Telerik UI for WinForms

2. RadRichTextRibbonbar Developer Tab not visible

3. I also tried to load xaml file from the "structure content example application" to new created richtexteditor control. also not working.

Kindly provide me with a sample project.

Thank You.

RichTextEditor

asked on 21 Jul 2021

1 answer

7 views

Issue with RadListView when height is arbitrary

Basically, I've created a custom list view item, there is no issues by default, but when I add an element to the item's element, when you scroll the item out of bounds it will add the element that was in the intended element into another element and remove it from the original element it was added to. How can I fix this from happening?

EDIT: This happens when item height is NOT arbitrary too.

EDIT 2: I have messed around, now I am no longer adding any elements (as a test), all I am doing is changing the background color of the element, when the item goes out of bounds another item in another expanded group will be the same background color and the original item will lose the background color. There is no way for me to fix this from what I can tell.

ListView

answered on 21 Jul 2021

1 answer

12 views

CommandBar designer code automatically changing

Hi there,

Using control version 2021.2.615

VS2019 16.10.3

I have some code using a CommandBar and CommandBarStrips as below:

            // 
            // CommandBar
            // 
            this.CommandBar.Dock = System.Windows.Forms.DockStyle.Top;
            this.CommandBar.Location = new System.Drawing.Point(0, 25);
            this.CommandBar.Name = "CommandBar";
            this.CommandBar.Rows.AddRange(new Telerik.WinControls.UI.CommandBarRowElement[] {
            this.CommandBarRow});
            this.CommandBar.Size = new System.Drawing.Size(1241, 31);
            this.CommandBar.TabIndex = 4;
            this.CommandBar.ThemeName = "FluentDark";
            // 
            // CommandBarRow
            // 
            this.CommandBarRow.MinSize = new System.Drawing.Size(25, 25);
            this.CommandBarRow.Name = "CommandBarRow";
            this.CommandBarRow.Strips.AddRange(new Telerik.WinControls.UI.CommandBarStripElement[] {
            this.CommandBarToolStrip,
            this.CommandBarModelStrip});
            // 
            // CommandBarToolStrip
            // 
            this.CommandBarToolStrip.Alignment = System.Drawing.ContentAlignment.TopCenter;
            this.CommandBarToolStrip.AutoSize = true;
            this.CommandBarToolStrip.DisplayName = "commandBarStripElement1";
            this.CommandBarToolStrip.EnableDragging = false;
            this.CommandBarToolStrip.Name = "CommandBarToolStrip";
            // 
            // 
            // 
            this.CommandBarToolStrip.OverflowButton.Enabled = false;
            this.CommandBarToolStrip.OverflowButton.Visibility = Telerik.WinControls.ElementVisibility.Hidden;
            ((Telerik.WinControls.UI.RadCommandBarOverflowButton)(CommandBarToolStrip.GetChildAt(2))).Enabled = false;
            ((Telerik.WinControls.UI.RadCommandBarOverflowButton)(CommandBarToolStrip.GetChildAt(2))).Visibility = Telerik.WinControls.ElementVisibility.Hidden;
            // 
            // CommandBarModelStrip
            // 
            this.CommandBarModelStrip.Alignment = System.Drawing.ContentAlignment.TopRight;
            this.CommandBarModelStrip.AutoSize = true;
            this.CommandBarModelStrip.DisplayName = "commandBarStripElement1";
            this.CommandBarModelStrip.Items.AddRange(new Telerik.WinControls.UI.RadCommandBarBaseItem[] {
            this.lblCurrModel,
            this.CurrentModelList});
            this.CommandBarModelStrip.Name = "CommandBarModelStrip";
            // 
            // 
            // 
            this.CommandBarModelStrip.OverflowButton.Enabled = false;
            this.CommandBarModelStrip.OverflowButton.Visibility = Telerik.WinControls.ElementVisibility.Hidden;
            this.CommandBarModelStrip.Text = "";
            ((Telerik.WinControls.UI.RadCommandBarOverflowButton)(CommandBarModelStrip.GetChildAt(2))).Enabled = false;
            ((Telerik.WinControls.UI.RadCommandBarOverflowButton)(CommandBarModelStrip.GetChildAt(2))).Visibility = Telerik.WinControls.ElementVisibility.Hidden;
            // 
            // lblCurrModel
            // 
            this.lblCurrModel.Alignment = System.Drawing.ContentAlignment.MiddleLeft;
            this.lblCurrModel.DisplayName = "commandBarLabel1";
            this.lblCurrModel.Name = "lblCurrModel";
            this.lblCurrModel.Text = "Current Model : ";
            // 
            // CurrentModelList
            // 
            this.CurrentModelList.AutoEllipsis = true;
            this.CurrentModelList.AutoSize = false;
            this.CurrentModelList.Bounds = new System.Drawing.Rectangle(0, 0, 300, 24);
            this.CurrentModelList.DisplayName = "commandBarDropDownList1";
            this.CurrentModelList.DropDownAnimationEnabled = true;
            this.CurrentModelList.DropDownStyle = Telerik.WinControls.RadDropDownStyle.DropDownList;
            this.CurrentModelList.MaxDropDownItems = 0;
            this.CurrentModelList.Name = "CurrentModelList";
            this.CurrentModelList.Text = "";
            this.CurrentModelList.SelectedIndexChanged += new Telerik.WinControls.UI.Data.PositionChangedEventHandler(this.CurrentModelList_SelectedIndexChanged);

The above code compiles and runs with no issue.

If I open the designer for this form, then the above code is automatically replaced by the code below:

            // 
            // CommandBar
            // 
            this.CommandBar.Dock = System.Windows.Forms.DockStyle.Top;
            this.CommandBar.Location = new System.Drawing.Point(0, 25);
            this.CommandBar.Name = "CommandBar";
            this.CommandBar.Size = new System.Drawing.Size(1241, 31);
            this.CommandBar.TabIndex = 4;
            this.CommandBar.ThemeName = "FluentDark";
            ((Telerik.WinControls.UI.CommandBarRowElement)(CommandBar.GetChildAt(0).GetChildAt(0).GetChildAt(0))).Name = "CommandBarRow";
            ((Telerik.WinControls.UI.CommandBarRowElement)(CommandBar.GetChildAt(0).GetChildAt(0).GetChildAt(0))).MinSize = new System.Drawing.Size(25, 25);
            ((Telerik.WinControls.UI.CommandBarStripElement)(CommandBar.GetChildAt(0).GetChildAt(0).GetChildAt(0).GetChildAt(0))).Alignment = System.Drawing.ContentAlignment.TopCenter;
            ((Telerik.WinControls.UI.CommandBarStripElement)(CommandBar.GetChildAt(0).GetChildAt(0).GetChildAt(0).GetChildAt(0))).Name = "CommandBarToolStrip";
            ((Telerik.WinControls.UI.RadCommandBarOverflowButton)(CommandBar.GetChildAt(0).GetChildAt(0).GetChildAt(0).GetChildAt(0).GetChildAt(2))).Enabled = false;
            ((Telerik.WinControls.UI.RadCommandBarOverflowButton)(CommandBar.GetChildAt(0).GetChildAt(0).GetChildAt(0).GetChildAt(0).GetChildAt(2))).Visibility = Telerik.WinControls.ElementVisibility.Hidden;
            ((Telerik.WinControls.UI.CommandBarStripElement)(CommandBar.GetChildAt(0).GetChildAt(0).GetChildAt(0).GetChildAt(1))).Alignment = System.Drawing.ContentAlignment.TopRight;
            ((Telerik.WinControls.UI.CommandBarStripElement)(CommandBar.GetChildAt(0).GetChildAt(0).GetChildAt(0).GetChildAt(1))).Name = "CommandBarModelStrip";
            ((Telerik.WinControls.UI.CommandBarLabel)(CommandBar.GetChildAt(0).GetChildAt(0).GetChildAt(0).GetChildAt(1).GetChildAt(1).GetChildAt(0))).Text = "Current Model : ";
            ((Telerik.WinControls.UI.CommandBarLabel)(CommandBar.GetChildAt(0).GetChildAt(0).GetChildAt(0).GetChildAt(1).GetChildAt(1).GetChildAt(0))).Alignment = System.Drawing.ContentAlignment.MiddleLeft;
            ((Telerik.WinControls.UI.CommandBarLabel)(CommandBar.GetChildAt(0).GetChildAt(0).GetChildAt(0).GetChildAt(1).GetChildAt(1).GetChildAt(0))).Name = "lblCurrModel";
            ((Telerik.WinControls.UI.CommandBarDropDownList)(CommandBar.GetChildAt(0).GetChildAt(0).GetChildAt(0).GetChildAt(1).GetChildAt(1).GetChildAt(1))).AutoSize = false;
            ((Telerik.WinControls.UI.CommandBarDropDownList)(CommandBar.GetChildAt(0).GetChildAt(0).GetChildAt(0).GetChildAt(1).GetChildAt(1).GetChildAt(1))).Name = "CurrentModelList";
            ((Telerik.WinControls.UI.RadCommandBarOverflowButton)(CommandBar.GetChildAt(0).GetChildAt(0).GetChildAt(0).GetChildAt(1).GetChildAt(2))).Enabled = false;
            ((Telerik.WinControls.UI.RadCommandBarOverflowButton)(CommandBar.GetChildAt(0).GetChildAt(0).GetChildAt(0).GetChildAt(1).GetChildAt(2))).Visibility = Telerik.WinControls.ElementVisibility.Hidden;
            //

This code compiles but on running the first line containing all the .GetChildAt calls throws IndexOutOfRange.

Sometimes it deletes the code completely, leaving just this:

            // 
            // CommandBar
            // 
            this.CommandBar.Dock = System.Windows.Forms.DockStyle.Top;
            this.CommandBar.Location = new System.Drawing.Point(0, 25);
            this.CommandBar.Name = "CommandBar";
            this.CommandBar.Size = new System.Drawing.Size(1241, 30);
            this.CommandBar.TabIndex = 4;
            this.CommandBar.ThemeName = "FluentDark";

Any idea what's happening here?

Many thanks,

John.

CommandBar

Form

answered on 20 Jul 2021

0 answers

10 views

How Set Events After Load RadPanorama Layout

This is not a question, but a help for my future me!

When you load a layout your RadTitleElement miss events, you cannot directly set .Click event, for example, on the RadTitleElement object memory var.

You need to find out the element and set the event.

So the code below shows how to do it.

void LoadLayout(RadPanorama panorama, string userFileConfig)
{

    panorama.LoadLayout(fileUserConfig);

    Fire("radTileElement1").click += (ss,ee) => DoSomething();
    Fire("myCustomElementName").click += DoSomething2();
    //....
}

#if (DEBUG)
private string missingBlocks { get; set; } = "";

#endif
private RadTileElement Fire(string name)
        {
            for (var n = 0; n < radPanorama1.Groups.Count(); n++)
            {
                var grp = (TileGroupElement)radPanorama1.Groups[n];
                foreach (RadTileElement item in grp.Items)
                {
                    if (item.Name.IsEquals(name)) return item;
                }
            }
#if (DEBUG)
            missingBlocks += ";" + name;
            // This guide you if goes wrong any .Name property
            System.Diagnostics.Debug.WriteLine(missingBlocks);
#endif
return new RadTileElement();
        }

How use it?

Any were you like restore a layout:

LoadLayout(radPanorama1, mySavedLayoutFile);

#jefferson2020

Panorama

asked on 19 Jul 2021

1 answer

9 views

set a shortcut for the focus on RadGridView

Good morning
Please I would like to know if it is possible to set a shortcut

to activate the focus on a RadGridView, and then move between the lines with the keyboard arrows.

Thank you

Fabrizio

GridView

answered on 19 Jul 2021

1 answer

7 views

ListControl doesn't scroll to new item

Hi.

I have a listbox on a form. The user enters a value in a text box, clicks a button, the value is added to the list. All that works. The button click also sets the selected item to be the just entered value and calls scrolltoitem to reposition the listbox. The list box doesn't reposition.

Here is the code from the button click function:

        private void radButton1_Click(object sender, EventArgs e)
        {
            var item = radTextBox1.Text;
            if (string.IsNullOrWhiteSpace(item))
                return;

            // let's make sure this folder doesn't already exist in the list.
            if (radListControl1.Items.Contains(item))
                return;

            var newItem = new RadListDataItem(item, item);

            radListControl1.Items.Add(newItem);
            radListControl1.SelectedItem = newItem;

            radListControl1.ScrollToItem(newItem);
        }

I have also attached a working example.

Why doesn't this work as expected?

Thanks

-marc

ListControl

answered on 19 Jul 2021

3 answers

9 views

Moving TabbedForm with multiple tab is laggy

Hi,

We experienced some performance issue with the tabbedform components when there are some tab opened. When you try to move the application, by selecting the title bar, the move is very laggy.

You can reproduce the issue with the demo project "First Look" of tabbedform. Just add 20 tabs and try to move the application, you will experienced some lags.

Do you have a workaround to avoid this behavior ?

Thanks a lot

TabbedForm

answered on 16 Jul 2021

5 answers

13 views

RadContextMenu Winforms - How to change hover over colours?

Could you tell me if it is possible to change the colour of the item being hovered over within a dynamically created RadContextMenu. I have implemented the code below but it is leaving a "shadow" background system default (see attached) (with

From init code:

 e.ContextMenu.MouseMove += ContextMenu_MouseMove;

Within Form code:

RadMenuItem lastHoveredItem;
private void  ContextMenu_MouseMove(object sender, MouseEventArgs e)
        {
            RadDropDownMenu menu = (RadDropDownMenu)sender;
            RadMenuItem hoveredItem = menu.ElementTree.GetElementAtPoint(e.Location) as RadMenuItem;
            if (hoveredItem != null)
            {
                if(lastHoveredItem != null && lastHoveredItem != hoveredItem)
                {
                    lastHoveredItem.FillPrimitive.ResetValue(FillPrimitive.BackColorProperty, ValueResetFlags.Local);
                    lastHoveredItem.FillPrimitive.ResetValue(FillPrimitive.ForeColorProperty, ValueResetFlags.Local);
                    lastHoveredItem.ForeColor = Color.Black;
                }

                hoveredItem.FillPrimitive.BackColor = Theming.Current.HighlightedBackground;
                hoveredItem.ForeColor = Theming.Current.HighlightedText1;
                lastHoveredItem = hoveredItem;
            }

        }

The Reset value above is not resetting the ForeColor thus the hard coding back to Black.

UPDATE:

The menu items are dynamically created with menu.Items.Clear() called each time. I have created a method which is called once the context menu has been built which runs the code you suggested (looping through the items within the menu) but I am once again getting the "lagged" yellow highlight color showing. It seems to be due to the child/nested context menu entries as I get no issue on single context menus with no children - see newly attached image

ContextMenu

answered on 15 Jul 2021