Questions on UI for WinForms Forum

1 answer

134 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

201 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

141 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

146 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

153 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

190 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

1 answer

141 views

The Folder icon should be highlight in the Menu items.

Hi Team,

In our application we are using the RadTreeView control to add the Menu items.
While clicking or mouse over on the Menu items (Form Name) the folder icon should be highlight. Please do the needful. Video link mentioned below for your reference.

Video link : https://ttprivatenew.s3.amazonaws.com/pulse/suganya-gmail/attachments/17438074/TinyTake13-07-2021-04-01-27.mp4

Screenshot : https://prnt.sc/1aruj97

Treeview

answered on 15 Jul 2021

1 answer

205 views

Added RadCheckedListBox control on form, but null in code when I try to access it

SOLVED: InitializeComponent() wasn't being called. Thought this was automatic?

I would have deleted this post, but there is no option.

I dragged the RadCheckedListBox to the form. But when I try to add data to the Item property, I get an exception because the control is null. I thought that like other controls, the RadCheckedListBox methods and properties could be accessed without having to be instantiated first. The instantiation is in Private Sub InitializeComponent() :

Me.cklstSuppressedTickets = New Telerik.WinControls.UI.RadCheckedListBox()
CType(Me.cklstSuppressedTickets,System.ComponentModel.ISupportInitialize).BeginInit
Me.grpSuppressedTickets.Controls.Add(Me.cklstSuppressedTickets)
Me.cklstSuppressedTickets.Columns.AddRange(New Telerik.WinControls.UI.ListViewDetailColumn() {ListViewDetailColumn1})
Me.cklstSuppressedTickets.Location = New System.Drawing.Point(78, 61)
Me.cklstSuppressedTickets.Name = "cklstSuppressedTickets"
Me.cklstSuppressedTickets.Size = New System.Drawing.Size(290, 357)
Me.cklstSuppressedTickets.TabIndex = 0

cklstSuppressedTickets is the RadCheckedListBox that I added to the form using the designer. When I highlight the control in code during debug, it shows cklstSuppressedTickets as 'Nothing'.

	Private Sub LoadList()
		Dim tkt As KeyValuePair(Of String, string)
		For each tkt In dctTickets
			cklstSuppressedTickets.Items.Add(tkt.Key & "  -  " & tkt.Value)
		Next
	End Sub

CheckedListBox

answered on 15 Jul 2021

1 answer

145 views

RadPrintDocument - Row Number

Hi

Please Help

Language: VB.Net (VS2017)

Telerik Version: 2017.3.1017

I am printing from radGridView with RadPrintDocument. Please advise how to add row numbers in the printpreview/print document.

In radGridView, row number is there in Row Header.

Thanks

GridView

answered on 13 Jul 2021

2 answers

237 views

Grid: Change arrows for child records

Hi,

I have a RadGrid containing a self-referencing hierarchy of data. All works perfectly.

However, when it comes to styling, I am using one of the standard theme. However, I would like to change the default images for the expand/collapse arrows for showing/hiding the child elements, but nothing else .

How do I go about handling this?

Regards

Thomas

GridView

answered on 13 Jul 2021