Hi.

I want to know if there is a way to NOT execute the code in "SelectedIndexChanged" when the form loads the first time

Regards

Kobus

is it posssible to add a button to the header of a radcollapsiblepanel from the designer code ,if so can a anyone please guide me. 

Hi,

I've followed the instructions for creating a custom visual Item, but I need some direction on how to make that example more useful and attractive.

What I need is the item image shown (a thumbnail image, it's an image gallery listview), and under that I need two buttons with transparent png images, side by side.  32x32 icons (and the listview item itself is big, like 180x180.) Under the icons I need the Text of the bound item with 18pt font.

I've tried adding panels with the buttons, adding a lable element with custom font size... it's not really coming along very nicely and I feel like I'm just stumbling along and one day might get it all looking good haha

I added event handlers for the buttons inside my custom item class, is that the righ way to do it?

delBtnElem.Click += delBtnElem_Click;

But now the top-level click event on the item is not firing. Is my panel overlaying it all? I set an huge top margin to try to align the buttons under the Icon View image.

So maybe you can help me figure out the best way to lay it out?

Thank You!

-David

Here is the code in my Custom Item class (GalleryItemView):  

public class GalleryItemView : IconListViewVisualItem
    { ...
 
 
protected override void CreateChildElements()
        {
            base.CreateChildElements();

            stack.Orientation = Orientation.Vertical;
            btnPanel.Margin = new Padding(0, 80, 0, 0);

            printBtnElem.Image = Image.FromFile(@"..\..\Resources\print-icon.png");
            printBtnElem.TextImageRelation = System.Windows.Forms.TextImageRelation.ImageAboveText;
            printBtnElem.Click += printBtnElem_Click;

            delBtnElem.Image = Image.FromFile(@"..\..\Resources\delete-icon.png");
            delBtnElem.TextImageRelation = System.Windows.Forms.TextImageRelation.ImageAboveText;
            delBtnElem.Click += delBtnElem_Click;

            titleElem.Margin = new Padding(8);
            titleElem.CustomFontSize = 18F;

            btnPanel.Children.Add(printBtnElem);
            btnPanel.Children.Add(delBtnElem);
            stack.Children.Add(btnPanel);
            stack.Children.Add(titleElem);
            this.Children.Add(stack);
        }

Here is some code form my Form:

 private void radListViewGallery_VisualItemCreating(object sender, ListViewVisualItemCreatingEventArgs e)
        {
            if (this.radListViewGallery.ViewType == ListViewType.IconsView)
            {
                e.VisualItem = new GalleryItemView();
            }
        }

void radListViewGallery_VisualItemFormatting(object sender, Telerik.WinControls.UI.ListViewVisualItemEventArgs e)
        {
            e.VisualItem.DrawText = false;
            e.VisualItem.ImageLayout = ImageLayout.Zoom;
            e.VisualItem.ImageAlignment = ContentAlignment.MiddleCenter;
        }

        void radListViewGallery_ItemDataBound(object sender, Telerik.WinControls.UI.ListViewItemEventArgs e)
        {
            var databoundItem = e.Item.DataBoundItem as MyImageObject;
            e.Item.Image = databoundItem.Image;
            e.Item.Text = databoundItem.FilePath;
        }

more details about the ListView

 class MyImageObject
        {
            public Image Image { get; set; }
            public string FilePath { get; set; }
            public MyImageObject(Image img, string filePath)
            {
                this.Image = img;
                this.FilePath = filePath;
            }
        }

 private void RefreshFileList(string _filePath, FileFilterType _filterType)
        {
            List<String> fileList = new List<String>();
            if (_filterType == FileFilterType.All)
            {
                var extensionFilter = new String[] { "*.png", "*.bmp", "*.jpg", "*.mp4" };
                foreach (String extension in extensionFilter)
                {
                    String[] files = Directory.GetFiles(_filePath, extension, SearchOption.TopDirectoryOnly);
                    foreach (String file in files)
                        fileList.Add(file);
                }
            }

            if (_filterType == FileFilterType.Video) fileList = Directory.GetFiles(_filePath, "*.mp4", SearchOption.TopDirectoryOnly).ToList();

            if (_filterType == FileFilterType.Images)
            {
                var extensionFilter = new String[] { "*.png", "*.bmp", "*.jpg" };
                foreach (String extension in extensionFilter)
                {
                    String[] files = Directory.GetFiles(_filePath, extension, SearchOption.TopDirectoryOnly);
                    foreach (String file in files)
                        fileList.Add(file);
                }
            }

            imageList.Clear();
            foreach (var mediaFileName in fileList.OrderByDescending(f => f))
            {
                var fileNameLowCase = mediaFileName.ToLower();
                if (fileNameLowCase.Contains(".png") || fileNameLowCase.Contains(".bmp") || fileNameLowCase.Contains(".jpg"))
                {
                    var tempImage = Image.FromFile(fileNameLowCase);
                    Bitmap pic = new Bitmap(96, 64);
                    using (Graphics g = Graphics.FromImage(pic))
                    {
                        g.DrawImage(tempImage, new Rectangle(0, 0, pic.Width, pic.Height));
                    }
                    imageList.Add(new MyImageObject(pic, fileNameLowCase));
                    tempImage.Dispose();
                }
                if (fileNameLowCase.Contains(".mp4"))
                {
                    var thumb = getThumbnail(fileNameLowCase);
                    if (thumb == null)
                    {
                        Bitmap pic = new Bitmap(96, 64);
                        using (Graphics g = Graphics.FromImage(pic))
                        {
                            g.DrawImage(ICUSBCamera.Properties.Resources.play_button, new Rectangle(0, 0, pic.Width, pic.Height));
                        }
                        imageList.Add(new MyImageObject(pic, fileNameLowCase));
                    } else imageList.Add(new MyImageObject(thumb, fileNameLowCase));


                }
            }
            radListViewGallery.DataSource = imageList;
        }

I have tried to do this in a few places... but perhaps this is not supported

I'd like to be able to apply HTML formatting to the LegendItem Title so that when the  (Datapoint.LegendTitle) in the LabelFormatting routine causes the title to have html applied.

Hello.

I build a Combo from a table

                DataTable dt = lb.clsDB_user_store_gen.get_dt_for_all_user_store();
                cboReporter.DataSource = dt;
                cboReporter.ValueMember = "uid";
                cboReporter.DisplayMember = "displayName";

I put the form in ADD MODE, and wand to say in the first record "Select a Reporter" 

It works the first time. When I update the record and clear the form, I call the code below. this then add the text again. (sorry wanted to add small video, but mp4 not supported)

                // cboReporter
                cboReporter.SelectedText = "";
                cboReporter.SelectedText = "Select a Reporter";
                // cboAssignee
                cboAssignee.SelectedText = "";
                cboAssignee.SelectedText = "Select a Assignee";

Hello, do you have any quick simple examples of adding a RadDropDownButtonElement to a Listview? I have implemented some of the other controls like a RadDropDownListElement and RadCheckBoxElement but those seem to have synchronize events and this does not? Do you have any examples of this control? 

Thank you!

HI

I want to show blank row at top of multicolumncombobox. My code is in vb.net

   Dim dr = dbManager.GetDataReader("SP_NewLotNo_Select", CommandType.StoredProcedure, parameters.ToArray(), connection)
        Dim dt As DataTable = New DataTable()

        dt.Load(dr)

        Try
            'Insert the Default Item to DataTable.
            Dim row As DataRow = dt.NewRow()
            row(0) = 0
            row(1) = "---Select---"
            dt.Rows.InsertAt(row, 0)

            'Assign DataTable as DataSource.
            cmbLotNo.DataSource = dt
            cmbLotNo.DisplayMember = "LotNumber"
            cmbLotNo.ValueMember = "NewLotId"

            cmbLotNo.Refresh()

            cmbLotNo.SelectedIndex = -1

            cmbLotNo.AutoCompleteMode = AutoCompleteMode.SuggestAppend
            cmbLotNo.AutoSizeDropDownToBestFit = False
            cmbLotNo.BestFitColumns(True, False)
            cmbLotNo.Columns(0).IsVisible = False
            cmbLotNo.Columns(3).TextAlignment = ContentAlignment.MiddleRight
            Me.cmbLotNo.AutoSizeDropDownToBestFit = True

            Me.cmbLotNo.AutoFilter = True
            Me.cmbLotNo.DisplayMember = "LotNumber"
            Dim filter As New FilterDescriptor()
            filter.PropertyName = Me.cmbLotNo.DisplayMember
            filter.Operator = FilterOperator.Contains
            Me.cmbLotNo.EditorControl.MasterTemplate.FilterDescriptors.Add(filter)
        Catch ex As Exception
            MessageBox.Show("Error:- " & ex.Message)
        Finally
            dr.Close()
            dbManager.CloseConnection(connection)
        End Try

its working but not perfectly as i want attaching image for output.

Thanks

Nandan

I'd like to start off by saying that your code editor performs better than any of your major competitors with very large files which is great for my purpose. Really very impressed with how well it works!

That said I have a couple of issues that are really affecting my user experience with using it.

The first is there does not appear to be a word wrap option. Not sure if I am blind, but if so could you please point out how to use it?

The second is the number of lines scrolled when using the mouse wheel is far too many. Is there an option to configure this? Typically in most editors 3 is a good default. Unfortunately with this the number is 15+.

One more to top it off is the Line number margin. How do I increase the size? The number is getting cut off noticeably with anything 20,000 and above. I attached a screenshot to show what I mean for that. I might be blind again but I cannot see how to configure this in the documentation.

Morning,

I have a project in VS2022 targeting .NET 6.0 and using the UI.for.WinForms.AllControls.Net60 NuGet package. On installation of the package all controls appear in the Toolbox as expected. Upon restarting Visual Studio, all of the controls have disappeared. Attempting to re-add them manually from Choose Toolbox Items and browsing to the package DLLs results in errors as below for each DLL.

Do you have any suggestions as to why the controls won't persist in VS?

We've tried uninstalling and re-installing VS so as to start with a fresh install but the same issue occurs.

Many thanks,

John.

Dear all,

probably a very simple question

I am using a SplitContainer with four vertical panels. The default behavior is that the handles (little arrows) are always visible even when the panel is "minimized" with only one center little arrow shown as handle.. (see attached image).

If I use panel.collapsed = true, the panel is masked but the handle is not shown anymore and the user cannot act on it .

How can I do to programmatically mimic the standard interactive behavior and manipulate the three arrows ?

Many thanks

Patrick