Questions on UI for WinForms Forum

3 answers

136 views

[Solved] Scrolling graphical bug

Hi,

There's a graphical problem with RadPageView Q1 2015.

I tested it on a new project (cf screenshot)

When on ExplorerBar mode, you have more than 1 Page and use scroll button of your mouse, the component blinks.

Happens too if your scrollvalue=0 and you move up and scrollvalue=max and you move down.

PageView

answered on 30 Oct 2015

4 answers

617 views

Retrieving value of cell on right click

So I know how to return any value using the CurrentRow. Let's say a user has one row selected, and they right-click on a different row, I need to retrieve the value from that row. I've been looking at CurrentRowChanging & Changed as I suspect I need to capture the value there. I think my issue is the value being returned now is the value from the previously selected row and I'm not aware of the event trigger hierarchy.

Any help? Thanks

GridView

answered on 30 Oct 2015

1 answer

125 views

GridViewMultiCheckBoxColumn

I'm trying to create GridViewComboBoxColumn that works like a RadComboBox with the CheckBoxes property set to True.

Reading through this post, I cannot find the RadGridView_RowLoaded event.

Under the section "Customize the DropDownListEditor in GridViewComboBoxColumn" in this post, would I do something like that to create CheckBoxes? From this example, it looks like it would affect all GridViewComboBoxColumns. How would I make it only affect the specific column?

GridView

answered on 29 Oct 2015

11 answers

2.4K+ views

Index out of range when refreshing grids datasource

Hi,

When i try and refresh the grid's datasource after deleting a row, i get the following error:

A first chance exception of type 'System.ArgumentOutOfRangeException' occurred in mscorlib.dll
Additional information: Index was out of range. Must be non-negative and less than the size of the collection.

Telerik version: 2015.3.930.40
Framework version: 4.0
Operating system: Windows 10

Here is the refresh code:

        private void RefreshGrid()

        {



            if (legalsManager == null)

            {

                if (_model.DocumentId.HasValue)

                {

                    legalsManager = new DocumentLegalsManager(_model.DocumentId.Value);

                    grdLegals.DataSource = legalsManager.Details;

                    return;

                }



            }

            else

            {

                legalsManager.Refresh();

            }



            if (legalsManager == null)

                return;



            grdLegals.BeginUpdate();

            grdLegals.DataSource = null;

            grdLegals.DataSource = legalsManager.Details;

            grdLegals.EndUpdate();



        }

Stack Trace:

at System.ThrowHelper.ThrowArgumentOutOfRangeException()
at Telerik.WinControls.Data.RadDataView`1.SyncCurrent(TDataItem item)
at Telerik.WinControls.Data.RadDataView`1.RebuildData(Boolean notify)
at Telerik.WinControls.Data.RadDataView`1.RefreshOverride()
at Telerik.WinControls.Data.RadDataView`1.ProcessCollectionChanged(NotifyCollectionChangedEventArgs args)
at Telerik.WinControls.Data.RadCollectionView`1.source_CollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
at Telerik.WinControls.Data.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
at Telerik.WinControls.Data.RadListSource`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
at Telerik.WinControls.Data.RadListSource`1.EndUpdate(Boolean notifyUpdates)
at Telerik.WinControls.UI.GridViewTemplate.EndUpdate(Boolean notify, DataViewChangedEventArgs e)
at Telerik.WinControls.UI.MasterGridViewTemplate.EndUpdate(Boolean notify, DataViewChangedEventArgs e)
at Telerik.WinControls.UI.GridViewTemplate.EndUpdate()
at Telerik.WinControls.UI.RadGridView.EndUpdate()
at DeedMagic.Modules.ucDataEntry.RefreshGrid()

It works fine if i add a row, it only happens when i try to delete one. I thought maybe it had to do with the selected rows, so i tried clearing them out but i still get the error. Any suggestions?

Thanks

GridView

answered on 29 Oct 2015

13 answers

408 views

[Solved] Encountered Package Load Failure Issue

Hi,

I noticed I have those package load failures repeated at least once during the loading of Visual Studio 2008. That's the first load after the installation of Q2 2012 release.

I'm not sure whether this is related. But I'm not sure what need to be done.

When I'm prompted for whether to disable loading of package, I just clicked No, so every time they will prompt me the same errors multiple times when I restart my Visual Studio 2008.

I also noticed that the Q2 release still crash Visual 2008 (even though it's not running) and require me to send crash reports to Microsoft. Maybe Telerik need to look into this (but I'm running an older version of OS, Windows XP SP3). I'm not sure whether the latest installers are compatible with Windows XP or not. Hopefully Telerik will solve this installer issues in the next release or minor release.

Thank you.

Regards,
Jenson

General Discussions

answered on 29 Oct 2015

2 answers

346 views

[Solved] Adding Tabs to collapsed Ribbonbar

I'm trying to programmatically add a tab to the Ribbonbar at runtime. It all works fine when the Ribbonbar is expanded. But when I add a tab to a collapsed Ribbonbar the new tab is not visible until I click the button to expand the Ribbonbar again. Here are the steps to reproduce:

1.Create a new Visual C# -> Telerik Windows Forms Application

2.Drag a RadRibbonBar control onto RadForm1

3.Create a single tab "First Tab" (otherwise you cannot collapse the ribbon)

4.Drag a button onto the form and add the following code to the click event handler:

RibbonTab tab = new RibbonTab("Test");

this.radRibbonBar1.CommandTabs.Add(tab);

tab.IsSelected = true;

5.You should end up with something like the attached png file.

6.Run the project and click the button. You should see the new tab is created and selected.

7.Close the project and run it again. This time collapse the ribbon before clicking the button. No new tab is visible on the ribbon. Even if you click on the [First Tab] to show the full ribbon.

8.Click the expand ribbon button on the right and the new tab will then appear.

I've tried adding lines like Application.DoEvents() or this.Refresh() or this.radRibbonBar1.Refresh() but it doesn't make a difference.

Any help would be much appreciated.

Thanks,

John

RibbonBar

answered on 29 Oct 2015

2 answers

182 views

[Solved] DisableHtmlRendering on a RadPageViewPage text

hi,

Is there a way to use html on the text on a RadPageViewPage (explorerBar mode).

I want the first part of the text in black,the end in red.

Thanks

PageView

answered on 28 Oct 2015

1 answer

1.0K+ views

Copy to clipboard (different thread)

Hello,

I open the window containing RadGridView as follows:

new System.Threading.Thread(delegate () {

FormReports FormReports = new FormReports();

FormReports.ShowDialog();

}).Start();

When trying to copy data from the grid (right click -> copy) error message pops up:

An unhandled exception of type 'System.Threading.ThreadStateException' occurred in System.Windows.Forms.dll

Additional information: Current thread must be set

to single thread apartment (STA) mode before OLE calls can be made. Ensure that your Main function has STAThreadAttribute marked on it.

In this case I can't avoid new thread when calling new form.

How to solve it?

new System.Threading.Thread(delegate () {

FormReports FormReports = new FormReports();

FormReports.ShowDialog();

}).Start();

GridView

answered on 28 Oct 2015

3 answers

129 views

aggregate gridview cells

Hi, I am currently using the trial version of Telerik Winform and I would like a code example on how to aggregate cells in my gridview with the following two examples.

Example1:

1997 a a

1997 b -> becomes -> 1997 b

1997 c c

Where 1997 becomes a vertical aggregate field.

Example2:

1997 1997 1997 -> 1997

a b c a b c

Where 1997 becomes a horizontal aggregate field

GridView

answered on 28 Oct 2015

1 answer

206 views

How to use webBrowserElement in a radListView?

// Use the following code can only show the Html file, how to display the web page? private void radListViewMarketBase_CellCreating(object sender, ListViewCellElementCreatingEventArgs e) { var cell = e.CellElement as DetailListViewDataCellElement; if (cell != null && cell.Data.Name == "SN") { e.CellElement = new CustomDetailListViewDataCellElement(cell.RowElement, e.CellElement.Data); } } public class CustomDetailListViewDataCellElement : DetailListViewDataCellElement { // private RadButtonElement _button; private RadWebBrowserElement webBrowserElement; public CustomDetailListViewDataCellElement(DetailListViewVisualItem owner, ListViewDetailColumn column) : base(owner, column) { } protected override void CreateChildElements() { base.CreateChildElements(); // this._button = new RadButtonElement(); // this.Children.Add(this._button); this.webBrowserElement = new RadWebBrowserElement { WebBrowserItem = { Url = new Uri(string.Format("http://www.abc.com.cn/include/map.shtml?d=10&code=000111")) }, }; this.Children.Add(this.webBrowserElement); } protected override Type ThemeEffectiveType { get { return typeof(DetailListViewHeaderCellElement); } } public override void Synchronize() { base.Synchronize(); this.Text = ""; // var rowView = this.Row.DataBoundItem as DataRowView; // if (rowView != null) // this._button.Text = rowView.Row["序号"].ToString(); // else // this._button.Text = @"222"; } public override bool IsCompatible(ListViewDetailColumn data, object context) { return data.Name == "SN" && base.IsCompatible(data, context); } }

ListView

answered on 28 Oct 2015