Questions on UI for WPF Forum

1 answer

223 views

I am creating a collection of columns in the viewmodel and successfully adding the columns to the TreeListView from the code behind in an event in the viewmodel.

CodeBehind

private void Vm_OnCompletedEvent(object sender, EventArgs e)

{

try

{

tvData.Columns.Clear();

foreach (GridViewDataColumn oCol in vm.ColumnList)

{

this.tvData.Columns.Add(oCol);

}

tvData.Rebind();

}

catch (Exception ex)

{

MessageBox.Show(ex.Message);

}

The XAML in the View

<telerik:RadTreeListView x:Name="tvData"

Margin="1"

ItemsSource="{Binding TreeNodeDEList}"

SelectedItem="{Binding SelectedTreeNodeDE,Mode=TwoWay}"

AutoGenerateColumns="False"

AutoExpandItems="True"

IsFilteringAllowed="False"

IsReadOnly="True"

HierarchyIndent="8"

FrozenColumnCount="1"

RowStyleSelector="{StaticResource deRowSelector}"

RowIndicatorVisibility="Collapsed">

<telerik:RadTreeListView.ChildTableDefinitions>

<telerik:TreeListViewTableDefinition ItemsSource="{Binding ChildNodes}" />

</telerik:RadTreeListView.ChildTableDefinitions>

</telerik:RadTreeListView>

The ViewModel code to create the columns

private void CreateColumns()

{

try

{

string sUniqueName, sValuefield;

GridViewDataColumn oCol;

ColumnList = new List<GridViewDataColumn>();

oCol = new GridViewDataColumn();

oCol.HeaderCellStyle = HeaderStyle();

oCol.Width = 250;

oCol.Header = "Category/Line Item";

oCol.UniqueName = "Rootcol";

oCol.DataMemberBinding = new System.Windows.Data.Binding("NodeLabel");

oCol.HeaderTextAlignment = TextAlignment.Left;

oCol.TextAlignment = TextAlignment.Left;

ColumnList.Add(oCol);

int i = 1;

foreach (WeekNoDB oWk in lWeekNo)

{

sUniqueName = string.Format("CellLabel{0}", i.ToString().PadLeft(2, '0'));

sValuefield = string.Format("CellLabel{0}", i.ToString().PadLeft(2, '0'));

oCol = new GridViewDataColumn();

oCol.HeaderCellStyle = HeaderStyle();

oCol.Width = 40;

oCol.Header = string.Format("{0}/{1}", oWk.ToDate.DateTimeFromNull().Day, oWk.ToDate.DateTimeFromNull().Month);

oCol.UniqueName = sUniqueName;

oCol.DataMemberBinding = new System.Windows.Data.Binding(sValuefield);

oCol.HeaderTextAlignment = TextAlignment.Center;

oCol.TextAlignment = TextAlignment.Right;

ColumnList.Add(oCol);

i++;

}

if (this.OnCompletedEvent != null)

{

this.OnCompletedEvent(this, new EventArgs());

}

catch (Exception exc)

{

gUI.PopError(string.Format("{0}.{1}", this.GetType().Name, System.Reflection.MethodBase.GetCurrentMethod().Name), exc);

}

This works perfectly - ONCE

The second time i get the error

An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in Telerik.Windows.Controls.GridView.dll

Additional information: DataGrid_DisplayIndexOutOfRange

Astonishingly there is little response from Google, or my foo is not working. Any ideas how to fix this problem.

GridView

answered on 30 May 2017

1 answer

129 views

ReverseGeocode

Hi,

If I want to convert a location point to an address I have to call the ReverseGeocodeAsync() method of the BingGeocodeProvider and pass a ReverseGeocodeRequest to it. However in R2 2017 this classes are deleted. And I didn’t find this classes in BingRestMapRouting.

Could you please tell me how to implement that ReverseGeocode logic in new version of telerik(R2 2017).

This is blocking us and need immediate help.

Thanx

Map

answered on 29 May 2017

1 answer

146 views

Alert freezing on mouse hovering

Hello,

I've noticed that the alert "freezes" when hovering the mouse on it, so that it doesn't disappear, and its duration time is reset and start counting again after the mouse stops hover on it.

Can this behavior be controlled or cancelled?

DesktopAlert

answered on 29 May 2017

2 answers

259 views

Drag and detach a tab like IE does it?

Consider Internet Explorer 9.0 (and possibly other browsers too). When you start dragging a tab you get the possibility to detach it from the main window and move/drop it into what becomes a new main window.

Can this be done using RadTabControl?

TabControl

answered on 29 May 2017

1 answer

325 views

System.OutOfMemoryException when setting cell values

Hello,

I'm new to the SpreadSheet control, I have used the standard example WPF code to create it as a user control.

Then I use this control in a RadWindow, and I want to add the data from DataTable from a database table with 72 columns and 110000 rows.

I use a simple loop to do this, since I have understood that databinding is not possible with a datatable on the SpreadSheet control.

When I try to load the data I get this message System.OutOfMemoryException.

I have browsed these posts, and so I also limitted the number of visble rows and columns to 80 x 100 but without success.

Can anyone tell me how I can do this correctly?

Basically I already moved away from the RadGridView since the RadGridView can not save to a Xlsx anymore, and the files that are generated are either not recognized by excel, or take too long too open with Excel.

So if anyone can give me a good way to export preferably with an intermediate grid, or otherwise a datatable to Excel in a Fast way, that keeps all the correct data types, and opens fast in Excel that would also be very helpfull.

Thanks,

André

Spreadsheet

answered on 26 May 2017

1 answer

112 views

Automatic Hyphenation in RadRichTextBox

Is it possible to switch on automatic hyphenation in the RadRichTextBox, as we're migrating an application from MS Word to using this control embedded in the system, and the hyphenation changes the number of lines that the text takes up.

General Discussions

answered on 26 May 2017

3 answers

228 views

drag from a tree, drop only inside a dock panel

Hello Telerik,

I am implementing a feature which consists of a list of user controls that can be dragged to dock panels.

At the moment there are two feature I need to implement. I've described the first one here http://www.telerik.com/forums/remove-the-not-allowed-icon-on-drag

then I also need to prevent the drag & drop of an item of the tree to itself.

Basically I need to restrict the drag&drop from tree to dockpanels only.

I will attach a screen shot of what i wish to prevent and my source code below

XAML

<Window x:Class="DashboardGrid.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:local="clr-namespace:DashboardGrid"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

mc:Ignorable="d"

Title="MainWindow" Height="350" Width="525">

<Grid>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="3*" />

<ColumnDefinition Width="*" />

</Grid.ColumnDefinitions>

<Grid>

<Grid.ColumnDefinitions>

<ColumnDefinition />

</Grid.ColumnDefinitions>

<Grid.RowDefinitions>

<RowDefinition />

</Grid.RowDefinitions>

<telerik:RadDocking Grid.Row="0" Grid.Column="0" Drop="RadDocking_Drop" AllowDrop="True">

<telerik:RadSplitContainer >

<telerik:RadPaneGroup>

</telerik:RadPaneGroup>