Questions on UI for WPF Forum

0 answers

169 views

How to bind List<string> as itemsource

I need to bind List<string> to a treeview, the string is cut by /，like "a/b/c/d" ,''a/b/e/f" ,"a/b/c/g" ,

Is any simple method to bind it without constructing a cascading object？

TreeView

asked on 08 Aug 2017

1 answer

695 views

RadGridView ItemsSource using DataTable

Hello Telerik,

I'm using a DataTable to set my RadGridView ItemsSource. My grid was set like this :

_Xaml

<telerik:RadGridView x:Name="gridSaisie" Grid.Row="1" HorizontalAlignment="Stretch" Margin="5" ShowGroupPanel="False" CanUserInsertRows="False" CanUserDeleteRows="False" CanUserReorderColumns="False" RowIndicatorVisibility="Collapsed" AutoGenerateColumns="False" ScrollViewer.VerticalScrollBarVisibility="Auto" ScrollViewer.HorizontalScrollBarVisibility="Auto" CellValidating="gridSaisie_CellValidating" CellEditEnded="gridSaisie_CellEditEnded" RowEditEnded="gridSaisie_RowEditEnded"/>

_C#

private void ConstructGrid()

{

//Création de la colonne de dates

GridViewDataColumn colonneDate = new GridViewDataColumn();

colonneDate.DataMemberBinding = new Binding("Date");

colonneDate.Header = "Jour";

colonneDate.UniqueName = "Jour";

colonneDate.DataFormatString = "{0: dd}";

colonneDate.IsReadOnly = true;

colonneDate.Width = 150;

colonneDate.IsSortable = false;

colonneDate.IsFilterable = false;

colonneDate.HeaderTextAlignment = TextAlignment.Center;

//colonneDate.DataType = typeof(DateTime);

this.gridSaisie.Columns.Add(colonneDate);

//Création dynamique des colonnes

foreach (Variable v in this.ViewModel.Variables)

{

GridViewDataColumn colonneVariable = new GridViewDataColumn();

var bindVariable = new Binding(string.Format("Variable_{0}", v.Id));

bindVariable.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;

bindVariable.StringFormat = "{0:F1}";

bindVariable.Mode = BindingMode.TwoWay;

colonneVariable.DataMemberBinding = bindVariable;

colonneVariable.Header = v.Code;

colonneVariable.UniqueName = string.Format("Variable_{0}", v.Id);

colonneVariable.IsReadOnly = false;

//colonneVariable.Width = ;

colonneVariable.IsSortable = false;

colonneVariable.IsFilterable = false;

colonneVariable.HeaderTextAlignment = TextAlignment.Center;

//colonneVariable.DataType = typeof(double);

this.gridSaisie.Columns.Add(colonneVariable);

}

private void LoadData(int idStation)

{

this.gridSaisie.ItemsSource = this

.ViewModel.Jours; //Its the DataTable

}

I have somes problems :

1) When I set DataType = typeof(...), the displayed values are empty.

2) StringFormat for the Date doesn't work.

3) When I start updating, the cell value is hidden (I think is linq to '4)')

3) I can't update values in the Grid. I found this topic : http://www.telerik.com/forums/updating-a-datatable-with-radgridview where is it explain that the update will be to do manually. So I didi it :

private void gridSaisie_CellEditEnded(object sender, GridViewCellEditEndedEventArgs e)

{

int numCol = e.Cell.Column.DisplayIndex;

int numRow = this.gridSaisie.Items.IndexOf(this.gridSaisie.SelectedItem);

var row = this.ViewModel.Jours.Rows[numRow];

row.BeginEdit();

var colonnes = row.ItemArray;

colonnes[numCol] = e.NewData.ToString();// Convert.ToDouble(e.NewData.ToString());

row.EndEdit();

row.AcceptChanges();

//this.gridSaisie.Rebind();

}

But there isn't changement.

Can you help me ?

Thank you.

GridView

answered on 07 Aug 2017

3 answers

222 views

Context menu on FilteringControl

Hello everyone.

Is it possible to add context menu (RadContextMenu or System.Windows.Controls.ContextMenu) to filtering control in RadGridView?

I need to implement copy and past functions on textboxes in the FilteringControl.

It is the sample where I try to do this ( https://drive.google.com/file/d/0B1j-40J5aVOfSEctRHdZYnh3RjA/view?usp=sharing ).
There are ContextMenu in UserControlWithMenu and in FilteringControlEx, but both of them doesn't appear on right mouse click.

GridView

answered on 07 Aug 2017

1 answer

205 views

Tooltip for 'Recurring task on single row'

When Mouse is on a recurring, it show tooltip.

However when case 'Recurring task on single row', it doesn't show tooltip.

How can I make it to show tooltip when 'Recurring task on single row'?

GanttView

answered on 07 Aug 2017

1 answer

97 views

New Row should be available when the gridview loaded.

Hi,

I want to show one empty row at the end of the RadGridview when it is loaded when the data is empty.How to achieve this.I tried like shown below but no use

if(collection.Count ==0)

{

var itemsView = (IEditableCollectionView)CollectionViewSource.GetDefaultView(SyncObjects);
itemsView.NewItemPlaceholderPosition = NewItemPlaceholderPosition.AtEnd;

}

Once after loaded user will add data using add button.Now the grid is appearing as shown in the image where only headers are coming and it is not appealing like grid.

I want one empty row once it is loaded when no data exist.How to achieve this.

GridView

answered on 04 Aug 2017

1 answer

255 views

CellEditTemplate Binding is not working

Hi I am having combobox in the GridViewData column and i am binding the ItemSource with one of the property present on the class binded to the radgridview itemsource collection.For example I binded radgridview with list of employees.Employee is a class and I binded the combobox itemsource with dependants property which is one of the property on the employee class.

But the combobox is not populating.DataContext of RadGridView is separate and it is another viewmodel class.

<telerik:GridViewDataColumn.CellEditTemplate>

<DataTemplate>

<telerik:RadComboBox x:Name="ComboBox" SelectedIndex="0" Height="20" Width="150"

ItemsSource="{Binding Items,RelativeSource={RelativeSource AncestorType=telerik:GridViewRow}}"

ItemTemplate="{StaticResource RadComboBoxItemTemplate}"

SelectionBoxTemplate="{StaticResource SelectionBoxTemplate}">

</telerik:RadComboBox>

</DataTemplate>

</telerik:GridViewDataColumn.CellEditTemplate>

GridView

answered on 04 Aug 2017

2 answers

240 views

Blank grid content when grouped

Hi,

I have a real simple grid prototype. Works fine until I group by a column. When any grouping applied the area below the header row is blank although the gridview seems to be resizing as expected. I think this is a rendering issue.

More details:

Windows 10 OS
VS2017
Dell PC
Latest Telerik, installed today (trial)

Images attached show the before and after. Notice that the size (border) of the grid changes as expected.

Code fragment:

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

<Grid.RowDefinitions>

<RowDefinition Height="Auto"/>

<RowDefinition Height="*"/>

</Grid.RowDefinitions>

<telerik:RadGridView Grid.Row="0" ItemsSource="{Binding Variables}" GroupRenderMode="Nested"

AutoExpandGroups="True" AutoGenerateColumns="False">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding Type}" Header="Type" IsGroupable="True"/>

<telerik:GridViewDataColumn DataMemberBinding="{Binding Name}" Header="Name" IsGroupable="False"/>

<telerik:GridViewDataColumn DataMemberBinding="{Binding Index}" Header="Index"/>

<telerik:GridViewDataColumn DataMemberBinding="{Binding BriefDescription}" Header="Description" IsGroupable="True"/>

</telerik:RadGridView.Columns>

<telerik:RadGridView.GroupDescriptors>

<telerik:GroupDescriptor Member="BriefDescription" SortDirection="Ascending" />

</telerik:RadGridView.GroupDescriptors>

</telerik:RadGridView>

</Grid>

Any ideas?

GridView

answered on 04 Aug 2017

0 answers

139 views

Catel and Raddocking

Hello,

I've implemented 2 years ago a CustomDockingPane to work with Catel MVVM pattern but reviewing the code looks like a ...hum... Code smell...

I was wondering if I'm the only one which use those 2 framework together or is there anyone who can share his implementation with me

I've asked in the past and also sent ticket to Telerik support but they don't know the Catel Framework so well...

so...anyone alive?

Thanks

Docking

asked on 03 Aug 2017

1 answer

106 views

Complex validation error content types on RadGridView

Hi,

As I would like to display rich, structured information with validation errors, in my application calls to INotifyDataErrorInfo.GetErrors don't return strings but complex objects. For example, there is a severity level that would need to affect the colors (from orange to darker red).

It easily works everywhere, except on the RadGridView.

I've been trying to replace the GridViewValidationToolTipTemplate with something that does not assume errors to be simple strings. I've tried setting the ToolTip.Content in other templates to Validation.Errors (the original errors) instead of Errors (which is a list of strings), but that just brings a list of duplicated entries at row level (GridViewRowTemplate), or no entry at all on cell level (GridViewCellTemplate).

Am I missing something? What do you suggest?

Thanks

GridView

answered on 03 Aug 2017

1 answer

88 views

KendoGrid MVC Filtering Problem

Hey

I have some problem with Kendo.Grid()

I wanna add filter for some column value then is NULL.

Code here:

x.Ajax().Read(r => r.Action("DataSource", "SRV_Service", new { area = "SRV" }))
.Filter(f => f.Add(s => s.PID).IsEqualTo((Guid?)null))

Datasource when i use null value filter.

https://resimyukle.xyz/resim/KU48JA

MVC Enums for filter operators

public enum FilterOperator
{
IsLessThan = 0,
IsLessThanOrEqualTo = 1,
IsEqualTo = 2,
IsNotEqualTo = 3,
IsGreaterThanOrEqualTo = 4,
IsGreaterThan = 5,
StartsWith = 6,
EndsWith = 7,
Contains = 8,
IsContainedIn = 9,
DoesNotContain = 10
}

And your "Operator used in FilterDescriptor" keys has IsNull operator
http://docs.telerik.com/aspnet-mvc/api/Kendo.Mvc/FilterOperator

How can i do append IsNull operator on Kendo.Mvc.FilterDescriptor ?

Please help me

GridView