Questions on UI for WPF Forum

5 answers

1.4K+ views

Applying filtering in RadGridView programmatically

What I try to achieve is to apply a filter to my RadGridView whenever user checks / unchecks a checkbox (pretty straightforward, right?). My code works fine when I set the AutoGenerateColumns flag of my gridview to True, but does nothing when I switch the flag to False (the IsActive flag of my ColumnFilterDescriptor never changes to True). I need to apply a specific template to my columns so the AutoGenerateColumns flag has to be False. Both of the columns I try to filter have the IsFilterable flag to True and are binded to a string (and not a custom defined class). Here is my RadGridView:

<Merging:RadGridViewWithSelectedItemsEditable

x:Name="SelectedUserAttributesGridView"

Grid.Row="0"

ItemsSource="{Binding MergeDetailsViewModel}"

AutoGenerateColumns="False"

VerticalAlignment="Top"

CanUserDeleteRows="False"

CanUserFreezeColumns="False"

SelectionMode="Extended"

ScrollMode="Deferred"

CanUserInsertRows="False"

CanUserReorderColumns="True"

CanUserResizeColumns="True"

CanUserSelect="False"

CanUserSortColumns="False"

ShowGroupPanel="False"

FrozenColumnsSplitterVisibility="Hidden"

GridLinesVisibility="None"

RowIndicatorVisibility="Collapsed"

IsEnabled="{Binding MergeDetailsEnabled}"

<Merging:RadGridViewWithSelectedItemsEditable.Columns>

<telerik:GridViewColumn Header="Well">

<telerik:GridViewColumn.CellTemplate>

<DataTemplate>

<TextBlock VerticalAlignment="Center" Margin="3,0,3,0" Text="{Binding WellName}" />

</DataTemplate>

</telerik:GridViewColumn.CellTemplate>

</telerik:GridViewColumn>

<telerik:GridViewColumn Header="UWI">

<telerik:GridViewColumn.CellTemplate>

<DataTemplate>

<TextBlock VerticalAlignment="Center" Margin="3,0,3,0" Text="{Binding UWI}" />

</DataTemplate>

</telerik:GridViewColumn.CellTemplate>

</telerik:GridViewColumn>

<telerik:GridViewColumn Header="{Binding SelectedAttributes[0].Name}" IsFilterable="True">

<telerik:GridViewColumn.CellTemplate>

<DataTemplate>

<TextBlock VerticalAlignment="Center" Margin="3,0,3,0" Text="{Binding FirstSelectedAttributeValue}" />

</DataTemplate>

</telerik:GridViewColumn.CellTemplate>

</telerik:GridViewColumn>

<telerik:GridViewColumn Header="{Binding SelectedAttributes[1].Name}" IsFilterable="True">

<telerik:GridViewColumn.CellTemplate>

<DataTemplate>

<TextBlock VerticalAlignment="Center" Margin="3,0,3,0" Text="{Binding SecondSelectedAttributeValue}" />

</DataTemplate>

</telerik:GridViewColumn.CellTemplate>

</telerik:GridViewColumn>

<telerik:GridViewColumn Header="Preview">

<telerik:GridViewColumn.CellTemplate>

<DataTemplate>

<TextBlock VerticalAlignment="Center" Margin="3,0,3,0" Text="{Binding Preview}" />

</DataTemplate>

</telerik:GridViewColumn.CellTemplate>

</telerik:GridViewColumn>

</Merging:RadGridViewWithSelectedItemsEditable.Columns>

</Merging:RadGridViewWithSelectedItemsEditable>

where FirstSelectedAttributeValue and SecondSelectedAttributeValue are both string properties of my class Well, and MergeDetailsViewModel an ObservableCollection<Well>.

Here is the code of the event handler for the checkbox that applies the filter:

private void CheckBoxClicked(object sender, RoutedEventArgs e)

{

if (ShowHideNullValuesButton.IsChecked != null && (bool)ShowHideNullValuesButton.IsChecked)

{

ApplyNonNullFilter(2);

ApplyNonNullFilter(3);

}

else

SelectedUserAttributesGridView.FilterDescriptors.Clear();

}

private void ApplyNonNullFilter(int columnIndex)

{

Telerik.Windows.Controls.GridViewColumn attributeValueColumn =

SelectedUserAttributesGridView.Columns[columnIndex];

IColumnFilterDescriptor attributeValueColumnFilter =

attributeValueColumn.ColumnFilterDescriptor;

attributeValueColumnFilter.SuspendNotifications();

attributeValueColumnFilter.FieldFilter.Filter1.Operator = FilterOperator.IsNotEqualTo;

attributeValueColumnFilter.FieldFilter.Filter1.Value = "NaN";

attributeValueColumnFilter.FieldFilter.Filter1.IsCaseSensitive = true;

attributeValueColumnFilter.ResumeNotifications();

}

What am I missing? Why filtering fails? Btw, I don't get any errors or exceptions when building and running the code. Thanks.

GridView

answered on 24 Oct 2014

5 answers

336 views

radmaskednumericinput two way binding doesn't work

Hi,

I have a radmaskednumericinput which is binded two way to a property, but there is a problem, when focusing the textbox, the value from code is overided with zero.

Thanks,
Rachel.

MaskedInput (Numeric, DateTime, Text, Currency)

answered on 24 Oct 2014

1 answer

142 views

RadTreeViewItem.IsDragAllowed

There is an IsDropAllowed property but no IsDragAllowed, have I missed it or an equivalent property or will I have to revert to a coding solution?

Thank you,

TreeView

answered on 24 Oct 2014

7 answers

288 views

Dynamic MajorTickInterval value

Hi,

I need DateTimeCategoricalAxis.MajorTickInterval's value is dynamic.

For examaple:
I have a list binding with a LineSeries. the list's count are dynamic.
When the number of list is extremely small or large, it will be necessary to set the value of MajorTickIntrval dynamic.
So, the DateTimeCategoricalAxis.MajorTickInterval's value need to changed with List.count.
like:

//Count: List's count

//MajorStepNum: How many labels are there below the X axis.

MajorTickInterval = Count / MajorStepNum > 1 ? Count / MajorStepNum + 1 : 1;

But the DateTimeCategoricalAxis.MajorTickInterval can not be Binding.(will thrown an exception)
So, have other way can be done this? (Except for the assignment MajorTickInterval)

Thanks

Chart

answered on 24 Oct 2014

1 answer

136 views

Possible to turn of resizing corners for certain shapes ?

I have implemented a custom resizing service as per your guide http://www.telerik.com/help/wpf/raddiagram-howto-customize-resizing.html. However i wonder if it is possible to disable the small corners so that users dont try and resize shapes that cant be resized.

Diagram

answered on 24 Oct 2014

3 answers

144 views

[Solved] GridView within a GridView sizing issues

I have a GridView (WPF 4.5, Q2 2013) that has another GridView in its RowDetailsTemplate. When I set the width to "*" on any columns of the second RadGridView, the DetailsPresenter gets extremely long (about 10000 px), even though I only have two columns that should fit on the screen.

I found a strange solution: in a new style for RadGridView, if I wrap the GridViewVirtualizingPanel in a Grid and apply it to "SecondGridView" in the RowDetailsTemplate, the columns size normally. I am hesitant to do this because I don't understand why it works; is there a better way?

Here is what I am working with, where the columns get really long:

<DataTemplate x:Key="MyRowDetailsTemplate" >

<Border >

<controls3:RadGridView x:Name="SecondGridView" ItemsSource="{Binding MoreItems}">

<controls3:RadGridView.Columns>

<controls3:GridViewDataColumn Width="*"

MinWidth="200"

Header="Name" />

<controls3:GridViewDataColumn Width="75"

MinWidth="75"

Header="Status" />

</controls3:RadGridView.Columns>

</controls3:RadGridView>

</Border>

</DataTemplate>

<controls:RadGridView Name="TemplateRoot"

ItemsSource="{Binding MyItems}"

RowDetailsTemplate="{DynamicResource MyRowDetailsTemplate}">

<controls:RadGridView.Columns>

<controls:GridViewDataColumn Width="*"

MinWidth="200"

Header="Name"/>

<controls:GridViewDataColumn Width="75"

MinWidth="75"

Header="Status"/>

</controls:RadGridView.Columns>

</controls:RadGridView>

GridView

answered on 24 Oct 2014

1 answer

315 views

End edit of current cell

Hello,

I have an application with a radspreadsheet and a button. When i click the button with the cell in edit mode (i have the cursor of the mouse inside it) i cant get the new value of the cell. Is there any way to end the edit mode of the current cell?.

When i write on C2 "1" ,exit the cell and click on save i get "1".

Then, when i write on C2 "2" , and click on save without exit the cell i still get "1" instead of "2".

Thanks!

Spreadsheet

answered on 24 Oct 2014

4 answers

378 views

How to set the color of the selected row in a RadGridView

Hi Telerik,

I have this RadGridView:

<telerik:RadGridView IsFilteringAllowed="False" BorderBrush="#9AB400" Name="gridView" Grid.Column="0" ItemsSource="{Binding ChamberMeasurements}" AutoGenerateColumns="True" Margin="120,10,12,0" VerticalAlignment="Top" ShowGroupPanel="False">

</telerik:RadGridView>

When i click a row in the table created by the RadGridView then the selected row is not highlighted and i don't understand why. Should i set the color of the selected row somehow?

The ChamberMeasurements property is of type DataTable.

Can you tell me if i am doing something wrong or missing something?

Best regards,
Jeppe

General Discussions

answered on 24 Oct 2014

3 answers

321 views

Need ArrowUp/Down Click Event

Hi everyone,

I'm using two Telerik NumericUpDown controllers (lets say A and B)

If A is edited B is set to 0

If B is edited A is set to B.Value * Variable

If I use only the ValueChanged event I'm not able to implement this.

Is it possible to capture arrowUp or arrowDown clik events?

Thanks everyone, I hope I made myself clear, sorry if not it's my first post here.

NumericUpDown

answered on 23 Oct 2014

3 answers

206 views

Custom View Definition

I want to implement the following features using the Schedule View, Is there an example that can help me.

- Display specific dates for a resource for ex (calendar should display 17th Oct, 1st Nov and 25 Nov)
- I also have to do that same for multiple resources for ex calendar should display (For resource 1 -- 17th Oct and 1st Nov) (For resource 2 -- 20 Dec)
- Want to display a custom range, the user will be able to say show me calendar for next 4,5,7,10 days or show me calendar from 17 - 22

I believe if there is way to do the first 2 i should be able to use that to implement the last feature.

Thanks
vikas

ScheduleView

answered on 23 Oct 2014