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UI for Xamarin Forum
1 answer
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Not able to apply DarkTheme colors in RadComboBox in Xamarin Android. Please help
Didi
Telerik team
 answered on 23 Jan 2024
1 answer
254 views

I want to perform some operation when the RadComboBox, RadTimePicker and RadDatePicker is focused or tapped. But even if I attach these events, they are not triggered.

Is there a way to do so. Kindly help.

Didi
Telerik team
 answered on 03 Nov 2022
1 answer
76 views

When I tap on the RadComboBox arrow in listview it gives the below exception. Kindly help

event registration is overwriting existing delegate. either just use events or your own delegate: xamarin.forms.platform.ios.listviewrenderer+listviewdatasource uikit.uiscrollview+_uiscrollviewdelegate

Didi
Telerik team
 answered on 10 Oct 2022
1 answer
142 views

Hello

In iOS - this is how the combobox displays. Does anyone know what resources need to be placed and where for RadCombobox to display properly in iOS?

Thanks.

Didi
Telerik team
 updated answer on 20 Jan 2022
0 answers
92 views
The display box and the drop-down box in the combox are a bit far apart, how to adjust the distance between them
guo
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Iron
 asked on 20 Aug 2021
1 answer
149 views

Hi support,

We would like to create a response drop down where we allow users to search for an item in the list. The drop down is bind to an observable collection in the VM called Response. Please see the definition of the combo box Response below.  

It seems to be working fine. User is able to search and select an item and the selected item is bound to ResponseSelected as specified. The only problem we are having is when the user clicks on the control but did not select an item and clicks on another combo box with similar definitions (see Employees combo box below). The application hangs and it looks like it went into an infinite loop. This 'hanging' issue also appears if you keep clicking on the combo box (either Response or Employees) multiple times.

If we change IsEditable in the combo box definitions to False on both combo boxes, the hanging issue goes away. Are we doing something wrong? Please help.

<telerikInput:RadComboBox Grid.Row="0" Grid.Column="0"
                                          ItemsSource="{Binding Response}" DropDownBackgroundColor="White"
                                          DisplayMemberPath="Description"
                                          TextColor="{StaticResource SilverTextColor}"                        
                                          SearchTextPath="Description"
                                          SearchMode="Contains"
                                          Placeholder="select a response..."
                                          PlaceholderColor="White"
                                          FontSize="12"
                                          SelectionMode="Single"
                                          HorizontalOptions="FillAndExpand"
                                          Margin="10,5,10,0"
                                          SelectedItem="{Binding ResponseSelected, Mode=TwoWay}"
                                          HighlightTextColor="DarkOrange"
                                          IsDropDownClosedOnSelection="True"
                                          IsEditable="True">
                                        <telerikInput:RadComboBox.SelectedItemTemplate>
                                            <DataTemplate>
                                                <StackLayout BackgroundColor="White">
                                                    <Label Text="{Binding Description}" Style="{StaticResource labelStyle}" Margin="5,5,0,5" TextColor="Black" />
                                                </StackLayout>
                                            </DataTemplate>
                                        </telerikInput:RadComboBox.SelectedItemTemplate>

                                    </telerikInput:RadComboBox>

 

   <telerikInput:RadComboBox ItemsSource="{Binding Employees}" DropDownBackgroundColor="White"
                                          DisplayMemberPath="FullName"
                                          TextColor="{StaticResource SilverTextColor}"                        
                                          SearchTextPath="FullName"
                                          SearchMode="Contains"
                                          Placeholder="select an employee..."
                                          PlaceholderColor="White"
                                          FontSize="12"
                                          SelectionMode="Single"
                                          Margin="0,0,10,0" 
                                          HorizontalOptions="FillAndExpand"
                                          SelectedItem="{Binding EmployeeSelected, Mode=TwoWay}"
                                          HighlightTextColor="DarkOrange"
                                          IsDropDownClosedOnSelection="True"
                                          IsEditable="True">
                                        <telerikInput:RadComboBox.SelectedItemTemplate>
                                            <DataTemplate>
                                                <StackLayout BackgroundColor="White">
                                                    <Label Text="{Binding FullName}" Style="{StaticResource labelStyle}" Margin="5,5,0,5" TextColor="Black" />
                                                </StackLayout>
                                            </DataTemplate>
                                        </telerikInput:RadComboBox.SelectedItemTemplate>

                                    </telerikInput:RadComboBox>
Didi
Telerik team
 updated answer on 15 Jul 2021
3 answers
262 views

Hi,

When a CombBox is placed next to a vertically centered label the text in the CombBox does not align vertically which produces a bad look.

The TimePicker by comparison looks good. Also the left alignment of the text in the TimePicker also looks better.

Can the CombBox be reworked to center the text and have a more consistent layout with other controls?

Regards

Anthony

Didi
Telerik team
 answered on 13 Apr 2021
1 answer
528 views

Hello!
I have a popu that has a contentview with a radcombobox.
When I want to open the combobox to show the elements my application crashes with the following exception:

"Android.Views.WindowManagerBadTokenException: 'Unable to add window -- token android.view.ViewRootImpl$W@c8be37d is not valid; is your activity running?'"

What is wrong here?

Best regards,
Nico

Yana
Telerik team
 answered on 11 Feb 2021
1 answer
461 views
Hello , i have this Rad combobox 

<telerikInput:RadComboBox
                                                  x:Name="PickerFilter"
                                                  DropDownBackgroundColor="{StaticResource AppMainColor}" 
                                                  IsClearButtonVisible="False" 
                                                  BorderColor="{StaticResource AppMainColor}" 
                                                  FocusedBorderColor="{StaticResource AppMainColor}" 
                                                  BackgroundColor="{StaticResource AppMainColor}" 
                                                  HorizontalOptions="CenterAndExpand"
                                                  VerticalOptions="Center" 
                                                  TextColor="#FFFFFF"
                                                  FontFamily="Roboto-Regular"
                                                  ItemsSource="{Binding FilterSource}"
                                                  SelectedItem="{Binding SelectedFilter,Mode=TwoWay}"  
                                                  FontSize="14" 
                                                  WidthRequest="220"
                                                  HeightRequest="42" 
                                                  CornerRadius="20">![](https://us.v-cdn.net/5019960/uploads/editor/6n/c3e070zodcqd.png "")

I want to change dropdown background from gray to blue and foreground from black to white (look to the screenshot)

Yana
Telerik team
 answered on 12 Jan 2021
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