Questions on UI for WPF Forum

1 answer

37 views

Change the theme of the RadCalendar inside the RadDatePicker and RadDateRangePicker

Is it possible to have the RadCalendar inside the RadDatePicker and RadDateRangePicker to have a different theme than the RadDatePicker and the RadDateRangePicker?

I tried setting this within the RadDatePicker control's xaml:

<telerik:RadDateTimePicker.CalendarStyle>
<Style TargetType="telerik:RadCalendar">
<Setter Property="telerik:StyleManager.Theme"
Value="Windows11" />
</Style>
</telerik:RadDateTimePicker.CalendarStyle>

...but it has no effect.

Calendar

DatePicker

answered on 12 Mar 2025

0 answers

59 views

If the Start and End Dates range are more than 1 month, the data is not exactly aligned with the Header dates after scrolling towards right

When Static header are enabled and few columns are fixed,
Scenario:

1.If the Start and End Dates range are more than 1 month, the data is not exactly aligned with the Header dates after scrolling towards right.

2.If filter is applied, then the footer is displayed at very bottom.

DataFilter

DatePicker

GridView

asked on 02 Jul 2024

1 answer

147 views

Change RadDateTimePicker colors

Hello,

How can I change the header button text color and the week number text color (see attachment)?

Kind regards

DatePicker

DateTimePicker

answered on 18 Mar 2024

1 answer

282 views

RadDatePicker Built-in clear button to remove the selected date.

I would like to know if the WPF RadDatePicker control offers a built-in clear button functionality to remove the selected date.

DatePicker

answered on 29 May 2023

0 answers

95 views

Error custom control from Telerik GridViewDataColumn for Date Filed Type Date

If I use directly the control Telerik GridViewDataColumn, define the column grid like a Date (DataType="{x:Type sys:DateTime}"), when I click on the filed visualize correctly the Calendar.

But if I use the custom control from GridViewDataColumn when I do click appare this error:

System.InvalidCastException: Impossibile eseguire il cast di oggetti di tipo 'Telerik.Windows.Controls.RadDatePicker' sul tipo 'System.Windows.Controls.TextBox'.

Can you help me to resolve the problem?
Thank You.

DatePicker

GridView

asked on 23 Dec 2022

2 answers

138 views

Update Tasks in GanttChart

Hello,

I want to know if its possible to update Gantt Tasks when you change a Start Date or End Date from the Grid View part. For example, if I delay Proptotype Task, all the task behind should be delayed the same time as Prototype.

answered on 01 Jun 2022

1 answer

120 views

RadDateTimePicker - How to change the clock to RadTimeSpanPicker?

Hi,

I used RadTimeSpanPicker, but I got a situation where I also needed a date.

So I want to use RadDateTimePicker as in the picture,

But with the RadTimeSpanPicker clock and not with the clock that RadDateTimePicker has.

I would be happy to help if this can be done and how

Thank you.

answered on 21 Jan 2022

1 answer

244 views

How to change date time format throughout application?

I want to change DateTime.Now format like MM/dd/yyyy throughout application. so please help me out.

Thanks & Regards

Murugan M

DatePicker

DateTimePicker

answered on 15 Oct 2021

1 answer

125 views

The date part of RadDatePicker is still, i can not choose the right date.

I edited the template of RadDatePicker, when i click the left and right button to change the month, the month component of date number is totally still, won't change by different month.

I found if DayButtonStyle part is deleted, then nothing wrong. But I need to change DayButtonStyle, is there any solution?

                    <telerik:RadDatePicker Style="{DynamicResource RadDatePickerStyle1}" IsEnabled="True" IsReadOnly="False" Margin="2 0"/>

<Setter Property="DayButtonStyle">
                            <Setter.Value>
                                <Style TargetType="{x:Type Calendar:CalendarButton}">
                                    <Setter Property="FontFamily" Value="Microsoft YaHei UI"/>
                                    <Setter Property="FontSize" Value="12"/>
                                    <Setter Property="Foreground" Value="{DynamicResource BasicFont}"/>
                                    <Setter Property="BorderThickness" Value="1"/>
                                    <Setter Property="HorizontalContentAlignment" Value="Center"/>
                                    <Setter Property="VerticalContentAlignment" Value="Center"/>
                                    <Setter Property="MinWidth" Value="24"/>
                                    <Setter Property="MinHeight" Value="24"/>
                                    <Setter Property="FontWeight" Value="Normal"/>
                                    <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
                                    <Setter Property="Template">
                                        <Setter.Value>
                                            <ControlTemplate TargetType="{x:Type Calendar:CalendarButton}">
                                                <Grid x:Name="LayoutRoot" Background="Transparent">
                                                    <Border x:Name="BorderVisual" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" CornerRadius="10" Margin="1"/>
                                                    <ContentControl x:Name="Content" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}" Foreground="{TemplateBinding Foreground}" FontSize="{TemplateBinding FontSize}" FontFamily="{TemplateBinding FontFamily}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" IsTabStop="False" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                                                </Grid>
                                                <ControlTemplate.Triggers>
                                                    <Trigger Property="IsFromCurrentView" Value="False">
                                                        <Setter Property="Opacity" TargetName="Content" Value="0.6"/>
                                                    </Trigger>
                                                    <Trigger Property="IsKeyboardFocusWithin" Value="True">
                                                        <Setter Property="BorderBrush" TargetName="BorderVisual" Value="{DynamicResource BrightColor}"/>
                                                        <Setter Property="BorderThickness" TargetName="BorderVisual" Value="1"/>
                                                    </Trigger>
                                                    <Trigger Property="IsMouseOver" Value="True">
                                                        <Setter Property="Background" TargetName="BorderVisual" Value="{DynamicResource BrightColor}"/>
                                                        <Setter Property="BorderBrush" TargetName="BorderVisual" Value="{DynamicResource BrightColor}"/>
                                                        <Setter Property="Foreground" Value="White"/>
                                                    </Trigger>
                                                    <Trigger Property="IsSelected" Value="True">
                                                        <Setter Property="Background" TargetName="BorderVisual" Value="{DynamicResource BrightColor}"/>
                                                        <Setter Property="BorderBrush" TargetName="BorderVisual" Value="{DynamicResource BrightColor}"/>
                                                        <Setter Property="Foreground" Value="White"/>
                                                    </Trigger>
                                                    <Trigger Property="IsEnabled" Value="False">
                                                        <Setter Property="Opacity" TargetName="Content" Value="0.6"/>
                                                    </Trigger>
                                                    <Trigger Property="ButtonType" Value="TodayDate">
                                                        <Setter Property="BorderBrush" TargetName="BorderVisual" Value="Gray"/>
                                                        <Setter Property="Foreground" Value="{DynamicResource BasicFont}"/>
                                                        <Setter Property="FontWeight" TargetName="Content" Value="Bold"/>
                                                    </Trigger>
                                                    <MultiTrigger>
                                                        <MultiTrigger.Conditions>
                                                            <Condition Property="IsEnabled" Value="False"/>
                                                            <Condition Property="IsMouseOver" Value="True"/>
                                                        </MultiTrigger.Conditions>
                                                        <Setter Property="Foreground" TargetName="Content" Value="White"/>
                                                    </MultiTrigger>
                                                    <MultiTrigger>
                                                        <MultiTrigger.Conditions>
                                                            <Condition Property="IsFromCurrentView" Value="False"/>
                                                            <Condition Property="IsMouseOver" Value="True"/>
                                                        </MultiTrigger.Conditions>
                                                        <Setter Property="Opacity" TargetName="Content" Value="1"/>
                                                    </MultiTrigger>
                                                    <MultiTrigger>
                                                        <MultiTrigger.Conditions>
                                                            <Condition Property="ButtonType" Value="TodayDate"/>
                                                            <Condition Property="IsMouseOver" Value="True"/>
                                                        </MultiTrigger.Conditions>
                                                        <Setter Property="Foreground" TargetName="Content" Value="White"/>
                                                        <Setter Property="Background" TargetName="BorderVisual" Value="{DynamicResource BrightColor}"/>
                                                        <Setter Property="BorderBrush" TargetName="BorderVisual" Value="{DynamicResource BrightColor}"/>
                                                    </MultiTrigger>
                                                    <MultiTrigger>
                                                        <MultiTrigger.Conditions>
                                                            <Condition Property="ButtonType" Value="TodayDate"/>
                                                            <Condition Property="IsSelected" Value="True"/>
                                                        </MultiTrigger.Conditions>
                                                        <Setter Property="Background" TargetName="BorderVisual" Value="{DynamicResource BrightColor}"/>
                                                        <Setter Property="BorderBrush" TargetName="BorderVisual" Value="{DynamicResource BrightColor}"/>
                                                        <Setter Property="Foreground" Value="White"/>
                                                    </MultiTrigger>
                                                    <Trigger Property="ButtonType" Value="WeekNumber">
                                                        <Setter Property="Foreground" TargetName="Content" Value="{DynamicResource BasicFont}"/>
                                                        <Setter Property="Opacity" TargetName="Content" Value="0.2"/>
                                                        <Setter Property="Visibility" TargetName="BorderVisual" Value="Collapsed"/>
                                                    </Trigger>
                                                    <Trigger Property="ButtonType" Value="WeekName">
                                                        <Setter Property="Foreground" TargetName="Content" Value="{DynamicResource BrightColor}"/>
                                                        <Setter Property="Visibility" TargetName="BorderVisual" Value="Collapsed"/>
                                                    </Trigger>
                                                </ControlTemplate.Triggers>
                                            </ControlTemplate>
                                        </Setter.Value>
                                    </Setter>
                                </Style>
                            </Setter.Value>
                        </Setter>

I can't pick the rignt date. T - T

DatePicker

answered on 28 Sep 2021

0 answers

247 views

DisplayDateStart is not working as expected

Hello,

I have some troubles for getting the RadDatePicker working as expected, while using the propertiy 'DisplayDateStart'. Here my code:

At the start, when I select a date from the first RadDatePicker (valid from), the other one is working correctly (see the ok.png). But if I choose another date (minor to the previous one) some date are still greyed out on the second control (Valid To, see the not_ok.png --> the date 1,2,3,4,5 cannot be selected). I'm not able to reproduce the same error on the other side, changing the valid to control.

Edit:

I found that these controls inherit implicity from a style that has:

where MinimunAllowedData is equal to <system:DateTime x:Key="MinimumAllowedDate">1/1/1900</system:DateTime>

Removing the SelectableDateStart solve the issue. Still not sure why is this behavior happening?

If I change the control in this way