Questions on UI for WPF Forum

2 answers

154 views

Hi,

I have a RadDataForm using Windows8Theme (although the theme doesn't seem to matter) with the following definition:

<telerik:RadDataForm x:Name="radUserForm" Grid.Row="0" AutoGenerateFields="False" ItemsSource="{Binding Path=UsersList}">

<telerik:RadDataForm.ReadOnlyTemplate>

<DataTemplate>

<StackPanel>

<telerik:DataFormDataField DataMemberBinding="{Binding AD_Username, Mode=OneWay}" Label="AD Username" IsEnabled="False" >

<telerik:DataFormDataField.Content>

<telerik:RadComboBox ItemsSource="{Binding Source={StaticResource ResourceKey=SysUsersList}}"

DisplayMemberPath="USER_NAME" SelectedValuePath="USER_ID" SelectedValue="{Binding AD_Username}"

IsEnabled="False"/>

</telerik:DataFormDataField.Content>

</telerik:DataFormDataField>

<telerik:DataFormDataField DataMemberBinding="{Binding Username, Mode=OneWay}" Label="Username" IsEnabled="False" />

<telerik:DataFormDataField DataMemberBinding="{Binding Email, Mode=OneWay}" Label="E-Mail" IsEnabled="False" />

<telerik:DataFormDataField DataMemberBinding="{Binding ProfileId, Mode=OneWay}" Label="Profile" IsEnabled="False">

<telerik:DataFormDataField.Content>

<telerik:RadComboBox ItemsSource="{Binding Source={StaticResource ResourceKey=ProfilesList}}"

DisplayMemberPath="ProfileName" SelectedValuePath="Id"

SelectedValue="{Binding ProfileId}" IsEnabled="False" />

</telerik:DataFormDataField.Content>

</telerik:DataFormDataField>

</StackPanel>

</DataTemplate>

</telerik:RadDataForm.ReadOnlyTemplate>

<telerik:RadDataForm.EditTemplate>

<DataTemplate>

<StackPanel>

<telerik:DataFormDataField DataMemberBinding="{Binding AD_Username, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Label="AD Username" IsEnabled="True" >

<telerik:DataFormDataField.Content>

<telerik:RadComboBox ItemsSource="{Binding Source={StaticResource ResourceKey=SysUsersList}}"

DisplayMemberPath="USER_NAME" SelectedValuePath="USER_ID" SelectedValue="{Binding AD_Username}"

IsEnabled="True"/>

</telerik:DataFormDataField.Content>

</telerik:DataFormDataField>

<telerik:DataFormDataField Label="Username" IsEnabled="True"

DataMemberBinding="{Binding Username, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, ValidatesOnNotifyDataErrors=True}" />

<telerik:DataFormDataField Label="E-Mail" IsEnabled="True"

DataMemberBinding="{Binding Email, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, ValidatesOnNotifyDataErrors=True}" />

<telerik:DataFormDataField DataMemberBinding="{Binding ProfileId, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged,

ValidatesOnNotifyDataErrors=True, NotifyOnValidationError=True}" Label="Profile" IsEnabled="True" >

<telerik:DataFormDataField.Content>

<telerik:RadComboBox ItemsSource="{Binding Source={StaticResource ResourceKey=ProfilesList}}"

DisplayMemberPath="ProfileName" SelectedValuePath="Id"

SelectedValue="{Binding ProfileId}" IsEnabled="True" />

</telerik:DataFormDataField.Content>

</telerik:DataFormDataField>

<telerik:DataFormDataField Label="Password">

<PasswordBox MaxLength="50" controls:PasswordBoxAssistant.BindPassword="True"

controls:PasswordBoxAssistant.BoundPassword="{Binding Path=PasswordString, Mode=TwoWay,

UpdateSourceTrigger=PropertyChanged, ValidatesOnNotifyDataErrors=True}" />

</telerik:DataFormDataField>

</StackPanel>

</DataTemplate>

</telerik:RadDataForm.EditTemplate>

<telerik:RadDataForm.NewItemTemplate>

<DataTemplate>

<StackPanel>

<telerik:DataFormDataField DataMemberBinding="{Binding AD_Username, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Label="AD Username" IsEnabled="True" >

<telerik:DataFormDataField.Content>

<telerik:RadComboBox ItemsSource="{Binding Source={StaticResource ResourceKey=SysUsersList}}"

DisplayMemberPath="USER_NAME" SelectedValuePath="USER_ID" SelectedValue="{Binding AD_Username}"

IsEnabled="True"/>

</telerik:DataFormDataField.Content>

</telerik:DataFormDataField>

<telerik:DataFormDataField Label="Username" IsEnabled="True"

DataMemberBinding="{Binding Username, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, ValidatesOnNotifyDataErrors=True}" />

<telerik:DataFormDataField Label="E-Mail" IsEnabled="True"

DataMemberBinding="{Binding Email, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, ValidatesOnNotifyDataErrors=True}" />

<telerik:DataFormDataField Label="Password">

<PasswordBox MaxLength="50" controls:PasswordBoxAssistant.BindPassword="True"

controls:PasswordBoxAssistant.BoundPassword="{Binding Path=PasswordString, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged,

ValidatesOnNotifyDataErrors=True, NotifyOnValidationError=True}" />

</telerik:DataFormDataField>

<telerik:DataFormDataField DataMemberBinding="{Binding ProfileId, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged,

ValidatesOnNotifyDataErrors=True, NotifyOnValidationError=True}"

Label="Profile" IsEnabled="True" >

<telerik:DataFormDataField.Content>

<telerik:RadComboBox ItemsSource="{Binding Source={StaticResource ResourceKey=ProfilesList}}"

DisplayMemberPath="ProfileName" SelectedValuePath="Id"

SelectedValue="{Binding ProfileId}" IsEnabled="True" />

</telerik:DataFormDataField.Content>

</telerik:DataFormDataField>

</StackPanel>

</DataTemplate>

</telerik:RadDataForm.NewItemTemplate>

</telerik:RadDataForm>

The result is the attached image. Notice how username and e-mail fields are of a different size than the other field.

Could you kindly shed some light to this?

Regards,
Daryl

DataForm

answered on 16 Jan 2015

2 answers

183 views

Nested GridViews double click issue

Hi,
I am having an interesting issue with nested GridViews using row details.
I need to be able to double click on rows in both the child and parent GridView and handle them differently.
But there seems to be an odd behavior where when I double click on the child row the MouseDoubleClickEvent gets raised on the child row first, then a different MouseDoubleClickEvent gets raised on the parent row. Event if I set the first event to being handled a separate event is raised on the parent row.
The event handlers are being added on the RowLoaded event for both the child and parent GridViews.

Kind Regards,

Ryan

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answered on 16 Jan 2015

3 answers

163 views

UpdateAllFields and custom fields

Hi

I've noticed that in 2014.3.1021 there have been some performance enhancements to UpdateAllFields. I'm not entirely sure what they are, but if I was to guess I'd say the document is no longer being layed out, mesaured and arranged after each field update.

This has, sadly, broken one of my custom fields.

I have a sort-of-cross reference field - it returns the page number of a custom AnnotationRangeStart. It does this in basically the same way as PageField.

Following the update to this version, the page number is always returned as '1' during UpdateAllFields. This seems to be because the layout only reports a single SectionLayoutBox in the DocumentLayoutBox.

I see from the PageField source two internal virtual methods that you use to workaround this issue: SaveState and RestoreState. As these are internal and not protected internal, I can't do the same.

My current workaround is to run Document.UpdateLayout() while this field is updating, which isn't ideal. Do you have any better ideas, or would you consider changing the accessibility of these internal state management methods?

RichTextBox

answered on 15 Jan 2015

1 answer

121 views

RadGridView.Items.RemoveAt(0); Does not work

Hi,
i can not remove first record in radgridview with RadGridView.Items.RemoveAt(0);
help me please , tanks

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answered on 15 Jan 2015

1 answer

158 views

Custom GridViewGroupRow

Quick question.

How do I replace the standard GridViewGroupRow with a custom derived class?

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answered on 15 Jan 2015

1 answer

140 views

deactivate milestone in ganttView

Hello,

In my project, I need to show a gantview which the user can modify tasks (duration, start, end), with field or with the behavior of the component (drag and drop). The problem is when the user put a start equal to the end for a task, these task is transform to milestone, with a different style and different behavior(including the deactivation of expansion of the task by left or right), which can disrupt the user. How can I keep the style/behavior of the task even start and end of the task is equal ? (it's not important if the tasks have a minimum size)

Thanks for Your Help

Julien

GanttView

answered on 15 Jan 2015

3 answers

284 views

Slow ItemsSource and DataView assignment

Hi,
We have an usercontrol that it used to generate several different grids in a same window.
We noticed that when we have 2 or more grids in a window, the load time begins grow and the performance drops.

Our control uses a DataTable to generate the data because each grid could have different number of columns, here is the way we make the assignment:

dataGrid.ItemsSource = data.DefaultView;

Our problem its related with this line, because this operation its taking between 150 and 200 milliseconds, that seems good for a single grid, but when we have several of this it could take more than a second or two to load a window, which is not acceptable for our customer.

It's there a way to improve this?

Just in case, we are taking in care your tips and tricks help topic
We are using the 2011 Q3 telerik version.

Thanks!

GridView

answered on 15 Jan 2015

1 answer

236 views

Grid Data disappears upon column header sort

Ok, I'm troubleshooting an issue in our app. We've got several RadGridViews, but in this one particular view, when you click on any column header to sort the grid, all of the grid data disappers. the data remains invisible if the column state is ascending or descending, but reappears if you toggle the column back to no sort.

Obviously we are doing something wrong in this specific RadGrid. I've tried to copy what is going on in our other grid views but I haven't figured out the difference yet. I figure I can't be the first person to have seen this behavior, so if someone else has seen this can they point me in the right direction towards fixing this problem? Thanks!

GridView

answered on 15 Jan 2015

13 answers

1.1K+ views

[Solved] Bring the selected Item into View

Hi.
I Have a RadGridView with a vertical scrollbar.
Is there a possibility to bring a certain Item into view.
I have tried Selected and Current however, the scrollbar remains unchanged.
Ideally I need something like:

    
            var newItemInMyList = GetNewItem();  
        
            this.ItemsSource.Add(newItemInMyList);  
        
            this.SelectedItem = newItemInMyList;  
        
            this.CurrentItem = newItemInMyList;  
        
            this.radGridView1.BringIntoView(newItemInMyList);

However if that is not possibile I would settle with bringing the scrollbar to the bottom of the Grid. (For the new Item woll most likely be added at the end of the list...)

Yours,
Nils

GridView

answered on 15 Jan 2015

2 answers

589 views

Mouse Over for Grid columns

How can i change the mouse over and selected (color after you click on a column) color for the GridView columns. I am using this to change the default color

<Style TargetType="{x:Type telerik:GridViewHeaderCell}" >
<Setter Property="FontFamily" Value="Verdana"/>
<Setter Property="FontSize" Value="12"/>
<Setter Property="BorderThickness" Value=".2"/>
<Setter Property="Background" Value="#FF8CC63F"/>
<Setter Property="Foreground" Value="Black"/>
<Setter Property="BorderBrush" Value="#FF8CC63F"/>
<Setter Property="FontWeight" Value="Bold"/>
</Style>

<Style TargetType="telerik:GridViewHeaderRow" >
<Setter Property="Background" Value="#FF8CC63F" />
</Style>

GridView

answered on 15 Jan 2015