Questions on UI for WPF Forum

4 answers

500 views

Dispatcher process has been suspended, but messages are still being processed.

Hi,

We have an office word template project which opens up a wpf form when the user tries to launch it.

The WPF form has one or more telerik Richtextbox controls. When the user start typing inside the textbox they get the above error.
ie."The dispatcher process has been suspended,but messages are still being processed.".

Even though this error occurs more when user tries to type fast inside the textbox, there are cases this happened even otherwise.

There is no event in our code that gets fired on TextChanged or anything similar.

Has anyone else experienced this? Could someone help me to resolve this?

Many thanks,

Anu

RichTextBox

answered on 04 Nov 2013

1 answer

103 views

Scan content and insert Merge fields

I have a rich text document which I have gone through and put "<<" and ">>" around keywords that I want to have a Mail Merge fields. I have tired to put in the merge fields in the XAML, but does not work well. What is the best way to programatically search through the text of a RadDocument and replace some text with MailMerge fields.

RichTextBox

answered on 04 Nov 2013

11 answers

317 views

RadRibbonWindow IsWindowsThemeEnabled breaks with Q3 2013

Everything ran fine, then I updated to Q3 2013, did an update Wizard, ran my application and setting

static MainWindow()

{

RadRibbonWindow.IsWindowsThemeEnabled = false;

}

Renders my RadRibbonWindow as completely white now. Setting it to true, I can see everything as expected.

RibbonView and RibbonWindow

answered on 04 Nov 2013

1 answer

64 views

QueryableDataServiceCollectionView converting models to viewmodels as ItemsSource

Hi,

we would like to switch our DataGrid loading mechanism to use the QueryableDataServiceCollectionView (on top of DataServiceContext), to mainly take advantage of paging, maybe filtering.

However due to some rich functionality in the grid, we are wrapping each 'RowModel' (record) with a 'RowViewModel', supporting the functionality in the grid. So the collection we currently bind the DataGrid.ItemsSource is of type IEnumerable<RowViewModel> rather than IEnumerable<RowModel>. This is done simply by running something like PageViewModel.GridItemsSource = data.Select(m => new RowViewModel(m));

The question is how to achieve the same result with QueryableDataServiceCollectionView? The records loaded will obviously be of type RowModel, however we would like to 'convert' them to 'RowViewModel' instances and bind those to the grid.

Any ideas?

Stevo

DataServiceDataSource

answered on 04 Nov 2013

1 answer

191 views

RadDataForm and ComboBox problem

Hi!
We are amazed with your controls for WPF, specially with RadDataForm.
But, we have one problem.
We need ComboBoxField to choose which Company has produced the Product.
And it's working well, but when we add new product and click OK, a NullReferenceException pops out.
Our code:
Company.cs

class Company : IDataErrorInfo

{

public int _id;

public int id

{

get

{

return _id;

}

set

{

_id = value;

}

public string _name;

public string name

{

get

{

return _name;

}

set

{

_name= value;

}

public string Error

{

get;

set;

}

public string this[string columnName]

{

// . . .

}

public static void Add(Company ist)

{

// . . .

}

public static void Edit(Company ist)

{

// . . .

}

public static void Delete(Company ist)

{

// . . .

}

public static List<Company> Get()

{

// . . .

}

}

Product.cs

class Product: IDataErrorInfo

{

public int _id;

public int id

{

get

{

return _id;

}

set

{

_id = value;

}

public string _name;

public string name

{

get

{

return _name;

}

set

{

_name= value;

}

public Company _comp;

public Company comp

{

get

{

return _comp;

}

set

{

_comp= value;

}

public string Error

{

get;

set;

}

public string this[string columnName]

{

// . . .

}

public static void Add(Product ist)

{

// . . .

}

public static void Edit(Product ist)

{

// . . .

}

public static void Delete(Product ist)

{

// . . .

}

public static List<Product> Get()

{

// . . .

}

And our AutoGeneratingField event of RadDataForm:

private void DataForm1_AutoGeneratingField_1(object sender, Telerik.Windows.Controls.Data.DataForm.AutoGeneratingFieldEventArgs e)

{

if (e.PropertyName == "Error" || e.PropertyName == "id")

{

e.Cancel = true;

}

else if (e.PropertyName == "comp")

{

e.DataField = new DataFormComboBoxField()

{

ItemsSource = viewModel.companies,

DisplayMemberPath = "name",

SelectedValuePath = "id",

DataMemberBinding = new Binding("comp.id")

{

Mode = BindingMode.TwoWay

},

Label = "Company"

};

}

e.DataField.DataMemberBinding.ValidatesOnDataErrors = true;

e.DataField.DataMemberBinding.NotifyOnValidationError = true;

}

And once again, this is working OK, but when we proceed with adding new product, NullReferenceException pops out because Company property of Product for adding is null.
Where we sin?
P.S: Sorry for our terrible English, we're from Serbia, and we implemented all CRUD operations with RadDataForm events (EditEnded, AddedNewRecord...).
Thanks in advance!
DMSoft

DataForm

answered on 04 Nov 2013

6 answers

132 views

binding error on styled base on TreeListViewRow with binding template

Hello,

I tried to customize style TreeListViewRow to add behavior, but i met a problem to keep the default alternating row style (row white and grey)
Indeed, I Have the default alternating style in my RadTreeListView, but if I customize only the row style, I lost the alternating row style (all the row are white)
So I decide to customize also the alternating row style, based on the row style.

<Style

x:Key="rowStyle"

BasedOn="{StaticResource {x:Type telerik:TreeListViewRow}}"

TargetType="{x:Type telerik:TreeListViewRow}">

<Style.Setters>

<EventSetter

Event="MouseDoubleClick"

Handler="HandleRowDoubleClick" />

</Style.Setters>

</Style>

<Style

x:Key="alternateRowStyle"

BasedOn="{StaticResource rowStyle}"

TargetType="{x:Type telerik:TreeListViewRow}">

</Style>

But with this, I lost also the alternating row background color

I set the background color of the style with bind of the AlternateRowBackground of the control (to keep inheritance).

<Style

x:Key="alternateRowStyle"

BasedOn="{StaticResource rowStyle}"

TargetType="{x:Type telerik:TreeListViewRow}">

<Style.Setters>

<Setter

Property="Background"

Value="{Binding AlternateRowBackground, Source={RelativeSource TemplatedParent}}" />

</Style.Setters>

</Style>

With this, it's work, but I have binding error on each alternate line : BindingExpression path error: 'AlternateRowBackground' property not found on 'object' ''RelativeSource' (HashCode=46024298)'. BindingExpression:Path=AlternateRowBackground; DataItem='RelativeSource' (HashCode=46024298); target element is 'TreeListViewRow' (Name=''); target property is 'Background' (type 'Brush')

I undestand If the color work, it's because when binding fail, telerik engine seems to put the default value, because Value={Binding Foo or whatever produce the same result.

So I think it's because the AlternateRowBackground property isn't set in my RadTreeListView, I do this with yellow for test, but same error! (binding error, and the alternate background color is grey). I don't understand, can you explain this ?

Thanks,

Sincerly

Gourdon Julien

PS : sorry for my english, I'm french

TreeListView

answered on 04 Nov 2013

3 answers

97 views

Do not call EndEdit on leaving row

Hello,

how can I avoid that the EndEdit Method of my entity is raised when leaving/switching the row.
I changed the ActionOnLostFocus to "None", but this was not the solution.

Thank you,
Manuel

GridView

answered on 01 Nov 2013

1 answer

153 views

Connection template

Hi guys I'm trying to draw a diagram like this one: http://www.wu.ac.at/ic/erp/webtrainer/dwh_webtrainer/exercise/20/20d-l-1.gif

Actually the only thing I really can't figure out is how to customize the connection template in order to draw an orthogonal line on top of a link (see the connection from the grayed node to the "driver" node).

The presence (or absence) of the line should be driven by a property in my model (the entire diagram is data bound to a graph source).

Thank you

Diagram

answered on 01 Nov 2013

1 answer

150 views

ItemsOptionListType - Moved my Cheese

I just installed the latest version of WPF controls (2013.3.1016.40) and my TreeView no longer registers this property. Can you tell me what the new alternative is for this property? Thanks.

tv.ItemsOptionListType = OptionListType.CheckList;

TreeView

answered on 01 Nov 2013

1 answer

158 views

Gridview ViewModel Binding

Hello, I would like to bind the gridview to viewmodels. I was thinking I'd have a TableViewmodel, which contains a collection of ColumnViewmodels and RowViewmodels, and finally CelViewModels. How would I go about doing this?

Thanks,
Scott

GridView

answered on 01 Nov 2013