Questions on UI for WPF Forum

1 answer

105 views

GridView Asynchronous Sorting hides data

Hello everyone

I have a RadGridView whose DataLoadMode is set to Asynchronous, and I'm experiencing some trouble with sorting.

In my case the grid is filled with approx 14,000 elements, that can be represented by trips made by clients. Each client has a number, and has made several trips. The columns are, among others, the client number, and the destination of the trip.

Here are the steps that reproduce my problem :
1. I first select only one client number in the standard filtering from the client number column. The display is refreshed and only the trips of the selected client are displayed (~ 4-5 elements)
2. Now I click on header of destination column, normally causing the alphabetical sorting with respect to destination. But instead of this behaviour, the grid refreshes and no elements are shown.

I have put some breakpoints, and found out that the display is not in cause, as the grid.Items is simply set with an emply collection when I click on the column header.

The surprising thing is that it always worked correctly before, when I was using synchronous data load mode.

Am I the only one experiencing trouble with this feature ?

Thank's in advance for your time

Kind regards,
Olivier

GridView

answered on 21 Mar 2012

3 answers

307 views

Disable specific dates in the RadDatePicker

Hi,

I am creating a booking system and need to disable certain dates in the RadDatePicker if the products are not available on that day.
Is this possible with a RadDateTimePicker? I have read all the documentation and and the selectable range looks like it would work but I need disable multiple single days.

Thanks

DatePicker

answered on 21 Mar 2012

6 answers

80 views

GridViewBoundColumnBase.CanFilter() bug of the 2012.1 release?

Hi,

It seems a bug in the GridViewBoundColumnBase.CanFilter() of the 2012.1 release.

I'm binding my grid to a collection of ExpandoObjects, and I found that when I set grid.IsFilteringAllowed to true, the FilteringDropDown controls shows up on column headers, but they didn't go hidden when I set grid.IsFilteringAllowed to false.

By looking at the disassembled code, I found that GridViewBoundColumnBase.CanFilter() has been changed to this:

        public override bool CanFilter()
         {
             return (base.CanFilter() || (this.IsBoundToDynamicType() && (this.EffectiveFilteringType != null)));
         }

In my case base.CanFilter() is false and this.IsBoundToDynamicType() && (this.EffectiveFilteringType != null)) is always true, which means there's no way for me to simply toggle grid.IsFilteringAllowed to show/hide the filter control.

Jason

GridView

answered on 21 Mar 2012

0 answers

67 views

RadGridView to Excel

hi there,

i want to export data from radGridView to excel in wpf , how can i perform this functionality
plz give an example or demo with code because i am new to wpf

thanks
Regards

usman ilyas

GridView

asked on 21 Mar 2012

3 answers

176 views

Tileview : Issue with RadFluidContentControl and ItemsSource

Hello,

I have a problem with the tileview control.

I have a tileview in my page with RadFluidContentControl to have different view depends on the size :

<telerik:RadTileView IsItemsAnimationEnabled="False">

<telerik:RadTileViewItem>

<telerik:RadFluidContentControl

TransitionDuration="0"

State="Large"

SmallToNormalThreshold="400 400"

NormalToSmallThreshold="400 400"

NormalToLargeThreshold="600 600"

LargeToNormalThreshold="600 600">

<telerik:RadFluidContentControl.SmallContent>

<StackPanel x:Name="SmallContent">

<TextBlock Text="Small"/>

<TextBlock Text="{Binding MyList.Count}"/>

<ListBox ItemsSource="{Binding MyList, Mode=TwoWay}"/>

</StackPanel>

</telerik:RadFluidContentControl.SmallContent>

<telerik:RadFluidContentControl.Content>

<StackPanel x:Name="Content">

<TextBlock Text="Normal"/>

<TextBlock Text="{Binding MyList.Count}"/>

<ListBox ItemsSource="{Binding MyList, Mode=TwoWay}"/>

</StackPanel>

</telerik:RadFluidContentControl.Content>

<telerik:RadFluidContentControl.LargeContent>

<StackPanel x:Name="LargeContent">

<TextBlock Text="Large"/>

<TextBlock Text="{Binding MyList.Count}"/>

<ListBox ItemsSource="{Binding MyList, Mode=TwoWay}"/>

</StackPanel>

</telerik:RadFluidContentControl.LargeContent>

</telerik:RadFluidContentControl>

</telerik:RadTileViewItem>

</telerik:RadTileView>

In this sample this is the same content for Small, Normal and Large Content. It displays the number of item in a list and the content of the list.

MyList is just a List of String with 2 elements.

When I ran the application, only the listbox in the normal content displayed the 2 elements. In the small and large content the list was empty.

But in all contents (small, normal and large) the textblock displayed the correct number of elements in my list (2).

Do I something wrong ?

Thanks in advance for your answer.

Regards,

Patrick

TileView

answered on 21 Mar 2012

5 answers

268 views

Get property type of a property bound column

Hi,

I ran into the problem that I need to get access to the type of a property bound to a column. I need to acomplish this on the AutoGeneratingColumn event.

I've manage to do it with a common grid:

private void dtgRestuls_AutoGeneratingColumn(object sender, DataGridAutoGeneratingColumnEventArgs e)

{

var columnAttributes = ((PropertyDescriptor)e.PropertyDescriptor).Attributes.OfType<ColumnAttribute>();

if (columnAttributes.Count() == 0)

{

e.Cancel = true;

}

else

{

e.Cancel = !IsColumnMarkAsVisible(columnAttributes);

}

The problem is that DataGridAutoGeneratingColumnEventArgs exposes a PropertyDescriptor property, but GridViewAutoGeneratingColumnEventArgs don't.

Anyone got any idea of where to find it on GridViewAutoGeneratingColumnEventArgs, or maybe a workaround?

Thanks!

GridView

answered on 21 Mar 2012

2 answers

171 views

How to handle builds & hotfixes?

Hello, I've been tinkering with using the RadControls for WPF in my projects and am generally pleased with the toolkit. The hotfix situation is perplexing me though.

I noticed it pulls down updates automatically, and that the Telerik references in my project are pointing to one of various folders under, for example, C:\Users\James\AppData\Roaming\Telerik\Updates\RadControls_for_WPF40_2011_2_0920_Dev_hotfix\ ...

I like that it keeps my working project up-to-date with the latest builids. But this is making it difficult for me to set up a clean build environment.

If I want to mark my code as a certain "release", for example, and check everything into version control (I'm now using Mercurial), I like to include the 3rd-party libraries along with it. So that it can always be reproduced exactly as built. Normally I try to have all 3rd-party libraries within a subfolder in my development folder (which is C:\Apps), as for example: C:\Apps\VendorLibs\Telerik
That way, it is obvious where to add references from, and the version-control/build commands know where to get their stuff. Also, this makes it straightforward to set up a continuous-build facility on a separate box to detect checkins, run the build, run the unit-tests, and poke me as soon as I break something. Or, to create a virtual-machine (I'm using VMWare) of a fresh Windows environment, to test an installer on. Also, I develop on two boxes at the same time. With the C:\Apps folder synced between them (using a program similar to DropBox). This would work a lot better if Telerik's libraries were within that folder, instead of elsewhere on a totally different path.

So, my question is: Is there a way to configure the hotfix facility of Telerik's tools, such that instead of using those hotfix folders down in \Users\James\AppData\Roaming, which change periodically, to instead have them placed automatically within a single stable folder of my choosing?

Installer and Visual Studio Extensions

answered on 21 Mar 2012

10 answers

155 views

Footer Clipboard copy

Hi,

i cant copy the content from the footers into the clipboard. The footer row is always empty in clipboard!

ClipboardCopyMode is "All"

My Style:

<Style x:Key="DataFooter" TargetType="GridView:GridViewFooterCell">

<Setter Property="Content">

<Setter.Value>

<StackPanel>

<GridView:AggregateResultsList ItemsSource="{Binding}" VerticalAlignment="Center">

<ItemsControl.ItemTemplate>

<DataTemplate>

<StackPanel Orientation="Horizontal" VerticalAlignment="Center">

<TextBlock VerticalAlignment="Center" Text="{Binding Caption}" />

<TextBlock VerticalAlignment="Center" Text="{Binding FormattedValue}" />

</StackPanel>

</DataTemplate>

</ItemsControl.ItemTemplate>

<ItemsControl.ItemsPanel>

<ItemsPanelTemplate>

<StackPanel Orientation="Vertical" />

</ItemsPanelTemplate>

</ItemsControl.ItemsPanel>

</GridView:AggregateResultsList>

</StackPanel>

</Setter.Value>

</Setter>

</Style>

Regards,
Thomas

GridView

answered on 21 Mar 2012

1 answer

165 views

Data Form With Custom DataTemplate

Hi,

I have three classes Employee, EmployeeCollection and Address

I have set the datacontext to a EmployeeCollection this works ok until I get to the Address Field then i only get one textbox. I have tried to create a DataTemplate for Address but it doesn't seem to use the template I have created.

Thanks

David

public class Address

{

String _Street;

String _City;

String _Town;

String _County;

String _PostCode;

public String Street

{

get

{

return this._Street;

}

set

{

this._Street = value;

NotifyPropertyChanged(() => Street);

}

public String City

{

get

{

return this._City;

}

set

{

this._City = value;

NotifyPropertyChanged(() => City);

}

public String Town

{

get

{

return this._Town;

}

set

{

this._Town = value;

NotifyPropertyChanged(() => Town);

}

public String County

{

get

{

return this._County;

}

set

{

this._County = value;

NotifyPropertyChanged(() => County);

}

public String PostCode

{

get

{

return this._PostCode;

}

set

{

this._PostCode = value;

NotifyPropertyChanged(() => PostCode);

}

public Address()

{

}

public Address(String street, String city, String town, String county, String postCode)

{

this.Street = street;

this.City = city;

this.Town = town;

this.County = county;

this.PostCode = postCode;

}

#region PropertyNotify

[field: NonSerializedAttribute()]

public event PropertyChangedEventHandler PropertyChanged = delegate { };

public readonly Action<Action> _synchronousInvoker;

public Address(Action<Action> synchronousInvoker)

{

_synchronousInvoker = synchronousInvoker;

}

public void NotifyPropertyChanged<T>(Expression<Func<T>> expr)

{

var body = expr.Body as MemberExpression;

if (body != null)

{

try

{

if (_synchronousInvoker != null)

_synchronousInvoker(() => InvokePropertyChanged(expr));

else

InvokePropertyChanged(expr);

}

catch (Exception Ex)

{

if (Ex.Message == "Invoke or BeginInvoke cannot be called on a control until the window handle has been created.")

{

InvokePropertyChanged(expr);

}

private void InvokePropertyChanged<T>(Expression<Func<T>> expr)

{

var body = expr.Body as MemberExpression;

if (body != null)

{

if (PropertyChanged != null)

{

PropertyChanged(this, new PropertyChangedEventArgs(body.Member.Name));

}

#endregion

}

public class Employee : INotifyPropertyChanged

{

Int32 _EmployeeID;

String _FirstName;

String _SurName;

Location _DefaultStore;

float _Sallary;

float _HourlyRate;

EmployeeType _EmployeeType;

Address _Address;

public Int32 EmployeeID

{

get

{

return _EmployeeID;

}

set

{

_EmployeeID = value;

NotifyPropertyChanged(() => EmployeeID);

}

public String FirstName

{

get

{

return this._FirstName;

}

set

{

this._FirstName = value;

NotifyPropertyChanged(() => FirstName);

}

public String SurName

{

get

{

return this._SurName;

}

set

{

this._SurName = value;

NotifyPropertyChanged(() => SurName);

}

public Location DefaultStore

{

get

{

return this._DefaultStore;

}

set

{

this._DefaultStore = value;

NotifyPropertyChanged(() => DefaultStore);

}

public float Sallary

{

get

{

return this._Sallary;

}

set

{

this._Sallary = value;

NotifyPropertyChanged(() => Sallary);

}

public float HourlyRate

{

get

{

return this._HourlyRate;

}

set

{

this._HourlyRate = value;

NotifyPropertyChanged(() => HourlyRate);

}

public EmployeeType EmployeeType

{

get

{

return this._EmployeeType;

}

set

{

this._EmployeeType = value;

NotifyPropertyChanged(() => EmployeeType);

}

public Address Address

{

get

{

return _Address;

}

set

{

_Address = value;

NotifyPropertyChanged(() => Address);

}

public Employee()

{

}

public Employee(Int32 employeeID, String firstName, String surName, Location defaultStore, float sallary, float hourlyRate, EmployeeType employeeType, Address address)

{

this._EmployeeID = employeeID;

this._FirstName = firstName;

this._SurName = surName;

this._DefaultStore = defaultStore;

this._Sallary = sallary;

this._HourlyRate = hourlyRate;

this._EmployeeType = employeeType;

this._Address = address;

}

#region PropertyNotify

[field: NonSerializedAttribute()]

public event PropertyChangedEventHandler PropertyChanged = delegate { };

public readonly Action<Action> _synchronousInvoker;

public Employee(Action<Action> synchronousInvoker)

{

_synchronousInvoker = synchronousInvoker;

}

public void NotifyPropertyChanged<T>(Expression<Func<T>> expr)

{

var body = expr.Body as MemberExpression;

if (body != null)

{

try

{

if (_synchronousInvoker != null)

_synchronousInvoker(() => InvokePropertyChanged(expr));

else

InvokePropertyChanged(expr);

}

catch (Exception Ex)

{

if (Ex.Message == "Invoke or BeginInvoke cannot be called on a control until the window handle has been created.")

{

InvokePropertyChanged(expr);

}

private void InvokePropertyChanged<T>(Expression<Func<T>> expr)

{

var body = expr.Body as MemberExpression;

if (body != null)

{

if (PropertyChanged != null)

{

PropertyChanged(this, new PropertyChangedEventArgs(body.Member.Name));

}

#endregion

}

public class EmployeeCollection : ObservableCollection<Employee>

{

public EmployeeCollection()

{

}

DataForm

answered on 21 Mar 2012

3 answers

84 views

Grouping headers horizontaly

Hello,

I am using Telerik version 2011.2. In a lot of areas in the application I am writing I am using the RadGridView.
I would like to know if there is a way to have a "second header" above the regular headers.

Basically, I would like to be able to do something akin to the center and merge functions in excel, having the individual headers above the cells and another set of headers which can span more then one column above those.

I have a sample (352KB .jpg) but it will not upload.
Any ideas on how to accomplish this would be appreciated.
Thank you,

Eli

GridView

answered on 21 Mar 2012