Need to Remove Extra column header in Datagrid - WPF Discussion Boards

Re: search item on listview wpf

17-Jul-13 21:58

I think the issue is probably with item.Content, check the type it will not be what you are expecting.

Why are you manipulating the UI, you should be working with the underlying data so rather than iterating through the ListViewItems you should be working with the datatable and setting a field IsSelected which should be bound to the UI control.

Never underestimate the power of human stupidity
RAH

Richard Deeming18-Jul-13 1:22

Richard Deeming

18-Jul-13 1:22

dharmaa.m wrote:
Unable to cast object of type 'System.Data.DataRowView' to type 'System.Windows.Controls.ListViewItem

That should give you a clue - the Items collection contains the actual items from your data source, not the ListViewItems they're wrapped in.

Try:

foreach (DataRowView row in lsvCountry.Items)
{
   var item = (ListViewItem)lsvCountry.ItemContainerGenerator.ContainerFromItem(row);
   ...
}

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Silverlight XAML loading fails right out of the gate.

Xarzu17-Jul-13 13:35

Xarzu

17-Jul-13 13:35

This is the first time I have started a silverlight project on the current machine I am on with Visual Studio 2010. Until now, I have been programing ni ASP.NET.

When I first tried to start a new Silverlight project, I was told I needed to install a fresh copy of Silverlight. I had to uninstall Silverlight as well as my versions of the Silverlight SDK. After uninstalling and reinstalling (now I have Microsoft Silverlight 5.1.20513.0 and Silverlight 4 SDK 4.0.50826.0) I was finally able to create a Silverlight Project. But the XAML code instantly failed to load in the IDE

http://i67.photobucket.com/albums/h292/Athono/ASP_DOT_NET%20and%20CSS/outofthegate02_zps0bd33d95.png

http://i67.photobucket.com/albums/h292/Athono/ASP_DOT_NET%20and%20CSS/outofthegate01_zpse0f20845.png

Any suggestions?

Possible to get text under mouse of XBAP controls?

Dominick Marciano17-Jul-13 7:50

Dominick Marciano

17-Jul-13 7:50

I recently started a job at a company doing software testing. The company has a XBAP application where we record our test case data, however all the controls (buttons, labels, tree nodes, etc.) are all in Chinese. Since I'm only person on the test team who doesn't speak/read Chinese, the developers in the company aren't willing to translate the entire application. Right now I have to resort to having someone with me to translate as I use the application.

What I'm hoping to do is develop an application where I can hover over/select a control and have the application translate the underlying text using Google (or some other translation software). I'm hoping this is somehow possible, as it would make my life a lot easier and increase my productivity, but I don't even know where to begin.

I've tried searching on Google with very little luck. The only thing I found that seems like it may be able to help is the System.Windows.Automation library, but I haven't found any examples that are applicable to my situation.

Is there someway that this can be done through a .NET application or an IE plug-in? Any suggestions or links to tutorials/examples on how I can get started on this would be greatly appreciated.

Thanks in advance for any help in this matter.

Re: Possible to get text under mouse of XBAP controls?

Mycroft Holmes17-Jul-13 12:56

Re: Possible to get text under mouse of XBAP controls?

17-Jul-13 12:56

Isn't there a browser function/widget/thingy that acts as a magnifying glass, this may be the way to get the part of the screen under the mouse, grab that as an image, do a bit of contrast comparing to get the shapes, turning that into unicode may be a challenge, I expect Google has an api for their translate tool.

Just some thoughts, I have no idea whether all that can all be done and it may be simpler to internationalise the original app!

Never underestimate the power of human stupidity
RAH

Dominick Marciano18-Jul-13 3:35

Dominick Marciano

18-Jul-13 3:35

I wish they would just internationalize the application; I even offered to do it but they won't give me the source code (even though they know my long history of programming experience). The computer has IE10 on it and the only thing I see is a menu option that says "Zoom (100%)" but it is grayed out.

Need to Remove Extra column header in Datagrid

PriyaRam1114-Jul-13 21:39

PriyaRam11

14-Jul-13 21:39

Am using Datagrid,where am getting an extra column header at the end.i bind the values from server to Datagrid thru 'Tag' property.How to remove the extra column header in this case.

Re: Need to Remove Extra column header in Datagrid

Kenneth Haugland18-Jul-13 20:12

Kenneth Haugland

18-Jul-13 20:12

A DataGrid Column could be hidden, but I dont think you can remove it...

Re: Need to Remove Extra column header in Datagrid

Sebastian Meier18-Aug-13 0:04

Sebastian Meier

18-Aug-13 0:04

The DataGrid by default generates its columns automatically. If you set its 'AutoGenerateColumns'-Property to False you can prevent this and maybe the extra column disappears by doing so.
Additionally you can define all the columns manually like so:

<DataGrid>
   <DataGrid.Columns>
      <DataGridTextColumn Header="Test" />
      <DataGridTextColumn Header="Test2" />
   </DataGrid.Columns>
</DataGrid>

If you disable auto generation and define your own columns there should appear no additional columns in the DataGrid.

[SOLVED] Winfroms Component Z-Index

AlphaDeltaTheta14-Jul-13 18:34

AlphaDeltaTheta

14-Jul-13 18:34

Are WinForms components inside a WinformsHost element rendered with maximum possible z-index?
They always seem to overlap any WPF wlement, even with a higher Z-Index. Anyways to fix this? This is really causing much trouble when trying to embed a lengthy WinFormsHost component in a scrollable.

Beauty cannot be defined by abscissas and ordinates; neither are circles and ellipses created by their geometrical formulas.

~ Carl von Clausewitz ~

Source

modified 18-Jul-13 21:45pm.

Pete O'Hanlon17-Jul-13 11:44

17-Jul-13 11:44

It's called the Airspace issue. It's fixed in .NET 4.5.

I was brought up to respect my elders. I don't respect many people nowadays.

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

AlphaDeltaTheta17-Jul-13 16:50

AlphaDeltaTheta

17-Jul-13 16:50

XP doesn't support .NET 4.5. Does it?

Beauty cannot be defined by abscissas and ordinates; neither are circles and ellipses created by their geometrical formulas.

~ Carl von Clausewitz ~

Source

Pete O'Hanlon17-Jul-13 20:22

17-Jul-13 20:22

No, it doesn't.

I was brought up to respect my elders. I don't respect many people nowadays.

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

Richard Deeming18-Jul-13 1:16

Richard Deeming

18-Jul-13 1:16

Pete O'Hanlon wrote:
It's fixed in .NET 4.5.

Are you sure? From what I've seen, there was a fix in the beta, but they removed it from the final release.

.NET 4.5 Beta Readme[^]

1.3.10 Windows Presentation Foundation (WPF)

1.3.10.1 HwndHost feature has been removed from WPF in the .NET Framework 4.5 Beta
The .NET Framework 4.5 Developer Preview included a WPF HwndHost redirection feature. However, this feature had several known issues and has been removed from the .NET Framework 4.5 Beta. It will not be included in any future releases.

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Pete O'Hanlon18-Jul-13 1:21

18-Jul-13 1:21

You're right. Pete Brown, at Microsoft, promised me this would be in and as it wasn't something that I was affected by, I didn't follow up to see if it was delivered. This makes me pretty angry.

I was brought up to respect my elders. I don't respect many people nowadays.

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

Richard Deeming18-Jul-13 1:24

Richard Deeming

18-Jul-13 1:24

Pete O'Hanlon wrote:
Pete Brown, at Microsoft, promised me this would be in

There's your mistake - never trust anyone called "Pete"! Poke tongue | ;-P

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Pete O'Hanlon18-Jul-13 12:24

How to handle button click event from DataTemplate

18-Jul-13 12:24

There's an excellent article here[^] on how to mitigate the airspace issue.

I was brought up to respect my elders. I don't respect many people nowadays.

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

jainga1021314-Jul-13 15:35

jainga10213

14-Jul-13 15:35

I have several datatemplates defined in a resource dictionary (in Resources project)

My application is in a separate project that references the Resources project. Appropriate datatempalte is loaded depending upon the object that is set to the datacontext during run time. Some of these datatemplates have buttons. How do I handle the click event of these buttons. I tried eventsetter but got XAML errors abt not being able to set eventhandler.

Thanks

Re: How to handle button click event from DataTemplate

AlphaDeltaTheta14-Jul-13 17:52

AlphaDeltaTheta

14-Jul-13 17:52

Templates work only with triggers. These triggers are use to set various properties of the button.
See this for a more detailed understanding:Triggers in WPF[^]

ClickEvent is handled in code. It is completely independent from Triggers. You should be able to attach an event handler in the XAML declaration like this.

XML

<Button x:Name="button1" Click="button1_onClick" Template={StaticResource MyTemplate} />

In code:

private void button1_onClick(object sender, RoutedEventArgs e)
{
     //handle button click event here.
}

See MSDN for more details:
Button Class[^]
ButtonBase.Click Event[^]

Beauty cannot be defined by abscissas and ordinates; neither are circles and ellipses created by their geometrical formulas.

~ Carl von Clausewitz ~

Source

Re: How to handle button click event from DataTemplate

jainga1021317-Jul-13 10:46

jainga10213

17-Jul-13 10:46

Thanks Amitosh S.M. for your reply.

I ended up binding a command to the button in datatemplate. And then defining this command as a property in my class. Worked pretty well.

HTML

<Button Name="btnControl"  Canvas.ZIndex="10"  Canvas.Left="175" Canvas.Top="25" Content="ICOM"
MaxWidth="75" MaxHeight="75" Style="{StaticResource ICOMButtonStyle}" Command="{Binding LaunchControlModule}"/>

Public ReadOnly Property LaunchControlModule() As ICommand
    Get
        Return New ViewModelCommand(AddressOf HandlerLaundControlModule)
    End Get
End Property

Private Sub HandlerLaundControlModule()
    ShowControlModule = True
End Sub

    Public Class ViewModelCommand
        Implements ICommand

        Private _handler As Action


        Public Sub New(ByVal handler As Action)
            _handler = handler
        End Sub


#Region "ICommand Members"
         Public Function CanExecute(ByVal parameter As Object) As Boolean Implements System.Windows.Input.ICommand.CanExecute
            Return True
        End Function

        Public Event CanExecuteChanged(ByVal sender As Object, ByVal e As System.EventArgs) Implements System.Windows.Input.ICommand.CanExecuteChanged

        Public Sub Execute(ByVal parameter As Object) Implements System.Windows.Input.ICommand.Execute
            _handler()
        End Sub

#End Region

My Thoughts On My WPF App Design

Kevin Marois12-Jul-13 11:40

Kevin Marois

12-Jul-13 11:40

I'd like to get your thoughts on this design...

So I am writing some software for personal use. I'm an independent developer, and I wanted to put together an app to track the work I'm doing and handle invoicing and billing. Conceptually I understand what I want, but programmatically I am working on the design. This is more about me learning than producing an app.

So, I am building this WPF/MVVM app in components. Most pieces are user controls. I decided that I would use relay messages to communicate between the user control a& its host.

For example, the Client View is found in the Client Center.

Each Client is viewed in its own tab in the Client Center. The Client Center has a toolbar with New, Edit, Save, Cancel and Print buttons. Since the center doesn't really know about the Client views in the tabs, the Center will broadcast a message for each function. The Client Center has an instance of a TabManager class, which is a collection of TabItems. The TabItem's Tag property contains the PK of the entity in the tab's content. So, this is available in the View Model.

As an example, when the Save button on the Client Center toolbar is clicked, then it does:

ClientViewSaveMessage message = new ClientViewSaveMessage
{
    // Get the Client's PK from the active tab's Tag property
    Clientid = getActiveTabEntityPK()
};

Messenger.Instance.Send<ClientViewSaveMessage>(message);

Then in the client view I have

//CTOR
public ClientViewModel
{
    messenger.Instance.Register<ClientViewSaveMessage>(p => receiveSaveMessage(ClientViewSaveMessage)p)
}

and then the receiveSaveMessage

private void receiveSaveMessage(ClientViewSaveMessage message)
{
    // Only call Save if the message is for this Client
    if(this.Client.Id == message.ClientId)
    {
        saveChanges();  
    }
}

This technique has the advantage of decoupling all the components. So far it's working well. It's easy to develop, and so far, easy to maintain.

A drawback might be that I will need a lot of messages. I could make one message that has different properties...

Any way, I'd like to hear what you guys think.

Thanks

If it's not broken, fix it until it is

Re: My Thoughts On My WPF App Design

Mycroft Holmes12-Jul-13 13:06

Re: My Thoughts On My WPF App Design

12-Jul-13 13:06

2 things come to mind. You have low expectations of your client base (reasonable in an independant developer) as you are using a tabcontrol as your client collection UI. I would use a grid. In the late 90 after about 5 years of consulting I had well over 50 organisations I was keeping tabs on, once a client or even a quote always a potential.

One reason not to use a messaging paradigm is that it is a bitch to maintain, there is no direct link between the firer of the message and the consumer of that message. a bitch to support.

Never underestimate the power of human stupidity
RAH

Kevin Marois14-Jul-13 13:42

Kevin Marois

14-Jul-13 13:42

Mycroft Holmes wrote:
You have low expectations of your client base (reasonable in an independant
developer) as you are using a tabcontrol as your client collection UI

I never said that. I said when a client is opened, it's opened in a new tab in the client center. There is a list of clients on the side .

Mycroft Holmes wrote:
One reason not to use a messaging paradigm is that it is a bitch to maintain,
there is no direct link between the firer of the message and the consumer of
that message. a bitch to support.

That's what I said in my OP. Other than that, I cannot see any reason not to use this design,

If it's not broken, fix it until it is

Re: My Thoughts On My WPF App Design

Mycroft Holmes14-Jul-13 14:11