WPF Discussion Boards

27-Jan-11 22:41

You're right. You don't test the private method - you test the code that calls the private method. The easiest way, as you have identified, is to send the message and see what the effect is. Your test doesn't have to be complicated at all.

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Forgive your enemies - it messes with their heads

Re: TDD - Messenger, Testing Help Request...

_Maxxx_30-Jan-11 22:27

_Maxxx_

30-Jan-11 22:27

Thanks Pete,

This is a long, uphill struggle - but maybe there'll be an article at the end of it all!

___________________________________________
.\\axxx
(That's an 'M')

Re: TDD - Messenger, Testing Help Request...

Pete O'Hanlon31-Jan-11 10:41

31-Jan-11 10:41

Cool. Looking forward to seeing it.

I'm not a stalker, I just know things. Oh by the way, you're out of milk.

Forgive your enemies - it messes with their heads

How to sort list view by clicking column header? [modified]

Tesic Goran27-Jan-11 1:02

Re: How to sort list view by clicking column header?

27-Jan-11 1:02

Hello,

I'm new in sorting and not sure how to write the sorting code in order to sort list view by clicking column headers.

I have list view with several columns in my WPF application.
I want to sort list view by clicking any column header.
The list view is populated with data from database using data binding in this way:

List<TestName> lstTestNames = client.GetAllTestNames().ToList();
lstvTestNames.ItemsSource = null;
lstvTestNames.ItemsSource = lstTestNames;

The columns are as usual, ID, string data, date/time date and so on.

The XAML code looks as follows:

<ListView Name="lstvTestNames" Height="360" HorizontalAlignment="Left" Margin="20,33,0,0" VerticalAlignment="Top" Width="465" SelectionChanged="lstvTestNames_SelectionChanged">
  <ListView.View>
    <GridView>
      <GridViewColumn Width="50" DisplayMemberBinding="{Binding Path=test_name_id}">
        <GridViewColumnHeader Name="Sort1" Click="GridViewColumnHeader_Click">ID</GridViewColumnHeader>
      </GridViewColumn>
...

The sorting code should be in click handler:

private void GridViewColumnHeader_Click(object sender, RoutedEventArgs e)
{
  GridViewColumnHeader column = sender as GridViewColumnHeader;

  ...
}

But, how does it look like?

One additional question. If I want to sort list view by ID column that contains IDs from database,
I suppose all those values are strings (maybe not?).
But, I need integer values. How to handle this?

Thank you in advance.

Goran

modified on Thursday, January 27, 2011 7:38 AM

Richard MacCutchan27-Jan-11 2:00

Richard MacCutchan

27-Jan-11 2:00

Take a look at the sort()[^] method of the class.

I must get a clever new signature for 2011.

Re: How to sort list view by clicking column header?

Tesic Goran27-Jan-11 2:32

Re: How to sort list view by clicking column header?

27-Jan-11 2:32

As I can see Sort method for WPF list view doesn't exist.

Richard MacCutchan27-Jan-11 3:10

Richard MacCutchan

27-Jan-11 3:10

Well there seem to be lots of suggestions here[^].

I must get a clever new signature for 2011.

Re: How to sort list view by clicking column header?

Tesic Goran27-Jan-11 3:41

Re: How to sort list view by clicking column header?

27-Jan-11 3:41

Thank you very much, but I've already checked them and nothing simple was there. So, it means, I haven't found what I'm looking for. I would be thankful if somebody can write some code here.

Thank you in advance.

Richard MacCutchan27-Jan-11 3:55

Richard MacCutchan

27-Jan-11 3:55

Tesic Goran wrote:
I've already checked them and nothing simple was there.

Well I've just been reading the article in the first link on that page, and it seemed pretty simple to me, even though I am not a WPF expert.

Tesic Goran wrote:
I would be thankful if somebody can write some code here.

I don't think that's going to happen.

I must get a clever new signature for 2011.

Re: How to sort list view by clicking column header?

dasblinkenlight27-Jan-11 3:57

dasblinkenlight

27-Jan-11 3:57

Surprisingly, sorting ListView in WPF is not a simple problem. It requires you to write lots of code. And I mean lots of code[^]!

I suggest that if you are not restricted to older (i.e. pre-4.0) versions of WPF, try using DataGrid instead of ListView. It is a lot more powerful - for one, it gives you sorting for free, and it does not take too much effort to learn if you know ListView. In one of our projects, I replaced several ListView objects and added editing to one of them in about a day.

Re: How to sort list view by clicking column header?

beeritger27-Jan-11 14:10

beeritger

27-Jan-11 14:10

It's not really complicated,

using System.ComponentModel

ICollectionView view = CollectionViewSource.GetDefaultView(lstvTestNames.ItemsSource);
view.SortDescriptions.Add(new SortDescription("test_name_id", ListSortDirection.Ascending));

Re: How to sort list view by clicking column header?

Tesic Goran27-Jan-11 21:19

Silverlight DataGrid throwing error

27-Jan-11 21:19

This solved my problem.

Thank you very much.

pdf to xaml wrapper

BoySetsFire26-Jan-11 3:45

BoySetsFire

26-Jan-11 3:45

Hello,
i search an pdf to xaml wrapper?
already exists such a thing? Or must I programming it new Wink | ;)

?

thx,
benny

Re: pdf to xaml wrapper

Jason McBurney27-Jan-11 7:32

Jason McBurney

27-Jan-11 7:32

That would be a pretty cool form generating tool. Have fun with that Smile | :)

You can only be young once. But you can always be immature.
- Dave Barry

Santhosh Sebastian Mattathil24-Jan-11 21:48

Santhosh Sebastian Mattathil

24-Jan-11 21:48

On binding large volume of data (say 1500 - 2000) row in Silverlight datagrid.. It throws error.
Does the datagrid has a maximum limit.

Santhosh

Pete O'Hanlon24-Jan-11 21:55

24-Jan-11 21:55

Throw us a bone here. What error gets thrown? When you post a question about an exception, it's generally useful to say what the exception is so that we can help, otherwise we are just going to be randomly guessing.

I'm not a stalker, I just know things. Oh by the way, you're out of milk.

Forgive your enemies - it messes with their heads

Santhosh Sebastian Mattathil

Santhosh Sebastian Mattathil24-Jan-11 22:01

24-Jan-11 22:01

HI Pete
Thanks for the prompt reply...

error thrown in output window is

A first chance exception of type 'System.Windows.Ria.DomainOperationException'

Santhosh

Pete O'Hanlon24-Jan-11 22:09

24-Jan-11 22:09

Ah yes. One of the more unhelpful messages. You'll need to use WCF tracing to identify what's really going on. You'll need to add the following to your config file:

<system.serviceModel>
  <diagnostics>
    <messageLogging logEntireMessage="true" logMalformedMessages="true" logMessagesAtServiceLevel="true" logMessagesAtTransportLevel="true" />
  </diagnostics>
  <serviceHostingEnvironment aspNetCompatibilityEnabled="true"/>
</system.serviceModel>
<system.diagnostics>
  <sources>
    <source name="System.ServiceModel" switchValue="Verbose, ActivityTracing">
      <listeners>
        <add type="System.Diagnostics.DefaultTraceListener" name="Default">
          <filter type="" />
        </add>
        <add type="System.Diagnostics.ConsoleTraceListener" name="console">
          <filter type="" />
        </add>
        <add name="ServiceModelTraceListener">
          <filter type="" />
        </add>
      </listeners>
    </source>
    <source name="System.ServiceModel.MessageLogging" switchValue="Verbose, ActivityTracing">
      <listeners>
        <add type="System.Diagnostics.DefaultTraceListener" name="Default">
          <filter type="" />
        </add>
        <add type="System.Diagnostics.ConsoleTraceListener" name="console">
          <filter type="" />
        </add>
        <add name="ServiceModelMessageLoggingListener">
          <filter type="" />
        </add>
      </listeners>
  </source>
</sources>
<sharedListeners>
  <add initializeData="C:\logging\wcftracesvc.log"
    type="System.Diagnostics.XmlWriterTraceListener, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
    name="ServiceModelTraceListener" traceOutputOptions="Timestamp">
    <filter type="" />
  </add>
  <add initializeData="C:\logging\wcfmsgsvc.log"
    type="System.Diagnostics.XmlWriterTraceListener, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
    name="ServiceModelMessageLoggingListener" traceOutputOptions="Timestamp">
    <filter type="" />
  </add>
</sharedListeners>
<trace autoflush="true" />
</system.diagnostics>

Santhosh Sebastian Mattathil

Santhosh Sebastian Mattathil24-Jan-11 22:12

24-Jan-11 22:12

Hi Pete..
Thanks again.. Smile | :)

But one other query : does the SL datagrid has any limit on its maximum record size..

Santhosh

Pete O'Hanlon24-Jan-11 23:46

24-Jan-11 23:46

No. The only limit you'll run into with the datagrid is memory.

I'm not a stalker, I just know things. Oh by the way, you're out of milk.

Forgive your enemies - it messes with their heads

Abhinav S25-Jan-11 18:27

Abhinav S

25-Jan-11 18:27

No the SL Datagrid does not have a maximum limit.

The funniest thing about this particular signature is that by the time you realise it doesn't say anything it's too late to stop reading it.

My latest tip/trick

Ibrahim.Poonawala1-Feb-11 4:35

Ibrahim.Poonawala

1-Feb-11 4:35

WHICH ERROR?

Pete O'Hanlon1-Feb-11 4:36

1-Feb-11 4:36

This[^] one, and please don't shout.

I'm not a stalker, I just know things. Oh by the way, you're out of milk.

Forgive your enemies - it messes with their heads