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hi ,
well as for copying the row into another new one there are so many validations to handle, (i think)... i am very new to wpf, and so can u please tell me a easy way to do it...
thank you (in advance)...
have a great day....
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Christian Graus wrote: this is a programming forum, not a meeting place for punk rap wannabes
Yo homey - don't be dissin'!
Peace out,
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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hello I used Wpf.Themes library from CodePlex
in My Application
When I apply a theme every thing works well except that when I open a new Window
It appear empty for the first time !!!!!!!! without any control
until I move the window to other position in screen the window Update its Layout
why's that I watched the OutPut Window and Found the Exception that thrown to the
Application and Iused to write it to the Application Output .
what ever this is the Exception and its inner Exception
could you tell how can I solve it or any usefull link
Error : Cannot animate the 'Visibility'
property on a 'System.Windows.Controls.Border'
using a 'System.Windows.Media.Animation.ObjectAnimationUsingKeyFrames'.
For details see the inner exception.
--Inner : The animation(s) applied to the 'Visibility'
property calculate a current value of 'Visible',
which is not a valid value for the property.
You have To Search About The Truth Of Your Life
Why Are you Here In Life ?
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Hi,
I am working on a application in which I have to get the images attached to mail of a particular mail Id. I came to know that that we can access a Email Id by using Pop3. In this we should be able configure any mail server Email Id.
If any one have any idea on this please reply me. If you have any idea to do this in WPF or Silver or both please reply me.
Thanks in advance.
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This is NOT a WPF question.
I am not sure if this will help - 1[^], 2[^] or 3[^]
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Hi All,
I am implementing an image slider almost similar to this: http://www.rai.tv/dl/RaiTV/homeTv.html[^]
Is it possible to change the image size and dimension when they are moved along the extreme left hand side or right hand side? I tried using the ScrollViewer control with static images, but that doesn't help to get the feel as in the link above.
Please help. Thanks.
Sunil
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Hi,
We are doing some grid evaluations for a project. I am trying out the DataGrid from Microsoft (the WPF Toolkit). We have it bound to an IOBservableCollection, and are simulating lots of updates to the data. The grid refresshes fine in most case. But if I have the grid sorted ona column, and I change the value of the column in the data, the grid data udpates but it does not re-apply the sort. It just shows the column as sorted but the values.
I think this is because a property change on an individual item does not fire a collection changed event in the ObservableCollection. If I fire a collectionChanged event manually the grid does update. I can also make it sort by replacing the object itself. But both these appraches are very CPU expensive.
So what is teh recommended way to reapply the sort on the grid on a data update?
thanks and regards,
Bijesh
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Bijesh wrote: I think this is because a property change on an individual item does not fire a collection changed event in the ObservableCollection.
Right - only changes to the collection, not changes to items in the collection.
For change notifications on items, you can implement INotifyPropertyChanged[^] on
the item class(es).
Mark Salsbery
Microsoft MVP - Visual C++
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Hi Mark, Thanks for the response.
WE have implemented the INotifyPropertyCHanged on the item class. But unfortunately the grid does not look like it is updating the sorting on the event. I guess ideally it should handle the PropertyChanged event and check whether the changed column is being sorted on and then update the sorting, but it isn't.
I also tested this on the DAtaGrid sample from here:
http://blogs.msdn.com/vinsibal/archive/2008/10/22/wpf-datagrid-and-the-wpftoolkit-have-released.aspx[^]
..and got the same result. If I manually edit onthe grid it re-sorts because it fires a CollectionChanged event there I Think. But if I directly edit thte data in code it updates the value on the grid but does to update the sorting..
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I would ask on the toolkit site and/or post it as an omitted feature.
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Thanks I will do that. If you have any opinion on what is the best way to refresh a grid, or refresh a collection please let me know, thanks..
Bijesh
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The control should really do that itself.
Off the top of my head, things to try:
1) DataGrid.InvalidateProperty()
2) detach and re-attach the collection ( )
The control's not officially released so it would be nice to catch
stuff like this before it goes into the .NET framework
Mark Salsbery
Microsoft MVP - Visual C++
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From what I've tried so far, gettng the efault view of the collection is what work, but the performance is not great. detaching and attaching, seems very wrong, but I might go for it, as it has the advantage that I can effectively suspend the grid, do a batch of updates to the underlying data and then refresh the grid, rather than have the grid continuously update itself..
Again thanks for the responses...
Bijesh
modified on Tuesday, June 23, 2009 8:40 AM
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OK - this is odd. I knocked up a quick sample application and sorted on a column - then I started changing the values in the sorted column and it refreshed and changed the sort order in every case. Here's the sample code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Media.Media3D;
using System.ComponentModel;
using System.Collections.ObjectModel;
namespace ModelVisualTest
{
public partial class Window1 : Window
{
private ObservableCollection<Person> _people;
public Window1()
{
InitializeComponent();
}
private void BuildModel()
{
_people = new ObservableCollection<Person>();
_people.Add(new Person() { Forename = "Peter", Surname = "O'Hanlon", Age = 30 });
_people.Add(new Person() { Forename = "Josh", Surname = "Walton", Age = 29 });
_people.Add(new Person() { Forename = "William", Surname = "Hill", Age = 28 });
_people.Add(new Person() { Forename = "Joseph", Surname = "Brannagan", Age = 36 });
dataGrid1.ItemsSource = _people;
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
BuildModel();
}
}
public class Person : INotifyPropertyChanged
{
private string _forename;
public string Forename
{
get { return _forename; }
set
{
if (_forename != value)
{
_forename = value;
OnChanged("Forename");
}
}
}
private string _surname;
public string Surname
{
get { return _surname; }
set
{
if (_surname != value)
{
_surname = value;
OnChanged("Surname");
}
}
}
private int _age;
public int Age
{
get { return _age; }
set
{
if (_age != value)
{
_age = value;
OnChanged("Age");
}
}
}
#region INotifyPropertyChanged Members
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnChanged(string p)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(p));
}
}
#endregion
}
} The XAML is simply this:
<Window x:Class="ModelVisualTest.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300" xmlns:my="http://schemas.microsoft.com/wpf/2008/toolkit"
Loaded="Window_Loaded" >
<Grid>
<my:DataGrid x:Name="dataGrid1" AutoGenerateColumns="True" />
</Grid>
</Window>
"WPF has many lovers. It's a veritable porn star!" - Josh Smith As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.
My blog | My articles | MoXAML PowerToys | Onyx
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Hmm that is really odd.. Thanks for posting the code sample. I'll try it out at the earliest.. (unfortunately had to get into some other work for now)
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Hi Pete,
Just tried out your sample. If I understood correctly you are manually editing the values? That works fine for me too. BEcause I think a manual edit ends up firing a collectionChanged event and this takes care of resorting the grid. This is probably fine performance-wise too as a manual edit is not doing to happen numerous times a second.
My issue is with updates being done on the data programatically to a sorted column, do not seem to readjust the sorting. This seems like a generic requirement and it should do it automatically, or atleast provide an option to have it done automatically. Why would we want to have a grid that appears to be sorted but it actually not?
Bijesh
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is there any workflow designer for workflow WF?
bah10z
bah10z
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engbahramZarin wrote: is there any workflow designer for workflow WF?
Errm. Yes. It's in Visual Studio. I may be missing something about your question though...
"WPF has many lovers. It's a veritable porn star!" - Josh Smith As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.
My blog | My articles | MoXAML PowerToys | Onyx
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Not in the express edition according to this article[^].
Eslam Afifi
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Hello.
Not being proficient in designing vector graphics, I would like to convert an existing glyph from a font to a WPF shape/path.
To be more specific I need a square root symbol from the OpenSymbol font, as well as other math stuff. I prefer having them as shapes because I want to have more control over scaling and actual appearance. Additionaly I could modify them which is easier than creating from scratch.
Is there a way to do that automatically?
Secondary wish: Convert a vector graphics from PaintShop Pro to vector graphics in WPF.
Thanks.
Greetings - Jacek
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Dunno about the font, or Paint Shop Pro, but Blend Design converts vector files from Adobe Illustrator to XAML. So, that's where I would look for other formats, too.
Christian Graus
Driven to the arms of OSX by Vista.
"! i don't exactly like or do programming and it only gives me a headache." - spotted in VB forums.
I can do things with my brain that I can't even google. I can flex the front part of my brain instantly anytime I want. It can be exhausting and it even causes me vision problems for some reason. - CaptainSeeSharp
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Thanks for your reply.
So I need both Expression Design and Adobe Illustrator to do this simple task...? I have been googling for a PSP->AI converter but I haven't found anything applicable so far . BTW I have the Expression Studio installed. Do you know any freeware converters? I am really poor at drawing.
I know that "Switch anything to a WPF shape" would be a great title for a CP article, but...
Greetings - Jacek Gajek
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Jacek Gajek wrote: So I need both Expression Design and Adobe Illustrator to do this simple task...?
I was more saying that I know Expression does AI, but I don't know what other formats it does. I do recall converting a font character to vectors in C# at one point, I believe there's a way to get a Path object in GDI+ from a font/string combination. Not sure where you'd go from there.
I really don't know exactly how to do what you want, I'm just trying to throw out what I do know, in case it helps. And yes, I think that the Expression product is an attempt to turn VS into two products, so we devs have to spend more money.
Christian Graus
Driven to the arms of OSX by Vista.
"! i don't exactly like or do programming and it only gives me a headache." - spotted in VB forums.
I can do things with my brain that I can't even google. I can flex the front part of my brain instantly anytime I want. It can be exhausting and it even causes me vision problems for some reason. - CaptainSeeSharp
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It looks like I'm on my own again . Thanks for help and good night (it's 2 am here).
EDIT:
Christian Graus wrote: I don't know what other formats it does
I forgot to write that I checked it out. It does: {supported formats screenshot}[^]
Greetings - Jacek Gajek
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Did you try starting with a PNG of the character, at a decent size, and see if it will convert it to XAML for you ?
Christian Graus
Driven to the arms of OSX by Vista.
"! i don't exactly like or do programming and it only gives me a headache." - spotted in VB forums.
I can do things with my brain that I can't even google. I can flex the front part of my brain instantly anytime I want. It can be exhausting and it even causes me vision problems for some reason. - CaptainSeeSharp
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