No fields in XamDataGrid - WPF Discussion Boards

It did not disabled the button. button was still in enabled state.

AND?

Did the click event on the listbox not fire? Did the property not get set? What have you done to debug this?

Why is common sense not common?
Never argue with an idiot. They will drag you down to their level where they are an expert.
Sometimes it takes a lot of work to be lazy
Please stand in front of my pistol, smile and wait for the flash - JSOP 2012

Yes everything fired
but

PropertyChanged

event in

private void NotifyPropertyChanged

shows null.

Here is the code behind in Control2 to change button state in Control1

public void Somemethod()
{
   Control1 ng = new Control1();
   ng.EnabAdd =false;
}

and this is the property in codebehind in Control1

public bool EnabAdd
       {
           get { return _en; }
           set
           {
               _en = value;
               NotifyPropertyChanged("EnabAdd");
           }
       }

Sorry I do not think you have a good grasp of what it is that you are doing.

nitin_ion wrote:
public void Somemethod()
{
Control1 ng = new Control1();
ng.EnabAdd =false;
}

This will do exactly nothing except create a new control1 and then disable it before going out of scope.

Your button is not being disabled because you have bound it to a property and not changing the property value. I suspect that your NotifyPropertyChanged is null because you have not set the DataContext. "Somemethod" is not a click event handler for a listbox.

Why is common sense not common?
Never argue with an idiot. They will drag you down to their level where they are an expert.
Sometimes it takes a lot of work to be lazy
Please stand in front of my pistol, smile and wait for the flash - JSOP 2012

Well yes i am new to Silverlight
SomeMethod is what i call on listviewitem click event.

I just want to changes the state of button when item is clicked. Is there any tutorial which can help me to do this?

finally got it like this

FrameworkElement fe = (FrameworkElement)this.Parent;
            while (fe.GetType().Name != "parent")
                fe = (FrameworkElement)fe.Parent;

            var tyui=(Button)fe.FindName("controlintheparent");

Make you property as dependecny property as you code look ok may be binding is not workig as its not a depedency property.

Good day!

I have XamDataGrid control with option AutoGenerateFields set to False. When i switch this option to True i see all available colums.
I show my code:

XML

<igDP:XamDataGrid
                          DataSource="{Binding AllProduction}"
                          Theme="Office2010Blue"
                          >
            <igDP:XamDataGrid.FieldLayoutSettings>
                <igDP:FieldLayoutSettings AutoGenerateFields="False"
                                          HighlightAlternateRecords="True"
                                          SelectionTypeCell="Single"
                                          SelectionTypeField="Single"
                                          SelectionTypeRecord="Single"/>
            </igDP:XamDataGrid.FieldLayoutSettings>
            <igDP:XamDataGrid.FieldSettings>
                <igDP:FieldSettings x:Name="FieldSettings"
                                    AllowCellVirtualization="True"
                                    AllowEdit="True"
                                    AllowGroupBy="True"
                                    AllowLabelVirtualization="True"
                                    AllowRecordFiltering="True"
                                    AllowResize="True"
                                    FilterClearButtonVisibility="Visible"
                                    AllowFixing="Near"
                                    AllowHiding="ViaFieldChooserOnly" />
            </igDP:XamDataGrid.FieldSettings>
            <igDP:XamDataGrid.FieldLayouts>
                <igDP:FieldLayout >
                    <igDP:Field Name="Article" Label="Article" Width="45" IsScrollTipField="True"/>
                    <igDP:Field Name="Condition" Label="Condition" Width="50" />
                    <igDP:Field Name="Description" Label="Description" Width="50" />
                    <igDP:Field Name="Standartprice" Label="St. price" Width="50" IsScrollTipField="True"/>
                    <igDP:Field Name="Listprice" Label="List price" Width="50" >                        
                    </igDP:Field>
                </igDP:FieldLayout>
            </igDP:XamDataGrid.FieldLayouts>
            <igDP:XamDataGrid.ViewSettings>
                <igDP:GridViewSettings UseNestedPanels="True" />
            </igDP:XamDataGrid.ViewSettings>
        </igDP:XamDataGrid>

In FieldLayout section i defined some columns, but there are no columns when i run application.

Any suggestions Smile | :)

?

Make sure your datasource is populated.

Never underestimate the power of human stupidity
RAH

Datasource is populated - 100%

hi i want ask how i can connect my desktop with wp7 ?
wcf to control my pc via wp7 it possible in wcf?

You can connect WCF to WP7. Go through this[^] as an example.
However, I'm not sure I understand what you mean by connecting desktop to WP7.

i mean if i can use wcf to control my desktop( i mean control mouse and to read any files on my desktop via wp7 ) that i mean ?

hi there. Thats what I want. I want to build WPF UI to allow users to intuitively edit XMl.
My XML is as simple as this:

XML

<publishers>
<publisher>
   <name>Wiley</name>
   <weblink>http://www.wiley.com</weblink>
   <books>
      <book>
         <name>Project Management</name>
         <price>10.00</price>
      </book>
   </books>
</publisher>
<publisher>
         :
         :
    <books>
            :
            :
    </books>
</publisher>
</publishers>

So how can I build one such UI. Please help. Thank you.

That's rather a broad question, to which there is not a simple answer. Assuming you have a basic knowledge of WPF applications you should take a look at some of the articles[^] here on CodeProject for sample code that may help you.

Binding 100,000 items to a list box can be just silly regardless of what pattern you are following. Jeremy Likness

Don't think in terms of XML; think classes and objects.

Create a WPF app that manages instances of publishers and books:

C#

List<Publisher> Publishers;

Class Publisher {
...
List<Book> Books;
...
}

Class Book {
...
}

Use the .Net XmlSerializer class to write and read the object graph to and from XML.

i am trying to develop a WPF application, i have a mainwindow composed with 3 tabitems, i want to show Wpfpage when i click on bouton in tabitem3, how can i use "mdi container" in WPF application to show WPFpage Confused | :confused:

Hi!
I've added a Scrollviewer to my Screen. Inside the scrollviewer, I've added a scrollpanel and inside which a set of images. I've added the functionality for the tap event of the scrollpanel. I've to add two more sets of scrollviewer, scrollpanel and images(different ones from the first set of images) to the same screen. The functionality for the second and third set of scrollviewer is same with the first one. How to add these two more new scrollviewers? I can't use the same name for these three scrollpanels. How to design so that the existing code can be used for the new scrollviewer and scrollpanel sets also?

Create a UserControl that contains a ScrollViewer, etc. and the event handling code.

Then add as many of these UserControls to your "screen" as you need. Customize each UserControl by setting the appropriate properties (eg. image paths).

I am developing a silverlight application using MVVM pattern. I have a service which returns a string. I need to write that string in a text file. I call the save file dialog method in the service callback only when the returned string value is not null or empty. Here the problem is getting an exception in the savefiledialog statement "

Quote:
Dialog must be user initiated

"

Quote:
private void Service_Completed(ServiceCompletedEventArgs e)
{
if (e.Result != null)
{
if (string.IsNullOrEmpty(e.Result.Item))
{
MessageBox.Show("Empty Result"));
return;
}

bool? dialogResult = this.dialog.ShowDialog();

if (dialogResult == true)
{
byte[] fileBytes = UTF8Encoding.UTF8.GetBytes(e.Result.Item);

using (Stream stream = (Stream)this.dialog.OpenFile())
{
stream.Write(fileBytes, 0, fileBytes.Length);
stream.Close();
}
}
}
}

Please help me how to troubleshoot this exception in the event handler callback

G Nathan

This might help you
http://stackoverflow.com/questions/1355078/dialogs-must-be-user-initiated-with-savefiledialog-in-silverlight-3[^]

Why is common sense not common?
Never argue with an idiot. They will drag you down to their level where they are an expert.
Sometimes it takes a lot of work to be lazy
Please stand in front of my pistol, smile and wait for the flash - JSOP 2012

Hi,
In my View
I have a datagrid and a 'Undo' button. On 'Undo' I am showing a BusyIndicator.
Suppose,
1) I try to add a new row in the datagrid
2) Datagrid row goes into the error state because of some validation failure
3) While datagrid is in edit mode, without loosing focus on the datagrid, I presses a shortcut 'Ctrl+Z' to Undo changes

Following exception occurs:-
System.Windows.Media.Animation.AnimationException: Cannot animate the 'IsEnabled' property on a 'System.Windows.Controls.ContentControl' using a 'System.Windows.Media.Animation.ObjectAnimationUsingKeyFrames'. For details see the inner exception. ---> System.InvalidOperationException: 'NewItemPlaceholderPosition' is not allowed during a transaction begun by 'AddNew'.

Actually on DataGrid LostkeyboardFocus i explicitly CommitEdit and CommitNew for the datagrid. So, if I press the 'Undo' button with mouse everything works fine.

But if I presses a shortcut while datagrid is in edit mode and focus is still in the datagrid, then the BusyIndicator, while setting status to BUSY, tries to change IsEnabled of the datagrid and the exception occurs.

Please help me if anyone has a solution

Sorry that I'm not going to be able to help, I have a basic design principle that will not allow the user to add rows to a grid, I insist that a dialog or detail panel is used for all but the most trivial editing process. It eliminates all sorts of issues I see posted here!

Never underestimate the power of human stupidity
RAH

My aim is to change some values in my style at runtime. So what Im gonna do is, I clone the current style and change the values I want to change. But then I have a problem to add the style to the Resources. Is there away?
At the moment I just can load a whole xaml-file.

In the code is at the and the point where I have problems:

I have a

C#

tyleClone

( clone of the current style) which I want to add to

C#

this.Resources

C#

public MainWindow()
        {
            InitializeComponent();

            using (FileStream fs = new FileStream(@"C:\projekte\MyButtonStyle.xaml", FileMode.Open))
            {
                ResourceDictionary rd = (ResourceDictionary)XamlReader.Load(fs);
                this.Resources = rd;
            }

            //THIS WORKS FINE PRETTY WELL


            //But now I want to try this:

            var style = new Style();
            style = ((Style)Resources["myFunctionButtonStyle"]);


            var styleClone = new Style();
            foreach (var setter in style.Setters)
            {
                var typedSetter = setter as Setter;
                if (typedSetter != null)
                {
                    var newSetter = new Setter(typedSetter.Property, typedSetter.Value);
                    styleClone.Setters.Add(newSetter);
                }
            }

            styleClone.Setters.Add(new Setter { Property = Button.FontSizeProperty, Value = (double)111 });

            //until here it works pretty well!
            //Now, how can I add this style to the Resources??? I mean, you showed me how to include xaml-files. but how is
            // with pure Styles?????
            this.Resources.Add(      )

        }

Hi!
I've added a Scrollviewer(Horizontal) to my screen. Inside this scrollviewer I've added a stackpanel. I want to add images one after other into this stackpanel. How to add images to the stackpanel?