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Hi all,
I'm working on a WPF solution where I have to populate a combobox depending on the selected item of another combobox. But I get an error.
The XAML code is:
<Window xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"
x:Class="ICP.Reporting.WPFReportViewer.Windows.Report_Script_Resultaten"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
xmlns:navigation="clr-namespace:Infragistics.Silverlight.SampleBrowser.Framework.Controls;assembly=Infragistics.Silverlight.SampleBrowser.Framework"
xmlns:ig="http://schemas.infragistics.com/xaml"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
xmlns:uri="clr-namespace:ICP.Reporting.WPFReportViewer.Resources.ReportUri"
xmlns:res="clr-namespace:ICP.Reporting.WPFReportViewer.Resources.Pages"
d:DesignHeight="500" d:DesignWidth="567" SizeToContent="WidthAndHeight"
Title="Report Scripts Resultaten"
WindowStartupLocation="CenterScreen" Icon="/ICP.Reporting.WPFReportViewer;component/Images/Report_New.ico">
<Window.Resources>
<uri:ReportLibraryUri x:Key="ReportLibraryUri" />
<res:ParametersStrings x:Key="ParametersStrings" />
</Window.Resources>
<Grid x:Name="LayoutRoot" HorizontalAlignment="Stretch">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"></ColumnDefinition>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<StackPanel Name="stackPanelParameters" Orientation="Vertical" VerticalAlignment="Top" Height="Auto" HorizontalAlignment="Center" Width="170" Grid.Row="0" Grid.RowSpan="1" Grid.Column="0" Grid.ColumnSpan="1" Margin="10,5">
<GroupBox Name="groupBoxBeginEindDatum" Header="Kies begin- en einddatum" Height="Auto" Width="Auto" Margin="0,5,0,0" HorizontalContentAlignment="Center" VerticalContentAlignment="Center">
<StackPanel Name="stackPanelBeginEindDatum" Orientation="Vertical" VerticalAlignment="Center" HorizontalAlignment="Center" Height="Auto" Width="Auto" >
<!--
<Label Height="20" Content="Begindatum:" Margin="15,5,15,0" Width="77" Padding="5,0" HorizontalAlignment="Center" HorizontalContentAlignment="Center" />
<!--
<DatePicker Name="datePickerBeginDatum" Height="23" Width="120" SelectedDateFormat="Short" DisplayDate="01-01-2012" Text="" SelectedDate="01-01-2012" Margin="5,0" Padding="2" />
<!--
<Label Height="20" Content="Einddatum:" Margin="15,5,15,0" Width="77" Padding="5,0" HorizontalAlignment="Center" HorizontalContentAlignment="Center" />
<!--
<DatePicker Name="datePickerEindDatum" Height="23" Width="120" SelectedDateFormat="Short" DisplayDate="12-31-2012" Text="" SelectedDate="12-31-2012" Margin="5,0" Padding="2" />
</StackPanel>
</GroupBox>
<GroupBox Name="groupBoxAuthoriteitScript" Header="En authoriteit en script" Height="Auto" Width="Auto" Margin="0,5,0,0" HorizontalContentAlignment="Center" VerticalContentAlignment="Center">
<StackPanel Name="stackPanelAuthoriteitScript" Orientation="Vertical" VerticalAlignment="Center" HorizontalAlignment="Center" Height="Auto" Width="Auto">
<Label Height="20" Content="Authoriteit:" Margin="15,5,15,0" Width="77" Padding="5,0" HorizontalAlignment="Center" HorizontalContentAlignment="Center" />
<ComboBox Height="25" Name="comboBoxAuthoriteit" Margin="5,0" Padding="2" SelectedIndex="-1" ItemsSource="{Binding}" DisplayMemberPath="Name" IsSynchronizedWithCurrentItem="True" SelectionChanged="comboBoxAuthoriteit_SelectionChanged" />
<Label Height="20" Content="Script:" Margin="15,5,15,0" Width="77" Padding="5,0" HorizontalAlignment="Center" HorizontalContentAlignment="Center" />
<ComboBox Height="25" Name="comboBoxScript" Margin="5,0" Padding="2" SelectedIndex="-1" ItemsSource="{Binding}" DisplayMemberPath="Name" />
</StackPanel>
</GroupBox>
<GroupBox Name="groupBoxRapport" Header="Rapport" Height="Auto" Width="Auto" Margin="0,5,0,0" HorizontalContentAlignment="Center" VerticalContentAlignment="Center">
<StackPanel Name="stackPanelRapport" Orientation="Vertical" VerticalAlignment="Center" HorizontalAlignment="Center" Height="Auto" Width="Auto">
<!--
<Button Content="Genereer rapport" Margin="5" Click="Button_Refresh_Click" Height="23" Width="100" HorizontalAlignment="Center" VerticalAlignment="Center" />
</StackPanel>
</GroupBox>
</StackPanel>
<ig:XamReportViewer HorizontalAlignment="Center" Name="xamReportViewer1" VerticalAlignment="Bottom" PageFit="Width" UseLayoutRounding="True" MinWidth="380" MinHeight="445" PageMargin="0" AutoRender="True" Grid.Row="0" Grid.Column="1" Margin="0">
<ig:XamReportViewer.RenderSettings>
<ig:ClientRenderSettings DefinitionUri="/ICP.Reporting.ReportingClassLibrary;component/ReportDesigns/Report_Scripts_Resultaten.igr" />
</ig:XamReportViewer.RenderSettings>
<!--
<ig:XamReportViewer.Parameters>
<ig:Parameter ParameterName="beginDatum" ParameterValue="{Binding ElementName=datePickerBeginDatum, Path=SelectedDate}"/>
<ig:Parameter ParameterName="eindDatum" ParameterValue="{Binding ElementName=datePickerEindDatum, Path=SelectedDate}"/>
<!--
</ig:XamReportViewer.Parameters>
</ig:XamReportViewer>
</Grid>
</Window>
The code behind is:
using ICP.Reporting.ReportingClassLibrary;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading;
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.Shapes;
using Infragistics.Controls.Reports;
namespace ICP.Reporting.WPFReportViewer.Windows
{
public partial class Report_Script_Resultaten : Window
{
public Report_Script_Resultaten()
{
InitializeComponent();
CultureInfo ci = CultureInfo.CreateSpecificCulture(CultureInfo.CurrentCulture.Name);
ci.DateTimeFormat.ShortDatePattern = "dd/MM/yyyy";
ci.DateTimeFormat.DateSeparator = "-";
Thread.CurrentThread.CurrentCulture = ci;
BindComboBoxAuthoriteit(comboBoxAuthoriteit);
}
private void Button_Refresh_Click(object sender, RoutedEventArgs e)
{
this.xamReportViewer1.Refresh();
}
public void BindComboBoxAuthoriteit(ComboBox comboBoxName)
{
string strConnectionAuthoriteit = ConfigurationManager.ConnectionStrings["ICP.Reporting.ReportingClassLibrary.Properties.Settings.sqlDS_Authorities"].ConnectionString;
SqlConnection connectionAuthoriteit = new SqlConnection(strConnectionAuthoriteit);
SqlDataAdapter daAuthoriteit = new SqlDataAdapter("SELECT Authority_ID, Description FROM Authorities ORDER BY Description", connectionAuthoriteit);
DataSet dsAuthoriteit = new DataSet();
daAuthoriteit.Fill(dsAuthoriteit, "Authorities");
comboBoxName.ItemsSource = dsAuthoriteit.Tables[0].DefaultView;
comboBoxName.DisplayMemberPath = dsAuthoriteit.Tables[0].Columns["Description"].ToString();
comboBoxName.SelectedValuePath = dsAuthoriteit.Tables[0].Columns["Authority_ID"].ToString();
}
private void comboBoxAuthoriteit_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (comboBoxAuthoriteit.SelectedIndex > -1)
{
BindComboBoxScript(comboBoxScript);
}
}
public void BindComboBoxScript(ComboBox comboBoxName)
{
string strqryScript = string.Format("SELECT Questionnaire_Id, Questionnaire_Name FROM Questionnaires WHERE (Authority_ID = {0}) ORDER BY Questionnaire_Name", comboBoxAuthoriteit.SelectedItem);
string strConnectionScript = ConfigurationManager.ConnectionStrings["ICP.Reporting.ReportingClassLibrary.Properties.Settings.sqlDS_Scripts"].ConnectionString;
SqlConnection connectionScript = new SqlConnection(strConnectionScript);
SqlDataAdapter daScript = new SqlDataAdapter(strqryScript, connectionScript);
DataSet dsScript = new DataSet();
daScript.Fill(dsScript, "Questionnaires");
comboBoxName.ItemsSource = dsScript.Tables[0].DefaultView;
comboBoxName.DisplayMemberPath = dsScript.Tables[0].Columns["Questionnaire_Name"].ToString();
comboBoxName.SelectedValuePath = dsScript.Tables[0].Columns["Questionnaire_Id"].ToString();
}
}
}
When I run the solution I get the sqlexception "The multi-part identifier "System.Data.DataRowView" could not be bound."
on the following line:
daScript.Fill(dsScript, "Questionnaires");
Can someone tell me where I'm going wrong and what I have to correct?
Thank you very much for your help.
Greetings,
Geert De Vylder
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Without ratting through your code I would guess that you are passing in the row object into the query and it is turning the object into a string(). You should be passing in the SelectedValue from the combo not the SelectedItem.
Never underestimate the power of human stupidity
RAH
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Hi Mycroft,
I have tried this also, but that doesn't work neither.
Greetings,
Geert
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I have a RichTextBox with attached property:
<RichTextBox x:Name="rtf" wpfPages:ScrollBarUtils.VerticalScrollValue="{Binding ElementName=scroll, Path=Value}"/>
which binds to ScrollBar.Value property.
I want to bind back ScrollBar.Value to this attached property. Smth like this:
<ScrollBar x:Name="scroll" Value="{Binding ElementName=rtf, Path=(wpfPages:ScrollBarUtils.VerticalScrollValue)}"/>
Please advice how can I do it?
savbace
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Good Day i have a Window in WPF defined like this
<Window x:Class="RVI_Education.Gavigator"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Gavigator" Height="673.2" Width="1304.4">
<Frame Name="FrameWithinGrid" >
</Frame>
</Window>
and im using it as a start up in my app.xaml
<Application x:Class="RVI_Education.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
StartupUri="Gavigator.xaml">
<Application.Resources>
</Application.Resources>
</Application>
and on Window loaded event i navigate to another Window
like this
public Gavigator()
{
InitializeComponent();
Loaded += Gavigator_Loaded;
}
void Gavigator_Loaded(object sender, RoutedEventArgs e)
{
FrameWithinGrid.Navigate(new System.Uri("Splash.xaml",UriKind.RelativeOrAbsolute));
}
when i load the Project i get an Error
'RVI_Education.Splash' root element is not valid for navigation.
Vuyiswa Maseko,
Spoted in Daniweb-- Sorry to rant. I hate websites. They are just wierd. They don't behave like normal code.
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.com
vuyiswa[at]dotnetfunda.com
http://www.Dotnetfunda.com
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The error message indicates that the error is in Splash.xaml, which you haven't posted. I would guess that Splash.xaml is a Window, which won't work:
http://stackoverflow.com/a/7078211/124386[^]
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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There is nothing wrong with the Splash Window , the problem is that im trying to navigate from a Window to a Window.
thank for the link , i will continue with the nasty creation of object and disposing them.
Thanks
Vuyiswa Maseko,
Spoted in Daniweb-- Sorry to rant. I hate websites. They are just wierd. They don't behave like normal code.
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.com
vuyiswa[at]dotnetfunda.com
http://www.Dotnetfunda.com
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Hi guys, can u share with me about random image with array in WP ?
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Eh? What exactly do you mean?
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If you are using bytes to store a byte array, this[^] would give you an idea on what you need to do to display a random image.
Note that all API's may not be available in WP so you may have to improvise to achieve similar results.
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Thank you, but i want to random image not byte..
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You'll have to define what you mean by "random image" because I would have suggested the exact same thing. Store a bunch of random bytes in an array and treat that as image data.
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Hi,
I am working on a WPF application. The application uses Infragistics controls such as Ribbon Controls and XamDockManager. It has a File Menu wherein I have provided a Save menu item to save the items on the canvas to a file. On click of Save button, Save Dialog opens to provide the File name and file is saved at the defined location.
The saving process is quite time consuming and in order to show something to the user, I have used the WaitCursor.
I have used a class similar to the one mentioned(UiServices.ShowWaitCursor) in the below thread.
http://stackoverflow.com/questions/7346663/how-to-show-a-waitcursor-when-the-wpf-application-is-busy-databinding[^]
http://stackoverflow.com/questions/3480966/display-hourglass-when-application-is-busy[^]
The usage is like this
public void WriteToFile(string fileName)
{
UiServices.SetBusyState();
_customFileWriter.WriteToFile(fileName);
}
This works fine, if we just save the things on the canvas into a file. However, if fails in the below scenario.
The application has a canvas where I display some UI elements. On double click of the UI element, we launch a Windows form in the Infragistic ContentPane.
We have a modeless dialog opened and perform File -> Save and provide a file name, the cursor stays indefinitely. It goes only once we click on the Canvas. The DispatcherTimer_Tick is fired only when we click on the Canvas which resets the cursor.
The DispatcherPriority is ApplicationIdle.
Another observation is, this happens only when we open the Save dialog through the File -> Save. It works fine if we open the Save dialog through Ctrl + S key combinations.
Is there a way I can debug the non firing of DispatcherTimer.Tick event or any other way to handle this?
I created a simple WPF application and it works fine in that.
MainWindow.xaml
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Menu Height="36" Name="menu1" Margin="12,0,439,197">
<MenuItem Header="_File" Height="22" Name="menuitem1" Width="200" Margin="10, 10, 5, 5" HorizontalAlignment="Left" VerticalAlignment="Top" Background="Chocolate">
<MenuItem Header="Save..." Click="MenuItem_Click"/>
</MenuItem>
</Menu>
<Canvas Height="156" HorizontalAlignment="Left" Margin="81,77,0,0" Name="canvas1" VerticalAlignment="Top" Width="304" Background="#FF945050">
<Button Canvas.Left="128" Canvas.Top="49" Content="Button" Height="23" Name="button1" Width="75" Click="button1_Click" />
<TextBox Canvas.Left="48" Canvas.Top="128" Height="23" Name="textBox1" Width="120" />
</Canvas>
</Grid>
</Window>
MainWindow.cs
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.Threading;
namespace WpfApplication1
{
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void button1_Click(object sender, RoutedEventArgs e)
{
System.Windows.Forms.Form form = new System.Windows.Forms.Form();
form.Height = 200;
form.Width = 400;
form.TopMost = true;
form.Show();
}
private void MenuItem_Click(object sender, RoutedEventArgs e)
{
string fileName = SaveFileDialog();
UiServices.SetBusyState();
System.Threading.Thread.Sleep(3000);
}
private string SaveFileDialog()
{
Microsoft.Win32.SaveFileDialog dlg = new Microsoft.Win32.SaveFileDialog();
Nullable<bool> result = dlg.ShowDialog();
string filename = string.Empty;
if (result == true)
{
filename = dlg.FileName;
}
return filename;
}
}
public static class UiServices
{
private static bool _isBusy;
public static void SetBusyState()
{
SetBusyState(true);
}
private static void SetBusyState(bool busy)
{
if (busy != _isBusy &&
Application.Current != null &&
Application.Current.Dispatcher != null)
{
_isBusy = busy;
Mouse.OverrideCursor = busy ? Cursors.Wait : null;
if (_isBusy)
{
new DispatcherTimer(TimeSpan.FromSeconds(0), DispatcherPriority.ApplicationIdle, DispatcherTimer_Tick, Application.Current.Dispatcher);
}
}
}
private static void DispatcherTimer_Tick(object sender, EventArgs e)
{
var dispatcherTimer = sender as DispatcherTimer;
if (dispatcherTimer != null)
{
SetBusy(false);
dispatcherTimer.Stop();
}
}
}
}
Thanks in advance!
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I can't execute your code (I don't have those libraries you use), but can you use another priority?
I don't know... maybe you have an animation or similar that is never really letting the application become idle.
Note: Seeing your code, you don't need to use a DispatcherTimer. It is enough to do a Dispatcher.BeginInvoke to call your delegate. This will also guarantee that it will execute only once, as soon as all the messages (including the actual one) are processed. In fact, I think your problem is that you never started your timer.
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Hi
Hopefully this will be a quick question to answer, but personally I'm not sure which way to go.
Firstly I'm using SL5, MVVM, MEF, EF. I have a person entity - the person entity has a collection of account entities, address entities and order entities.
In my view I am displaying a list of the people on the left with the corresponding lists on the right (accounts, addresses, orders). When the person is changed in the list I obviously want the lists on the right to update.
Obviously it would be inefficient to just include the lists in the domain service query using the .Include() operation as it will return ALL the people with ALL the related list entities. This is where my dilemma is - when I change the person do I either:
Load each of these lists separately, each with their own completed events where I populate the view lists. Which is basically three extra calls to the DB.
OR
2. Call a different GetPeople query in the domain service where I pass in the current person ID and use the .Include() operation to include accounts, address and orders, but filter by the passed in PersonID. (i.e. return this.ObjectContext.People.Include("Accounts").Include("Addresses").Include("Orders").Where(p=>p.ID == PersonID);)
Any help is much appreciated.
Thanks.
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Can I integrate WPF application in web application??
Detail:-
I am working in a website, in this I want to integrate a small WPF application. Can i do this?? for eg... I wanna open login/signin popUp ("which is created in WPF") in my web application to enter the user in main page.
or we can say that in any tutorial webpage, I want to insert demo application of WPF application.
If it is possible please let me know, how i can do this.
Thanks in advance.
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If you are going to develop an application from scratch, you may also want to consider using Silverlight - this will give you scope to development for the web.
Note that any SL application can be run outside the browser too.
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I'm working on an WPF MVVM application. The data entry screen has to have all it's fields disabled until the user clicks "Add" or "Edit", and also the fields cannot become enabled if the user does not have rights to that field.
So, I would like to bind all IsEnabled properties in the XAML to a single method on the ViewModel. I would need to pass in a string value which is the 'key' of the field. Then in the VM would use the key to check the rights. The method would be something like
public bool CanEnableField(string Key)
{
}
A converter would probably not work because that class won't know about the VM and the form's mode (Add/Edit).
I could bind each field's IsEnabled to individual properties on the VM and handle all this in the getter, but that would be a lot of properties in the VM.
Anyone have any thoughts on how to do this?
If it's not broken, fix it until it is
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The best way is to have a bool Property in your VM, to which you caan bind the IsEnabled property of the relevant controls like this:-
VM:
public bool CanEnableField(string Key)
{
}
public bool EnableControls
{
get
{
return enableControls;
}
set
{
if (enableControls != value)
{
enableControls = value;
OnPropertyChanged("EnableControls");
}
}
}
View:
<Label Grid.Row="2" Content="Name : " HorizontalAlignment="Right" VerticalAlignment="Bottom" Margin="2,2,2,7" />
<TextBox Grid.Column="1" Grid.Row="2" Margin="2" IsEnabled="{Binding Path=EnableControls}" Text="{Binding Path=SelectedCustomer.Name, ValidatesOnDataErrors=True,UpdateSourceTrigger=PropertyChanged}" />
Hope this helps
When I was a coder, we worked on algorithms. Today, we memorize APIs for countless libraries — those libraries have the algorithms - Eric Allman
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If you're using .NET 4.0 or 4.5, you can combine a single property with a dynamic object to achieve this:
public interface ICanEnableField
{
bool CanEnableField(string key);
}
public sealed class CanEnableFieldHelper : DynamicObject
{
private readonly ICanEnableField _owner;
public CanEnableFieldHelper(ICanEnableField owner)
{
_owner = owner;
}
public override bool TryGetMember(GetMemberBinder binder, out object result)
{
result = _owner.CanEnableField(binder.Name);
return true;
}
}
public class YourViewModel : ICanEnableField
{
private readonly CanEnableFieldHelper _helper;
public YourViewModel()
{
_helper = new CanEnableFieldHelper(this);
}
public dynamic CanEnable
{
get { return _helper; }
}
public bool CanEnableField(string key)
{
...
}
}
In you XAML, you can then bind to CanEnable.Key, which will return the result of calling CanEnableField("Key"):
<TextBox IsEnabled="{Binding Path=CanEnable.Field1}" ... />
When you need to change the state, you just need to raise the PropertyChanged event for the CanEnable property.
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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Thanks, I'll take a look at it
If it's not broken, fix it until it is
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This worked perfect. Thanks!
If it's not broken, fix it until it is
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I have a combo box bound to an ObservableCollection<classmodel>. The entity passed into the view has an instance of a ClassModel. I want to select the item in the combo which matches the entite's ClassModel.
So far im lookping over the ObservableCollection to find the item:
foreach (var jobClass in Classes)
{
if (jobClass.Id == JobRevision.JobClass.Id)
{
SelectedClass = jobClass;
break;
}
}
is there a way to do this without loopping?
Thanks
If it's not broken, fix it until it is
modified 12-Jan-13 21:27pm.
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Can't you bind the SelectedValuePath of the combo to the SelectedJobClass.ID
Never underestimate the power of human stupidity
RAH
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