I have created an User Control with these parameters
private System.Resources.ResourceSet ProjectRes = Магазин.Properties.Resources.ResourceManager.GetResourceSet(new System.Globalization.CultureInfo("en-us"), true, true);
public ButtonPictureBox()
{
InitializeComponent();
}
private void pictureBox1_MouseEnter(object sender, EventArgs e)
{
Bitmap Imagen = (Bitmap)ProjectRes.GetObject((sender as PictureBox).Name.Substring(2) + "1");
if (Imagen != null)
{
(sender as PictureBox).Image = Imagen;
}
}
private void pictureBox1_MouseLeave(object sender, EventArgs e)
{
Bitmap Imagen = (Bitmap)ProjectRes.GetObject((sender as PictureBox).Name.Substring(2) + "2");
if (Imagen != null)
{
(sender as PictureBox).Image = Imagen;
}
}
private void pictureBox1_MouseClick(object sender, MouseEventArgs e)
{
Bitmap Imagen = (Bitmap)ProjectRes.GetObject((sender as PictureBox).Name.Substring(2) + "1");
if (Imagen != null)
{
(sender as PictureBox).Image = Imagen;
}
}
When i use it in a form, i NAME the created UserControl but that name seems to not pass to those functions, how can i make it inherit the name?
base.Name
Was what i was looking for. Used it instead of (sender as PictureBox).Name and it started working
Related
I have prepared more than one UserControl for a windows program in XAML. Each user control works as a separate page. But I do page transitions in navigate class. In ".xaml.cs" when calling User control
Navigate.navigate (navigate_grid, new DeviceLayout ());
I'm using the line of code. But every time I create a new user control, the background functions don't work. How do I flip one instead of invoking a new user control each time?
class Navigate
{
public static void navigate(Grid grd, UserControl uc)
{
if (grd.Children.Count > 0)
{
grd.Children.Clear();
grd.Children.Add(uc);
}
else { grd.Children.Add(uc); }
}
}
Example navigate:
public SettingsView()
{
InitializeComponent();
Navigate.navigate(navigate_grid, new SystemLayout());
}
private void system_button_click(object sender, RoutedEventArgs e)
{
Navigate.navigate(navigate_grid, new SystemLayout());
previous_page.Text = "";
current_page.Text = "SİSTEM";
next_page.Text = "UYGULAMA";
}
private void application_button_click(object sender, RoutedEventArgs e)
{
Navigate.navigate(navigate_grid, new ApplicationLayout());
previous_page.Text = "SİSTEM";
current_page.Text = "UYGULAMA";
next_page.Text = "BAĞLANTI";
}
private void connection_button_click(object sender, RoutedEventArgs e)
{
Navigate.navigate(navigate_grid, new ConnectionLayout());
previous_page.Text = "UYGULAMA";
current_page.Text = "BAĞLANTI";
next_page.Text = "ÜRÜNLER";
}
private void product_button_click(object sender, RoutedEventArgs e)
{
Navigate.navigate(navigate_grid, new ProductsLayout());
previous_page.Text = "BAĞLANTI";
current_page.Text = "ÜRÜNLER";
next_page.Text = "CİHAZLAR";
}
private void device_button_click(object sender, RoutedEventArgs e)
{
Navigate.navigate(navigate_grid, new DeviceLayout());
previous_page.Text = "ÜRÜNLER";
current_page.Text = "CİHAZLAR";
next_page.Text = "YAZICILAR";
}
private void printer_button_click(object sender, RoutedEventArgs e)
{
Navigate.navigate(navigate_grid, new PrinterLayout ());
previous_page.Text = "CİHAZLAR";
current_page.Text = "YAZICILAR";
next_page.Text = "KULLANICILAR";
}
private void users_button_click(object sender, RoutedEventArgs e)
{
Navigate.navigate(navigate_grid, new UsersLayout());
previous_page.Text = "YAZICILAR";
current_page.Text = "KULLANICILAR";
next_page.Text = "BAKIM";
}
private void maintenance_button_click(object sender, RoutedEventArgs e)
{
Navigate.navigate(navigate_grid, new MaintenanceLayout());
previous_page.Text = "KULLANICILAR";
current_page.Text = "BAKIM";
next_page.Text = "HAKKINDA";
}
private void info_button_click(object sender, RoutedEventArgs e)
{
Navigate.navigate(navigate_grid, new InfoLayout());
previous_page.Text = "BAKIM";
current_page.Text = "HAKKINDA";
next_page.Text = "";
}
}
Not sure if I get what you mean.
When you change the UserControl with the use of any of those functions eg info_button_click you can't access this funtion anymore.
That would be the case, because your XAML and .cs file are one class, containing those funcitons. If you change the UserControl (XAML) you will also change the .cs file. Therefore you can't access those functions anymore.
You could probably get the behaviour you want if you bind the commands to a viewmodel, which you could then pass through the navigation as well?
Sry, I'm still not sure what exactly it is you're doing.
I have a WPF UserControl with a certain dependency property DepProp.
I would like this property to be modified when I press Shift or Alt, and to return to the previous value when releasing the keys.
What I want is similar to a trigger, but I don't know if it's possible to set the condition to be something like "Shift key is pressed".
I know that it's possible to specify KeyBindings for the control, as far as I understood they can execute a command when a key is pressed, but don't restore the previous vlaue when the key is released.
Any idea on how to do this?
You could create an attached behavior that you can affix to some "scope" element (e.g., your UserControl) that will maintain an attached read-only property that gets inherited down the tree. Then you can simply add a Trigger on the attached property.
public sealed class AltShiftHotKeyBehavior : Behavior<FrameworkElement>
{
private const ModifierKeys AltShift = ModifierKeys.Alt | ModifierKeys.Shift;
private static readonly DependencyPropertyKey IsAltShiftPressedPropertyKey =
DependencyProperty.RegisterAttachedReadOnly(
"IsAltShiftPressed",
typeof(bool),
typeof(AltShiftHotKeyBehavior),
new FrameworkPropertyMetadata(
false,
FrameworkPropertyMetadataOptions.Inherits));
public static readonly DependencyProperty IsAltShiftPressedProperty =
IsAltShiftPressedPropertyKey.DependencyProperty;
public static bool GetIsAltShiftPressed(DependencyObject element)
{
return (bool)element.GetValue(IsAltShiftPressedProperty);
}
protected override void OnAttached()
{
base.OnAttached();
var element = this.AssociatedObject;
element.AddHandler(
FrameworkElement.LoadedEvent,
(RoutedEventHandler)OnLoaded,
handledEventsToo: true);
element.AddHandler(
FrameworkElement.UnloadedEvent,
(RoutedEventHandler)OnUnloaded,
handledEventsToo: true);
element.AddHandler(
UIElement.PreviewKeyDownEvent,
(KeyEventHandler)OnKey,
handledEventsToo: true);
element.AddHandler(
UIElement.PreviewKeyUpEvent,
(KeyEventHandler)OnKey,
handledEventsToo: true);
element.AddHandler(
UIElement.LostKeyboardFocusEvent,
(KeyboardFocusChangedEventHandler)OnLostKeyboardFocus,
handledEventsToo: true);
var window = element as Window;
if (window != null)
{
window.Activated += OnWindowActivated;
window.Deactivated += OnWindowDeactivated;
}
CheckToggledState();
}
protected override void OnDetaching()
{
ClearToggledState();
base.OnDetaching();
var element = this.AssociatedObject;
element.RemoveHandler(
FrameworkElement.LoadedEvent,
(RoutedEventHandler)OnLoaded);
element.RemoveHandler(
FrameworkElement.UnloadedEvent,
(RoutedEventHandler)OnUnloaded);
element.RemoveHandler(
UIElement.PreviewKeyDownEvent,
(KeyEventHandler)OnKey);
element.RemoveHandler(
UIElement.PreviewKeyUpEvent,
(KeyEventHandler)OnKey);
element.RemoveHandler(
UIElement.LostKeyboardFocusEvent,
(KeyboardFocusChangedEventHandler)OnLostKeyboardFocus);
var window = element as Window;
if (window != null)
{
window.Activated -= OnWindowActivated;
window.Deactivated -= OnWindowDeactivated;
}
}
private void CheckToggledState()
{
var element = this.AssociatedObject;
if (element.IsLoaded &&
element.IsKeyboardFocusWithin &&
Keyboard.PrimaryDevice.Modifiers == AltShift)
{
element.SetValue(IsAltShiftPressedPropertyKey, true);
}
else
{
element.ClearValue(IsAltShiftPressedPropertyKey);
}
}
private void ClearToggledState()
{
this.AssociatedObject.ClearValue(IsAltShiftPressedPropertyKey);
}
private void OnLoaded(object sender, RoutedEventArgs e)
{
CheckToggledState();
}
private void OnUnloaded(object sender, RoutedEventArgs e)
{
ClearToggledState();
}
private void OnWindowActivated(object sender, EventArgs e)
{
CheckToggledState();
}
private void OnWindowDeactivated(object sender, EventArgs e)
{
ClearToggledState();
}
private void OnLostKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
{
CheckToggledState();
}
private void OnKey(object sender, KeyEventArgs e)
{
CheckToggledState();
}
}
I want to simulate a drag/drop event in WPF.
For this I'll need to gain access to the data stored in the "Drag/Drop buffer" and also I'll need to create a DragEventArgs.
I noticed that the DragEventArgs is sealed and has no public ctor.
So my questions are:
1. how can I create an instance of DragEventArgs?
2. How can I gain access to the drag/drop buffer?
i recently do this! i simulated drag/drop with MouseDown, MouseMove and MouseUp events. for example for my application, i have some canvases that i want to drag and drop them. every canvas has an id. in MouseDown event, i buffer its id and use it in MouseMove and MouseUp event. Desktop_Canvas is my main Canvas that contains some canvases. these canvases are in my dictionary (dic).
here is my code:
private Dictionary<int, Win> dic = new Dictionary<int, Win>();
private Point downPoint_Drag = new Point(-1, -1);
private int id_Drag = -1;
private bool flag_Drag = false;
public class Win
{
public Canvas canvas = new Canvas();
public Point downpoint = new Point();
public Win()
{
canvas.Background = new SolidColorBrush(Colors.Gray);
}
}
private void Desktop_Canvas_MouseMove(object sender, MouseEventArgs e)
{
try
{
Point movePoint = e.GetPosition(Desktop_Canvas);
if (flag_Drag && downPoint_Drag != new Point(-1, -1))
{
double dy1 = movePoint.Y - downPoint_Drag.Y, x = -1, dx1 = movePoint.X - downPoint_Drag.X, y = -1;
downPoint_Drag = movePoint;
if (x == -1)
x = Canvas.GetLeft(dic[id_Drag].canvas) + dx1;
if (y == -1)
y = Canvas.GetTop(dic[id_Drag].canvas) + dy1;
Canvas.SetLeft(dic[id_Drag].canvas, x);
Canvas.SetTop(dic[id_Drag].canvas, y);
}
}
catch
{
MouseEventArgs ee = new MouseEventArgs((MouseDevice)e.Device, 10);
Desktop_Canvas_MouseLeave(null, ee);
}
}
private void Desktop_Canvas_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
try
{
downPoint_Drag = new Point(-1, -1);
id_Drag =-1;
flag_Drag = false;
}
catch
{
MouseEventArgs ee = new MouseEventArgs((MouseDevice)e.Device, 10);
Desktop_Canvas_MouseLeave(null, ee);
}
}
private void Desktop_Canvas_MouseLeave(object sender, MouseEventArgs e)
{
MouseButtonEventArgs ee = new MouseButtonEventArgs((MouseDevice)e.Device, 10, MouseButton.Left);
Desktop_Canvas_MouseLeftButtonUp(null, ee);
}
void canvas_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
downPoint_Drag = e.GetPosition(Desktop_Canvas);
int hoverId = HoverWin(downPoint_Drag);
flag_Drag = true;
id_Drag = hoverId;
dic[id_Drag].downpoint = new Point(downPoint_Drag.X, downPoint_Drag.Y);
}
private int HoverWin(Point p)
{
foreach (int i in dic.Keys)
{
if (dic[i].canvas.IsMouseOver)
return i;
}
return -1;
}
I have a MediaElement, but how can I call a function when the property "position" of MediaElement changes?
Position is not a DependencyProperty.
You can use a DispatchTimer. This article provides some good insight on how to get this working. MediaElement and More with WPF.
Here is some sample code that I took from a project I'm working on. It shows the position of the video using a slider control and allows the user to change the position.
I'm a bit of a newbie too, so it is possible that some of it is wrong (feel free to comment on problems in the comments section :).
private DispatcherTimer mTimer;
private bool mIsDragging = false;
private bool mTick = false;
private void UserControl_Loaded(object sender, RoutedEventArgs e)
{
medPlayer.Play();
medPlayer.Stop();
mTimer = new DispatcherTimer();
mTimer.Interval = TimeSpan.FromMilliseconds(100);
mTimer.Tick += new EventHandler(mTimer_Tick);
mTimer.Start();
}
void mTimer_Tick(object sender, EventArgs e)
{
if (!mIsDragging)
{
try
{
mTick = true;
sldPosition.Value = medPlayer.Position.TotalMilliseconds;
}
finally
{
mTick = false;
}
}
}
private void sldPosition_DragStarted(object sender, System.Windows.Controls.Primitives.DragStartedEventArgs e)
{
mIsDragging = true;
medPlayer.Pause();
}
private void sldPosition_DragCompleted(object sender, System.Windows.Controls.Primitives.DragCompletedEventArgs e)
{
mIsDragging = false;
if (chkPlay.IsChecked.Value)
medPlayer.Play();
}
private void sldPosition_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
{
var pos = TimeSpan.FromMilliseconds(e.NewValue);
lblPosition.Content = string.Format("{0:00}:{1:00}", pos.Minutes, pos.Seconds);
if (!mTick)
{
medPlayer.Position = TimeSpan.FromMilliseconds(sldPosition.Value);
if (medPlayer.Position == medPlayer.NaturalDuration.TimeSpan)
{
chkPlay.IsChecked = false;
medPlayer.Stop();
}
}
}
I am currently porting a windows forms application to wpf. There is a listbox with filenames in it. It should be possible to drag (multiple) items to the windows explorer.
This was easy in with the old windows form, but I can't find a way how this can be done in wpf.
This was the code I used with windows forms:
void listView1_ItemDrag(object sender, ItemDragEventArgs e)
{
string[] files = GetSelection();
if (files != null)
{
DoDragDrop(new DataObject(DataFormats.FileDrop, files), DragDropEffects.Copy );
}
}
Ok... I found a solution for my Problem, based on this tutorial:
private void List_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
// Store the mouse position
startPoint = e.GetPosition(null);
}
private void List_MouseMove(object sender, MouseEventArgs e)
{
// Get the current mouse position
Point mousePos = e.GetPosition(null);
Vector diff = startPoint - mousePos;
if (e.LeftButton == MouseButtonState.Pressed &&
Math.Abs(diff.X) > SystemParameters.MinimumHorizontalDragDistance &&
Math.Abs(diff.Y) > SystemParameters.MinimumVerticalDragDistance)
{
if (listView1.SelectedItems.Count == 0)
{
return;
}
string[] files = GetSelection();
string dataFormat = DataFormats.FileDrop;
DataObject dataObject = new DataObject(dataFormat, files);
DragDrop.DoDragDrop(listView1, dataObject, DragDropEffects.Copy);
}
}
Try checking out Bea Stollnitz' blog for a thorough implementation of drag and drop in WPF.
Bea Stollnitz - How can I drag and drop items between data bound ItemsControls?
try this code that help u to solve your problem
public partial class MainWindow : Window
{
List<string> file = new List<string>();
public MainWindow()
{
InitializeComponent();
file.Add(#"D:\file1.txt");
file.Add(#"D:\folder1");
file.Add(#"D:\folder2");
file.Add(#"D:\folder3");
lstTest.DataContext = file;
}
private Point start;
private void lstTest_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
this.start = e.GetPosition(null);
}
private void lstTest_MouseMove(object sender, MouseEventArgs e)
{
Point mpos = e.GetPosition(null);
Vector diff = this.start - mpos;
if (e.LeftButton == MouseButtonState.Pressed && Math.Abs(diff.X) > SystemParameters.MinimumHorizontalDragDistance && Math.Abs(diff.Y) > SystemParameters.MinimumVerticalDragDistance)
{
if (this.lstTest.SelectedItems.Count == 0)
{
return;
}
string[] Files = new string[file.Count] ;
for (int i = 0; i < file.Count; i++)
{
Files[i] = file[i];
}
string dataFormat = DataFormats.FileDrop;
DataObject dataObject = new DataObject(dataFormat, (lstTest.SelectedItems.Cast<string>()).ToArray<string>());
DragDrop.DoDragDrop(this, dataObject, DragDropEffects.Copy);
}
}
}
make sure you checked ( checkbox ) the multiple selection option