I want this functionalitymy combobox has multiple values. for example: RJ11, RJ12, RJ13 and so on.
AutoCompleteMode set to append and AutoCompleteSource set to listItems. all i want is when i type rj in combobox it will suggest me rj11 in combobox's text field and when i press DOWN ARROW key it should select rj11 but what it is doing is it keep searching for next possible match.
i tried :
private void comboBox1_KeyDown(object sender, KeyEventArgs e)
{
if(e.KeyCode == Keys.Down)
{
comboBox1.SelectedIndex = comboBox1.FindStringExact(comboBox1.Text);
}
}
but it is not working.
i am very new to winform and programing.
please help.
and yeah sorry for my bad english.
You can try to refer to the following code to select the index in a combobox by using down key.
We can override the ProcessCmdkey method in your form.
Code:
protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
if ((this.ActiveControl == comboBox1) && (keyData == Keys.Down))
{
comboBox1.SelectedIndex = comboBox1.FindStringExact(comboBox1.Text);
return true;
}
else
{
return base.ProcessCmdKey(ref msg, keyData);
}
}
Related
I have a tree of family members. I am attempting to provide a SEARCH facility which will allow me to select all the tree items where person name contains the SEARCH name. See this screen shot, though the first item matches RAJA it is not selected.
Now when I click on the LOCATE button again, the selections are correct as you can see.
This is the code for LOCATE BUTTON CLICKED.
#FXML
void onLocateClicked(MouseEvent event) {
childrenTreeView.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
childrenTreeView.getSelectionModel().clearSelection();
String tmpLocateString = txtLocate.getText().toLowerCase();
TreeItem<APerson> item = childrenTreeView.getRoot();
item.setExpanded(true);
System.out.println("Locate ->"+tmpLocateString+" Root value = "+item.getValue().getPersonName());
if (item == null) {
// Don't do anything
return;
}
if (item.getValue().getPersonName().toLowerCase().contains(tmpLocateString)){
System.out.println("Item ->"+item+" MATCHES (LocateClicked)");
childrenTreeView.getSelectionModel().select(item);
}
doSearch(item, tmpLocateString);
}
private void doSearch(TreeItem<APerson> item, String tmpLocateString) {
System.out.println("Current Parent :" + item.getValue());
if (item != childrenTreeView.getRoot()) {
if (item.getValue().getPersonName().toLowerCase().contains(tmpLocateString)){
System.out.println("Item ->"+item+" MATCHES (in doSearch)");
childrenTreeView.getSelectionModel().select(item);
}
}
for(TreeItem<APerson> child: item.getChildren()){
String personName = child.getValue().getPersonName();
if (personName.toLowerCase().contains(tmpLocateString)) {
childrenTreeView.getSelectionModel().select(child);
}
if(child.getChildren().isEmpty()){
System.out.println(" No Children for this node : "+personName);
} else {
doSearch(child, tmpLocateString);
}
}
}
After the first error, the selections work correctly for all other searches..... Can anyone guess what is wrong? "doSearch" function is recursive to walk thru entire tree.
Thanks for your help, in advance.
Hornigold
This is the change I did to onLocateClicked but it did not work.
void onLocateClicked(MouseEvent event) {
TreeItem<APerson> item = childrenTreeView.getRoot();
if (item == null) {
// Don't do anything
return;
}
String tmpLocateString = txtLocate.getText().toLowerCase();
childrenTreeView.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
childrenTreeView.getSelectionModel().clearSelection();
item.setExpanded(true);
System.out.println("Locate ->"+tmpLocateString+" Root value = "+item.getValue().getPersonName());
if (item.getValue().getPersonName().toLowerCase().contains(tmpLocateString)){
System.out.println("Item ->"+item+" MATCHES (LocateClicked)");
childrenTreeView.getSelectionModel().select(item);
}
doSearch(item, tmpLocateString);
}
Given a TableView, i need to detect the doubleclick on a cell.
tableView.setOnMouseClicked(new EventHandler<MouseEvent>()
{
#Override
public void handle(MouseEvent event)
{
if(event.getClickCount()>1)
{
System.out.println("double clicked!");
}
}
});
How to determine the cell on which the mouse has been clicked?
Code example.
Run the "Example 12-11: Alternative Solution Of Cell Editing" of official tableview tutorial.
Replace the followings:
table.setEditable(false);
Callback<TableColumn, TableCell> cellFactory =
new Callback<TableColumn, TableCell>() {
public TableCell call(TableColumn p) {
TableCell cell = new TableCell<Person, String>() {
#Override
public void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
setText(empty ? null : getString());
setGraphic(null);
}
private String getString() {
return getItem() == null ? "" : getItem().toString();
}
};
cell.addEventFilter(MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent event) {
if (event.getClickCount() > 1) {
System.out.println("double clicked!");
TableCell c = (TableCell) event.getSource();
System.out.println("Cell text: " + c.getText());
}
}
});
return cell;
}
};
No need to EditingCell since your cells are uneditable. Cell factory is used for cell rendering. So one can put any node/control other than default Labeled using cell's setGraphics() method. IMO you cannot access the default cell directly so you should define your own cell factory to be able to put event filter on cell.
JavaFX allows you to set up multiple listeners per cell (I'm not saying that this is good or bad, just that you can). Each listener will execute your code if you have code set to execute a response to the specific listener for the specific column/row. To capture cell mouse clicks, I use the following:
table.setEditable(true);
table.getSelectionModel().setCellSelectionEnabled(true); // selects cell only, not the whole row
table.setOnMouseClicked(new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent click) {
if (click.getClickCount() == 2) {
#SuppressWarnings("rawtypes")
TablePosition pos = table.getSelectionModel().getSelectedCells().get(0);
int row = pos.getRow();
int col = pos.getColumn();
#SuppressWarnings("rawtypes")
TableColumn column = pos.getTableColumn();
String val = column.getCellData(row).toString(); System.out.println("Selected Value, " + val + ", Column: " + col + ", Row: " + row);
if ( col == 2 ) { ... do something ... }
if ( col == 5 ) { ... do something ... }
if ( col == 6 ) { ... do something ... }
if ( col == 8 ) { ... do something ... }
}
}
});
You can see from the above code, on the columns I want to do something based on a mouse click, I have code:
if ( col == <int> ) { ... do something ... }
I also have those columns set to not allow editing:
thisCol.setEditable(false);
The rows that I want to edit I have .setEditable(true) but don't have a response included with a mouse click.
Cell editing defaults to 2 mouse clicks. You can change the above code to capture different mouse events on a cell, so you can still edit the cell with 2 mouse clicks, or open a URL, dialog box, etc., with any other mouse event determined by you. TableView allows you to determine your own functionality based on your imagination and programming skills. You're not stuck with "I can either edit it, or fire a mouse event with it." You can do both :)
Add the following in the body of your listener, with T the type of your table record :
#SuppressWarnings("rawtypes")
ObservableList<TablePosition> cells = tableView.getSelectionModel().getSelectedCells();
for( TablePosition< T, ? > cell : cells )
{
System.out.println( cell.getColumn());
}// for
Create your cell using a cell factory and in the cell factory which creates the cell node, place an mouse event handler or filter on the node rather than the tableView.
In my case i use next code
tableViewObject.setOnMouseClicked(new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent t) {
if (t.getClickCount() == 2 && getSelectedItem() != null) {
SMPBLogger.logInfo("Double cliked", Boolean.TRUE);
if (listener != null) {
listener.doubleClicked(tableViewObject.this,getSelectedItem());
}
}
}
});
The app is like a small dictionary. I have a listbox and a textbox. The list box is already filled with words and when there is any entry in the textbox the listbox is refilled again with words starting with the letters in the textbox. I have a listbox SelectionChanged event implemented when the user clicks on a word its meaning appears. The problem is when user selects a word from the list and then types something in the textbox, listBox SelectionChanged event is called i dont want this to happen because at this point of time my listbox's selected item is empty.I would like to have a event that is fired only when user selects something from the listbox. It should not be fired when the content of the listbox changes. Thank you
You can use
1.if (lstWords.SelectedItem != null)
2.lstWords.SelectedIndex = -1;
for e.g. following is the source code for text changed event and list selection change event
private void textBox1_TextChanged(object sender, TextChangedEventArgs e)
{
try
{
if (textBox1.Text.ToString().Equals(""))
{
XmlDictionaryRepository test = new XmlDictionaryRepository();
lstWords.ItemsSource = test.GetWordList(categorySelected,xmlFileName);
}
else
{
XmlDictionaryRepository test = new XmlDictionaryRepository();
lstWords.ItemsSource = test.GetMatchWordList(categorySelected, textBox1.Text.ToString(),xmlFileName);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), (((PhoneApplicationFrame)Application.Current.RootVisual).Content).ToString(), MessageBoxButton.OK);
}
}
private void lstWords_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
try
{
if (lstWords.SelectedItem != null)
{
string wordSelected = ((Glossy_Test.Dictionary)(lstWords.SelectedItem)).Word;
if (lstWords.SelectedItem != null)
{
NavigationService.Navigate(new Uri(string.Format("/DescribeWord.xaml?param1={0}¶m2={1}", wordSelected, categorySelected), UriKind.Relative));
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), (((PhoneApplicationFrame)Application.Current.RootVisual).Content).ToString(), MessageBoxButton.OK);
}
finally
{
// lstWords.SelectedIndex = -1;
}
}
I want to create a wizard control from the pivot control. To achieve this I need to stop the pivot looping. I want to stop the pivot control moving forward from the last item to the first and backwards from the first to the last.
I'm pretty sure I should be able to intercept the manipulations e.g. cancel if I detect a right to left manipulation on the last pivot item. I can capture this in ManipulationDelta but don't know how to cancel the manipulation.
I have tried setting e.Handled = True but it didn't work.
I tried to set IsHitTestVisisble to false but this kills all manipulations. I tried setting it back to true in ManipulationCompleted but this then allows all manipulations.
Any ideas?
Cheers
Steve
The pivot is not designed to be used as a wizard and does not support stopping it's looping behaviour as this would create an inconsistent UX for users.
If you really must create a wizard do it with multiple pages.
Don't use a Pivot for a Wizard. Create your own transitions instead.
I couldn't reply to your comment on Matts answer but I just wanted to point you to this:
http://forty3degrees.wordpress.com/2011/07/19/creating-a-swipable-contentcontrol/
It's the last entry in my very neglected blog and should provide a good base for creating a wizard using a pivot style swipe.
Calum.
EDIT: I tried to do what you wanted with the pivot but couldn't find a way to stop it looping. The only way that I can think of to achieve this would be to derive a custom control from Pivot. Unfortunately SelectedIndex/SelectedItem are not virtual so you would need to hide them (with the new modifier) and reproduce the logic from the base class.
It's just an alternative solution I've posted here - you can try to make use of XNA framework TouchPanel and Touch.FrameReported Event:
using Microsoft.Xna.Framework.Input;
public MainPage()
{
InitializeComponent();
myPivot.IsHitTestVisible = false; // disable your Pivot
Touch.FrameReported += Touch_FrameReported;
TouchPanel.EnabledGestures = GestureType.HorizontalDrag;
}
TouchPoint first;
private void Touch_FrameReported(object sender, TouchFrameEventArgs e)
{
TouchPoint mainTouch = e.GetPrimaryTouchPoint(this);
if (mainTouch.Action == TouchAction.Down)
first = mainTouch;
else if (mainTouch.Action == TouchAction.Up && TouchPanel.IsGestureAvailable)
{
if (mainTouch.Position.X < first.Position.X)
{
if (myPivot.SelectedIndex < myPivot.Items.Count - 1)
myPivot.SelectedIndex++;
}
else if (mainTouch.Position.X > first.Position.X)
{
if (myPivot.SelectedIndex > 0)
myPivot.SelectedIndex--;
}
}
}
Thought it would probably work from WP7.1 as TouchPanel is available from that version of the OS.
If you absolutely want to keep the Pivot from looping, here is a quick and dirty hack:
int previousSelectedIndex = 0;
public PageWithPivot()
{
InitializeComponent();
pivot.SelectionChanged += new SelectionChangedEventHandler(pivot_SelectionChanged);
}
private void pivot_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (pivot.SelectedIndex == 0 && previousSelectedIndex == <number Of screens - 1>)
pivot.SelectedIndex = <number Of screens - 1>;
previousSelectedIndex = pivot.SelectedIndex;
}
This causes your PivotControl to jump back to the last pivotItem. Not very pretty but works.
This is so weird because it only works in the Emulator. I guess you shan't mess with the UI
You can use MVVM:
<phone:Pivot Foreground="Black"
Name="pivot1"
Title="AIDE"
SelectedIndex="{Binding SelectedItem, Mode=TwoWay}">
Cs:
private class HelpViewModel : ViewModelBase
{
public HelpViewModel()
{
}
private int _SelectedItem = 0;
public int SelectedItem
{
get
{
return _SelectedItem;
}
set
{
if (_SelectedItem != value)
{
if (value == 3)
_SelectedItem = 0;
else
_SelectedItem = value;
RaisePropertyChanged(() => SelectedItem);
}
}
}
}
public AppHelpPivot()
{
InitializeComponent();
LayoutRoot.DataContext = new HelpViewModel();
}
In a SL4 application i need to restyle my TabItems (actually add a button in the header).
So i took the TabItem's control template from here and added the functionality i wanted.
This seems to work fine, (i could dynamically add tabitems) with one exception:
i think this posted control template is behaving somehow "arbitrary": every time the mouse hoovers over a non selected TabItem header, this gets selected WHITHOUT clicking!! (afaik this is not the default behavior: the user user has to click a header to make this tabitem the selected one).
I tried to find why it is behaving like this, with no luck!
Is there someone who can enlighten my darkness???
Thanks in advance!
Well it turns out the error was not in the control template but in the class, the style was applied to.
In detail: the class the style was applied to is the following (in it you will see my comment about the "wrong behavior"):
public class WorkspaceViewModel : TabItem
{
public WorkspaceViewModel()
{
DefaultStyleKey = typeof(WorkspaceViewModel);
}
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
Button closeButtonSel = base.GetTemplateChild("PART_CloseTopSelected") as Button;
Button closeButtonUnsel = base.GetTemplateChild("PART_CloseTopUnSelected") as Button;
if (closeButtonSel != null)
closeButtonSel.Click += new RoutedEventHandler(closeButtonSel_Click);
if (closeButtonUnsel != null)
closeButtonUnsel.Click += new RoutedEventHandler(closeButtonSel_Click);
//this part is causing the effect i was complaining about!
//and has to be removed
this.MouseEnter += delegate(object sender, MouseEventArgs e)
{
IsSelected = true;
};
}
void closeButtonSel_Click(object sender, RoutedEventArgs e)
{
//this is the close request method used in the CloseTabItemCommand
OnRequestClose();
}
#region CloseTabItemCommand
private RelayCommand closeTabItemCommand;
public ICommand CloseTabItemCommand
{
get
{
if (this.closeTabItemCommand == null)
this.closeTabItemCommand = new RelayCommand(p => this.OnRequestClose(), p => this.CanCloseTabItem());
return this.closeTabItemCommand;
}
}
private bool CanCloseTabItem()
{
return true;
}
public event EventHandler RequestClose;
private void OnRequestClose()
{
if (RequestClose != null)
RequestClose(this, EventArgs.Empty);
}
#endregion
}