I want to create 2 Textboxes (txt1, txt2) and when I write in txt1 then txt2 should reflect the same text what i typed in txt1. For ex. When we create a new Solution in Visual Studio Professional, what name we give to Project, same name appears for Solution. But if we edit solution name, link between the 2 textboxes breaks.
I do have some idea about it, to do it with textChange event or in fact many similar events, but not sure that they are the best methods.
I am using Winforms, C# 4.0, Visual Studio 2010 (if this info matters)
If my question is not clear, just make a comment I will try to elaborate.
Thanks.
With the given definition of the requirement, adding TextChanged EventHandlers is the way to go.
private void txt1_TextChanged(object sender, EventArgs e)
{
txt2.Text = txt1.Text;
}
private void txt2_TextChanged(object sender, EventArgs e)
{
txt1.Text = txt2.Text;
}
Consider adding an event handler for txt1_TextChanged and txt2_KeyPress.
txt1_TextChanged would assign txt2.Text: txt2.Text = "c:\" + txt1.Text;
txt2_KeyPress would unsubscribe txt1_TextChanged: txt1.TextChanged -= txt1_TextChanged;.
I solved it, so thought to post it here
txt1_TextChanged(obje....)
{
txt2.Text = txt1.Text;
}
txt2_TextChanged(objec...)
{
if(txt2.Focused)
{
txt1.TextChanged -= new EventHandler(txt1_TextChanged);
}
}
Hope it helps.
Related
I'm working on a virtual keyboard, but i struggle to send Keys. Nothing happens, except when i hard-add them to the textbox. Here's my code
public static void Send(Key key)
{ //Found online
var e = new KeyEventArgs(Keyboard.PrimaryDevice, Keyboard.PrimaryDevice.ActiveSource, 0, key)
{
RoutedEvent = Keyboard.KeyDownEvent
};
InputManager.Current.ProcessInput(e);
}
private void ClickOnKey(object sender, RoutedEventArgs e)
{
CustomButton cb = sender as CustomButton;
string text = cb.text;
Console.WriteLine(text);
element_to_focus.Focus(); //The textbox
Send(translate_string_to_key(text));
}
ProcessInput seems to only raise the appropriate key-related events, but will not actually modify the text.
If you really want to simulate key presses, you'll need to leverage p/invoke and use SendInput. Luckily, someone's already done the p/invoke work for us and has made their work available:
https://archive.codeplex.com/?p=inputsimulator
It's also available as a NuGet package (I found two versions):
https://www.nuget.org/packages/InputSimulator/
https://www.nuget.org/packages/InputSimulatorPlus/
I'm working on a Windows Forms Application where I want to load Reports into a Reportviewer after a click on a Button.
This is the Event that gets triggered by pressing on the button in the Code behind of the Windows Form:
private void button1_Click(object sender, EventArgs e)
{
Telerik.Reporting.InstanceReportSource reportSource = new
Telerik.Reporting.InstanceReportSource();
reportSource.ReportDocument = new Reportlibrary.Report1();
reportSource.Parameters.Add(new Telerik.Reporting.Parameter("OrderNumber","123456789"));
reportViewer1.ReportSource = reportSource;
reportViewer1.RefreshReport();
}
The problem now is that I have no Idea how I can access / get the parameter I added before Refreshing the Reportviewer.
The Report already has set a Datasource. I don't know if this matters.
This is what I have right now. I've tried everything and I'm just not getting further.
public Report1()
{
InitializeComponent();
Position[] all = new Position[]{
new Position("Test", "Test","test"),
};
this.DataSource = all;
MessageBox.Show("Number: " +
this.Report.ReportParameters["OrderNumber"].Value.ToString());
}
Is there any way to get this parameter straight after InitializeComponent(); ?
Do I need to add another Event to the report to access it? If yes which on is the best way to do this?
Any help very apreciated.
Thank you
Set the parameters of the report on an instance of the report itself (not the report source), such as:
TopPageViews report = new TopPageViews();
report.ReportParameters["StartDate"].Value = new DateTime(2013, 3, 1);
report.ReportParameters["EndDate"].Value = new DateTime(2013, 3, 1);
InstanceReportSource reportSource = new InstanceReportSource();
reportSource.ReportDocument = report;
this.reportViewer1.ReportSource = reportSource;
this.reportViewer1.RefreshReport();
In your report constructor, after InitializeComponent, subscribe a handler to the ItemDataBinding event:
this.ItemDataBinding += TopPageViews_ItemDataBinding;
And in your handler, you can obtain the value as you normally would:
DateTime startDateParm = (DateTime)this.ReportParameters["StartDate"].Value;
You can use the debugger to see the value.
i know its an old question but after experiencing the same issue this how i did it and passed two parameter of date.
private void button1_Click(object sender, EventArgs e)
{
Report2 report = new Report2();
report.ReportParameters["datefrom"].Value
=dateTimePicker1.Value;
report.ReportParameters["dateto"].Value = dateTimePicker2.Value;
var rSource = new InstanceReportSource();
rSource.ReportDocument = report;
reportViewer1.ReportSource = rSource;
reportViewer1.RefreshReport();
}
I have created an instance of a ToolStripMenuItem and wanted to add it as a submenu to two different menus on my form (to a contextmenu and a menu strip). I know how to get it to work but I am wondering why this doesn't work.
private static string[] parameters = { "itemOne", "itemTwo", "itemThree"};
private void MainForm_Load(object sender, EventArgs e)
{
foreach (string s in parameters)
{
ToolStripMenuItem addThis = new ToolStripMenuItem(s);
existingToolStripMenuItem.DropDownItems.Add(addThis);
existingMenuItem.DropDownItems.Add(addThis);
}
}
I noticed it works fine if I comment out one of the DropDownItems.Add() statements or if I create two separate instances. Why does it do this?
If you learn about the implementation of ToolStripItemCollection.Add, you will find that the second call existingMenuItem.DropDownItems.Add(addThis); removes addThis from existingToolStripMenuItem.DropDownItems.
So learning how to use decompilers such as ILSpy is critical for .NET developers,
http://wiki.sharpdevelop.net/ilspy.ashx
A possible workaround is to create two separate instances as you found out. If you intend to connect the two instances together, you can use ActionList,
http://www.lextm.com/2012/04/packaging-crads-actionlist-for-net-via-nuget/
I've been trying to google this but have been unable to find a solution that works for me.
I have a DataGrid that is displaying some info from a SQL table that the client dosn't know about.
The client just sends a request to the server and gets a List<SomeClass> as a response that it then displays in a DataGrid.
I need to detect when the user makes change to a row and I need the new values that the user entered.
Currently I'm using RowEditEnding event. And the method that handles this event can then:
private void editRowEventHandler(object sender, DataGridRowEditEndingEventArgs e)
{
SomeClass sClass = e.Row.DataContext as SomeClass;
// Send sClass to the server to be saved in the database...
}
This gives me the row that was being edited. But it gives me the row before the changes, and I'm unable to figure out how to get the row after the changes happen.
Is there anyone here that knows how I can do this or can point me in a direction where I might be able to find out?
See the discussion here, to avoid reading out cell-by-cell.
private void OnRowEditEnding(object sender, DataGridRowEditEndingEventArgs e)
{
DataGrid dataGrid = sender as DataGrid;
if (e.EditAction == DataGridEditAction.Commit) {
ListCollectionView view = CollectionViewSource.GetDefaultView(dataGrid.ItemsSource) as ListCollectionView;
if (view.IsAddingNew || view.IsEditingItem) {
this.Dispatcher.BeginInvoke(new DispatcherOperationCallback(param =>
{
// This callback will be called after the CollectionView
// has pushed the changes back to the DataGrid.ItemSource.
// Write code here to save the data to the database.
return null;
}), DispatcherPriority.Background, new object[] { null });
}
}
}
In your case, you are trying to detect the change in object. It comes down to the properties of the SomeClass, thus you need to focus on "Cell" instead of "Row"
Assuming your datagrid is resultGrid, i come up with the below code:
resultGrid.CellEditEnding += resultGrid_CellEditEnding;
void resultGrid_CellEditEnding(object sender, DataGridCellEditEndingEventArgs e)
{
var yourClassInstance = e.EditingElement.DataContext;
var editingTextBox = e.EditingElement as TextBox;
var newValue = editingTextBox.Text;
}
the "e" also contains information about Row and Column of the Cell. Thus you will know which editor the cell is using. In this case, i assume that it is a textbox.
Hope it help.
I asked this question in a similar post but there have been significant updates since then, but still no results so I will try to re-ask the question with the updated information.
Basically I have a pivot view with 4 pivot items. If I create the scenario where I hit the windows key then rapidly press the back key my application will reopen without reconstructing (this is the expected outcome). The functionality of the application is there. I can press application bar buttons etc.
What doesn't work is the pivot items are frozen. If I was on Pivot item A and I press the start and back button quickly I come back to Pivot Item A. If I try to switch Pivot Items, the screen does not update, its "frozen" on Pivot Item A BUT the functionality of Pivot Item B is there. (I know this because the application bar Icons for Pivot Item B are now showing).
I have read many articles on proper tombstoning scenarios and how to approach this problem. My data IS being tombstoned correctly, and upon reactivation the tombstoned data works. No objects are null so I don't have any exceptions being thrown at me.
I check to see if I need to reload the Main ViewModel (I don't need to in this case so the UI elements being created initially are not being re created).
What does fix the problem however is if the application is reconstructed. Lets say I go to the marketplace from my app, let it finish loading and press back, My application will be refreshed and working fine since it properly deactivated and reconstructed istelf. I don't rely on constructors doing all the work so I am not missing any key elements not being set when they aren't fired in the windows/back button scenario.
Does anyone have any idea why my screen would not be updating?
constructor/loaded event/on navigated to event
public MainPage()
{
InitializeComponent();
this.Loaded += new RoutedEventHandler(MainPage_Loaded);
}
private void MainPage_Loaded(object sender, RoutedEventArgs e)
{
if (App.firstTimeLoading == true)
{
App.firstTimeLoading = false;
}
BuildApplicationBar();
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
this.DataContext = App.ViewModel;
App.viewIdentifier = StringResource.MainPageView;
if (!App.ViewModel.IsDataLoaded)
{
App.ViewModel.LoadData();
String bookTitle;
App.Parser.appBookInfoDict.TryGetValue(CPlayerInventoryKeys.kInventoryKeyTitleShortTitle, out bookTitle);
PivotBackground.Title = bookTitle.ToUpper();
CreatePivotItems();
}
if (App.playerController.chapterPlayer.Source == null)
App.restoreStateClass.RestoreState();
//applies the proper background image
if (App.isDarkTheme)
{
BitmapImage bitmapImage = new BitmapImage(new Uri(StringResource.PanoramaBlackImage, UriKind.Relative));
BackgroundImage.ImageSource = bitmapImage;
BackgroundImage.Opacity = .85;
}
else
{
BitmapImage bitmapImage = new BitmapImage(new Uri(StringResource.PanoramaWhiteImage, UriKind.Relative));
BackgroundImage.ImageSource = bitmapImage;
BackgroundImage.Opacity = .5;
}
if (App.firstTimeLoading == false && PivotBackground.SelectedItem != SuggestedPivotItem)
BuildApplicationBar();
else if (PivotBackground.SelectedItem == SuggestedPivotItem)
{
BuildMarketPlaceApplicationBar();
}
base.OnNavigatedTo(e);
}
I found the answer. Since I had a media element open (play/paused) and I was implementing the "non tombstoned" method of hitting windows key and back button very quickly, the media element source was corrupt. Even though I reset this source, apparently it can be ignored and not function properly. All I had to do was add a line of code to the Application Deactivated handler.
private void Application_Deactivated(object sender, DeactivatedEventArgs e)
{
App.MainAudioPlayer.Source = null; //(only showing line added)
}
The behavior you are describing seems to be solely related to the way you are manipulating data internally and constructing your layout. I tested this both in the emulator and on a couple of physical devices, both producing normal output (even when bound to a view model).
Try creating a new Pivot-based application (without all your data - just using the default template) and see if the problem persists. Also worth mentioning - are you testing on a device or in the emulator?
Are you using transitions from the toolkit?
Are they defined in XAML?
If so that could be the issue. There's a bug which is fixed in the next version.
The solution for now is to remove the transitions or define them in code.