Hi all guys
i am new to C# and .net stuff as i was working with C++ for many years
i want to know that is it possibhle that i can have an MDI Child Form on my main Form and want it to return me some data
like for example i have my main Form has a "settings" button
when i click on "settings" button it should show a small MDI child form which has all the settings and return some data (i'll take care of data but i dont know how to return through a form)
thnx in advance
Well...as far as 'returning' data from the Form, you can't do that as a "return" call because Forms are objects, so the constructor cannot have a return type, however you can have a method that will set a variable in another class (that is public) to the data you want to return ... You can call this method when the form is closing.
I am not entirely sure if you can achieve the 'small form INSIDE another form' without creating your own control. I am not sure how practical/possible this would be, but you can try 1 of the following: extend the Control class (to make a control) or override the OnPaint of a new Form. This way you can define where stuff goes, and what gets drawn onto the screen.
I have used this piece of code in the past, which worked great.
in my example frmA was an MDIchildform of the main (MDIparent)
frmA()
{
public int a=0;
private btn_click(blabla)
{
frmOptions options = new frmOptions(this);
dialog.ShowDialog();
if(dialog.DialogResult == DialogResult.Yes)
{
dosomethingwith(a);
}
else
{
donothingwith(a);
}
}
}
public partial class frmOptions : Form
{
frmA callingform = null;
public frmOptions(frmA x)
{
callingform = x;
}
private void dosomething()
{
callingform.a = value;
}
private void btnSaveSettings_click()
{
this.DialogResult = DialogResult.Yes;
}
private void btnCancelSettings_click()
{
this.DialogResult = DialogResult.No;
}
}
good luck
Newbie here. Maybe someone can give me some direction. I am writing an app for both standard and professional. I have 2 projects in my solution. One is for standard the othe is for professional. I am not sure if this is the right way or not but what I want to do is when the app opens it checks to see what platform is running and then runs the correct project. Any help would be greatly appreciated.
It is possible to create a single project that is capable of running on both platforms but there is quite a bit of groundwork you will have to do first.
Firstly, the main differences.
Standard : No touch screen i.e. No Mouse events. All user input is via the keyboard, buttons, D-PAD and ENTER. No Open/Save dialogboxes, you have to present the files to the user yourself. Message dialogs appear full screen.
Professional : None of the above limitations.
The are a few pointers here:
http://msdn.microsoft.com/en-us/library/bb985500.aspx
The following code will detect the platform and set the variable 'SmartPhone' to 1 (true) if the version is 'Standard'
Code:
#define MAX_LOADSTRING 100
int SmartPhone;
TCHAR szReturn[MAX_LOADSTRING];
SystemParametersInfo(SPI_GETPLATFORMTYPE,MAX_LOADSTRING,szReturn,false);
SmartPhone=wcscmp(TEXT("SmartPhone"),szReturn)^1;
Your processing code may have code such as:
Code:
if(SmartPhone)
{
........ Standard Stuff.......
}
else
{
......... Professional Stuff........
}
Note also that code dealing with a WM_LBUTTONDOWN message will never be executed on a smartphone, as WinMo Standard never generates this message.
It may seem a pain, but you only have one executable to deliver for both platforms.
As an example, here's one I prepared earlier.
http://forum.xda-developers.com/showthread.php?t=509413
more info
I am coding with VB. What I was thinking was creating a class project and making that the startup project. Within the class the VB would check the platform and then run the correct project.
Should work:
To get the Platform type in .NET CF have a look at:
http://msdn.microsoft.com/en-us/library/ms229660(VS.90).aspx
It's also listed in the VS Help.
I am using VS2008 TS and cf3.5. I have tried several methods and still can't get any to work. I must be missing a reference or something. Here is some code I can't get to work.
If SystemSettings.Platform = WinCEPlatform.PocketPC Then
txtDeviceType.Text = "Windows Mobile Professional"
ElseIf SystemSettings.Platform = WinCEPlatform.Smartphone Then
txtDeviceType.Text = "Windows Mobile Standard"
Else
txtDeviceType.Text = "Not Windows Mobile"
End If
Also tried this.
Public Enumeration WinCEPlatform
Dim instance As WinCEPlatform
I also tried getversionex but couldn't get it to work either.
I only code .NET in C# but there is virtually no difference.
Try this: You will have to add the reference to Microsoft.WindowsCE.Forms;
Right click on References in the Solution Explorer, click on Add Reference, in the .NET Tab, pick it out of the list.
Code:
using System;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.WindowsCE.Forms;
namespace Test
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
WinCEPlatform Platform = new WinCEPlatform();
Platform = SystemSettings.Platform;
label1.Text = Platform.ToString();
}
}
}
Works a treat!
Let's let Red Gate's Reflector translate the IL into VB.
It also reveals that the compiler rips outs the middle variables and goes straight for :
Code:
Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs)
Me.label1.Text = SystemSettings.Platform.ToString
End Sub
I am getting an error on this InitializeComponent. Another question. Can I add a class project and use this code to point to the correct project?
Drop the InitialiseComponent function, that is only used used in C#
In VB in Form1 the only code you need is
Code:
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Label1.Text = Microsoft.WindowsCE.Forms.SystemSettings.Platform.ToString
End Sub
End Class
This code works and puts "YES" in the box if run on a PPC
Code:
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If Microsoft.WindowsCE.Forms.SystemSettings.Platform = Microsoft.WindowsCE.Forms.WinCEPlatform.PocketPC Then
Label1.Text = "YES"
End If
End Sub
End Class
Ok. I got it to work with the following code. But I have another problem. My app is a very simple app. I want it to work on PPC2003 and smartphones. I have 2 different forms for standard and professional. Now the problem is that if I use .net compact framework 3.5 then the device has to have that installed. So if I want to the app to work on older devices it won't work without the .net compact framework. If I use .net compact framework 2.0 then I lose the ability to use the code to determine if its standard or professional. I was hoping there was a way to include the 3.5 CF into my app cab but I haven't seen it. I am currently using VS2008 whcih only allows you 2.0 CF and 3.5 CF. I was thinking about using VS2005 and use 1.0 CF so it would work on all Windows mobile devices. But then I would again lose the ability to use the code. Any ideas would be appreciated.
Shared Sub Main()
Dim Platform As New WinCEPlatform()
Platform = SystemSettings.Platform
If Platform = "1" Then
Application.Run(
New Pro())
ElseIf Platform = "2" Then
Application.Run(
New Standard())
End If
End Sub
Using VS2005 I started a new project and selected SmartDevice 1.0. Now I have some issues.
1. Trying to determine either standard or professional. I am trying to use the Pinvoke to do this. No luck so far. I get an error on ByVal nFolder As ceFolders.
2. The code I was using to play a .wav file no longer works.
Dim myplayer As New System.Media.SoundPlayer(New IO.MemoryStream(My.Resources.Dice))
myplayer.Play()
3. I had resource files for images and a wav file so my code to use these no longer work.
Me.PictureBox1.Image = My.Resources.red_die_1_th
1. I'll have a look at it. Watch this space.
2. The SoundPlayer object is only available from .net CF 3.5 onwards. To play sounds you my have to PInvoke PlaySound()
http://msdn.microsoft.com/en-us/library/ms229685(v=VS.80).aspx
3. Should work, but maybe there's a difference in the frameworks. Microsoft's catch-all is that not all methods, properties etc. are supported in all .NET or .NET CF. versions. You may end up doing it in two stages, create a bitmap image from the resource, then pass that to the picturebox.
The answer to 1 is below. This works in C# under VS2003 .NET CF 1.0 but it is only in C#, I do not have VB installed on this machine. You will have to reverse engineer it into VB yourself, not too difficult. The important code is the DLLImport definition, the SPI_GETPLATFORMTYPE definition, and the call of the function in Form1_Load().
On program start "PocketPC" appears in the label on screen.
Code:
using System;
using System.Drawing;
using System.Collections;
using System.Windows.Forms;
using System.Data;
using System.Runtime.InteropServices;
namespace PInvTest
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Label label1;
private System.Windows.Forms.MainMenu mainMenu1;
[DllImport("coredll.dll", EntryPoint="SystemParametersInfo", SetLastError=true)]
private static extern int SystemParametersInfo(
int uiAction, int uiParam, string pvParam, int fWinIni);
private const int SPI_GETPLATFORMTYPE = 257;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
base.Dispose( disposing );
}
/// <summary>
/// The main entry point for the application.
/// </summary>
static void Main()
{
Application.Run(new Form1());
}
private void Form1_Load(object sender, System.EventArgs e)
{
string Platform = new string(' ',20);
SystemParametersInfo(SPI_GETPLATFORMTYPE,Platform.Length,Platform,0);
label1.Text=Platform;
}
}
}
I have to make the program to where it outputs "You were born on (DD-MM-YYYY, these are the user inputs).
I have everything besides that..can anyone help?
Code:
import java.util.Scanner;
//This program does math
public class Final
{
public static void main(String []args)
{
Scanner in=new Scanner(System.in);
System.out.println("One last test");
System.out.print("Enter your birthday (mm/dd/yyyy): ");
String roar=in.nextLine();
int n1=Integer.parseInt(roar);
String date;
String month, day, year;
String ox=in.nextLine();
String[] s = ox.split("/");
for( String str : s);
System.out.println("You were born on"+day+month+year);
}
}
That is what i have so far, but i need to declare the day, month and year..can anyone help me?
Bump..need help please.
backdown said:
I have to make the program to where it outputs "You were born on (DD-MM-YYYY, these are the user inputs).
I have everything besides that..can anyone help?
Code:
import java.util.Scanner;
//This program does math
public class Final
{
public static void main(String []args)
{
Scanner in=new Scanner(System.in);
System.out.println("One last test");
System.out.print("Enter your birthday (mm/dd/yyyy): ");
String roar=in.nextLine();
int n1=Integer.parseInt(roar);
String date;
String month, day, year;
String ox=in.nextLine();
String[] s = ox.split("/");
for( String str : s);
System.out.println("You were born on"+day+month+year);
}
}
That is what i have so far, but i need to declare the day, month and year..can anyone help me?
Click to expand...
Click to collapse
On running your program it shows that you're Strings date, month, day, and year are not initialized. I'm not 100% as I never got far into java, but you should initialize them
Code:
String string = null;
String string = 0;)
once they are initialized it gives another error, basically that you're birthday input of mm/dd/yyyy isn't in the proper format to be an integer. I do not know how to fix that one. My knowledge of java is very basic but I have a feeling that should help you out somewhat.
An easier alternative to what you are trying to accomplish would be to ask the month day and year in separate prompts and assign them to plain integers.
I have a feeling you are doing this for a college class perhaps? I had to do one similar to this thats why I ask.
On another note, you might have better luck finding the help you need on a site that is more geared towards java programming (maybe stack overflow?)
I hope this helps.
Yes, it is my college class.
so far i got this :
Code:
import java.util.Scanner;
//This program does math
public class Final
{
public static void main(String []args)
{
Scanner in=new Scanner(System.in);
System.out.println("One last test");
System.out.print("Enter your birthday (mm/dd/yyyy): ");
String roar=in.nextLine();
int n1= roar;
String date;
String month, day, year;
String ox=in.nextLine();
String[] s = ox.split("/");
System.out.println("You were born on"+s[0]+s[1]+s[2]);
String str;
}
}
Hi all!
Since days I have a problem now. I have an app that manage Entries in a list A. If one of these entries End-Date is today I whant that entry to be shown in a second list B. This is checked when I return from the "addNewItem" Window so I use onNavigatedTo.
Code:
// Static Variables
public static ObservableCollection<Item> lstToday = new ObservableCollection<Item>();
public static ObservableCollection<Item> lstWeek = new ObservableCollection<Item>();
public static ObservableCollection<Item> lstAll = new ObservableCollection<Item>();
// Constructor
public MainPage()
{
InitializeComponent();
MessageBox.Show("Initialize Component");
lbToday.ItemsSource = lstToday;
lbWeek.ItemsSource = lstWeek;
lbAll.ItemsSource = lstAll;
}
protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
{
DateTime currentDate = DateTime.Now;
foreach (Item item in lstAll)
{
if (item.endDate.ToString("yyyy'-'MM'-'dd").Equals(currentDate.ToString("yyyy'-'MM'-'dd")))
{
lstToday.Add(item);
MessageBox.Show("Item '" + item.name + "' added to Todaylist");
}
}
}
private void appBarNew_Click(object sender, EventArgs e)
{
NavigationService.Navigate(new Uri(string.Format("/EditAddItem.xaml"), UriKind.Relative));
}
After that I get an "System.Diagnostics.Debugger.Break();" error that doesn't occur when I delete "lbToday.ItemsSource = lstToday;" to avoid the ListBox Binding.
With lbAll ist runs without any problems!
Can I bind the Listbox direct to the ObservableCollection in XAML=
I really don't know, whats to do. So do you?
It would make my day!
Thanks!
What is the exception message and stack trace when the exception is thrown? (you can browse the properties of the exception using visual studio).
Your code actually works for me (although I had to make some assumptions about what is in lstAll as you don't mention that, and you may have an error in the DataTemplate for the listbox for binding your Item class)
Things to try:
Have you tried it with non static observable collections?
Use binding assignments in the xaml rather than setting the itemssource directly (e.g. using a viewmodel). Then you can let the phone engine worry about when to do the assigments. If you do that don't forget to set the page's datacontext property.
Try it with simple collections of strings first (rather than binding an 'item' class) so you can check it's working without a datatemplate.
Hope you fix it.
Ian
As the topic mentions.
Given
Code:
class ExampleClass {
private static final Map<String, String> test;
static {
test = new HashMap<String,String>();
test.put("cow", "moo");
}
There's additional injection points to accomplish what I'm trying to do (outside the scope of this thread), however it'd be mightly simpler if I'm able able to replace the static {} with my own.
If it is possible, can someone provide the line to do it?
If not I'll implement what I'm trying to do by manipulating the code later on in execution. The end goal is to manipulate the final Map, or manipulate the code that accesses the Map.
Thanks!