Develop Reference

Which event is raised after the ComboBox_SelectedIndexChanged has completed

I have a comboBox that registers to ComboBox_SelectedIndexChanged event.
When that event is completed I want to do another change.
I tried to registered to Combo_SelectionChangeCommitted event but that event occures before the ComboBox_SelectedIndexChanged
Does anyone know what event occurs after the ComboBox_SelectedIndexChanged is completed?
private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
{
int selectedIndex = ((ComboBox)sender).SelectedIndex;
Update(selectedIndex);
ActiveNextRow(); // I want that method will occurred after the selectedIndexChanged event end.
}
Thanks

This question can be generalized to the order of events: link
As an example you can do the following:
private void Form1_Load(object sender, EventArgs e)
{
comboBox1.SelectedIndexChanged += comboBox1_SelectedIndexChanged;
comboBox1.SelectedIndexChanged += comboBox1_SelectedIndexChanged3;
comboBox1.SelectedIndexChanged += comboBox1_SelectedIndexChanged2;
}
private void comboBox1_SelectedIndexChanged3(object sender, EventArgs e)
{
// Your code here
}
private void comboBox1_SelectedIndexChanged2(object sender, EventArgs e)
{
// Your code here
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
// Your code here
}
The execution order will be exactly as prescribed in the Form1_Load method. Another way to achieve what you want would be to put the call to your method at the end of the comboBox1_SelectedIndexChanged method (in the same thread).
If your Update method runs some process on a separate thread, the comboBox1_SelectedIndexChanged method will be completed before that process run by Update completes.

Transfer a method to another method

I'm new here and I have a doubt. It is possible to transfer a method to another method?
private void button1_Click(object sender, EventArgs e)
{
}
private void c_Click(object sender, EventArgs e)
{
MessageBox.Show("Transfer OK!!!");
}
private void button2_Click(object sender, EventArgs e)
{
// c_Click ????? ------> button1_Click
}
By clicking on Button2, via code is included c_Click the content within the button1.
Finally, clicking on button1, I need to bring up the "Transfer OK" message. Is this possible?

private void button1_Click(object sender, EventArgs e)
{
MessageBox.Show("Default Message");
c.PerformClick();
}
private void c_Click(object sender, EventArgs e)
{
MessageBox.Show("Transfer OK!!!");
}
Button.PerformClick Method used to call button click event in any method

I think you can use something like this inside your button2_Click:
button1.PerformClick();
or
c_Click(sender, e);

private void button1_Click(object sender, EventArgs e)
{
c_Click(sender, e);
}

I honestly don't know if I understand your question but based on your comments:
I do not want to run "PerformClick ()" or anything similar. Basically,
it would delete the content of the button1_Click and include C_Click
content within the button1_Click.
Clicking on button1, I need to bring up the "Transfer OK" message.
Button2 will have code that will perform the deletion of button1
content and will include the contents of C_Click event. I guess it's
something using "Delegates" or similar.
You're probably not using the word "Content" in the Windows Forms sense of the word. What I get from that is that when you click button2, you want button1 to start acting like the c_Click button, correct?
If I get you correctly you need to simply remove button1's EventHandler for button1_Click and replace it with c_Click, like so:
private void button1_Click(object sender, EventArgs e)
{
}
private void c_Click(object sender, EventArgs e)
{
MessageBox.Show("Transfer OK!!!");
}
private void button2_Click(object sender, EventArgs e)
{
// c_Click ????? ------> button1_Click
button1.Click -= new EventHandler(button1_Click);
button1.Click +=new EventHandler(c_Click);
}
So that after you click button2, the next time you click on button1, it will do c_Click() instead of button1_Click()

How do I make a button show the listbox when clicked?

I am making a form where if a button is clicked it will go to my list box and run the functions I have in there though I am a bit confused on how to make it realise when the button has been clicked and for the listbox to work. Here is my code >_>
private void button1_Click(object sender, EventArgs e)
{
}
public void ListBox_SelectedIndexChanged(object sender, EventArgs e)
{
Ping.PlayConsole();
}

You just need:
private void button1_Click(object sender, EventArgs e)
{
Ping.PlayConsole();
}
It's ok to call the same function under different handlers.

Try this :
private void button1_Click(object sender, EventArgs e)
{
ListBox_SelectedIndexChanged(sender,e);
}
Good Luck !!

private void button1_Click(object sender, EventArgs e)
{
ListBox.Focus();
Ping.PlayConsole();
}

Both event handlers share the same signature void (object , EventArgs), so they are call-compatible.
If you are connecting the event visually using the form designer:
Go to the Property Inspector's Events pane and instead of double-clicking it to create an event handler stub for button1.Click, click the dropdown box icon that appears on the right side. Visual Studio will show all the event handlers present in the form that have a compatible signature, you should be able to choose ListBox_SelectIndexChanged for the button1.Click handler. They will be sharing the same handler.
If you are connecting the handler by code then this should work too:
ListBox1.SelectIndexChanged += new System.EventHandler(ListBox_SelectedIndexChanged);
button1.Click += new System.EventHandler(ListBox_SelectedIndexChanged);

c# loop every minute - where to put the code?

Currently I'm moving from java to c# and I'm full of crazy questions.
I'm trying new things on a windows form application and now,I would like to create a loop wich is executing a code every 1 minute,the problem is that I have no idea where to put this code.
For example,the form structure is like:
using System;
namespace Tray_Icon
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
notifyIcon1.ShowBalloonTip(5000);
}
private void notifyIcon1_BalloonTipClicked(object sender, EventArgs e)
{
label1.Text = "Baloon clicked!";
}
private void notifyIcon1_BalloonTipClosed(object sender, EventArgs e)
{
label1.Text = "baloon closed!";
}
private void contextMenuStrip1_Opening(object sender, CancelEventArgs e)
{
}
private void option1ToolStripMenuItem_Click(object sender, EventArgs e)
{
//some code here
}
private void option2ToolStripMenuItem_Click(object sender, EventArgs e)
{
//some code here
}
private void option3ToolStripMenuItem_Click(object sender, EventArgs e)
{
label1.Text = "Option 3 clicked!";
}
private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e)
{
option1ToolStripMenuItem_Click(this, null);
}
private void closeToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Close();
}
private void btnWrite_Click(object sender, EventArgs e)
{
//code here
}
}
}
Where should I put the loop code? :(
Thanks in advance for ANY replay!!!

Add a Timer to your form:
set its Interval property to 60000 (one minute in milliseconds) and Enabled to True:
and attach an event handler to the Timer.Tick event, e.g. by double-clicking the timer in the Forms designer:
private void timer1_Tick(object sender, EventArgs e)
{
// do something here. It will be executed every 60 seconds
}

You would have to add a timer, and set the interval to 1000 miliseconds, and in the OnTick event you add the code with your loop
Timer tmr = null;
private void StartTimer()
{
tmr = new Timer();
tmr.Interval = 1000;
tmr.Tick += new EventHandler<EventArgs>(tmr_Tick);
tmr.Enabled = true;
}
void tmr_Tick(object sender, EventArgs e)
{
// Code with your loop here
}

You can't put any loop code in here.
In your designer look for the Timer control. When you have that, configure it to run every minute and place your code in the Timer_Tick event.
Or create a timer manually in code and respond to the event :) But for starters, doing it by the designer is easier!

Drag a Timer component on the Form and doubleclick it. There you go with the code.
The Timer component runs in the main thread so you can modify UI components without worrying.
Alternatively You could create a System.Timers.Timer, which has it's own thread and has some advantages, but possible caveats when modifying UI components. See http://msdn.microsoft.com/en-us/library/system.timers.timer.aspx

Try to use Background Worker and put the code in the backgroundWorker.DoWork or use a Timer

Use System.Timers.Timer:
System.Timers.Timer aTimer;
{
aTimer = new System.Timers.Timer();
aTimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);
aTimer.Interval = 60000;
aTimer.Enabled = true;
}
private static void OnTimedEvent(object source, ElapsedEventArgs e)
{
Console.WriteLine("The Elapsed event was raised at {0}", e.SignalTime);
}
for using Timer see this tutorial: C# Timer

How you do it in Java platform?
I think Java should be the same with .net.
In fact, a form program is just normal program which contains a event dispatcher. The event dispatcher listen to the UI events and dispatch them to the event handlers. I think all the UI mode should like this, no matter Java or .net platform.
So generally speaking, you have 2 options:
Start the loop at beginning. In this case, you should insert your
code in the constructor of the Form.
Start the loop when user
click the button. In this case, you should insert your code in the
event handler function.
Yes, as others mentioned, you should use the timer. But this should after you know where your code should locate. You also can use a endless loop with a sleep call. But timer is a better solution.

Idea of timer is more better. But If you want to use threads. Then Follow this
Let me assume that You want to do it right from the start of program
You can write in body of function (event in fact) named Form1_Load as
Your actual code is just within while loop other code only to guide
I can guide if you don't know the use of threads in C#
bool button2Clicked = false;
private void Form1_Load(object sender, EventArgs e)
{
// A good Way to call Thread
System.Threading.Thread t1 = new System.Threading.Thread(delegate()
{
while (!button2Clicked)
{
// Do Any Stuff;
System.Threading.Thread.Sleep(60000); //60000 Millieconds=1M
}
});
t1.IsBackground = true; // With above statement Thread Will automatically
// be Aborted on Application Exit
t1.Start();
}

Calling click event of a button serverside

How can I click or load the click() event of a button in codebehind?
I already tried
btn.Click();
but this gives an error. I am using ASP.NET

I will assume that you have a button called Button1
and that you have double clicked it to create an event handler.
To simulate the button click in code, you simply
call the event handler:
Button1_Click(object sender, EventArgs e).
e.g. in your Page Load Event
protected void Page_Load(object sender, EventArgs e)
{
//This simulates the button click from within your code.
Button1_Click(Button1, EventArgs.Empty);
}
protected void Button1_Click(object sender, EventArgs e)
{
//Do some stuff in the button click event handler.
}

If you don't need the context provided by the sender and eventargs then you can just refactor to create a method (eg DoStuff()) and make your event handler just call that. Then when you want to call the same functionality from elsewhere you can just call DoStuff(). It really depends on whether you want to actually simulate a click or not. If you want to simulate a click then other methods are better.

Do you wish to call all the event handlers attached to the button, or just one?
If just one, call the handler:
btn.btn_Click(btn, new EventArgs());
If all of them, trigger the event:
var tmpEvent = btn.Click;
if (tmpEvent != null)
tmpEvent(btn, new EventArgs());

Try this:
YourButton_Click(sender, e);

Edit try this:
protected void Page_Init(object sender, EventArgs e)
{
Button1.Click += new EventHandler(Button1_Click);
}
void Button1_Click(object sender, EventArgs e)
{
}
in the .cs page

Just call the buttons click function.
http://forums.asp.net/t/1178012.aspx
Instead of trying to call the event just call the function that event uses.
Example: btn.Click() calls
btn_Click(object sender, EventArgs e)
so you should call the function btn_Click(btn,new
EventArgs());

It's been a long time ago, but here is my solution
You can use:
btn.PerformClick();

protected void Page_Load(object sender, EventArgs e)
{
functionName();
}
protected void btn_Click(object sender, EventArgs e)
{
functionName();
}
public void functionName()
{
//function code goes here, and call this function where ever you want
}
try this one.......

YourButton.RaiseEvent(new RoutedEventArgs(Button.ClickEvent));
This works for me.