In my project I would like to show message or call methods after 5 minutes for example, If the users didn't click on specific button, I wrote this code
Boolean flage = false;
private void button1_Click(object sender, EventArgs e)
{
Timer Clock;
Clock = new System.Windows.Forms.Timer();
Clock.Interval = 1000;
Clock.Start();
Clock.Tick += new EventHandler(Timer_Tick);
}
public void Timer_Tick(object sender, EventArgs eArgs)
{
if (flage == false)
{
MessageBox.Show("after period of time ");
}
}
private void button2_Click(object sender, EventArgs e)
{
flage = true;
}
Its keeping show the messageBox can any body help me.
Your Timer Clock variable is on the stack and ceases to exist when the function exits.
Try making it a member of the class.
Related
I use this code to refresh my from it work good for one time after that the timer stopped with me
private void Button1_Click(object sender, EventArgs e)
{
System.Windows.Forms.Timer timer1 = new System.Windows.Forms.Timer();
timer1.Interval = 900000;//5 minutes
timer1.Tick += new System.EventHandler(Timer1_Tick);
timer1.Start();
}
private void Timer1_Tick(object sender, EventArgs e)
{
//do whatever you want
RefreshMyForm();
}
private void RefreshMyForm()
{
this.Hide();
Graph1 graph = new Graph1();
graph.Show();
}
i don't know what i miss in this code
it hide the from and didn't open again
start refresh that what i looking form
You need to move the timer deceleration out of the button click and make it "global" to the class. Also, set it up on the Form_Load (make sure you wire up the Form_Load method to your Form_Load event.
Also, your hide logic is a bit faulty. You hide the form, then create a graph (but don't attach it to the Form) then show it. Added some comments below to help you navigate these issues.
private System.Windows.Forms.Timer timer1;
private void Form_Load(object sender, EventArgs e)
{
timer1 = new System.Windows.Forms.Timer();
timer1.Interval = 900000;//5 minutes
timer1.Tick += new System.EventHandler(Timer1_Tick);
}
private void Button1_Click(object sender, EventArgs e)
{
if (!timer1.Enabled)
timer1.Start();
}
private void Timer1_Tick(object sender, EventArgs e)
{
//do whatever you want
RefreshMyForm();
}
private void RefreshMyForm()
{
// Do your data update logic here
this.Refresh();
}
I'm a beginner and trying to understand what timer is and how can I use it. I'll be really grateful to you if you replied to my question.
I have a timer called "Elapsed_Time" and I set the interval to 1000 millisecond.
What I wanted to achieve is to show my message: "Hi just once" just once instead of showing it for every 1 second.
private void Elapsed_Time_Tick(object sender, EventArgs e)
{
Messagebox.show("Hi just once");
}
if you still want the timer's Tick event to fire then try this...
private bool _hasTicked = false;
private void Elapsed_Time_Tick(object sender, EventArgs e)
{
if(!_hasTicked)
{
Messagebox.show("Hi just once");
_hasTicked = true;
}
}
private void Elapsed_Time_Tick(object sender, EventArgs e)
{
Messagebox.show("Hi just once");
Elapsed_Time_Tick.Enabled = false;
}
You can do like this
Here's the pseudo code:
private void ForgetSave()
{
if (the SaveRegularly method hasn't been used within 3 mins)
MessageBox.Show("Would you like to save any changes before closing?")
......... the code continues.
}
else
{
this.close();
}
Does anybody know how to write the first line of the if statement?
Simply remember when the last save time was:
private const TimeSpan saveTimeBeforeWarning = new TimeSpan(0,1,0); //1 minute
private static DateTime _lastSave = DateTime.Now;
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if ((DateTime.Now - _lastSave) > saveTimeBeforeWarning)
{
if(MessageBox.Show("Would you like to save any changes before closing?") == DialogResult.Yes);
{
Save();
}
}
}
private void Save()
{
//save data
_lastSave = DateTime.Now
}
As Ahmed suggested you can use a timer and a flag to know when you have to display the message, I left you a piece of code to get you started
private const int SAVE_TIME_INTERVAL = 3 * 60 * 1000;
private bool iWasSavedInTheLastInterval = true;
private System.Windows.Forms.Timer timer;
public Form1()
{
InitializeComponent();
//Initialize the timer to your desired waiting interval
timer = new System.Windows.Forms.Timer();
timer.Interval = SAVE_TIME_INTERVAL;
timer.Tick += Timer_Tick;
timer.Start();
}
private void Timer_Tick(object sender, EventArgs e)
{
//If the timer counts that amount of time we haven't saved in that period of time
iWasSavedInTheLastInterval = false;
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (iWasSavedInTheLastInterval == false)
{
MessageBox.Show("Would you like to save any changes before closing?");
}
}
private void btnSave_Click(object sender, EventArgs e)
{
//If a manual save comes in then we restart the timer and set the flag to true
iWasSavedInTheLastInterval = true;
timer.Stop();
timer.Start();
}
I created a simple C# app that uses the beep console. I want to add a stop button to stop the beeping, but once the app starts to run it doesnt let me hit a close/button button. Below is the code i have.
private void button1_Click(object sender, EventArgs e)
{
int int1, int2, hours;
int1 = int.Parse(txtbox1.Text);
int2 = int.Parse(txtbox2.Text);
hours = ((60 / int1) * int2);
for (int i = 0; i <= hours; i++)
{
Console.Beep();
Thread.Sleep(int1 * 60000);
}
}
The reason is that you execute button1_Click in the GUI thread. When you call this method the thread will be stuck there for quite some time because you make it sleep.
If you remove Thread.Sleep(int1*60000); you will notice that your application is unresponsive until it is done beeping.
You should try to use a Timer instead. Something like this should work (this is based on the Windows.Forms.Timer):
private Timer timer = new Timer();
And set it up
timer.Tick += OnTick;
timer.Interval = int1 * 60000;
...
private void OnTick(object o, EventArgs e)
{
Console.Beep();
}
In your buttonclick you are now able to start and stop the timer:
timer.Start();
or
timer.Stop();
I would use a timer in this case, the reason why you can't close the form is because you are calling a sleep on the form thread from what I understand. Calling a sleep on the form thread will give the impression the app has crashed.
Here is a quick sample code I built in c#, it will beep the console at the time given. I hope it helps.
private void button1_Click(object sender, EventArgs e)
{
timer1.Tick += new EventHandler(timer_dosomething);
timer1.Interval = 60000;
timer1.Enabled = true;
timer1.Start();
}
private void button2_Click(object sender, EventArgs e)
{
timer1.Stop();
}
void timer_dosomething(object sender, EventArgs e)
{
Console.Beep();
}
C# code
TextTime.Text = DateTime.Now.ToString();
Want to refresh this text box every second
Or show a Digital Clock any Idea
You may use a DispatcherTimer:
var timer = new DispatcherTimer
{
Interval = TimeSpan.FromSeconds(1.0)
};
timer.Tick += (o, e) =>
{
TextTime.Text = DateTime.Now.ToString();
};
timer.Start();
The easy way is to add a timer to your app and do it as shown:
Form Load:
private void Form1_Load(object sender, EventArgs e) {
txtdate.Text = DateTime.Now.ToString(("dddd" + ("," + "MM-dd-yyyy")));
Timer1.Interval = 1000;
Timer1.Enabled = true;
}
Timer Tick:
private void Timer1_Tick(object sender, EventArgs e) {
txtTime.Text = DateTime.Now.ToString("HH:mm:ss");
}