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for example i would like a label increment by 1 point every second.
For example
the label will equal 1, then after one second it will equal 2, then after one second it will equal 3, after one second it will equal 4 etc.
its like for a survival scoring mechanism. See how long you can last without dying.
From toolbar add a timer to your form, set it's interval to 1000 (=1s) and set Enabled to true, write an Tick event handler as below:
var num = int.parse(lbl_increase.Text);
lbl_increase.Text = (num+1).ToString();
you can do it like this
1) drag a timer to your form.
the timer is under the components tab (see picture)
2) click your timer (it is not visible on your form, but it is under your form) and go to the properties tab
3) change 'enabled' to true and change 'interval' to 1000.
4) go to event tab and create an event for 'Tick'
5) add this code in your method :
private void timer1_Tick(object sender, EventArgs e)
{
//Convert the text from your label to an int
int i = Convert.ToInt32(yourLabel.Text);
//increment the int
i++;
//set the text to the value of the int
yourLabel.Text = i.ToString();
}
i hope it helps
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I have a small problem, I'm trying to create a math quiz in WPF Apllication, where numbers will randomly pop up, which will be calculated according to the chosen math operation.
Everything works as planned, but now I've gotten to prepare Radiobutton and I have no idea how to come up with it. I would like to do this so that the Radiobuttons would take turns which answer would be correct (so that it was still not the first correctly). I know the answer will have to be written as Radiobutton's content. But I don't know how to set the condition for checking the correctness of the result.
if (firstPoss.Content == result.Text)
{
}
if (secondPoss.Content == result.Text)
{
}
if (thirdPoss.Content == result.Text)
{
}
this IF statement always passes
I will be happy for any advice or nudges in the right direction.
I'm speculating a bit since I do not find your use-case to be clear (perhaps add a picture or visual description?). but i think this should be what you want;
There are a lot of good resources out there, so why don't you start with investigating how the radiobutton works in general?
e.g.
https://wpf-tutorial.com/basic-controls/the-radiobutton-control/
Now we see that the IsChecked property signifies that a certain control is checked - be it by the user or programmatically.
Thus we can check that property:
if(firstPoss.Content == Result.Text && firstPoss.IsChecked)
{
// The result is the same as the 'firstPoss' radiobutton, and the button is checked.
// Debug.WriteLine("User checked the right answer!");
}
// ... etc.
EDIT:
Would something like this work in checking whether the right answer radiobutton is checked?
var answerRadioButtons = new RadioButton[] { firstPoss, secondPoss, thirdPoss };
var correctAnswerButtonFound = false;
foreach(var answerButton in answerRadioButtons)
{
if(answerButton.IsChecked)
{
// The user checked this particular button
if(answerButton.Text == Result.Text)
{
// The user checked this button, and the result text is the same as the radio button text - this means we have the right button
correctAnswerButtonFound = true;
}
}
}
if(correctAnswerButtonFound)
{
// The user pressed the correct answer button
}
else
{
// The user did not press the correct answer button
}
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I am quite new to this and I am building an easy app in visual studio in C# which is plotting graphs and user can customize them by using checkboxes and radiobuttons. These are linked to events and when checkstate is changed, the event is called and the code do its job. But these events are called even when the checkstate was not changed and all plotted areas reload multiple times which is not very pleasant to the user. Can you please advise me how to call the event only when it is required. It's WinForms. An example is below. I want to display the output in both cases - if the bool value is true or false, the output is dependent on this and the outcome is different.
`
private void CheckBoxCountInvalid_CheckStateChanged(object sender, EventArgs e)
{
if (checkBoxCountInvalid.Checked)
countInvalid = true;
else
countInvalid = false;
ShowOutput();
}
`
An (if else) sounds like if would work fine for that problem.
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I'm creating a little game with windows form app. in this game the user have 5 tries.
so I want to show remaining tries in a picture box.
for example:
at the beginning the picture box image is show num5 icon.
when the user click the button the picture box show num4 icon and so on.
what can I do?
You can call this method each click :
// it's global var refers to image
int count = 1;
// use count to load the next image
void loadNextPic()
{
string picPath = "../Pics/imageNum" + count.ToString() + ".jpg";
pictureBox.Image = Image.FromFile(picPath);
count++;
}
Remember you need to name the images as "imageNum1.jpg", "imageNum2.jpg" and so on.
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Using combobox at C#, VS 2010, Forms.
After you drop a combobox, you scroll on list of choices with your mouse. Which event triggers this on MSDN Combobox Events
example: list of choices on combobox are apple, banana, chocolate, etc., you point at apple it calls the event, you point on banana it calls the same event, etc.
Also how do I get the values its pointing at?
If there is no event available, can I make one via program?
Been googling for a long time now can't seem to find what I need.
Which event triggers on this...
If you create a combo box and add items, you can set the SelectedIndexChanged event and set it to your own custom event handler, like this:
comboBox1.Items.Add("Apple");
comboBox1.Items.Add("Banana");
comboBox1.Items.Add("chocolate");
comboBox1.SelectedIndexChanged += ComboBox1OnSelectedIndexChanged;
The method receives a sender object that is of type combobox, the only tricky thing is that the signature sets it to an object. Casting it allows us to pull out the value.
private void ComboBox1OnSelectedIndexChanged(object sender, EventArgs eventArgs)
{
myvalue = ((ComboBox)sender).SelectedValue;
}
Seems like you could get what you want from this
Redrawing of owner-drawn winforms combobox items
specifically when
(state & DrawItemState.HotLight) > 0
Let me know if more explanation is in order.
EDIT --
What I mean is, by implementing ownerdraw, you are made aware of what item the mouse is over. When the mouse is over the item, then, per the linked article
((state & DrawItemState.Selected) > 0) || ((state & DrawItemState.HotLight) > 0)
is true.
So in that case you can fire an event as needed with the info the OP wants.
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I'm building a Windows Forms form in C# with various elements in a panel that starts out either invisible, disabled, or set to null (labels, combo boxes, grids, etc.). As the user goes through and makes choices, these elements are populated, selected, etc.
The idea is to upload files, read them, and process entries to a database. Once the processing for this directory has completed, I'd like to be able to have the user select another directory without exiting and restarting the Windows Forms application, by pressing a button that becomes visible when the process has completed.
Is there an easy call to reset the application (or the panel that contains the elements), similar to when a webform is refreshed, or do I have to write a function that "resets" all of those elements one at a time?
As the result of a development meeting, my project has changed direction. I thank the two of you who helped with answers, and am going to close the question.
Simply remove the panel from the form and create the new one.
Sample:
Panel CreatePanelWithDynamicControls() {
Panel ret = new Panel();
ret.Dock = DockStyle.Fill;
// Some logic, which initializes content of panel
return ret;
}
void InitializeDynamicControls() {
this.Controls.Clear();
Panel pnl = this.CreatePanelWithDynamiControls();
this.Controls.Add(pnl);
}
void Form1_Load(object sender, EventArgs e) {
if (!this.DesignMode) {
this.InitializeDynamicControls();
}
}
// I don't know exactly, on which situation
// do you want reset controls
void SomeEvent(object sender, EventArgs e) {
this.InitializeDynamicControls();
}
You could try calling this.InitializeComponent(), which may do the trick. Alternately, if your application has a 'Directory Select' form and a 'Process Files' form, you could have the Directory Select form do a "new" on the Process Files form, which should return it to its original state (not while its open, though).