I have the code below.
public void WepaonEquip(Object sender, System.EventArgs e)
{
if (button[0].BackColor == Color.Beige)
{
button[0].BackColor = Color.OrangeRed;
}
else if (button[1].BackColor == Color.Beige)
{
button[1].BackColor = Color.OrangeRed;
}
else if (button[2].BackColor == Color.Beige)
{
button[2].BackColor = Color.OrangeRed;
}
}
The code in the class containing this chunk of code generates a button array. What I want is that the user will click a button and the colour of the button clicked will change.
However, when the user clicks, lets say, the 3rd button, the first button in the array changes colour, not the one clicked. Any idea as to why this isn't working? I believe the logic of the code works, perhaps I'm missing something.
Set each button in the panel to use the same Click Event handler. In the handler cast sender as a button and change the color
Assuming that WeaponEquip is the click event handler for the buttons it would look something like this:
public void WepaonEquip(Object sender, System.EventArgs e)
{
Button clickedbutton = (Button)sender
clickedbutton.BackColor = Color.OrangeRed;
}
Related
Hello im making my first project with about 10 different textboxes where the user puts data in. when he/she clicks the the textbox the textbox text clears and a virtual numpad form pops up and when he leaves the textbox the numpad "hides".
right now (or i would) i have 2 events for every textbox, a click event and a leave event,
private void sheetWidthBox_Enter(object sender, EventArgs e)
{
vnumPadForm.Location = PointToScreen(new Point(sheetWidthBox.Right, sheetWidthBox.Top));
vnumPadForm.Show();
}
Im sure there is a way of dynamically coding that in one event and just grabbing the label name. i have played around with it a bit on my numpad like this and it works good;
private void button_Click(object sender, EventArgs e)
{
Button b = (Button)sender;
string num = b.Text;
SendKeys.SendWait(num);
}
Like that but instead i want to get the label name
right now (or i would) i have 2 events for every textbox, a click event and a leave event,
it works but very inefficient.
Change the name of the handler to something generic like "anyBox_Enter()", and update to the code below:
TextBox curTextBox = null;
private void anyBox_Enter(object sender, EventArgs e)
{
curTextBox = sender as TextBox;
vnumPadForm.Location = PointToScreen(new Point(curTextBox.Right, curTextBox.Top));
vnumPadForm.Show();
}
Note that I added a class level variable called "curTextBox" that gets set from the generic handler! This will track whatever TextBox was entered last.
Now, one by one, select each TextBox on your Form that you want to wire up to this common handler. After selecting each one, in the Properties Pane, click on the "Lightning Bolt" Icon to switch to the events for that control if they are not already showing. Find the "Enter" entry and change the dropdown to the right so that it says "anyBox_Enter".
Then in your button click handlers you can use the "curTextBox" variable to know where to send the key:
private void button_Click(object sender, EventArgs e)
{
Button b = (Button)sender;
string num = b.Text;
if (curTextBox != null) {
curTextBox.Text = num; // or possibly APPEND this to the TB?
}
}
When I click on one radio button, it sets the text in my richtextbox. If I click on another one, it'll do nothing. Is it possible to replace the text with another radio button?
private void M_buttonComment_CheckedChanged(object sender, EventArgs e)
{
if (M_buttonComment.Checked) //If checked == true
{
// Set the text to be "Comment" //
M_TitleTextBox.Text = "Comment - ";
}
}
You need to subscribe to the same CheckChanged event for both the radio buttons.
Set this property for both radio buttons. (Name the method whatever you want, but make sure the name of the method is the same in the code.)
Then in your code:
private void SomeCustomEvent(object sender, EventArgs e)
{
if (radBtnOne.Checked) //If checked == true
{
M_TitleTextBox.Text = "From radio button one";
}
else if(radBtnTwo.Checked)
{
M_TitleTextBox.Text = "From radio button two";
}
}
Notice that the same thing is happening if either radio button is checked in my example. If you don't care which radio button was checked and just want to do the same thing regardless then the following would work. sender in this case would be the radio button clicked.
But you could also figure out which radio button was clicked by looking at their .Name property.
private void SomeCustomEvent(Object sender, EventArgs e) {
RadioButton rb = (RadioButton)sender;
if (rb.Checked) { // From either radio button
M_TitleTextBox.Text = "A radio button was clicked.";
if(rb.Name = "radBtnOne") // To check which one was checked.
{
// Now we know which radio button was clicked. Same process for the second
}
}
}
I need to determine if the value of a NumericUpDown control was changed by a mouseUp event.
I need to call an expensive function when the value of a numericupdown has changed. I can't just use "ValueChanged", I need to use MouseUp and KeyUp events.
Basically, I need to know:
Did the value of the numericUpDown change when the user let go of the
mouse? If any area which is not highlighted in red is clicked, the
answer is no. I need to IGNORE the mouse up event, when ANYWHERE but the red area is clicked.
How can I determine this by code? I find events a little confusing.
This will fire when the user releases the mouse button. You might want to investigate which mousebutton was released.
EDIT
decimal numvalue = 0;
private void numericUpDown1_MouseUp(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left && numvalue != numericUpDown1.Value)
{
//expensive routines
MessageBox.Show(numericUpDown1.Value.ToString());
}
numvalue = numericUpDown1.Value;
}
EDIT 2
This will determine if the left mousebutton is still down, if it is exit before performing expensive routine, doesn't help with keyboard button down.
private void numericUpDown1_ValueChanged(object sender, EventArgs e)
{
if ((Control.MouseButtons & MouseButtons.Left) == MouseButtons.Left)
{
return;
}
//expensive routines
}
Edit 3
How to detect the currently pressed key?
Will help solve the Any key down, Though I think the only ones that matter are the arrow keys
Problem - I need to IGNORE the mouse up event, when ANYWHERE but the red area is clicked.
Derive a custom numeric control as shown below. Get the TextArea of the Numeric Control and ignore the KeyUp.
class UpDownLabel : NumericUpDown
{
private Label mLabel;
private TextBox mBox;
public UpDownLabel()
{
mBox = this.Controls[1] as TextBox;
mBox.Enabled = false;
mLabel = new Label();
mLabel.Location = mBox.Location;
mLabel.Size = mBox.Size;
this.Controls.Add(mLabel);
mLabel.BringToFront();
mLabel.MouseUp += new MouseEventHandler(mLabel_MouseUp);
}
// ignore the KeyUp event in the textarea
void mLabel_MouseUp(object sender, MouseEventArgs e)
{
return;
}
protected override void UpdateEditText()
{
base.UpdateEditText();
if (mLabel != null) mLabel.Text = mBox.Text;
}
}
In the MainForm, update your designer with this control i.e. UpDownLabel:-
private void numericUpDown1_MouseUp(object sender, MouseEventArgs e)
{
MessageBox.Show("From Up/Down");
}
Referred from - https://stackoverflow.com/a/4059473/763026 & handled the MouseUp event.
Now, use this control instead of the standard one and hook on the
KeyUp event. You will always get the KeyUp event from the Up/Down button only i.e. RED AREA when you click the
spinner [Up/Down button, which is again a different control derived
from UpDownBase].
I think you should use Leave event that when the focus of NumericUpDown control gone, it would called.
int x = 0;
private void numericUpDown1_Leave(object sender, EventArgs e)
{
x++;
label1.Text = x.ToString();
}
I am creating 7 buttons on the fly
when i create the buttons i am trying to have an event handler than can deal with all clicks in one method via a switch. Ideally i want to pass an id with the button that indicates what was clicked, opposed to this solution of
void pdfButton_Click(object sender, EventArgs e)
{
Button b = (Button)sender;
Console.WriteLine(b.Text);
}
as all of the buttons using this event handler have the same text. I have a unique id associated witht the buttons but no idea how to send them
thanks
You can use the Name or Tag properties.
Put the ID in the Tag property on the button when you create them and then check the ID in your event handler.
Button button = new Button();
button.Tag = 1;
...
void pdfButton_Click(object sender, EventArgs e)
{
Button b = (Button)sender;
switch ((int)b.Tag)
{
...
}
}
First: Bad practice to handle several clicks in one event via switch. But however a solution would be:
Create your own control which inherits the button and ad your ID as an property. So you can access it via:
MyButton b = (MyButton)sender;
switch(b.ID) {
//Code goes here
}
If each button you add has a unique Id, why not just use the ID property of the button?
Button button = new Button();
button.ID= "Button1";
//...
void pdfButton_Click(object sender, EventArgs e)
{
Button b = (Button)sender;
switch(button.ID)
{
case "Button1":
//...
}
}
I have a button that I trigger OnClick whenever there is a click on that button. I would like to know which Mouse button clicked on that button?
When I use the Mouse.LeftButton or Mouse.RightButton, both tell me "realsed" which is their states after the click.
I just want to know which one clicked on my button. If I change EventArgs to MouseEventArgs, I receive errors.
XAML: <Button Name="myButton" Click="OnClick">
private void OnClick(object sender, EventArgs e)
{
//do certain thing.
}
You can cast like below:
MouseEventArgs myArgs = (MouseEventArgs) e;
And then get the information with:
if (myArgs.Button == System.Windows.Forms.MouseButtons.Left)
{
// do sth
}
The solution works in VS2013 and you do not have to use MouseClick event anymore ;)
If you're just using the Button's Click event, then the only mouse button that will fire it is the primary mouse button.
If you still need to know specifically whether it was the left or right button, then you can use the SystemInformation to obtain it.
void OnClick(object sender, RoutedEventArgs e)
{
if (SystemParameters.SwapButtons) // Or use SystemInformation.MouseButtonsSwapped
{
// It's the right button.
}
else
{
// It's the standard left button.
}
}
Edit: The WPF equivalent to SystemInformation is SystemParameters, which can be used instead. Though you can include System.Windows.Forms as a reference to obtain the SystemInformation without adversely effecting the application in any way.
You're right, Jose, it's with MouseClick event. But you must add a little delegate:
this.button1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.MyMouseDouwn);
And use this method in your form:
private void MyMouseDouwn(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
this.Text = "Right";
if (e.Button == MouseButtons.Left)
this.Text = "Left";
}