I have a class which I inherit from Button. In this class, I create labels which I can use as custom button captions. The problem I have on these custom buttons is when I click the label nothing happens, and if I click outside the label but still on the button it works as usual. To solve this I wrote:
lblTitle.Click += new EventHandler(LabelClick);
And in LabelClick I wrote:
private void LabelClick(object sender, EventArgs e)
{
base.OnClick(e);
}
This worked good, but then I noticed that I didnt get the clickanimation of the click, when I clicked on the label. So I made the same thing with onMouseDown and Up.
lblTitle.MouseDown += new MouseEventHandler(LabelMouseDown);
lblTitle.MouseUp += new MouseEventHandler(LabelMouseUp);
private void LabelMouseDown(object sender, MouseEventArgs e)
{
base.OnMouseDown(e);
}
private void LabelMouseUp(object sender, MouseEventArgs e)
{
base.OnMouseUp(e);
}
But then I sometimes get the effect of clicking two times on the button. So now I'm wondering, how do I give the user the same click animation when clicked on the button and the label ontop of the button - without making the button click twice?
Thanks in advance and if you gonna downgrade this question, please leave a comment on why!
I think that the problem is that LabelClick & LabelMouseDown & LabelMouseUp all these three events are fired when you click the label which fires them in the base button. so your click event is duplicated when you make a MouseDown event. (this should be a comment, but i dont have enough reputation to leave a comment, hope it will help :) )
Related
I am using following code in C# to add a Button
Button TextLabel = new Button(); //local variable
TextLabel.Location = new Point(0, 0);
TextLabel.Visible = true;
TextLabel.Enabled = true;
TextLabel.AutoSize = true;
TextLabel.Click += click;
this.Controls.Add(TextLabel);
And its click handler is
protected void click(object o, EventArgs e)
{
MessageBox.Show("hello");
}
Though the Button is visible and responding to mouse hover, but nothing is happening on its click. What could be wrong or missing?
If I write this same code in an independent project, it works!!!!! Strange. but why????
Form Properties: (if required)
1. Show in taskbar: false
2. Borderless
3. 50% Opaque
Today I realised that just registering click event for a control will not make any event to work unless its parent (in my case its form) on which that control is still active.
Parent control will receive event notification earlier than its child controls. This is a simple and obvious observation, but if not paid attention will make undesirable effects.
That's the mistake I did, I made another form active on my form activated event, hence any control in it didn't received events like mouse clicks.
Talking of 'hover effects are working', then yes, even if a form is inactive, hover works.
So I just removed the line of code that made another form active and everything is working fine now.
private void Form1_Activated(object sender, EventArgs e)
{
//if (form2!=null) form2.BringToFront(); //commented this
}
I program in Visual Studio 2013 C#.
I want to have a functionality to disable for short time a button.
I tried button.Enabled=false, but I see that when I click it during it is disabled then the click action starts right after I get that button enabled in other place of the program.
How to clear that event or block them when button is disabled?
Best regards,
Krzysztof
for disable button click.
button1.Click -= button1_Click; // here button1_Click is your event name
for enable button click.
button1.Click += button1_Click; // here button1_Click is your event name
This is the extremely simple way that I found on the internet and it works.
Disable the button(s)
Run whatever is needed to be performed on the procedure
Run this command Application.DoEvent();. This command enqueues all the click events (as many as the user clicked) and ignore/dispose them
Enable the button(s) at the end
Good Luck
Can't you just check for button's state before executing commands in the method?
For example:
void Click(object sender, EventArgs e)
{
if(!(sender as Button).Enabled)
return;
//other statements
}
Try
YourButton.Attributes.Add("onClick", "");
To remove its onClick altogether.
and then
YourButton.Attributes.Add("onClick", "YourButton_Click");
To add it again.
But your program shouldn't execute the Click when you say it does. It's likely there's something wrong in your code's logic.
Look at this code below, after click button2, button 1 is disabled. while button 1 is disabled, click button 1. After button 1 enable automatically after 5 seconds textBox1 update to "Update".
private void button1_Click(object sender, EventArgs e)
{
textBox1.Text = "Update";
}
private void button2_Click(object sender, EventArgs e)
{
button1.Enabled = false;
Thread.Sleep(5000);
button1.Enabled = true;
}
private void button3_Click(object sender, EventArgs e)
{
textBox1.Text = "";
}
btn.Visibility = Visibility.Collapsed;
You can try this.
ALL WRONG!
"button1_Click" is not the standard handler behind a button, so it cannot be removed. That is your own function.
YourButton.Attributes does not exist at all.
Nobody even mentioned "Web Forms".
Your description does not match the Windows Forms Button behavior.
The solution for the question you really asked is:
Use a usual Windows Forms Button or override the click event to check again if the button is enabled.
I am very new with the C# UserControl. I have problems with the event Leave. This is my situation: I would like to go from usercontrolA to userControlB. Before going to userControlB, usercontrolA_Leave event is called.
private void usercontrolA_Leave(object sender, EventArgs e)
{
MessageBox.Show("you are leaving.....");
}
After MessageBox is shown, the program will not proceed to my userControlB. HOWEVER when there is no MessageBox in the code, the program can proceed to userControlB.
private void usercontrolA_Leave(object sender, EventArgs e){//anything but MessageBox}
In my case, I need MessageBox.
I need MessageBox(or other thing) for me to decide whether staying or leaving.. .
msdn Control.Leave Event
I heard about setting set focusor lost focus. Is that possible to use this?
I hope you guys could understand what I have written. Thank you in advance.. :)
You will not be able to preserve mouse movements once a MessageBox is created. This is a modal box that comes up on top of the existing window and takes the focus away from the current form and interrupts the mouse.
Consider an option that does not interrupt the mouse, such as writing out to a textbox. Create a TextBox will the multi-line and scrollbar options enabled. Then write to it.
private void usercontrolA_Leave(object sender, EventArgs e)
{
textBox1.Append("you are leaving A...\r\n");
}
private void usercontrolB_Enter(object sender, EventArgs e)
{
textBox1.Append("you are entering B...\r\n");
}
I have a class which extends the Button-class. Why I do this, is because I want to use more than one label on the button.
The button works, and I've handled clicks on the label:
private void ClickOnLabel(object sender, EventArgs e)
{
base.OnClick(e);
}
Problem is, if I click and hold on a button the button reaches this "button pressed-state". And if I do the same on the label (which lies ontop of the button), it doesn't. The events that are using the method above is Click and DoubleClick. What am I missing?
Problem was I had to inheritate both MouseDown and MouseUp (along with Click) for get that behaviour.
This is what I'm doing and it results in a stack overflow because it just switches back and forth forever.
private void radioButtonA_CheckedChanged(object sender, EventArgs e)
{
radioButtonB.Checked = !radioButtonB.Checked;
}
private void radioButtonB_CheckedChanged(object sender, EventArgs e)
{
radioButtonA.Checked = !radioButtonA.Checked;
}
There has to be a better way to do this...
try commenting out all of your code and see if it works the way you want.
you don't have to uncheck the other radio buttons in code
Is it toggling of "One" radio button what you were trying to do? If so, I tried this, and it works for me:
Set the Radio Button AutoCheck property to FALSE.
Create a "Click" event for the Radio Button.
In the Click Event Handler for the Radio Button paste the code:
radioButton.Checked = !radioButton.Checked;
I hope this helps.
You can disable the Event in the code before changing the Checked value, then add it again immediately afterwards.