I have a form with a tabControl and inside of each tab is a flowLayoutPanel where I can drag and drop files and a button is created for each dropped file. Afterwards when I click on a button, the file that i dropped should open. I have managed to do this for one file only.. My problem is how can I tell which button was clicked and to open the file/app stored in the path for each button.. How can I differentiate in the button_click event the clicked button and the path of the app to open?
Code for this part so far:
Process myProcess = new Process();
string path_app;
public Form1()
{
InitializeComponent();
this.DragEnter += new DragEventHandler(Form1_DragEnter);
this.DragDrop += new DragEventHandler(Form1_DragDrop);
}
void Form1_DragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(DataFormats.FileDrop, false))
e.Effect = DragDropEffects.All;
}
void Form1_DragDrop(object sender, DragEventArgs e)
{
string[] fileList = e.Data.GetData(DataFormats.FileDrop) as string[];
foreach (string s in fileList)
{
Button button = new Button();
button.Click += new EventHandler(this.button_Click);
flowLayoutPanel1.Controls.Add(button);
path_app = String.Format("{0}", s);
}
}
private void button_Click(object sender, System.EventArgs e)
{
myProcess.StartInfo.FileName =path_app;
myProcess.Start();
}
Also my tabControl has the possibility to add new tabs but how can I get the selected tab and the inside flowLayoutPanel to know where to create the button?
And by the way, is there a problem of how I open the files? I understood that i have to take into consideration the working directory..
Thank you for your help!
You can utilize Tag property of the Button:
void Form1_DragDrop(object sender, DragEventArgs e)
{
foreach (String s e.Data.GetData(DataFormats.FileDrop))
{
Button button = new Button();
button.Click += new EventHandler(this.button_Click);
flowLayoutPanel1.Controls.Add(button);
path_app = String.Format("{0}", s);
// Add to Tag any data you want to pin to the button
button.Tag = path_app;
}
}
private void button_Click(object sender, System.EventArgs e)
{
// Obtain via Tag
String path_app = ((sender as Button).Tag as String);
myProcess.StartInfo.FileName = path_app;
myProcess.Start();
}
You could use button.Tag = "theFancyPath" and in the EventHandler cast the object sender as Button to access the Tag property.
If you need more then you could inherit from Button:
public class ButtonWithPathProperty : Button
{
public FileInfo PathToOpen { get; private set; }
public ButtonWithPathProperty(FileInfo path)
{
PathToOpen = path;
this.Click += new EventHandler(this.button_Click);
}
private void button_Click(object sender, System.EventArgs e)
{
var yourPath = this.PathToOpen;
}
}
This is not tested btw :)
Related
I'm creating Buttons programmatically with a method and am wanting to attach a Click event handler. However, that data currently comes from a string parameter which can't be used with += RoutedEventHandler.
public Button CreateButton(string Display, string Name, string ClickEventHandler)
{
Button Btn = new Button
{
Content = Display,
Name = "Btn_" + Name
};
Btn.Click += new RoutedEventHandler(ClickEventHandler);
return Btn;
}
void Btn_save_Click(object sender, RoutedEventArgs e)
{
throw new NotImplementedException();
}
// later
Button MyButton = CreateButton("Save", "save", "Btn_save_Click");
Error is RoutedEventHandler expects a Method and not a String. Is there a different approach to programmatically binding events that allows this sort of behaviour?
Thanks
From what I understand you wish to pass the method that should be executed when Click event is triggered. You could do something along the lines of:
Button button = CreateButton("Save", "save", (s, e) => SomeOnClickEvent(s, e));
Button button2 = CreateButton("Create", "create", (s, e) => SomeOtherOnClickEvent(s, e));
public Button CreateButton(string display, string name, Action<object, EventArgs> click)
{
Button b = new Button()
{
Content = display,
Name = $"Btn_{name}"
};
b.Click += new EventHandler(click);
return b;
}
void SomeOnClickEvent(object sender, EventArgs e)
{
}
void SomeOtherOnClickEvent(object sender, EventArgs e)
{
}
I am not entirely sure what you are trying to accomplish with this.
Here is an example of how to create an event at run time.
public void CreateButton()
{
Button Btn = new Button();
Btn.Click += new EventHandler(btn_Clicked);
}
private void btn_Clicked(object sender, EventArgs e)
{
// Your Logic here
}
I have a small Menu strip item where I have a plethora of buttons which activate different forms.
The code for one button would be this:
Form B1 = new Form1();
private void Button1_Click(object sender, EventArgs e)
{
if (B1.Visible == false)
{
B1 = new Form1();
}
B1.Visible = true;
B1.Activate();
}
I also have a mouse enter- and leave event:
private void Button1_MouseEnter(object sender, EventArgs e)
{
Button1.Text = "Something prdy intriguing";
}
private void Button1_MouseLeave(object sender, EventArgs e)
{
Button1.Text = "Hi";
}
And a tooltip:
private void Tooltips()
{
ToolTip forB1 = new ToolTip();
forB1.SetToolTip(button1, "21.11.17");
}
Now imagine i need about 8 buttons for 8 different forms, that means i have to repeat all of these again and a gain, wasting time AND taking up a LOT of code space.
Is it possible to compress these in anyway?
This is very out of my world, im unsure where to start optimizing.
One option is move all this to one function:
public void AttachMenuStripButtonHandlers(
Button btn,
Form form,
string enterText,
string leaveText,
string tooltip) {
btn.Click += (sender, args) => {
form.Visible = true;
form.Activate();
};
btn.MouseEnter += (sender, args) => {
btn.Text = enterText;
};
btn.MouseLeave += (sender, args) => {
btn.Text = leaveText;
};
new ToolTip().SetToolTip(btn, tooltip);
}
And for each button call like this:
AttachMenuStripButtonHandlers(Button1, B1, "on enter", "on leave", "tooltip");
For second part of your question, You could do something like this
private void Button_MouseEnter(object sender, EventArgs e)
{
((Button)sender).Text = "Something prdy intriguing";
}
private void Button_MouseLeave(object sender, EventArgs e)
{
((Button)sender).Text = "Hi";
}
You need to attach same event handler to all buttons.
So i am kinda stealing #Evk's code here but essentially this works the way I wanted to.
public void ButtonHandlers(Type NewForm)
{
NewButton.Click += (sender, args) =>
{
Form TheNewMain = (Form)Activator.CreateInstance(NewForm);
if (TheNewMain.ShowDialog() != DialogResult.Cancel)
{
TheNewMain.Activate();
}
};
Essentially what i added was instead of getting the Form i have to get the type, since what I want is that when a form is Visible, it won't open it twice, going by Evks code it opens it yes but upon close it's disposed and it cant create a new instance of it.
In code i just have to ask for typeof(formName) in as NewForm
Thanks Evk!
I've made a TextBox that retains what you type, and when you click the button associated it gives you a messagebox. When people want to click no, I want the button to change location so people cannot click it so they are forced to click yes. Can you help me? Here is the code:
{
MsgBox = new CustomMsgBox();
MsgBox.label1.Text = Text;
MsgBox.button1.Text = btnOK;
MsgBox.button2.Text = btnCancel;
MsgBox.Text = Caption;
result = DialogResult.No;
MsgBox.ShowDialog();
return result;
}
private void button2_Click(object sender, EventArgs e)
{
button2.Location = new Point(25, 25);
}
private void button2_MouseHover(object sender, EventArgs e)
{
button2.Location = new Point(+50, +50);
}
private void button2_MouseLeave(object sender, EventArgs e)
{
button2.Location = new Point(+100, +100);
}
You will need to create your own form and make it act like a messagebox. Instead of creating a MessageBox, you will instantiate your own form and so that you can handle the buttons on it.
I create a custom control inside a tab control which contains a flowLayoutPanel on every tab by dragging files on the selected tab. I have a context menu to rename and delete tab pages, but i want also to be able to delete a button created when I right click on it and select "remove"... I cannot find a way to delete only the selected button..
This is what I have to create the buttons:
public void Form1_DragDrop(object sender, DragEventArgs e)
{
string[] fileList = e.Data.GetData(DataFormats.FileDrop) as string[];
foreach (string s in fileList)
{
var button = new Button();
path_app = String.Format("{0}", s);
string filename = path_app;
file_name = Path.GetFileName(path_app);
Icon icon = System.Drawing.Icon.ExtractAssociatedIcon(filename);
Bitmap bmp = icon.ToBitmap();
CustomControl custom_btn = new CustomControl(button, new Label { Text = file_name });
button.Tag = path_app;
button.BackgroundImage = bmp;
button.BackgroundImageLayout = ImageLayout.Stretch;
FlowLayoutPanel selectedFLP = (FlowLayoutPanel)tabControl1.SelectedTab.Controls[0];
selectedFLP.Controls.Add(custom_btn);
button.Click += new EventHandler(button_Click);
ContextMenu cm2 = new ContextMenu();
cm2.MenuItems.Add("Remove", new EventHandler(rmv_btn_click));
custom_btn.ContextMenu = cm2;
}
}
private void rmv_btn_click(object sender, System.EventArgs e)
{
foreach (Control X in fl_panel.Controls)
{
fl_panel.Controls.Remove(X);
}
}
How do I get the button which I right click on it as sender in the rmv_btn_click event to know which one to delete?
If I understand what you mean, You need to use something like this.
private void rmv_btn_click(object sender, System.EventArgs e)
{
fl_panel.Controls.Remove(sender as Button);
}
private void rmv_btn_click(object sender, System.EventArgs e)
{
Button btn = new Button();
Label lbl = new Label();
CustomControl cst_btn = new CustomControl(btn, lbl);
cst_btn = sender as CustomControl;
DialogResult dialogResult = MessageBox.Show("Are you sure that you want to remove this object?", "Remove object", MessageBoxButtons.YesNo);
if (dialogResult == DialogResult.Yes)
{
cst_btn.Dispose();
}
else if (dialogResult == DialogResult.No)
{
//do nothing
}
}
public EventHandler handlerGetter(CustomControl button)
{
return (object sender, EventArgs e) =>
{
rmv_btn_click(button, e);
};
}
I add buttons dynamically.. e.g. Button newButton=new Button();
Now i want each button to be triggered. So i wrote them the following events:
public void response_Click(object sender, EventArgs e)
{
}
public void edit_Click(object sender, EventArgs e)
{
}
public void quote_Click(object sender, EventArgs e)
{
}
Button quote = new Button();
Button reply = new Button();
Button edit = new Button();
quote.ID = "quote";
reply.ID = "reply";
edit.ID = "edit";
How do i trigger them, as soon as the user clicks on the button..will my functions above be triggered? do i need to do the following:
this.Clicked+=quote;
this.Clicked+=reply;
this.Clicked+=edit;
if i do need to do that..where do i put those lines of code?
i use visual studio 1010. asp.net
You can do like..
quote.Click += new EventHandler(quote_Click);
reply.Click += new EventHandler(response_Click);
edit.Click += new EventHandler(edit_Click);
Yes, you would need to register the event of the button and associate it with particular method.
for example.
myButton.Click += new EventHandler(Button_Click);
void Button_Click(object sender, EventArgs e)
{
}