Question

I have 40 buttons in a application that I need custom hovers that will show in a status field. I have made a function for adding a certain message and one to remove, so upon a hover, it calls the function, and same with leaving the button.

I want 40 different messages and one way of doing that is to check which button is being hovered over by the mouse.

if(button1.hovered == true){
  string message = "scenario1";
}
elseif(button2.hovered == true){
  scenario2...etc
}

Is there a way to check if hovered? and check it in a if statement?

ive decided to add more info so it might be easier to get my point.

add message to listview when mouse hoover.

    void messAdd(object sender, EventArgs e)
    {


        string now = DateTime.Now.ToString("M/d/yyyy") + " - " + DateTime.Now.ToString("HH:mm:ss tt");
        string message = "message 1";
        found = false;

        ListViewItem item = new ListViewItem(message);
        foreach (ListViewItem z in listView1.Items)
        {
            if (z.Text == message)
            { found = true; }
        }

        if (found == false)
        {
            item.SubItems.Add(now.ToString());
            listView1.Items.Add(item);
            listView1.EnsureVisible(item.Index);
        }
        else
        {
            DeleteIfNecessary(message);
        }
    }

delete message from listbox when mouse leave:

    void messdel(object sender, EventArgs e)
    {


        string message = "message 1";
        found = false;

        ListViewItem item = new ListViewItem(message);
        foreach (ListViewItem z in listView1.Items)
        {
            if (z.Text == message)
            { found = true; }
        }

        if (found == true)
        {
            DeleteIfNecessary(message);
        }

    }

I can make 4 of these functions for each buttons, but since i need 40 different messages, stupid yes, but there is no way to send a message argument through the function, so i need to use the if test and check witch button is hovered and then output the message to that specified button. and im using visual studio and windows forms, sorry for not mentioned.

Answer 1

There is a Control.MouseHover event. You can implement:

private void button_MouseHover(object sender, System.EventArgs e)
{
    doSomething(sender);
}

and for all of your buttons, set event handler for MouseHover to button_MouseHover in IDE, or do it in code:

this.button1.MouseHover += new System.EventHandler(this.button_MouseHover);

By checking the sender parameter you can know which button is calling the event handler.

Update

According to your update in the question, I think you can just use messAdd as the event handler for MouseEnter event for all of your buttons, and use messdel as the event handler for MouseLeave. Again, you don’t need to create a copy of these two methods for all of your buttons, you just need to assign the same event handler method for all the buttons, and check sender to know who is calling the event handler – then creating different messages.

The sender is your Button object. Just cast it to a Button and access what you want (text, tag, name, etc.) to know which Button is trying to add/remove message on the list view.

Update 2

Button button = sender as Button;
if (button == null) {
    // not a button, do nothing
    return;
}

string message = String.Empty;
if (sender.Equals(button1)) {
    message = "message1";
} else if (sender.Equals(button2)) {
    message = "message2";
} ...