Develop Reference

Message Box hidden in task bar in win form

I have a win form containing only progress bar and
logic for opening and closing an excel or word document using interopt dll.
This win form runs when I click a button in my web application.
The problem is, the win form after closing document displays a Message Box.
This message box always remains in the taskbar instead of Showing up in the
screen.
PS:
DialogResult Result = MessageBox.Show("Save","Confirm", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question);
When I give the message box in this format, the message box always remains in the taskbar. But the functionalities given as properties for the message box works fine.
DialogResult Result = MessageBox.Show("Save","Confirm", MessageBoxButtons.YesNoCancel,MessageBoxOptions.DefaultDesktopOnly, MessageBoxIcon.Question);
When I give the message box in this format, the message box does not remains in the taskbar
but the variable "Result" always returns "No".
Thanks in Advance

Try the below:
DialogResult Secondpopups = MessageBox.Show(new Form() { TopMost = true },"Message u need to diaplay", "Title of the Message", MessageBoxButtons.OK, MessageBoxIcon.Information);

WPF- MessageBox to be top most

I have a WPF application, i need the MessageBox to always be top most.
in win forms i would do something like that:
System.Windows.Forms.MessageBox.Show(new Form() { TopMost = true }, "sure you wanna save?", "confirm", MessageBoxButtons.YesNo)
but how do i do that in WPF?
i saw a few different answers but non of them work for me e.g:
MessageBox.Show(Application.Current.MainWindow, "Im always on top - of the main window");
My mainWindo is null.
In my application the MessageBox is opening from different pages- not windows
Any idea how i do it in the most simple way?

Use MessageBoxOptions.DefaultDesktopOnly and it keeps the MessageBox on top of the window.
MessageBox.Show("You entered an incorrect value. Try once more.", "Wrong input", MessageBoxButton.OK, MessageBoxImage.Exclamation,MessageBoxResult.OK,MessageBoxOptions.DefaultDesktopOnly);

this.Dispatcher.Invoke((Action)(() =>
{
MessageBox.Show("Im always on top - of the main window");
}));
This will run it in the UI thread.Throw this in the method that shows the msg box.
Cheers,
G

You will have to create your own Window and set its Topmost value to true.
MyWindow dialog = new MyWindow();
dialog.Topmost = true;
dialog.Show();

Messagebox.Show from a background application [duplicate]

I have some code that popups a message box:
MessageBox.Show(this,
"You have not inputted a username or password. Would you like to configure your settings now?",
"Settings Needed",
MessageBoxButtons.YesNo,
MessageBoxIcon.Question);
My problem is when this pops up my app is usually minimized to the tray. As a result the messagebox doesn't come to the front and it also doesnt appear along the start bar. The only way of seeing it is by alt-tabbing.
Here is the code that minimizes my app (the parent) to the tray:
if (FormWindowState.Minimized == WindowState)
{
Hide();
}

There's an additional flag you can specify as an option to the standard Windows MessageBox function that isn't exposed in the WinForms wrapper.
What you're looking for is called MB_TOPMOST, which ensures that the message box is displayed as the top-most window over everything else on your desktop. Simply amend your code as shown below:
MessageBox.Show(this,
"You have not inputted a username or password. Would you like to configure your settings now?",
"Settings Needed",
MessageBoxButtons.YesNo,
MessageBoxIcon.Question,
MessageBoxDefaultButton.Button1, // specify "Yes" as the default
(MessageBoxOptions)0x40000); // specify MB_TOPMOST

you can try like this
MessageBox.Show(new Form() { TopMost = true }, "You have not inputted a username or password. Would you like to configure your settings now?",
"Settings Needed",
MessageBoxButtons.YesNo,
MessageBoxIcon.Question);

I only needed this for testing, so if you don't mind being extra cheesy,
MessageBoxOptions.ServiceNotification will do the trick...
MessageBox.Show(message,
"Error",
MessageBoxButton.YesNo,
MessageBoxImage.Exclamation,
MessageBoxResult.OK,
MessageBoxOptions.ServiceNotification);

MessageBox on top of all windows (no tray icon):
MessageBox.Show(new Form() { TopMost = true }, boxText, "Box Title",
MessageBoxButtons.OK, boxIcon);
MessageBox and your app on top of all windows (no tray icon):
TopMost = true;
MessageBox.Show(boxText, "Box Title", MessageBoxButtons.OK, boxIcon);
TopMost = false;
MessageBox on top of all windows, plus tray icon (app loses focus):
MessageBox.Show(boxText, "Box Title", MessageBoxButtons.OK, boxIcon, 0,
MessageBoxOptions.DefaultDesktopOnly);
// (The "0" can also be "MessageBoxDefaultButton.Button1".)
MessageBoxButtons.OK and boxIcon are optional arguments in the first two.
Setting TopLevel doesn't do anthing; it is already true.
There is no direct way to center a MessageBox on its parent form. (Except maybe centering the parent form.)

The more correct way to do this is to set the owner of the MessageBox

Problem with MessageBox

I'm having a problem with a MessageBox intended to be modal.
Here is the situation,
A user select xx from the form
MessageBox appears
User opens the embebed software keyboard (the built-in one, from the device)
User closes the keyboard
The MessageBox loses focus (how? it's supossed to be modal!) and the main form is shown in the foreground
The app blocks, as the user cannot now close the MessageBox.
Here is the code snippet for the MessageBox.
MessageBox.Show("message", "caption", MessageBoxButtons.OK, MessageBoxIcon.Asterisk,
MessageBoxDefaultButton.Button1);
Any ideas on how to solve this?

This is actually somewhat expected behavior under Windows CE (I'm not saying it's right, just expected).
When you click on the SIP button down in the corner of the desktop, your entire app loses focus and focus is passed to the Task Bar. You can see similar "wierdness" by clicking on your application's Task Bar button - the MessageBox will lose focus, even though by all rights you should just be sending focus to the app that is already running.
You can see that it's not a CF bug by changing your MessageBox call like so:
private void button1_Click(object sender, EventArgs e)
{
//MessageBox.Show("message", "caption", MessageBoxButtons.OK,
// MessageBoxIcon.Asterisk,
// MessageBoxDefaultButton.Button1);
MessageBoxCE(this.Handle, "message", "caption", 0);
}
// renamed to not collide with the Windows.Forms MessageBox class
[DllImport("coredll", EntryPoint="MessageBox")]
private static extern int MessageBoxCE(IntPtr hWnd, string lpText,
string lpCaption, int Type);
And you get the exact same behavior.
The one thing that is not expected is that the parent Form is coming up above the MessageBox. I just tested on an ARM-based CE 5.0 device I have on my desktop and the MessageBox stays on top in both the CF and the P/Invoke versions.
Are you able to repro this behavior with a very basic app (i.e. just one form, one button)? If so then it sounds like a platform issue. One thing to remember about using CE is that since the OEM has a lot of control over how the OS is actually implemented, you can never rule out a platform bug for behaviors.

You need to include a reference to the parent form when calling the MessageBox.Show (the IWin32Window parameter, usually just pass in "this"). I believe this is the overload you want to use - see below:
MessageBox.Show Method (IWin32Window, String, String, MessageBoxButtons, MessageBoxIcon, MessageBoxDefaultButton)
Here is a link to the Microsoft documentation.
Enjoy!

MessageBox.Show("Please insert Correct Username and Password.", "Login Error",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
this.Focus();
Its a simple solution. no need to run any JavaScript or other C# Code.

How do I create a MessageBox in C#?

I have just installed C# for the first time, and at first glance it appears to be very similar to VB6. I decided to start off by trying to make a 'Hello, World!' UI Edition.
I started in the Form Designer and made a button named "Click Me!" proceeded to double-click it and typed in
MessageBox("Hello, World!");
I received the following error:
MessageBox is a 'type' but used as a 'variable'
Fair enough, it seems in C# MessageBox is an Object. I tried the following
MessageBox a = new MessageBox("Hello, World!");
I received the following error:
MessageBox does not contain a constructor that takes '1' arguments
Now I am stumped. Please help.

MessageBox.Show also returns a DialogResult, which if you put some buttons on there, means you can have it returned what the user clicked. Most of the time I write something like
if (MessageBox.Show("Do you want to continue?", "Question", MessageBoxButtons.YesNo) == MessageBoxResult.Yes) {
//some interesting behaviour here
}
which I guess is a bit unwieldy but it gets the job done.
See https://learn.microsoft.com/en-us/dotnet/api/system.windows.forms.dialogresult for additional enum options you can use here.

Code summary:
using System.Windows.Forms;
...
MessageBox.Show( "hello world" );
Also (as per this other stack post): In Visual Studio expand the project in Solution Tree, right click on References, Add Reference, Select System.Windows.Forms on Framework tab. This will get the MessageBox working in conjunction with the using System.Windows.Forms reference from above.

It is a static function on the MessageBox class, the simple way to do this is using
MessageBox.Show("my message");
in the System.Windows.Forms class. You can find more on the msdn page for this here . Among other things you can control the message box text, title, default button, and icons. Since you didn't specify, if you are trying to do this in a webpage you should look at triggering the javascript alert("my message"); or confirm("my question"); functions.

Try below code:
MessageBox.Show("Test Information Message", "Caption", MessageBoxButtons.OK, MessageBoxIcon.Information);

Also you can use a MessageBox with OKCancel options, but it requires many codes.
The if block is for OK, the else block is for Cancel. Here is the code:
if (MessageBox.Show("Are you sure you want to do this?", "Question", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)
{
MessageBox.Show("You pressed OK!");
}
else
{
MessageBox.Show("You pressed Cancel!");
}
You can also use a MessageBox with YesNo options:
if (MessageBox.Show("Are you sure want to doing this?", "Question", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
MessageBox.Show("You are pressed Yes!");
}
else
{
MessageBox.Show("You are pressed No!");
}

In the System.Windows.Forms class, you can find more on the MSDN page for this here. Among other things you can control the message box text, title, default button, and icons. Since you didn't specify, if you are trying to do this in a webpage you should look at triggering the javascript alert("my message"); or confirm("my question"); functions.

This is some of the things you can put into a message box. Enjoy
MessageBox.Show("Enter the text for the message box",
"Enter the name of the message box",
(Enter the button names e.g. MessageBoxButtons.YesNo),
(Enter the icon e.g. MessageBoxIcon.Question),
(Enter the default button e.g. MessageBoxDefaultButton.Button1)
More information can be found here

I got the same error 'System.Windows.Forms.MessageBox' is a 'type' but is used like a 'variable', even if using:
MessageBox.Show("Hello, World!");
I guess my initial attempts with invalid syntax caused some kind of bug and I ended up fixing it by adding a space between "MessageBox.Show" and the brackets ():
MessageBox.Show ("Hello, World!");
Now using the original syntax without the extra space works again:
MessageBox.Show("Hello, World!");