How To Open The MessageBox Window In The Middle Of The Application Window?

Question

Hi all,

I wrote a C # windows application application. I want to open the MessageBox alert in the middle of the application? How can I do it?

Thanks.

Answer 1

I have a code sample here which uses the following NuGet package, WindowsAPICodePack-Core which is free. No perfect but close.

Example

using System;  
using System.Windows.Forms;  
using DialogsSharp.Classes;  
  
namespace DialogsSharp  
{  
    public partial class Form1 : Form  
    {  
        public Form1()  
        {  
            InitializeComponent();  
        }  
  
        private void CenterOnFormButton_Click(object sender, EventArgs e)  
        {  
            DialogHelpers.CenterOnParent();  
        }  
    }  
}  
  

Code

using System;  
using System.IO;  
using System.Windows.Forms;  
using Microsoft.WindowsAPICodePack.Dialogs;  
  
namespace DialogsSharp.Classes  
{  
  
    public static class DialogHelpers  
    {  
        public static void CenterOnParent()  
        {  
            var yesButton = new TaskDialogButton("CloseTaskDialogButton", "Yes")  
            {  
                Default = true  
            };  
            var noButton = new TaskDialogButton("ProceedTaskDialogButton", "No");  
  
            var dialog = new TaskDialog  
            {  
                Caption = "Question",  
                InstructionText = $"Would you like to continue?",  
                Icon = TaskDialogStandardIcon.Information,  
                Cancelable = false,  
                StartupLocation = TaskDialogStartupLocation.CenterOwner  
            };  
  
            dialog.Controls.Add(yesButton);  
            dialog.Controls.Add(noButton);  
  
            dialog.OwnerWindowHandle = Form.ActiveForm.Handle;  
  
            dialog.Opened += (senderObject, ea) =>  
            {  
                var taskDialog = senderObject as TaskDialog;  
                taskDialog.Icon = taskDialog.Icon;  
            };  
  
            yesButton.Click += (e, a) =>  
            {  
                Console.WriteLine("Yes");  
                dialog.Close(TaskDialogResult.Close);  
            };  
  
            noButton.Click += (e, a) =>  
            {  
                Console.WriteLine("No");  
                dialog.Close(TaskDialogResult.Close);  
            };  
  
            dialog.Show();  
  
        }  
  
    }  
}  
  

Edit

Added another option in the same repository, see this library. I still favor the other library as it has more options overall.

Answer 2

A way is with a CBT Hook, like at : How to Make MessageBoxes Center on their Parent Forms

Answer 3

You can also customize a Form and use it as message box.

        public MyMessageBox(string message, string title)  
        {  
            InitializeComponent();  
            this.StartPosition = FormStartPosition.CenterScreen;// Or wherever   
  
            label1.Text = "\r\n" + message;  
            this.Text = title;  
            this.Location = ...  
        }  
  
        private void button1_Click(object sender, EventArgs e)  
        {  
            this.Close();  
        }  

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