To create a metro or modern ui style windows application in c#, you can use the metroframework library.
First off, you need to install the metro framework to your projecy by right-clicking on your project, then select Manage NuGet Packages -> Search metro framework -> Install
Dragging the MetroTile from the visual studio toolbox to your winform, then you can design a simple dashboard as shown below.

If you haven't got the metro framework toolbox, you can view the post how to download and install metro framework to visual studio toolbox
To create a metro form, you should change inheritance from Form to the MetroForm, then you can handle your form as the following c# code.
using System;
using System.Windows.Forms;
namespace MetroMessageBoxDemo
{
public partial class Form1 : MetroFramework.Forms.MetroForm
{
public Form1()
{
InitializeComponent();
}
//OK message box
private void metroTile1_Click(object sender, EventArgs e)
{
MetroFramework.MetroMessageBox.Show(this, "OK", "Message", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
//Yes/No message box
private void metroTile3_Click(object sender, EventArgs e)
{
if (MetroFramework.MetroMessageBox.Show(this, "Yes/No", "Message", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
//Do something
}
}
//YesNo/Cancel message box
private void metroTile2_Click(object sender, EventArgs e)
{
if (MetroFramework.MetroMessageBox.Show(this, "YesNo/Cancel", "Message", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question) == DialogResult.Yes)
{
//Do something
}
}
//Error message box
private void metroTile4_Click(object sender, EventArgs e)
{
MetroFramework.MetroMessageBox.Show(this, "Error", "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
//Warning message box
private void metroTile5_Click(object sender, EventArgs e)
{
MetroFramework.MetroMessageBox.Show(this, "Warning", "Message", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
//Hand message box
private void metroTile6_Click(object sender, EventArgs e)
{
MetroFramework.MetroMessageBox.Show(this, "Hand", "Message", MessageBoxButtons.OK, MessageBoxIcon.Hand);
}
//Stop message box
private void metroTile7_Click(object sender, EventArgs e)
{
MetroFramework.MetroMessageBox.Show(this, "Stop", "Message", MessageBoxButtons.OKCancel, MessageBoxIcon.Stop);
}
//OK message box
private void metroTile8_Click(object sender, EventArgs e)
{
MetroFramework.MetroMessageBox.Show(this, "None");
}
}
}
Through the c# example above, you've learned how to use metro ui framework to create Metro MessageBox types in c# .net windows forms application.
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