how to show message in c# code after Recieve Data from socket ?

In the button click event handler:

MessageBox.Show("Button Clicked!");

// The simplest overload of MessageBox.Show. [1]
//
MessageBox.Show("Dot Net Perls is awesome.");
//
// Dialog box with text and a title. [2]
//
MessageBox.Show("Dot Net Perls is awesome.",
"Important Message");
//
// Dialog box with two buttons: yes and no. [3]
//
DialogResult result1 = MessageBox.Show("Is Dot Net Perls awesome?",
"Important Question",
MessageBoxButtons.YesNo);
//
// Dialog box with question icon. [4]
//
DialogResult result2 = MessageBox.Show("Is Dot Net Perls awesome?",
"Important Query",
MessageBoxButtons.YesNoCancel,
MessageBoxIcon.Question);