Drag and drop Button and TextBox control from toolbox on windows form.

Drag and drop a TextBox and label as Enter Name .

Write code on Button click

private void btnSubmit_Click(object sender, EventArgs e)
         {
           //MessageBox will show the text entered in textbox
            MessageBox.Show("Entered name is "+textBox1.Text);
        }

Run The Project:

When you insert any text and click submit button then inserted text will show in the Message box.

Set a Button as the Cancel Button.

On Windows Form you can designate a Button control to be the cancel button. A cancel button is clicked whenever the user presses the ESC key.

privatevoid btnSubmit_Click(object sender, EventArgs e)
{          
     this.Close(); //close window Form
}
privatevoid Form2_Load(object sender, EventArgs e)
{  
       // Set button as cancel button
       this.CancelButton = btnSubmit;
}

When you press Esc key on the keyboard then Window Form will closed.

Properties of Button:

BackColor

Through BackColor properties we can change BackColor of Button.

privatevoid Form2_Load(object sender, EventArgs e)
{  //change button backcolor 
         btnSubmit.BackColor = Color.CadetBlue;
}

Output:

At run time backcolor of button will be change.

ForeColor:

privatevoid Form2_Load(object sender, EventArgs e)
{  
     //change forecolor of button text
        btnSubmit.ForeColor = Color.Red;
}

At run time ForeColor of button will be change.

Output: