NoteMan/NoteMan/TextInput.cs

using System;
using System.Windows.Forms;

namespace NoteMan
{
    public partial class TextInput : Form
    {
        private string _returnValue;
        public TextInput()
        {
            InitializeComponent();
        }

        public new string Show()
        {
            return Show("Name?", "");
        }

        public new string ShowDialog()
        {
            return Show("Name?", "");
        }

        public string Show(string label)
        {
            return Show(label, "");
        }

        public string ShowDialog(string label)
        {
            return Show(label, "");
        }

        public string ShowDialog(string label, string value)
        {
            return Show(label, value);
        }

        public string Show(string label, string value)
        {
            _returnValue = null;
            txtInput.Text = "";
            label1.Text = label;
            txtInput.Text = value;
            base.ShowDialog();
            return _returnValue;
        }

        private void btnOK_Click(object sender, EventArgs e)
        {
            _returnValue = txtInput.Text;
            Close();
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void txtInput_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar == (char) 13)
            {
                _returnValue = txtInput.Text;
                Close();
            }
        }
    }
}