public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        public class inputbox
        {
            # region private windows contols  and constructor
            private static Button btnok;
            private static Button btncancel;

            public inputbox()
            {
            }


        }
            #endregion

        #region windows form code
        private void button1_Click(object sender, EventArgs e)
        {
            InputBoxResult test = InputBox.Show("Prompt" + "\n" + "DDDD" +
                              "Prompt" + "\n" + "DDDD" +
                              "Prompt" + "\n" + "DDDD" + "Prompt" + "\n" + "DDDD" +
                              "Prompt" + "\n" + "DDDD" +
                              "Prompt" + "\n" + "DDDD"
                              , "Title", "Default", 100, 0);
        #endregion
            //if( test.ReturnCode == DialogResult.OK )
            // MessageBox.Show(test.Text);
            InputBoxResult test = inputbox.Equals("dfsdfs", "sdfsdf", "sdfsdf", 0, 100);
        }
     
    }
}