This document defines a Form1 class that inherits from the Form class. The Form1 class contains text boxes and label controls. It also contains methods that are called by button clicks to perform operations on numbers and strings. The number operations include summing and counting digits. The string operations include concatenation, counting repetitions of a character, removing the first character, and removing the character at a given index. The results of the operations are displayed in the label controls.

1. {<br /> public partial class Form1 : Form<br /> {<br /> public Form1()<br /> {<br /> InitializeComponent();<br /> }<br /> CNaturales num = new CNaturales();<br /> CCadenas pal = new CCadenas();<br /> private void button1_Click(object sender, EventArgs e)<br /> {<br /> num.Pnumero= Convert.ToInt16(txt1.Text);<br /> int n = num.SumarDigitos();<br /> lb1.Text = Convert.ToString(n);<br /> }<br /> private void button2_Click(object sender, EventArgs e)<br /> {<br /> num.Pnumero = Convert.ToInt16(txt1.Text);<br /> int n = num.ContarDigitos();<br /> lb2.Text = Convert.ToString(n);<br /> }<br /> private void button3_Click(object sender, EventArgs e)<br /> {<br /> pal.Ppalabra = txt1.Text;<br /> string y = txt2.Text;<br /> string n = pal.Concatenar(y);<br /> lb3.Text = Convert.ToString(n);<br /> }<br /> private void button4_Click(object sender, EventArgs e)<br /> {<br /> pal.Ppalabra = txt1.Text;<br /> char y = Convert.ToChar(txt2.Text);<br /> int n = pal.Repeticiones(y);<br /> lb4.Text = Convert.ToString(n);<br /> }<br /> private void button5_Click(object sender, EventArgs e)<br /> {<br /> pal.Ppalabra = txt1.Text;<br /> string n = pal.EliminarPrimera();<br /> lb5.Text = Convert.ToString(n);<br /> }<br /> private void button6_Click(object sender, EventArgs e)<br /> {<br /> pal.Ppalabra = txt1.Text;<br /> pal.Pdimension = txt1.Text.Length;<br /> int i =Convert.ToInt32(txt2.Text);<br /> string n = pal.EliminarIesimo(i);<br /> lb6.Text = n;<br /> }<br /> }<br />