How to make it possible to use different Numeric Variables in the Input process:
As we all know the only control that could be used to enter input like "Characters & Numbers & ..etc" is the Text-box, the problem is that the program cant process mathematics processes because he thinks that the Text-box is a String only, that's why you get an error when you sub 2 numbers or divide others.

..this is a Sample on how to solve the issue:

Code:

float doc = Convert.ToSingle(textBox1.Text) / Convert.ToSingle(textBox3.Text); textBox4.Text = doc.ToString();

So the main idea is to convert it back to string in the end.

Here is a full "Simple Calculator" i made from scratch...

Code:

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace hhhhh {     public partial class Form1 : Form     {         public Form1()         {             InitializeComponent();         }         private void button1_Click(object sender, EventArgs e)         {                         switch (textBox2.Text)             {                 case "":                     MessageBox.Show("Enter +,-,*,/ Only");                     break;                 default:                     int x = Convert.ToInt32(textBox1.Text);                     int y = Convert.ToInt32(textBox3.Text);                     int z;                     char t = Convert.ToChar(textBox2.Text);                     switch (t)                     {                         case '+':                             z = Convert.ToInt32(textBox1.Text) + Convert.ToInt32(textBox3.Text);                             textBox4.Text = z.ToString();                             break;                         case '-':                             z = Convert.ToInt32(textBox1.Text) - Convert.ToInt32(textBox3.Text);                             textBox4.Text = z.ToString();                             break;                         case '*':                             z = Convert.ToInt32(textBox1.Text) * Convert.ToInt32(textBox3.Text);                             textBox4.Text = z.ToString();                             break;                         case '/':                             float doc = Convert.ToSingle(textBox1.Text) / Convert.ToSingle(textBox3.Text);                             textBox4.Text = doc.ToString();                             break;                     }                     break;             }                             }         private void button2_Click(object sender, EventArgs e)         {             MessageBox.Show("NeptuneHACK!");         }         } }

I need to sharpen up on c#..

I'd have used type-casting for this in a C based program!

But clearly there are some large differences in programing styles.!

This would prove quite useful! Thanks!

I need to sharpen up on c#..

I'd have used type-casting for this in a C based program!

But clearly there are some large differences in programing styles.!

This would prove quite useful! Thanks!

NP, Glad I could help.