Begin by crearting the interface
Put the id Field with its Text box
Put the button where the user will be clicking as shown below
Double click on the button and copy the code below and paste them after the brace{} of the button since they are create in method form.
Copy the auto() and paste it in the form
after runing your project will be able to see
Note:
if you need to first insert the library below
This library will allow you to automate the numbers
using System.Security.Cryptography;
public static string GetUniqueKey(int
maxSize)
{
// here you are setting the numbers of new characters to be
generated
char[] chars = new char[10000];
chars = "0123456789".ToCharArray();// here you are settin the range where the ids will be
generated
byte[] data = new byte[1];
RNGCryptoServiceProvider crypto = new RNGCryptoServiceProvider();
crypto.GetNonZeroBytes(data);
data = new byte[maxSize];
crypto.GetNonZeroBytes(data);
StringBuilder
result = new StringBuilder(maxSize);
foreach (byte b in data)
{
result.Append(chars[b % (chars.Length)]);
}
return result.ToString();
}
private void auto()
{
// no is the name for the textbox where you want to display
no.Text = "HP/" +
GetUniqueKey(4);
}
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