Program C# : Divide Packet Data from Protocol TCP

First Step , open C# , (u can use Sharp Develop or Visual Studio /VB or ETC)

Next , make Project ,

Next , Lets Try analisyz our operational plan ,how the program logic on mind ?

Now , We have this code packet data :

*&(ikh)(abcde304900015halo apa kabar?okeh5986edcbaio test*0iou

want to translated into like this :

. What we have to do is ?

Lets we design for :

Button

TextBox

Label

Grupbox

After finish design , ill tell u the logic how it works .

So , there's many character on that packet , but there's gate between of it , 

there's it 

"abcda" 

on input gate , n 

"ebcda" 

on output gate . that data , is between that gate.

On two next character thats will be Source Port so we used 

x = teks.IndexOf("abcde");

y = teks.IndexOf("edcba");

string sourceport = teks.Substring(x+5,2);

x1 = x + 5 ;

Next Destination addres

string destinationaddress = teks.Substring(x1+2,2);

x2 = x1 + 2;

Next HLEN

string HLEN = teks.Substring(x2+2,5);

x3 = x2 + 2;

x4 = x3 + 5;

y2 = y - 4;

Next CRC 

string CRC = teks.Substring(y2,4);

xy = y2 - x4;

Next DATA

string DATA = teks.Substring(x4,xy);

textBox1.Text = Convert.ToString(sourceport);

textBox2.Text = Convert.ToString(destinationaddress);

textBox3.Text = Convert.ToString(HLEN);

textBox4.Text = Convert.ToString(CRC);

textBox5.Text = Convert.ToString(DATA);

As we can se , these above i use variable x + something , its mean the index ., 

at where the index what will found 

So here the coding

So lets compile it