when do I need Thread? whats that?...
با درود
در این بلاگ تجربه ای راجب اینکه آیا در برنامه ام نیازی به ترد دارم یا نه را به اشتراک گذاشته ام:
در ادامه کد مربوط به الگوریتم رمز گذاری سزار را با زبان c# می نویسم. در این برنامه ابتدا متن را از فایلی خوانده و الگوریتم را بر روی آن با تعداد شیفت 3 می نویسم.
<pre><code class="language-csharp">
namespace CaesarCiper
{
public partial class Form1 : Form
{
String line;
StringBuilder stb, stbS;
string[] lineWords;
public Form1()
{
InitializeComponent();
}
private void btnStart_Click(object sender, EventArgs e)
{
ReadFileToStringBuilder();
doCaesarCiper();
}
private void ReadFileToStringBuilder()
{
try
{
//Pass the file path and file name to the StreamReader constructor
StreamReader sr = new StreamReader("D:\\project\\testCaesar\\ceasar.txt");
//Read the first line of text
stb = new StringBuilder(sr.ReadToEnd());
sr.Close();
txtFile.Text = stb.ToString();
}
catch (Exception e)
{
txtMsg.Text = "Exception: " + e.Message;
}
finally
{
txtMsg.Text += "finally: \n";
}
}
private void doCaesarCiper()
{
stbS = new StringBuilder();
int nShift = 3;
int i = 0;
Char ch;
while (i < stb.Length)
{
ch = stb[i];
if (Char.IsLetter(stb[i]))
{
if (Char.IsUpper(stb[i]))
{
ch = (Char)(((int)stb[i] + nShift - 65) % 26 + 65);
}
else if (Char.IsLetter(stb[i]) && Char.IsLower(stb[i]))
{
ch = (Char)(((int)stb[i] + nShift - 97) % 26 + 97);
}
}
i++;
stbS.Append(ch);
}
txtsecured.Text = stbS.ToString();
txtMsg.Text += "doCaesarCiper:\n ";
Thread.Sleep(2000);
}
private void ReadFile()
{
try
{
//Pass the file path and file name to the StreamReader constructor
StreamReader sr = new StreamReader("D:\\project\\testCaesar\\ceasar.txt");
//Read the first line of text
line = sr.ReadLine();
//Continue to read until you reach end of file
while (line != null)
{
//write the line to console window
txtFile.Text += line;
//Read the next line
line = sr.ReadLine();
// lineWords = line.Split(' ');
}
//close the file
sr.Close();
Console.ReadLine();
txtMsg.Text += "Read Finished \n";
}
catch (Exception e)
{
txtMsg.Text = "Exception: " + e.Message;
}
finally
{
txtMsg.Text += "finally: \n";
}
Thread.Sleep(2000);
}
}
}
</code></pre>
