C#

TextBox1.Name = "TextBoxQuestion1";

Form1.Controls["TextBoxQuestion1"].Text;

TextBox tbq1 = (TextBox)Form1.Controls["TextBoxQuestion1"];

System.Windows.Controls.Image myImage = ((Image)obj);
System.Windows.Media.Imaging.BitmapImage bitmapImage = new System.Windows.Media.Imaging.BitmapImage();
bitmapImage = ((System.Windows.Media.Imaging.BitmapImage)myImage.Source);
System.Windows.Media.Imaging.PngBitmapEncoder pngBitmapEncoder = new System.Windows.Media.Imaging.PngBitmapEncoder.PngBitmapEncoder();
System.IO.FileStream stream = new System.IO.FileStream(@"C:\newImage.png", FileMode.Create);

pngBitmapEncoder.Interlace = PngInterlaceOption.On;
pngBitmapEncoder.Frames.Add(System.Windows.Media.Imaging.BitmapFrame.Create(bitmapImage));
pngBitmapEncoder.Save(stream);
stream.Flush();
stream.Close();

Sajjad Leo wrote:

I think this description will make it easy to understand.

Registry.CurrentUser.CreateSubKey("Control Panel\\Desktop\\MenuShowDelay").SetValue("Value1", "Value2");

string[] emails = File.ReadAllLines(@"test.txt");<br />
StringBuilder stringBuilder = new StringBuilder();<br />
foreach(string email in emails)<br />
{<br />
  stringBuilder.Append(email);<br />
  stringBuilder.Append(",");<br />
}<br />
File.WriteAllText(@"newtext.txt", stringBuilder.ToString());

string alltexts = File.ReadAllText(@"test.txt");<br />
      string[] emails = alltexts.Split(' ');<br />
      StringBuilder stringBuilder = new StringBuilder();<br />
      foreach (string email in emails)<br />
      {<br />
        stringBuilder.Append(email);<br />
        stringBuilder.Append(",");<br />
      }<br />
      File.WriteAllText(@"newtext.txt", stringBuilder.ToString());