save file in binary using c#

Question

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Hi,
here is code I use to save content of textbox in txt format.

C#

private void button2_Click(object sender, RoutedEventArgs e)
       {
           SaveFileDialog mydialogbox = new SaveFileDialog();
           mydialogbox.DefaultExt = ".txt";
           mydialogbox.Filter = "Text documents (.txt)|*.txt";
           Nullable<bool> result = mydialogbox.ShowDialog();
           if (result == true)
           {
               string filename = mydialogbox.FileName;
              System.IO.File.WriteAllText(filename, textBox1.Text);
           }


        }

Now, I want to allow users to save file also in binary format (beside txt) by selecting option in combobox. Combobox contains 2 values as follows:
1. Save in txt
2. Save in binary
Please, how should I modify my code above in order to make this working.
Thanks.

Posted 28-Nov-12 1:12am

AlmirM

Updated 28-Nov-12 1:59am

sinhasourabh

v2

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[no name] 28-Nov-12 8:00am

What you have done / researched for binary conversion ?

1 solution

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Ravi Bhavnani · Accepted Answer · 2012-11-28T02:20:00

Create a FileStream, attach a BinaryWriter to it, and serialize data using the various BinaryWriter.Write() overloads. Here's an example of the top of my head:

C#

int i = 123;
string s = "Hello";
double d = 1.23456;

using (FileStream fs = new FileStream (@"C:\foo.dat", FileMode.CreateNew)) {
  using (BinaryWriter bw = new BinaryWriter (fs) {
    bw.Write (i);
    bw.Write (s);
    bw.Write (d);
  }
}

/ravi