<p>I know how to program Console application with parameters, example : myProgram.exe param1 param2.</p>

<p>My question is, how can I make my program works with |, example : echo "word" | myProgram.exe?</p>

You need to use
```
Console.Read()
```
and
```
Console.ReadLine()
```
as if you were reading user input. Pipes replace user input transparently. You can't use both easily (although I'm sure it's quite possible...).
Edit:
A simple
```
cat
```
style program:
```
```
class Program
{
    static void Main(string[] args)
    {
        string s;
        while ((s = Console.ReadLine()) != null)
        {
            Console.WriteLine(s);
        }

    }
}
```
```
And when run, as expected, the output:
```
C:\...\ConsoleApplication1\bin\Debug>echo "Foo bar baz" | ConsoleApplication1.exe
"Foo bar baz"

C:\...\ConsoleApplication1\bin\Debug>
```