c# simple expression Definition application *help*

Hello everyone i want to write a c# windows form app that takes an expression and a Definition from a file, and when the user clicks the button it shows the definition for that expression in a text box, and i have no idea how to do it can someone please write me a simple program for educational purposes

class ReadFromFile
{
static void Main()
{
// The files used in this example are created in the topic
// How to: Write to a Text File. You can change the path and
// file name to substitute text files of your own.
// Example #1
// Read the file as one string.
string text = System.IO.File.ReadAllText(@"C:\Users\Public\TestFolder\WriteText.txt");
// Display the file contents to the console. Variable text is a string.
System.Console.WriteLine("Contents of WriteText.txt = {0}", text);
// Example #2
// Read each line of the file into a string array. Each element
// of the array is one line of the file.
string[] lines = System.IO.File.ReadAllLines(@"C:\Users\Public\TestFolder\WriteLines2.txt");
// Display the file contents by using a foreach loop.
System.Console.WriteLine("Contents of WriteLines2.txt = ");
foreach (string line in lines)
{
// Use a tab to indent each line of the file.
Console.WriteLine("\t" + line);
}
// Keep the console window open in debug mode.
Console.WriteLine("Press any key to exit.");
System.Console.ReadKey();
}

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Laxmidhar Sahoo6y ago
1. class ReadFromFile
2. {
3. static void Main()
4. {
5. // The files used in this example are created in the topic
6. // How to: Write to a Text File. You can change the path and
7. // file name to substitute text files of your own.
9. // Example #1
10. // Read the file as one string.
11. string text = System.IO.File.ReadAllText(@"C:\Users\Public\TestFolder\WriteText.txt");
13. // Display the file contents to the console. Variable text is a string.
14. System.Console.WriteLine("Contents of WriteText.txt = {0}", text);
16. // Example #2
17. // Read each line of the file into a string array. Each element
18. // of the array is one line of the file.
19. string[] lines = System.IO.File.ReadAllLines(@"C:\Users\Public\TestFolder\WriteLines2.txt");
21. // Display the file contents by using a foreach loop.
22. System.Console.WriteLine("Contents of WriteLines2.txt = ");
23. foreach (string line in lines)
24. {
25. // Use a tab to indent each line of the file.
26. Console.WriteLine("\t" + line);
27. }
29. // Keep the console window open in debug mode.
30. Console.WriteLine("Press any key to exit.");
31. System.Console.ReadKey();
32. }
0