C#•2y ago

❔ How would I call a method created as a top level statement outside of the initial file?

I have Program.cs with a method that is a static int,

static int Example()

static int Example()

and have tried to call it in a new file called Test.cs, by calling

Program.Example()

Program.Example()

but get the error: Cannot use local variable or local function declared in a top-level statement in this context

15 Replies

TheRanger•2y ago

can u show code? show ur Program.cs

dankmememachineOP•2y ago

Console.WriteLine(CountWords(args[0], args[1]));
static int CountWords(string file, string word) => System.Text.RegularExpressions.Regex.Matches(File.ReadAllText(file), $@"\b{word}\b", System.Text.RegularExpressions.RegexOptions.IgnoreCase).Count;

Console.WriteLine(CountWords(args[0], args[1]));
static int CountWords(string file, string word) => System.Text.RegularExpressions.Regex.Matches(File.ReadAllText(file), $@"\b{word}\b", System.Text.RegularExpressions.RegexOptions.IgnoreCase).Count;

TheRanger•2y ago

thats the whole Program.cs ?

dankmememachineOP•2y ago

it would be this script:

class Test
{
    public static void TestMethod(string file, string word) => Console.WriteLine(Program.CountWords(file, word)); 
}

class Test
{
    public static void TestMethod(string file, string word) => Console.WriteLine(Program.CountWords(file, word)); 
}

and yes

TheRanger•2y ago

so calling Test.TestMethod gives u the error u mentioned above?

dankmememachineOP•2y ago

yes

TheRanger•2y ago

i dont see u calling Test.TestMethod here

dankmememachineOP•2y ago

I found a solution by refactoring the code I believe, it was changed since the original question. I was able to call by using a partial program class like so:

Test.TestMethod(args[0], args[1]);

public static partial class Program 
{
    public static int CountWords(string file, string word) => System.Text.RegularExpressions.Regex.Matches(File.ReadAllText(file), $@"\b{word}\b", System.Text.RegularExpressions.RegexOptions.IgnoreCase).Count;
}

Test.TestMethod(args[0], args[1]);

public static partial class Program 
{
    public static int CountWords(string file, string word) => System.Text.RegularExpressions.Regex.Matches(File.ReadAllText(file), $@"\b{word}\b", System.Text.RegularExpressions.RegexOptions.IgnoreCase).Count;
}

TheRanger•2y ago

u can just not use Top Level statement and use the old way

Pobiega•2y ago

All methods made in a TLS file are local

TheRanger•2y ago

public class Program
{
   public static void Main(string[] args)
   {
         Test.TestMethod(args[0], args[1]);
   }

     public static int CountWords(string file, string word) => System.Text.RegularExpressions.Regex.Matches(File.ReadAllText(file), $@"\b{word}\b", System.Text.RegularExpressions.RegexOptions.IgnoreCase).Count;
}

public class Program
{
   public static void Main(string[] args)
   {
         Test.TestMethod(args[0], args[1]);
   }

     public static int CountWords(string file, string word) => System.Text.RegularExpressions.Regex.Matches(File.ReadAllText(file), $@"\b{word}\b", System.Text.RegularExpressions.RegexOptions.IgnoreCase).Count;
}

dankmememachineOP•2y ago

right that works, i was trying to create a code golf solution and wanted to keep the file at a minimum lines, i could not find a way to make that method accessible by another script in the shortest form that I first provided there are other ways to do this, I was trying to see if there was a way to access a method defined as a top level statement elsewhere in the code

TheRanger•2y ago

u cant as they are local methods

Anton•2y ago

you have to wrap it in a class

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ How would I call a method created as a top level statement outside of the initial file?