how do i check if a string contains only words and space

js · 2024-04-24T16:28:08.523Z

ive got an if statement that needs to check if a string contains only letters or spaces, online i can only find how to check for only letters which then flags the spaces as not letters

J

jsOP•4/24/24, 4:29 PM

like for example if the string is "Fast Food Emporium"

J

jsOP•4/24/24, 4:29 PM

it would flag as invalid as it has spaces

J

jsOP•4/24/24, 4:29 PM

even though that is valid

J

jsOP•4/24/24, 4:29 PM

i just want to make sure it only contains

J

jsOP•4/24/24, 4:29 PM

characters and spaces

J

jsOP•4/24/24, 4:39 PM

public static void ContainsOnlyLetters(this string input)
{
    int count5 = 0;
    foreach (char c in input) 
    {
        if (!Char.IsLetterOrDigit(c))
            count5++;
        else if (!Char.IsWhiteSpace(c))
            count5++;
    }

    if (count5 != input.Length)
    {
        Console.WriteLine("Invalid restaurant name in file, please select a valid file.");
        LoadFoodMenu();
    }
    else
    {
        return;
    }

}

public static void ContainsOnlyLetters(this string input)
{
    int count5 = 0;
    foreach (char c in input) 
    {
        if (!Char.IsLetterOrDigit(c))
            count5++;
        else if (!Char.IsWhiteSpace(c))
            count5++;
    }

    if (count5 != input.Length)
    {
        Console.WriteLine("Invalid restaurant name in file, please select a valid file.");
        LoadFoodMenu();
    }
    else
    {
        return;
    }

}

public static void ContainsOnlyLetters(this string input)
{
    int count5 = 0;
    foreach (char c in input) 
    {
        if (!Char.IsLetterOrDigit(c))
            count5++;
        else if (!Char.IsWhiteSpace(c))
            count5++;
    }

    if (count5 != input.Length)
    {
        Console.WriteLine("Invalid restaurant name in file, please select a valid file.");
        LoadFoodMenu();
    }
    else
    {
        return;
    }

}

public static void ContainsOnlyLetters(this string input)
{
    int count5 = 0;
    foreach (char c in input) 
    {
        if (!Char.IsLetterOrDigit(c))
            count5++;
        else if (!Char.IsWhiteSpace(c))
            count5++;
    }

    if (count5 != input.Length)
    {
        Console.WriteLine("Invalid restaurant name in file, please select a valid file.");
        LoadFoodMenu();
    }
    else
    {
        return;
    }

}

J

jsOP•4/24/24, 4:39 PM

i managed this

J

jsOP•4/24/24, 4:39 PM

is that ok

J

jsOP•4/24/24, 4:39 PM

?

J

jsOP•4/24/24, 4:41 PM

doesnt work

J

jsOP•4/24/24, 4:41 PM

ugh

D

daniel2•4/24/24, 4:42 PM

https://learn.microsoft.com/en-us/dotnet/api/system.char.isletter?view=net-8.0

Char.IsLetter Method (System)

Indicates whether a Unicode character is categorized as a Unicode letter.

J

jsOP•4/24/24, 4:43 PM

i got it working

J

jsOP•4/24/24, 4:43 PM

but the api is so confusing to me

J

jsOP•4/24/24, 4:43 PM

as a beginner

J

jsOP•4/24/24, 4:43 PM

is that normal

A

Angius•4/24/24, 5:16 PM

Depends what exactly is so confusing

A

Angius•4/24/24, 5:16 PM

But yes, it's generally normal to be confused about the things you're new at

how do i check if a string contains only words and space

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