在C＃中对LINQ的调用方法

Question

Hello this is for my C# assignment

I am trying to write a program that will take user inputted data for several things IE first name, last name etc... put it into a list then print it out with the first letter of each word capitalized.

I have searched for two days trying to figure this out but have had no luck. I have the data going to the list and can display it no problem but I am having an issue figuring out how to call the method inside the LINQ statement.

i have to use UppercaseWords method in my program. What I can't get is how to call it into the LINQ

** this is in my Main method ***

// convert first letter of each word to uppercase var MakeCap = from values in PersonInfoS let value = values.ToUpper() select value;

** This is below Main **

 public static string UppercaseWords(string Value)
    {


        char[] array = Value.ToCharArray();

        if (array.Length >= 1)
        {
            if (char.IsLower(array[0]))
            {
                array[0] = char.ToUpper(array[0]);
            }
        }

        for (int i = 1; i < array.Length; i++)
        {
            if (array[i - 1] == ' ')
            {
                if (char.IsLower(array[i]))
                {
                    array[i] = char.ToUpper(array[i]);
                }
            }
        }


        return new string(array);
    } //   end UppercaseWords

I have tried a lot of different ways to get it to work. I am posting the only version that it doesn't crash on even though there is no link to UppercaseWords in there.

also i have it all in one class right now. I did try to using two classes but that didn't help me any.

if anyone can just give me a push in the right direction i'd appreciate it because I am out of ideas.

Thank you in advance for your time

Answer 1

Simply change this:

let value = values.ToUpper()

To this:

let value = UppercaseWords(values)

As an aside, you don't need to use the let clause in this case even though you can. so your whole query can become:

var makeCap = from values in PersonInfoS       
              select UppercaseWords(values);

Answer 2

This is with method syntax which is simpler in this case.

var cappedWords = PersonInfoS.Select(UppercaseWords);

Also, you should work on that UppercaseWords method. My advice would be to first split the string like this: value.Split(' ') so you have an array of the words. Then you can iterate over those words, get the first char, ToUpper them, and after everything Join(' ') them.