I need help with this HW$,$ Here's what it asked for, There's some lines of code That I have an idea I need to use, but if you can answer this with this criteria that will help a lot!:

In This HW$,$ you will need to create the class called "MyText" that does text file manipulation. Here are the operations:

$1.)$One empty constrcutor and another is passed the name of the file

public MyText$()\{\}$

public MyText$($string fileName$)\{\}$

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$2.)$Read and return the text file as a string

public string readTextFile$()$

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$3.)$Find the occurrences of a substring in a file by returning a set containing the line numbers of where the substring is found

public List findSubString$($string str$)$

$4.)$Return the line string by line number

public string getLine$($int lineNumber$)$

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$5.)$Return the line number where the first occurrence of the substring is found and the column

public int substringFirstFind$($string substring, out int col$)$

$6.)$Add a substring to any given line at a given location

$//$ Insert any text at any location in any selected line

$//$ the method returns bool which indicates success or not

public bool insertSubstring$($string str$,$ int lineNumber, int col$)$

$7.)$Saving a copy of the original text file using a new fileName with any modificatoins from operation $6.$

public bool saveCopy$($string fileName$)$

Use only C#$.$

The class will have data members, there should be at least one called $\_$fileName

You need to figure out the class variables you need to use $($Hint: there should be at least one, take a look at the constructor$)$

You do not need to write the Main method.