How do I make this code so it gives the number of occurences of every word in the text in C#

string[] words = text.ToLower() //needed!
	.Split(new char[] { '.', '?', '!', ' ', ';', ':', ',' }, StringSplitOptions.RemoveEmptyEntries); 

var result = words
	.GroupBy(x=>x)
	.Select(grp=> new
	{
		word = grp.Key, 
		count = grp.Count()
	})
	.OrderByDescending(o=>o.count)
	.ToList();
		
foreach(var o in result)
{
	Console.WriteLine("{0} - {1}", o.word, o.count);
}

//declare file name
string filename = @"fullfilenamehere";
//grab text from file to string array
string[] lines = File.ReadAllLines(filename);
//create a dictionary, which will hold word and number of occurencies of that word
Dictionary<string, int> listofwords = new Dictionary<string, int>();
//for each line 
foreach(string line in lines)
{
	//split line into words
	string[] words = line.ToLower().Split(new char[] { '.', '?', '!', ' ', ';', ':', ',', '-' }, StringSplitOptions.RemoveEmptyEntries); 
	//for each word 
	foreach(string word in words)
		if(!listofwords.ContainsKey(word)) //if word does not exists on listofwords
			listofwords.Add(word, 1); //add word and set no. of occurencies to 1
		else
			listofwords[word] += 1; //increase no. of occurencies
}
//display result
Console.WriteLine("Word - No. of occurencies");
foreach(KeyValuePair<string, int> kvp in listofwords)
{
	Console.WriteLine("{0} - {1}", kvp.Key, kvp.Value);
}