Text Compare result in c#

Question

I want to compare two text strings(nvarchar characters) & want to find their comparison result. Example:

string 1: We loved our country.it is beautiful and amazing too.
string 2: We loved our nice country.it is beautifully  amazing too.

Expected result:

No. of change: 3 
they are: nice,beautifully,and.

i have tried:

private string TextComparison(string textFirst,string textSecond)
{
    Difference difference = new Difference();
    return result = difference.DifferenceMain(textFirst, textSecond);
}

I need a function DifferenceMain() .

Answer 1

Try this

        string st1 = "We loved our country.it is beautiful and amazing too";
        string st2 = "We loved our nice country.it is beautifully  amazing too";

        List<string> diff; 
        List<string> diff1;
        IEnumerable<string> str1 = st1.Split(' ').Distinct();
        IEnumerable<string> str2 = st2.Split(' ').Distinct();

        diff = str2.Except(str1).ToList();
        diff1 = str1.Except(str2).ToList(); 

diff will give you following result
nice
beautifully
_ (Space) - as your 2nd string contains extra space

diff1 will give you following result
beautiful
and

Answer 2

Use this function.

public string[] GetChanges(string one, string two)
{
    string[] wordsonone = one.Split(" ".ToCharArray());//Creates a string array by splitting the string into individual words.

    string[] wordsontwo = two.Split(" ".ToCharArray());
    List<string> changes = new List<string>();//Create a string list to contain all the changes.
    for(int i = 0; i < wordsonone.Length; i++)
    {
        if(!wordsontwo.Contains(wordsonone[i]))//If wordsontwo doesn't contain this word.
        {
            changes.Add(wordsonone[i]);//Add this word to changes
        }
    }
    for (int i = 0; i < wordsontwo.Length; i++)
    {
        if(!wordsonone.Contains(wordsontwo[i]))
        {
            changes.Add(wordsontwo[i]);
        }
    }
    return changes.ToArray();
}

And in order to present it in your format, you would use the following.

string[] changes = GetChanges(string1,string2);
string text = "Numbers of Changes "+changes.Length+", these changes are ";
foreach(string change in changes)
{
    text += change+", ";
}
MessageBox.Show(text);