Get Percentage of matching two string

write this code in main method or as per you need

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CalcSimilarity("romit.mewada", "RomitMewada", true)

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private static int CalcLevensteinDistance(string left, string right)

{

    if (left == right)

    return 0;

    int[,] matrix = new int[left.LeMngth + 1, right.Length + 1];

    for (int i = 0; i <= left.Length; i++)

    // delete

    matrix[i, 0] = i;

    for (int j = 0; j <= right.Length; j++)

    // insert

    matrix[0, j] = j;

    for (int i = 0; i <>

    {

        for (int j = 0; j <>

        {

            if (left[i] == right[j])

                matrix[i + 1, j + 1] = matrix[i, j];

            else

            {

                // deletion or insertion

                matrix[i + 1, j + 1] = System.Math.Min(matrix[i, j + 1] + 1, matrix[i + 1, j] + 1);

                // substitution

                matrix[i + 1, j + 1] = System.Math.Min(matrix[i + 1, j + 1], matrix[i, j] + 1);

            }

        }

    }

    return matrix[left.Length, right.Length];

}

public static double CalcSimilarity(string left, string right, bool ignoreCase)

{

    if (ignoreCase)

    {

        left = left.ToLower();

        right = right.ToLower();

    }

    double distance = CalcLevensteinDistance(left, right);

    if (distance == 0.0f)

    return 1.0f;

    double longestStringSize = System.Math.Max(left.Length, right.Length);

    double percent = distance / longestStringSize;

    return 1.0f - percent;

}