Numeral for given expanded form

protected void Button1_Click(object sender, EventArgs e)

    {

        Hashtable hashTable = new Hashtable();

        hashTable.Add("one", "1");

        hashTable.Add("two", "2");

        hashTable.Add("three", "3");

        hashTable.Add("four", "4");

        hashTable.Add("five", "5");

        hashTable.Add("six", "6");

        hashTable.Add("seven", "7");

        hashTable.Add("eight", "8");

        hashTable.Add("nine", "9");

        hashTable.Add("ten", "10");

        hashTable.Add("eleven", "11");

        hashTable.Add("twelve", "12");

        hashTable.Add("thirteen", "13");

        hashTable.Add("fourteen", "14");

        hashTable.Add("fifteen", "15");

        hashTable.Add("sixteen", "16");

        hashTable.Add("seventeen", "17");

        hashTable.Add("eighteen", "18");

        hashTable.Add("nineteen", "19");

        hashTable.Add("twenty", "20");

        hashTable.Add("thirty", "30");

        hashTable.Add("fourty", "40");

        hashTable.Add("fifty", "50");

        hashTable.Add("sixty", "60");

        hashTable.Add("seventy", "70");

        hashTable.Add("eighty", "80");

        hashTable.Add("ninety", "90");

        hashTable.Add("hundred", "100");

        hashTable.Add("thousand", "1000");

        hashTable.Add("lakh", "100000");

        hashTable.Add("crore", "10000000");

        string wordValue = TextBox1.Text.Trim().ToLower();

        string[] strArray = wordValue.Split(' ');

        int value = 0;

        int tempValue = 0;

        foreach (string s in strArray)

        {

            if (object.Equals(s, "hundred") || object.Equals(s, "thousand") || object.Equals(s, "lakh") || object.Equals(s, "crore"))

            {

                value += tempValue *  int.Parse(hashTable[s].ToString());

                tempValue = 0;

            }

            else

            {

                if (hashTable.ContainsKey(s))

                {

                    tempValue +=  int.Parse(hashTable[s].ToString());

                }

            }

        }

        TextBox1.Text = (value + tempValue).ToString();

    }

Happy Coding!