August 2011

This article I am going to discuss function which convert numeric value to word for that we create one web page which return convert number to word.
To achieve this I create one simple webpage which have one textbox and one button when click on button number is converted to text and display in label see below image.

I have create on class which convert given number to text

static class NumberToWord
{
private static string[] _ones =
{
"zero",
"one",
"two",
"three",
"four",
"five",
"six",
"seven",
"eight",
"nine"
};

private static string[] _teens =
{
"ten",
"eleven",
"twelve",
"thirteen",
"fourteen",
"fifteen",
"sixteen",
"seventeen",
"eighteen",
"nineteen"
};

private static string[] _tens =
{
"",
"ten",
"twenty",
"thirty",
"forty",
"fifty",
"sixty",
"seventy",
"eighty",
"ninety"
};

// US Nnumbering:
private static string[] _thousands =
{
"",
"thousand",
"million",
"billion",
"trillion",
"quadrillion"
};

/// 
/// Converts a numeric value to words suitable for the portion of
/// a check that writes out the amount.
/// 
/// Value to be converted
/// 
public static string Convert(decimal value)
{
string digits, temp;
bool showThousands = false;
bool allZeros = true;
StringBuilder builder = new StringBuilder();
// Convert integer portion of value to string
digits = ((long)value).ToString();
// Traverse characters in reverse order
for (int i = digits.Length - 1; i >= 0; i--)
{
int ndigit = (int)(digits[i] - '0');
int column = (digits.Length - (i + 1));

// Determine if ones, tens, or hundreds column
switch (column % 3)
{
case 0:        // Ones position
showThousands = true;
if (i == 0)
{
// First digit in number (last in loop)
temp = String.Format("{0} ", _ones[ndigit]);
}
else if (digits[i - 1] == '1')
{
// This digit is part of "teen" value
temp = String.Format("{0} ", _teens[ndigit]);
// Skip tens position
i--;
}
else if (ndigit != 0)
{
// Any non-zero digit
temp = String.Format("{0} ", _ones[ndigit]);
}
else
{
// This digit is zero. If digit in tens and hundreds
// column are also zero, don't show "thousands"
temp = String.Empty;
// Test for non-zero digit in this grouping
if (digits[i - 1] != '0' || (i > 1 && digits[i - 2] != '0'))
showThousands = true;
else
showThousands = false;
}

// Show "thousands" if non-zero in grouping
if (showThousands)
{
if (column > 0)
{
temp = String.Format("{0}{1}{2}",
temp,
_thousands[column / 3],
//allZeros ? " " : ", ");
allZeros ? " " : " ");
}
// Indicate non-zero digit encountered
allZeros = false;
}
builder.Insert(0, temp);
break;

case 1:        // Tens column
if (ndigit > 0)
{
temp = String.Format("{0}{1}",
_tens[ndigit],
(digits[i + 1] != '0') ? "-" : " ");
builder.Insert(0, temp);
}
break;

case 2:        // Hundreds column
if (ndigit > 0)
{
temp = String.Format("{0} hundred ", _ones[ndigit]);
builder.Insert(0, temp);
}
break;
}
}

// Append fractional portion/cents
builder.AppendFormat(" DOLLARS and {0:00} / 100", (value - (long)value) * 100);

// Capitalize first letter
return String.Format("{0}{1}",
Char.ToUpper(builder[0]),
builder.ToString(1, builder.Length - 1));
}
}

I made following code on button click event

protected void btnconvert_Click(object sender, EventArgs e)
{
decimal number;
if(!string.IsNullOrEmpty(txtnumber.Text)&& decimal.TryParse(txtnumber.Text.Trim(),out number))
{
lblText.Text=NumberToWord.Convert(number);
}

}

it covert given number to word. This may be useful for you. Stay turned for more.
Thanks for reading. Happy coding!!