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Tostring("")
Hoe kun je de tostring functie gebruiken. voorbeeld:
.tostring("c") zet alles om in een currency
.tostring("d") zet alles om in een decimal
| Format specifier |
Name |
Description |
| C or c |
Currency |
The number is converted to a string that represents a
currency amount. The conversion is controlled by the currency format
information of the
NumberFormatInfo object used to format the number. The precision
specifier indicates the desired number of decimal places. If the
precision specifier is omitted, the default currency precision given by
the NumberFormatInfo is used. |
| D or d |
Decimal |
This format is supported for integral types only. The
number is converted to a string of decimal digits (0-9), prefixed by a
minus sign if the number is negative. The precision specifier indicates
the minimum number of digits desired in the resulting string. If
required, the number is padded with zeros to its left to produce the
number of digits given by the precision specifier. |
| E or e |
Scientific (exponential) |
The number is converted to a string of the form "-d.ddd...E+ddd"
or "-d.ddd...e+ddd", where each 'd' indicates a digit (0-9). The string
starts with a minus sign if the number is negative. One digit always
precedes the decimal point. The precision specifier indicates the
desired number of digits after the decimal point. If the precision
specifier is omitted, a default of six digits after the decimal point is
used. The case of the format specifier indicates whether to prefix the
exponent with an 'E' or an 'e'. The exponent always consists of a plus or minus sign and a minimum of three digits. The exponent is padded with
zeros to meet this minimum, if required. |
| F or f |
Fixed-point |
The number is converted to a string of the form "-ddd.ddd..."
where each 'd' indicates a digit (0-9). The string starts with a minus
sign if the number is negative. The precision specifier indicates the
desired number of decimal places. If the precision specifier is omitted,
the default numeric precision given by the NumberFormatInfo is
used. |
| G or g |
General |
The number is converted to the most compact of either
fixed-point or scientific notation, depending on the type of the number
and whether a precision specifier is present. If the precision specifier
is omitted or zero, the type of the number determines the default
precision, as indicated by the following list.
- Byte or SByte: 3
- Int16 or UInt16: 5
- Int32 or UInt32: 10
- Int64 or UInt64: 19
- Single: 7
- Double: 15
- Decimal: 29
Fixed-point notation is used if the exponent that would result from
expressing the number in scientific notation is greater than -5 and less
than the precision specifier; otherwise, scientific notation is used.
The result contains a decimal point if required and trailing zeroes are
omitted. If the precision specifier is present and the number of
significant digits in the result exceeds the specified precision, then
the excess trailing digits are removed by rounding. If scientific
notation is used, the exponent in the result is prefixed with 'E' if the
format specifier is 'G', or 'e' if the format specifier is 'g'.
The exception to the preceding rule is if the number is a Decimal
and the precision specifier is omitted. In that case, fixed-point
notation is always used and trailing zeroes are preserved. |
| N or n |
Number |
The number is converted to a string of the form
"-d,ddd,ddd.ddd...", where each 'd' indicates a digit (0-9). The string
starts with a minus sign if the number is negative. Thousand separators
are inserted between each group of three digits to the left of the
decimal point. The precision specifier indicates the desired number of
decimal places. If the precision specifier is omitted, the default
numeric precision given by the NumberFormatInfo is used. |
| P or p |
Percent |
The number is converted to a string that represents a
percent as defined by the
NumberFormatInfo.PercentNegativePattern property or the
NumberFormatInfo.PercentPositivePattern property. If the number is
negative, the string produced is defined by the
PercentNegativePattern and starts with a minus sign. The converted
number is multiplied by 100 in order to be presented as a percentage.
The precision specifier indicates the desired number of decimal places.
If the precision specifier is omitted, the default numeric precision
given by NumberFormatInfo is used. |
| R or r |
Round-trip |
The round-trip specifier guarantees that a numeric value
converted to a string will be parsed back into the same numeric value.
When a numeric value is formatted using this specifier, it is first
tested using the general format, with 15 spaces of precision for a
Double and 7 spaces of precision for a Single. If the value
is successfully parsed back to the same numeric value, it is formatted
using the general format specifier. However, if the value is not
successfully parsed back to the same numeric value, then the value is
formatted using 17 digits of precision for a Double and 9 digits
of precision for a Single. Although a precision specifier can be
appended to the round-trip format specifier, it is ignored. Round trips
are given precedence over precision when using this specifier. This
format is supported by floating-point types only. |
| X or x |
Hexadecimal |
The number is converted to a string of hexadecimal
digits. The case of the format specifier indicates whether to use
uppercase or lowercase characters for the hexadecimal digits greater
than 9. For example, use 'X' to produce "ABCDEF", and 'x' to produce
"abcdef". The precision specifier indicates the minimum number of digits
desired in the resulting string. If required, the number is padded with
zeros to its left to produce the number of digits given by the precision
specifier. This format is supported for integral types only. |
| formatString |
Value |
Result |
| C |
3764 |
$3,764.00 |
| C0 |
3764 |
$3,764 |
| C2 |
3764 |
$3,764.00 |
| C2 |
456.783 |
$456.78 |
| C2 |
456.785 |
$456.79 |
| C2 |
-75.31 |
($75.31) |
| D |
3764 |
3764 |
| D |
-53 |
-53 |
| D3 |
8 |
008 |
| D3 |
15 |
015 |
| F |
3764 |
3764.00 |
| F0 |
3764 |
3764 |
| F2 |
3764 |
3764.00 |
| F2 |
456.783 |
456.78 |
| F2 |
456.785 |
456.79 |
| F2 |
-75.31 |
-75.31 |
| N |
3764 |
3,764.00 |
| N0 |
3764 |
3,764 |
| N2 |
3764 |
3,764.00 |
| N2 |
456.783 |
456.78 |
| N2 |
456.785 |
456.79 |
| N2 |
-75.31 |
-75.31 |
| P |
.364 |
36.40 % |
| P |
-.05 |
-5.00 % |
| P1 |
.3645 |
36.5 % |
| P2 |
1.1 |
110.00% |
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