[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] | Reference for unit 'sysutils' (#rtl)

# TStringHelper.ToInt64

Convert string to 64-bit signed integer

## Declaration

Source position: syshelph.inc line 96

`public class function TStringHelper.ToInt64(`
`const S: string`
`):Int64; overload; function TStringHelper.ToInt64: Int64; overload;`

## Description

ToInt64 returns the contents of the string S as a 64-bit signed integer value (if possible). It uses StrToInt64 to convert the value to an 64-bit sized integer value.

## Errors

If the string contains a value that cannot be translated to an integer value, an EConvertError exception may be raised.

## See also

StrToInt64 |  | Convert a string to an Int64 value.
EConvertError |  | Conversion error.
TStringHelper.ToBoolean |  | Convert string to boolean
TStringHelper.ToDouble |  | Convert string to double-sized floating point value
TStringHelper.ToExtended |  | Convert string to extended-sized floating point value
TStringHelper.ToInteger |  | Convert string to 32-bit signed integer
TStringHelper.ToSingle |  | Convert string to single-sized floating point value