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

# TStringHelper.ToBoolean

Convert string to boolean

## Declaration

Source position: syshelph.inc line 93

`public class function TStringHelper.ToBoolean(`
`const S: string`
`):Boolean; overload; function TStringHelper.ToBoolean: Boolean; overload;`

## Description

ToBoolean returns the contents of the string S as a boolean (if possible). It uses StrToBool to convert the value to a boolean.

## Errors

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

## See also

StrToBool |  | Convert a string to a boolean value
EConvertError |  | Conversion error.
TStringHelper.ToDouble |  | Convert string to double-sized floating point value
TStringHelper.ToExtended |  | Convert string to extended-sized floating point value
TStringHelper.ToInt64 |  | Convert string to 64-bit signed integer
TStringHelper.ToInteger |  | Convert string to 32-bit signed integer
TStringHelper.ToSingle |  | Convert string to single-sized floating point value