DataType # Boolean
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DataType --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ## Description Boolean is an intrinsic data type. A Boolean can only take on the values of `True` or `False`. The default value is `False`. ## Methods
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| Name | Parameters | Returns | Shared | |----------------------------------|-------------------------------------------|---------|--------| | `FromString` | value As `String` | Boolean | ✓ | | `ToString` | | Boolean | | ## Method descriptions
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Boolean.FromString **FromString**(value As `String`) As Boolean > Returns the value passed as a Boolean. > > This method is `shared`. > > If the value is `"True"`, then `True` is returned, otherwise the `False` is returned. > > This example sets a `Value` property of a `CheckBox` to `True` by passing the `String` `True` to the FromString function. This can be useful for setting Boolean values of classes such as `CheckBox` from `Strings` coming from files or databases. > > ``` xojo > CheckBox1.Value = Boolean.FromString("True") > ```
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Boolean.ToString **ToString** As Boolean > Returns the value as a string. > > If the value is `True`, the `String` `"True"` is returned, otherwise the `String` `"False"` is returned. > > This example displays "True" or "False" in the `MessageBox` depending on whether the property is set to `True` or `False`. > > ``` xojo > MessageBox(Window1.HasCloseButton.ToString) > ``` ## Notes A Boolean is a variable that can have one of two values. In Xojo, the values are `True` or `False`. You can think of `True` as the equivalent of Yes or On, whereas `False` is equivalent to No or Off. Boolean values are `False` by default but can be set to `True` using the `True` keyword and back to `False` using the `False` keyword. The `VarType` function returns 11 when passed a Boolean variable. ## Sample code Declares a Boolean variable and sets its value to `True`: ``` xojo Var isTaxable As Boolean isTaxable = True ``` The following statement disables a TextField: ``` xojo TextField1.Enabled = False ``` ## Compatibility | | | |-----------------------|-----| | **Project Types** | All | | **Operating Systems** | All |
`False`, `True`, `VarType` functions; `And`, `Not`, `Or`, `Xor` operators; `Var`, `Static` statements; `VarType` functions;