Class

# UnsupportedFormatException

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

## Description

Occurs when the supplied information is in an unsupported format. This can happen in many situations, including: using a `String</api/data_types/string>` expression that cannot be evaluated, a bad `DateTime</api/data_types/datetime>` format or an inaccessible `FolderItem</api/files/folderitem>` path.

## Properties

<div class="rst-class">

table-centered_columns_3_and_4

</div>

| Name                                                  | Type                               | Read-Only | Shared |
|-------------------------------------------------------|------------------------------------|-----------|--------|
| `ErrorNumber<unsupportedformatexception.errornumber>` | `Integer</api/data_types/integer>` |           |        |
| `Message<unsupportedformatexception.message>`         | `String</api/data_types/string>`   |           |        |

## Methods

<div class="rst-class">

table-centered_column_4

</div>

| Name                                                   | Parameters                                                                                              | Returns                                    | Shared |
|--------------------------------------------------------|---------------------------------------------------------------------------------------------------------|--------------------------------------------|--------|
| `Constructor<unsupportedformatexception.constructor0>` | message As `String</api/data_types/string>` = "", errorNumber As `Integer</api/data_types/integer>` = 0 |                                            |        |
| `Stack<unsupportedformatexception.stack>`              |                                                                                                         | `String()</api/data_types/string>`         |        |
| `StackFrames<unsupportedformatexception.stackframes>`  |                                                                                                         | `StackFrame()</api/exceptions/stackframe>` |        |

## Property descriptions

<div id="unsupportedformatexception.errornumber">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

UnsupportedFormatException.ErrorNumber

**ErrorNumber** As `Integer</api/data_types/integer>`

> Used to contain an error number that describes the runtime error.

<div id="unsupportedformatexception.message">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

UnsupportedFormatException.Message

**Message** As `String</api/data_types/string>`

> Used to contain descriptive text to display when the runtime exception is encountered.

## Method descriptions

<div id="unsupportedformatexception.constructor0">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

UnsupportedFormatException.Constructor

**Constructor**(message As `String</api/data_types/string>` = "", errorNumber As `Integer</api/data_types/integer>` = 0)

> <div class="note">
>
> <div class="title">
>
> Note
>
> </div>
>
> `Constructors</api/language/constructor>` are special methods called when you create an object with the `New</api/language/new>` keyword and pass in the parameters above.
>
> </div>
>
> Used to raise your own `RuntimeException</api/exceptions/runtimeexception>` with a *message* and optional error number.

<div id="unsupportedformatexception.stack">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

UnsupportedFormatException.Stack

**Stack** As `String()</api/data_types/string>`

> Returns a `String</api/data_types/string>` array that contains a list of all of the methods in the stack from the main entrypoint to the point at which the exception was invoked.
>
> The stack contains all the method names up and including the current method name.
>
> This feature only works if the **IncludeFunctionNames** property on the App object is selected in the Shared Build Settings.
>
> In addition to your own method calls, you will also see framework method calls, but these may not always be completely accurate due to insufficient symbols for the OS to resolve.

<div id="unsupportedformatexception.stackframes">

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</div>

<div class="rst-class">

forsearch

</div>

UnsupportedFormatException.StackFrames

**StackFrames** As `StackFrame()</api/exceptions/stackframe>`

> Returns an array containing the stack when the exception was first raised.

## Notes

You can use a string expression to set the column widths via the `DesktopListBoxColumn</api/user_interface/desktop/desktoplistboxcolumn>` class or the ColumnWidths property of the `DesktopListBox</api/user_interface/desktop/desktoplistbox>`. You can use the percent sign or the "\*" symbol, as described in those sections. If you use a character that is not permitted, an <span class="title-ref">UnsupportedFormatException</span> will occur.

## Sample code

The following specification causes an <span class="title-ref">UnsupportedFormatException</span> runtime error:

``` xojo
ListBox1.ColumnWidths = "50,50i" ' not a valid width
```

## Compatibility

|                       |     |
|-----------------------|-----|
| **Project Types**     | All |
| **Operating Systems** | All |

<div class="seealso">

`RuntimeException</api/exceptions/runtimeexception>` parent class; `DateTime</api/data_types/datetime>`, `FolderItem</api/files/folderitem>`, `DesktopListBox</api/user_interface/desktop/desktoplistbox>`, `DesktopListBoxColumn</api/user_interface/desktop/desktoplistboxcolumn>` classes; `Exception</api/exceptions/exception>`, `Try</api/language/try>` statements.

</div>