/// <summary>
/// This method is implementation-specific and not intended to be used from third-party
/// code.
/// </summary>
/// <param name="item">This argument is implementation-specific and not intended to be used
/// from third-party code.</param>
/// <returns>The return value is implementation-specific and not intended to be used from
/// third-party code.</returns>
protected internal override Int32 AddInternal(Object item)
{
if (item is String s)
{
/*
* XAML will coalesce all whitespace into a single space. If
* there are no non-whitespace characters, ignore this part.
*/
if (s == " ")
{
return(-1);
}
// if there _is_ a non-whitespace character, create a new Run.
item = new TaskDialogRun(s);
}
return(base.AddInternal(item));
}
/// <summary>
/// Adds a <see cref="TaskDialogRun"/> instance to this
/// <see cref="TaskDialogTextElementCollection"/>.
/// </summary>
/// <param name="item">The <see cref="TaskDialogRun"/> to be added.</param>
public void AddRun(TaskDialogRun item)
{
Add(item);
}
