	名前	解説
	AllowBlank	Gets or sets a value indicating whether the value of this parameter can be an empty string. Ignored unless DataType is String.
	AllowedValues	Gets a list of allowed parameter values. This can be null, which means that the list of allowed values is not supported. This can also be an empty list, which means that the list of allowed values is empty (possible if for example the list is filled by a query, and the query returned an empty result).
	DataType	Gets or sets the data type of this parameter.
	DocumentSource	Gets a C1DocumentSource owning this Parameter object.
	Hidden	Gets or sets a value indicating whether this parameter should be hidden from user interface. (Hidden parameters can be used for programmatic control of subreports, drillthrough reports etc.)
	MaxLength	Gets or sets the maximum length of a string parameter (0 means unlimited length). This property is ignored for non-string parameters.
	MultiValue	Gets or sets a value indicating whether this parameter can be used to pass multiple values.
	Nullable	Gets or sets a value indicating whether the value of this parameter can be null. Cannot be true if this is a multi-value parameter.
	Owner	Gets a ParameterCollection containing this Parameter object.
	Prompt	Gets or sets the prompt shown to the user when asking to enter a value for the parameter.
	Value	Gets or sets the parameter value. If MultiValue is true, the parameter value can be an array, in which case all items in that array must have the same type, and cannot be arrays.

	名前	解説
	AssignFrom	オーバーライドされます。
	CreateSame	オーバーライドされます。
	SelectAllValues

	名前	解説
	GetPropsTable
	OnPropertyChanged	Called when property of Parameter is changed.