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Parameter Members

Provides a mechanism that data source controls use to bind to application variables, user identities and choices, and other data. Serves as the base class for all ASP.NET parameter types.

The Parameter type exposes the following members.

  NameDescription
Public method Parameter Overloaded. Initializes a new instance of the Parameter class.
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  NameDescription
Protected method Clone Returns a duplicate of the current Parameter instance.
Public method Static member ConvertDbTypeToTypeCode Converts a DbType value to an equivalent TypeCode value.
Public method Static member ConvertTypeCodeToDbType Converts a TypeCode value to an equivalent DbType value.
Public method Equals Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected method Evaluate Updates and returns the value of the Parameter object.
Protected method Finalize Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public method GetDatabaseType Gets the DbType value that is equivalent to the CLR type of the current Parameter instance.
Public method GetHashCode Serves as a hash function for a particular type. (Inherited from Object.)
Public method GetType Gets the type of the current instance. (Inherited from Object.)
Protected method LoadViewState Restores the data source view's previously saved view state.
Protected method MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Protected method OnParameterChanged Calls the OnParametersChanged method of the ParameterCollection collection that contains the Parameter object.
Protected method SaveViewState Saves the changes to the Parameter object's view state since the time the page was posted back to the server.
Protected method SetDirty Marks the Parameter object so its state will be recorded in view state.
Public method ToString Converts the value of this instance to its equivalent string representation. (Overrides Object::ToString().)
Protected method TrackViewState Causes the Parameter object to track changes to its view state so they can be stored in the control's ViewState object and persisted across requests for the same page.
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  NameDescription
Public property ConvertEmptyStringToNull Gets or sets a value indicating whether the value that the Parameter object is bound to should be converted to nullptr if it is String::Empty.
Public property DbType Gets or sets the database type of the parameter.
Public property DefaultValue Specifies a default value for the parameter, should the value that the parameter is bound to be uninitialized when the Evaluate method is called.
Public property Direction Indicates whether the Parameter object is used to bind a value to a control, or the control can be used to change the value.
Protected property IsTrackingViewState Gets a value indicating whether the Parameter object is saving changes to its view state.
Public property Name Gets or sets the name of the parameter.
Public property Size Gets or sets the size of the parameter.
Public property Type Gets or sets the type of the parameter.
Protected property ViewState Gets a dictionary of state information that allows you to save and restore the view state of a Parameter object across multiple requests for the same page.
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  NameDescription
Explicit interface implemetation Private method ICloneable::Clone Returns a duplicate of the current Parameter instance.
Explicit interface implemetation Private property IStateManager::IsTrackingViewState Infrastructure. Gets a value indicating whether the Parameter object is saving changes to its view state.
Explicit interface implemetation Private method IStateManager::LoadViewState Infrastructure. Restores the data source view's previously saved view state.
Explicit interface implemetation Private method IStateManager::SaveViewState Infrastructure. Saves the changes to the Parameter object's view state since the time the page was posted back to the server.
Explicit interface implemetation Private method IStateManager::TrackViewState Infrastructure. Causes the Parameter object to track changes to its view state so they can be stored in the control's ViewState object and persisted across requests for the same page.
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