DataParameter Members
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Represents a data parameter that is derived from a data source command, or that is passed with a command to a data source.
The DataParameter type exposes the following members.
Constructors
Name
Description
.gif "Protected method")
Overloaded.
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Methods
Name
Description
.gif "Public method")
Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Retrieves the parameter direction.
Serves as a hash function for a particular type. (Inherited from Object.)
Retrieves a Boolean value indicating whether or not this parameter can be nulla null reference (Nothing in Visual Basic).
Retrieves a Boolean value indicating whether this parameter is optional.
Retrieves the name of the parameter.
Retrieves a byte value specifying the precision of the parameter.
Retrieves a byte value specifying the scale of the parameter.
Retrieves an integer value specifying the size of the parameter.
Gets the type of the current instance. (Inherited from Object.)
Infers the data-source-specific parameter type from a parameter value.
Retrieves the data-source-specific type of the parameter.
Retrieves the value of a specified parameter.
Retrieves a Boolean value indicating whether the specified parameter direction is supported.
Retrieves a Boolean value indicating whether the specified data-source-specific type is a valid type.
Creates a shallow copy of the current Object. (Inherited from Object.)
Called when the Direction property is changed to signal a change in the parameter direction.
Called when the Direction property is about to change.
Called when the Name property has changed.
Called when the Name property is about to change.
Called when the Precision property has changed.
Called when the Precision property is about to change.
Called when the Scale property has changed.
Called when the Scale property is about to change.
Called when the Size property has changed.
Called when the Size property is about to change.
Called when the Type property has changed.
Called when the Type property is about to change.
Called when the Value property has changed.
Called when the Value property is about to change.
Disassembles a parameter value in a string format and converts the value to the correct type.
Sets the direction of the parameter using the DataParameterDirection enumeration.
Sets the name of the parameter.
Sets a byte value specifying the precision of the parameter.
Sets a byte value specifying the scale of the parameter.
Sets an integer value specifying the size of this parameter.
Sets the data type of this parameter.
Sets the value of this parameter.
Retrieves a string representation of the value of this parameter. (Overrides Object.ToString().)
Attempts to convert the specified value to the specified type.
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Properties
Name
Description
.gif "Protected property")
Retrieves a byte value specifying the default precision for the current parameter type.
Retrieves a byte value specifying the default scale for the current parameter type.
Retrieves and integer value specifying the default size for the current parameter type.
.gif "Public property")
Retrieves or sets a DataParameterDirection object specifying the direction of the parameter.
Retrieves a Boolean value that indicates whether this parameter was derived from the data source.
Retrieves a Boolean value indicating whether the precision for the current parameter type is fixed.
Retrieves a Boolean value indicating whether the scale for the current parameter type is fixed.
Retrieves a Boolean value indicating whether the size for the current parameter type is fixed.
Retrieves a Boolean value indicating whether this parameter can have a nulla null reference (Nothing in Visual Basic) value.
Retrieves a Boolean value indicating whether this parameter is optional, in cases where this parameter is a derived parameter.
Retrieves or sets the string literal name of the parameter.
Retrieves or sets a byte value specifying the precision of the parameter.
Retrieves or sets a byte value specifying the scale of the parameter.
Retrieves or sets an integer value specifying the size of the parameter.
Retrieves or sets the data-source-specific type of the parameter.
Retrieves or sets the value of the parameter.
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