AdoDotNetParameter Class
Definition
Important
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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 whose underlying technology is ADO.NET.
public ref class AdoDotNetParameter : Microsoft::VisualStudio::Data::Framework::DataParameterpublic class AdoDotNetParameter : Microsoft.VisualStudio.Data.Framework.DataParametertype AdoDotNetParameter = class
inherit DataParameterPublic Class AdoDotNetParameter
Inherits DataParameter- Inheritance
Constructors
| AdoDotNetParameter(DbParameter) |
Initializes a new instance of the AdoDotNetParameter class with a parameter object. |
| AdoDotNetParameter(DbParameter, Boolean) |
Initializes a new instance of the AdoDotNetParameter class with a parameter object and an indication of whether the parameter is derived using the DeriveParameters(String, DataCommandType, Int32) method. |
| AdoDotNetParameter(String) |
Initializes a new instance of the AdoDotNetParameter class with a parameter string value. |
| AdoDotNetParameter(String, Boolean) |
Initializes a new instance of the AdoDotNetParameter class with the name of the data provider and an indication of whether the parameter is derived using the DeriveParameters(String, DataCommandType, Int32) method. |
Fields
| NullSize |
A public size constant holding the value of zero. (Inherited from DataParameter) |
Properties
| DefaultSize |
Gets an integer value specifying the default size for the current parameter type. (Inherited from DataParameter) |
| Descriptor |
Gets information that describes the data parameter. (Inherited from DataParameter) |
| Direction |
Gets or sets a DataParameterDirection object specifying the direction of the parameter. (Inherited from DataParameter) |
| HasDescriptor |
Gets a value indicating whether the data parameter exposes its IVsDataParameterDescriptor implementation through the Descriptor property. |
| IsDerived |
Gets a Boolean value that indicates whether the current parameter was derived from the data source. (Inherited from DataParameter) |
| IsFixedSize |
Gets a value indicating whether the size for the current parameter type is fixed. |
| IsNullable |
Gets a Boolean value indicating whether the current parameter can have a null value provided that it is derived. (Inherited from DataParameter) |
| IsOptional |
Gets a Boolean value indicating whether the current parameter is optional, provided that it is derived. (Inherited from DataParameter) |
| Name |
Gets or sets the string literal name of the current parameter. (Inherited from DataParameter) |
| Parameter |
Gets the DbParameter object representing the command parameter. |
| Size |
Gets or sets an integer value specifying the size of the parameter. (Inherited from DataParameter) |
| Type |
Gets or sets the data source–specific type of the parameter. (Inherited from DataParameter) |
| Value |
Gets or sets the value of the parameter. (Inherited from DataParameter) |
Methods
| GetDirectionCore() |
Retrieves the parameter direction. |
| GetIsNullableCore() |
Retrieves a Boolean value indicating whether this parameter can be null. |
| GetIsOptionalCore() |
Retrieves a Boolean value indicating whether the parameter is optional. (Inherited from DataParameter) |
| GetNameCore() |
Retrieves the name of the parameter. |
| GetSizeCore() |
Retrieves an integer value specifying the size of the parameter. |
| GetTypeCore() |
Retrieves the data source–specific type of the parameter. |
| GetTypeFrom(Object) |
Maps the value type to a DbType value and returns the string equivalent. |
| GetValueCore() |
Retrieves the value of a specified parameter. |
| IsSupportedDirection(DataParameterDirection) |
Retrieves a Boolean value indicating whether the specified parameter direction is supported. (Inherited from DataParameter) |
| IsValidType(String) |
Retrieves a Boolean value indicating whether the specified data source–specific type is a valid type. |
| OnDirectionChanged() |
Called when the Direction property is changed to signal a change in the parameter direction. (Inherited from DataParameter) |
| OnDirectionChanging(DataParameterDirection) |
Called when the Direction property is about to change. (Inherited from DataParameter) |
| OnNameChanged() |
Called when the Name property has changed. (Inherited from DataParameter) |
| OnNameChanging(String) |
Called when the Name property is about to change. (Inherited from DataParameter) |
| OnSizeChanged() |
Called when the Size property has changed. (Inherited from DataParameter) |
| OnSizeChanging(Int32) |
Called when the Size property is about to change. (Inherited from DataParameter) |
| OnTypeChanged() |
Called when the Type property has changed. (Inherited from DataParameter) |
| OnTypeChanging(String) |
Called when the Type property is about to change. (Inherited from DataParameter) |
| OnValueChanged() |
Called when the Value property has changed. (Inherited from DataParameter) |
| OnValueChanging(Object) |
Called when the Value property is about to change. (Inherited from DataParameter) |
| Parse(String) |
Gets the DbType and attempts to parse the input string value into the correct type by using primitive type conversions (like Byte.Parse and Int32.Parse). |
| SetDirectionCore(DataParameterDirection) |
Sets the direction of the parameter by using the DataParameterDirection enumeration. |
| SetNameCore(String) |
Sets the name of the parameter. |
| SetSizeCore(Int32) |
Sets an integer value specifying the size of this parameter. |
| SetTypeCore(String) |
Attempts to parse the string type into a DbType enumeration value by using Enum.Parse. If this fails, the method assumes DbType.Object as the correct DbType. |
| SetValueCore(Object) |
Sets the value of the parameter. |
| ToString() |
Retrieves a string representation of the value of the current parameter. (Inherited from DataParameter) |
| TryConvertValue(Object, String) |
Attempts to convert the specified value to the specified type. (Inherited from DataParameter) |