DbParameter Class
.NET Framework 4.5
[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]
Represents a parameter to a DbCommand and optionally, its mapping to a DataSet column. For more information on parameters, see Configuring Parameters and Parameter Data Types (ADO.NET).
Namespace: System.Data.Common
Assembly: System.Data (in System.Data.dll)
The DbParameter type exposes the following members.
| Name | Description | |
|---|---|---|
|
DbType | Gets or sets the DbType of the parameter. |
|
|
Direction | Gets or sets a value that indicates whether the parameter is input-only, output-only, bidirectional, or a stored procedure return value parameter. |
|
|
IsNullable | Gets or sets a value that indicates whether the parameter accepts null values. |
|
|
ParameterName | Gets or sets the name of the DbParameter. |
|
|
Size | Gets or sets the maximum size, in bytes, of the data within the column. |
|
|
SourceColumn | Gets or sets the name of the source column mapped to the DataSet and used for loading or returning the Value. |
|
|
SourceColumnNullMapping | Sets or gets a value which indicates whether the source column is nullable. This allows DbCommandBuilder to correctly generate Update statements for nullable columns. |
|
|
SourceVersion | Gets or sets the DataRowVersion to use when you load Value. |
|
|
Value | Gets or sets the value of the parameter. |
| Name | Description | |
|---|---|---|
|
CreateObjRef | Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object. (Inherited from MarshalByRefObject.) |
|
|
Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
|
Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
|
|
GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
|
|
GetLifetimeService | Retrieves the current lifetime service object that controls the lifetime policy for this instance. (Inherited from MarshalByRefObject.) |
|
|
GetType | Gets the Type of the current instance. (Inherited from Object.) |
|
|
InitializeLifetimeService | Obtains a lifetime service object to control the lifetime policy for this instance. (Inherited from MarshalByRefObject.) |
|
|
MemberwiseClone() | Creates a shallow copy of the current Object. (Inherited from Object.) |
|
|
MemberwiseClone(Boolean) | Creates a shallow copy of the current MarshalByRefObject object. (Inherited from MarshalByRefObject.) |
|
|
ResetDbType | Resets the DbType property to its original settings. |
|
|
ToString | Returns a string that represents the current object. (Inherited from Object.) |
| Name | Description | |
|---|---|---|
|
IDbDataParameter.Precision | Indicates the precision of numeric parameters. |
|
|
IDbDataParameter.Scale | For a description of this member, see IDbDataParameter.Scale. |
Windows 8 Consumer Preview, Windows Server 8 Beta, Windows 7, Windows Server 2008 SP2, Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
