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DbParameter Class

Definition

Namespace:
System.Data.Common
Assembly:
System.Data.Common.dll
Assemblies:
netstandard.dll, System.Data.Common.dll
Assembly:
System.Data.dll
Assembly:
netstandard.dll
Source:
DbParameter.cs
Source:
DbParameter.cs
Source:
DbParameter.cs
Source:
DbParameter.cs
Source:
DbParameter.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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.

public ref class DbParameter abstract
public ref class DbParameter abstract : MarshalByRefObject, System::Data::IDbDataParameter
public ref class DbParameter abstract : System::Data::IDbDataParameter
public abstract class DbParameter
public abstract class DbParameter : MarshalByRefObject, System.Data.IDbDataParameter
public abstract class DbParameter : System.Data.IDbDataParameter
type DbParameter = class
type DbParameter = class
 inherit MarshalByRefObject
 interface IDataParameter
 interface IDbDataParameter
type DbParameter = class
 interface IDataParameter
 interface IDbDataParameter
type DbParameter = class
 inherit MarshalByRefObject
 interface IDbDataParameter
 interface IDataParameter
Public MustInherit Class DbParameter
Public MustInherit Class DbParameter
Inherits MarshalByRefObject
Implements IDbDataParameter
Public MustInherit Class DbParameter
Implements IDbDataParameter
Inheritance
DbParameter
Inheritance
Derived
Implements

Constructors

Name Description
DbParameter()

Initializes a new instance of the DbParameter class.

Properties

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.
Precision

Gets or sets the maximum number of digits used to represent the Value property.
Scale

Gets or sets the number of decimal places to which Value is resolved.
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

Gets or sets a value that 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.

Methods

Name Description
CreateObjRef(Type)

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)
GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetLifetimeService()
Obsolete.

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()
Obsolete.

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)

Explicit Interface Implementations

Name Description
IDataParameter.SourceVersion

Gets or sets the DataRowVersion to use when loading Value.
IDbDataParameter.Precision

Indicates the precision of numeric parameters.
IDbDataParameter.Scale

For a description of this member, see Scale.

Applies to

See also

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