DbParameter Class

Reference

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

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: Object
DbParameter

Inheritance: Object

MarshalByRefObject
DbParameter

Derived: System.Data.EntityClient.EntityParameter

System.Data.Odbc.OdbcParameter

System.Data.OleDb.OleDbParameter

System.Data.OracleClient.OracleParameter

System.Data.SqlClient.SqlParameter

Implements: IDataParameter IDbDataParameter

Constructors

DbParameter()

Initializes a new instance of the DbParameter class.

Properties

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 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.

Methods

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

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

Tuote	Versiot
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Jaa