OleDbParameter.DbType 属性

定义

获取或设置参数的 DbTypeGets or sets the DbType of the parameter.

public:
 virtual property System::Data::DbType DbType { System::Data::DbType get(); void set(System::Data::DbType value); };
public:
 property System::Data::DbType DbType { System::Data::DbType get(); void set(System::Data::DbType value); };
public override System.Data.DbType DbType { get; set; }
[System.ComponentModel.Browsable(false)]
[System.Data.DataSysDescription("DataParameter_DbType")]
public System.Data.DbType DbType { get; set; }
member this.DbType : System.Data.DbType with get, set
[<System.ComponentModel.Browsable(false)>]
[<System.Data.DataSysDescription("DataParameter_DbType")>]
member this.DbType : System.Data.DbType with get, set
Public Overrides Property DbType As DbType
Public Property DbType As DbType

属性值

DbType

DbType 值之一。One of the DbType values. 默认值为 StringThe default is String.

实现

属性

例外

该属性未设置为有效的 DbTypeThe property was not set to a valid DbType.

示例

下面的示例创建 OleDbParameter 并设置其一些属性。The following example creates an OleDbParameter and sets some of its properties.

public void CreateOleDbParameter()
 {
    OleDbParameter parameter = new OleDbParameter("Description", OleDbType.VarChar, 88);
    parameter.Direction = ParameterDirection.Output;
 }
Public Sub CreateOleDbParameter()
    Dim parameter As New OleDbParameter("Description", OleDbType.VarChar, 88)
    parameter.Direction = ParameterDirection.Output
End Sub 

注解

OleDbTypeDbType 已链接。The OleDbType and DbType are linked. 因此,将 DbType 更改设置 OleDbType 为支持 OleDbTypeTherefore, setting the DbType changes the OleDbType to a supporting OleDbType.

有关支持的数据类型的列表,请参阅相应 OleDbType 成员。For a list of the supported data types, see the appropriate OleDbType member. 有关详细信息,请参阅 DataAdapter 参数For more information, see DataAdapter Parameters.

适用于