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OleDbParameter.IsNullable Property

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Definition

Namespace:
System.Data.OleDb
Assembly:
System.Data.OleDb.dll
Assembly:
System.Data.dll
Package:
System.Data.OleDb v8.0.1
Package:
System.Data.OleDb v9.0.0-rc.2.24473.5
Source:
DbParameterHelper.cs
Source:
DbParameterHelper.cs
Source:
DbParameterHelper.cs
Source:
DbParameterHelper.cs
Source:
DbParameterHelper.cs

Gets or sets a value that indicates whether the parameter accepts null values.

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

Property Value

Boolean

true if null values are accepted; otherwise false. The default is false.

Attributes
BrowsableAttribute DataSysDescriptionAttribute

Examples

The following example creates an OleDbParameter and sets some of its properties.

Public Sub CreateOleDbParameter()  
    Dim parameter As New OleDbParameter("Description", OleDbType.VarChar, 88)  
    parameter.IsNullable = True  
    parameter.Direction = ParameterDirection.Output  
End Sub 'CreateOleDbParameter  

public void CreateOleDbParameter()   
 {  
    OleDbParameter parameter = new OleDbParameter("Description", OleDbType.VarChar, 88);  
    parameter.IsNullable = true;  
    parameter.Direction = ParameterDirection.Output;  
 }

Remarks

Null values are handled using the DBNull class.

Applies to

See also