OleDbParameter.IsNullable Property

Reference

Definition

Namespace:: System.Data.OleDb

Assembly:: System.Data.OleDb.dll

Assembly:: System.Data.dll

Package:: System.Data.OleDb v9.0.0

Source:: DbParameterHelper.cs

Source:: DbParameterHelper.cs

Source:: DbParameterHelper.cs

Important

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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

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