OleDbParameter.IsNullable Property

Reference

Definition

Namespace:: System.Data.OleDb

Assembly:: System.Data.OleDb.dll

Assembly:: System.Data.dll

Package:: System.Data.OleDb v10.0.0-preview.1.25080.5

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

Product	Versions
.NET	8 (package-provided), 9 (package-provided), 10 (package-provided)
.NET Framework	1.1, 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 (package-provided)

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