SqlParameter.IsNullable Property

Definition

Namespace:

Microsoft.Data.SqlClient

Assembly:

Microsoft.Data.SqlClient.dll

Package:

Microsoft.Data.SqlClient v5.2.0

Gets or sets a value that indicates whether the parameter accepts null values. IsNullable is not used to validate the parameter's value and will not prevent sending or receiving a null value when executing a command.

public:
 virtual property bool IsNullable { bool get(); void set(bool value); };

public override bool IsNullable { get; set; }

member this.IsNullable : bool with get, set

Public Overrides Property IsNullable As Boolean

Property Value

Boolean

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

Examples

The following example creates a SqlParameter and sets some of its properties.

// using Microsoft.Data.SqlClient;
static void CreateSqlParameterNullable()
{
    SqlParameter parameter = new SqlParameter("Description", SqlDbType.VarChar, 88);
    parameter.IsNullable = true;
    parameter.Direction = ParameterDirection.Output;
}

Remarks

Null values are handled using the DBNull class.