DbColumn.AllowDBNull Property
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Gets a nullable boolean value that indicates whether DBNull values are allowed in this column, or returns null if no value is set. Can be set to either true or false indicating whether DBNull values are allowed in this column, or null (Nothing in Visual Basic) when overridden in a derived class.
public: property Nullable<bool> AllowDBNull { public:
Nullable<bool> get(); protected:
void set(Nullable<bool> value); };public bool? AllowDBNull { get; protected set; }member this.AllowDBNull : Nullable<bool> with get, setPublic Property AllowDBNull As Nullable(Of Boolean)Returns true if DBNull values are allowed in this column; otherwise, false. If no value is set, returns a null reference (Nothing in Visual Basic).
| Tuote | Versiot |
|---|---|
| .NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10 |
| .NET Framework | 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0, 2.1 |
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