SchemaTableColumn.AllowDBNull Field
Definition
Important
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Specifies whether value DBNull is allowed.
public: static initonly System::String ^ AllowDBNull;public static readonly string AllowDBNull; staticval mutable AllowDBNull : stringPublic Shared ReadOnly AllowDBNull As String Field Value
Remarks
Returns the string "true" if DBNull is allowed; otherwise "false".
Note
Avoid setting AllowDbNull to "true" for primary key columns. A column defined as a primary key can be set to AllowDbNull, but a null value cannot be assigned to it.
Applies to
See also
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