Binding.DataSourceNullValue Property    
Definition
Important
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Gets or sets the value to be stored in the data source if the control value is null or empty.
public:
 property System::Object ^ DataSourceNullValue { System::Object ^ get(); void set(System::Object ^ value); };public object DataSourceNullValue { get; set; }public object? DataSourceNullValue { get; set; }member this.DataSourceNullValue : obj with get, setPublic Property DataSourceNullValue As ObjectProperty Value
The Object to be stored in the data source when the control property is empty or null. The default is DBNull for value types and null for non-value types.
Remarks
You can use the NullValue property to specify the value displayed in a bound control when the data source contains DBNull.