Parameter.AllowNull Property
Indicates whether the parameter‘s value can be unspecified.
Namespace: DevExpress.XtraReports.Parameters
Assembly: DevExpress.Printing.v18.2.Core.dll
Declaration
[XtraSerializableProperty]
[DefaultValue(false)]
[TypeConverter(typeof(BooleanTypeConverter))]
public bool AllowNull { get; set; }
Property Value
Type | Default | Description |
---|---|---|
Boolean | **false** | true, to allow the parameter to be unspecified; otherwise, false. |
Remarks
If this property is set to true, end users can leave the parameter editor empty on the Parameters panel.
You can provide specific report data when the parameter is set to null.
See Also