ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Editing.Attributes Namespace / Attribute Class / IsNullable Property
Example

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    IsNullable Property (Attribute)
    In This Topic
    Gets whether this attribute value can be null.
    Syntax
    public bool IsNullable {get;}
    Public ReadOnly Property IsNullable As Boolean
    Example
    Get a layers schema using Inspector
    QueuedTask.Run(() =>
    {
      var firstFeatureLayer = MapView.Active.Map.GetLayersAsFlattenedList().OfType<ArcGIS.Desktop.Mapping.FeatureLayer>().FirstOrDefault();
    
      // create an instance of the inspector class
      var inspector = new ArcGIS.Desktop.Editing.Attributes.Inspector();
    
      // load the layer
      inspector.LoadSchema(firstFeatureLayer);
    
      // iterate through the attributes, looking at properties
      foreach (var attribute in inspector)
      {
        var fldName = attribute.FieldName;
        var fldAlias = attribute.FieldAlias;
        var fldType = attribute.FieldType;
        int idxFld = attribute.FieldIndex;
        var fld = attribute.GetField();
        var isNullable = attribute.IsNullable;
        var isEditable = attribute.IsEditable;
        var isVisible = attribute.IsVisible;
        var isSystemField = attribute.IsSystemField;
        var isGeometryField = attribute.IsGeometryField;
      }
    });
    Requirements

    Target Platforms: Windows 11, Windows 10, Windows 8.1

    See Also