IndicatorDiagramElement. Support nullable property types.

mikasoukhov · mikasoukhov · commit c4298a3f53fa · 2025-10-06T23:20:23.000+03:00
diff --git a/Diagram.Core/Elements/IndicatorDiagramElement.cs b/Diagram.Core/Elements/IndicatorDiagramElement.cs
@@ -230,7 +230,14 @@ IDiagramElementParam createParam(Type propType)
 				propType == typeof(DateTimeOffset) ||
 				propType.IsEnum)
 			{
-				parameters.Add(createParam(propType));
+				// keep property type as nullable if it is
+				var param = createParam(propertyInfo.PropertyType);
+
+				// copy all restrictions
+				param.Attributes.AddRange(propertyInfo.Attributes.OfType<ValidationAttribute>());
+				param.Attributes.AddRange(propertyInfo.Attributes.OfType<ItemsSourceAttribute>());
+
+				parameters.Add(param);
 			}
 			else if (propType.Is<IIndicator>())
 			{

Original file line number	Diff line number	Diff line change
`@@ -230,7 +230,14 @@ IDiagramElementParam createParam(Type propType)`
`230`	`230`	`propType == typeof(DateTimeOffset) \|\|`
`231`	`231`	`propType.IsEnum)`
`232`	`232`	`{`
`233`		`- parameters.Add(createParam(propType));`
	`233`	`+ // keep property type as nullable if it is`
	`234`	`+ var param = createParam(propertyInfo.PropertyType);`
	`235`	`+`
	`236`	`+ // copy all restrictions`
	`237`	`+ param.Attributes.AddRange(propertyInfo.Attributes.OfType<ValidationAttribute>());`
	`238`	`+ param.Attributes.AddRange(propertyInfo.Attributes.OfType<ItemsSourceAttribute>());`
	`239`	`+`
	`240`	`+ parameters.Add(param);`
`234`	`241`	`}`
`235`	`242`	`else if (propType.Is<IIndicator>())`
`236`	`243`	`{`