In order to simplify the creation of evaluating expressions for the XAF KPI we have implemented a new PropertyEditor - PopupExpressionPropertyEditor.
Let's demonstrate its features in the FeatureCenter demo.
To enable this editor for a property of your object, set PropertyEditorType for the Expression property of the KpiDefinition class via Model Editor.
Then close Model Editor, navigate to KPI –> Definition, and open the "Sales" object:
Click the ellipsis button on the right side of the "Expression" Property Editor control. It will invoke the Expression Editor form, where you can easily compose expressions of any complexity. In FeatureCenter, we use a simple expression - let's select "Aggregate operations" and choose the "Sum()" operator.
Then we select "Fields" and choose the "Freight" field.
After that we can see the Sum([Freight]) expression in the corresponding KpiDefinition property.
For now, we have PopupExpressionPropertyEditor for the Windows Forms applications only. And of course, its usage is not limited to KPI module. For instance, I saw several times that customers had calculated user-specified properties or formulas that could be modified by end-users at runtime. Expression Property Editor will come in very handy for such scenarios.
Happy XAFing
Need Faster Support Replies?
Once you create a new XAF ticket in the DevExpress Support Center and select XAF under the Platform/Product field, please review the following help links displayed above the Submit button. These links describe how you can collect callstacks, logs and other important diagnostic information for any .NET error. Once you collect/compile this information, forward it to us along with your support ticket. This information will ensure faster and more accurate replies from support.
