Displaying the value of an entity field in a label

To display values of fields from an entity within labels or other display controls in your app using VB expressions, follow these steps:

Go to the app where you want to add this feature.
Click Add any from the dropdown arrow next to Add control. Select Entity.

Note: If you already have an entity added to your app, you can skip this step.
Create a new AppVariable and assign the entity to it.
- For holding a list of entity records, add an app variable of the type ListSource, then select your entity using the dropdown menu.
- For retrieving a single entity record, add an app variable of the type <Entity>, where <Entity> is the name of your entity.
In the MainPage, go to the Events section in the property panel. Add a Loaded rule.
Add a Set Value rule.
In the Item To Set field, select your AppVariable using the lookup panel.
In the Value field, use the query builder to construct your query.

Note:
You can find more information on how to construct a query in the Query builder page.

If you are assigning a value to an AppVariable of the type <Entity>, use the query builder to generate the expression. Replace any Fetch function with FetchOne instead.
Add a Label control.
In the Text field, add the following expression:
- If the variable you created was of the type <Entity>, holding a single entity record, use variableName.ColumnName.
- For a variable holding multiple entity records, use variableName.data(<Index>).ColumnName, where variableName is the name of your variable from which you want to retrieve data.

The app displays the value of an entity field at runtime.

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