🚑 🆘 [FirstAid] For Each Activity - Forcing TypeArgument

[ppr (Peter Preuss)]

This FirstAid Tutorial will describe how the auto calculated typeargument of a for each activity can be forced

Introduction

In newer versions, the TypeArgument of the For each activity is automatically derived and is no longer offered for manual configuration

Depending on different combinations of

• UiPath Studio version
• Selected project compatibility (Legacy, Windows…)
• UiPath.System.Activities version
• Use of variable vs. code statement

the following behavior can occur:

• The TypeArgument is assumed to be of the data type of Object / non-Expected data type
• BUT should be a different data type.

Check

The derived and used Datatype can be checked on the property panel:

Correction

When rewriting the part where the List of items is passed, the involved datatype can be forced

Text related

Regex	MatchCollection
Before	Regex.Matches(strText, strPattern)
Targeted DataType	Match
After	Regex.Matches(strText, strPattern).Cast(of Match)
Comment

JSON related

JObject	Property Value
Before	myJobject(“data”)
Targeted DataType	Newtonsoft.Linq.JObject
After	myJobject(“data”).Values(Of JObject)
Comment	“data” property value will be returned as a series of JObject

Datatable / DataTableSet related

DataSet	DataTable
Before	myDataSet.Tables
Targeted DataType	System.Data.DataTable
After	myDataSet.Tables.Cast(Of DataTable)
Comment

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