We want to create our own foreach activity or only pass datatable name

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C#

WPF

WWF

workflow

we are using inbuilt system foreachworkflow activity in below image.

but our requirement to not use AsEnumerable after datatable name only we need to pass datatable name but it is expecting AsEnumerable it is system activity how can we modify or how can we create this foreach loop activity in work flow.

if it will modify this is also fine otherwise need to go with create custom loop activity similar this.

What I have tried:

we tried but unable to modify the system activity and also not find to create own activity