Difference between AsDataview and defaultView

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1

Hi,

Can someone explain what is the difference between these two methods and when to use which one
Both the outputs will be same right?

inputDT.AsDataView.ToTable(“True”,“Column Name”)
inputDT.DefaultView.ToTable(“True”,“Column Name”)

2

@Deeksha,

In UiPath, both AsDataView and DefaultView methods are used to convert a DataTable into a DataView. However, there are subtle differences between the two:

  1. AsDataView Method:
  • The AsDataView method is used to explicitly convert a DataTable into a DataView.
  • It returns a new DataView object based on the DataTable.
  • It doesn’t modify the original DataTable; it just creates a view of the data.
  • This method is preferable when you want to maintain the original DataTable intact and just need to work with a DataView for temporary operations.
  1. DefaultView Property:
  • The DefaultView property also returns a DataView, but it’s a property of the DataTable itself.
  • It returns the default DataView for the DataTable.
  • The default view might have sorting, filtering, and other settings applied if they have been set on the DataTable previously.
  • If you use DefaultView, any changes made to the DataView (like filtering or sorting) will reflect on the original DataTable.
  • This property is convenient when you want to work directly with the default view of the DataTable and intend to apply changes back to the original DataTable.

Regarding your specific question, both methods will produce similar outputs in terms of the structure of the DataView. However, there might be differences if any sorting, filtering, or other properties are set on the default view of the DataTable using DataTable.DefaultView. If you want to ensure that you’re working with a clean DataView without any previous settings, using AsDataView would be preferable. If you want to maintain any settings applied to the default view, then using DefaultView would be appropriate.

LLM helped me to write this answer.

Ashok :slight_smile:

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3

Hi @Deeksha

AsDataView.ToTable: This method converts the DataTable into a DataView first and then applies the filtering or sorting conditions specified in the arguments ("True" for filtering and "Column Name" for the filter criteria). It creates a new DataTable based on the filtered DataView.

DefaultView.ToTable: This method directly operates on the default view of the DataTable. It also applies filtering or sorting conditions specified in the arguments ("True" for filtering and "Column Name" for the filter criteria) but without explicitly creating a DataView.

Cheers!!