リスト変数をAdd DataRowアクティビティで空のデータテーブルdt_inputに1行ずつ追加したい

[gorby (RPA Ninja)]

こんばんは
UiPath Studio 2025.0.172STS Community editionのユーザーです。

1.やりたいこと

リスト変数lis_Path List＜String＞を、Add DataRowアクティビティで空のデータテーブルdt_inputに1行ずつ追加したい。

2.悩んでいること

Add DataRowアクティビティで下記のエラーが出ます。どうしてでしょうか？

System.ArgumentException: Input array is longer than the number of columns in this table. at UiPath.Core.Activities.ForEachBase`1.OnExecutionFaulted(NativeActivityFaultContext faultContext, Exception propagatedException, ActivityInstance propagatedFrom)
at System.Activities.Runtime.FaultCallbackWrapper.FaultWorkItem.Execute(ActivityExecutor executor, BookmarkManager bookmarkManager)

[ashokkarale]

@gorby,

You can add only one row at a time with Add Data Row activity.

You can pass a DataRow type variable or Array like {“Your value”}

In your case do it like this.

[gorby (RPA Ninja)]

After I applied your advice, I found a static error, String() cannot be converted to DataRow.

How can I overcome this error?

[ashokkarale]

@gorby,

Make sure you are using the correct item name in the array.

[gorby (RPA Ninja)]

Hi, it seems there is no difference between two currenttexts.

[ashokkarale]

@gorby,

I’m unable to open your code so lets try this approach.

I assume your lis_Path is of datatype List<String>

1. Delete the current For Each activity with it’s inner activities.
2. Add the For Each activity
3. Pass lis_Path in In property
4. Add the Add data row activity again like this.

[gorby (RPA Ninja)]

After I tried what you said, no improvement was found.

[ashokkarale]

@gorby,

It’s working fine at my end. After typing just press enter or click somewhere else outside so that expression will get validated and error will ho away.

Working code:
List.zip (165.3 KB)

[gorby (RPA Ninja)]

@ashokkarale

After typing just press enter or click somewhere else outside so that expression will get validated and error will ho away.

I noted the real reason I got confused was that in the English and Japanese versions of UiPath, the order of the column array and the DataRow in AddDataRow activity was reversed.

Wouldn’t this be considered a UiPath bug?

Cheers to your Lord, Brahma

[ashokkarale]

@gorby

the order of the column array and the DataRow was reversed.

It could be possible the difference because of Studio versions we are using. I have an older version of the studio.