How to use Linq?

I want to read excel If column Order Type = #N/A
write text = New register In Column N
and copy data from Col B → write in column H

I think if use linq , It fastest than for each row.

Please guide me about it.


There are two operations involved → writing New Register text and and copying column value
Both the task are to be done only when Order Type = #NA ?

Can you share the sample excel file.

You can try the following method



The Code used is

dt.AsEnumerable.Where(Function (x) x("Order Type").ToString.Equals("#NA")).ToList().ForEach(
	row(13)="New Register"
End Sub)

Finally you can write the data table (inputDT) to the excel file using the Write Range Activity

For your reference

Change Cell Value.xaml (5.0 KB)

1 Like

@kumar.varun2 I use follow you suggest.
But after run rows #N/A is blank (column H and I)

Find attached about input as below:
data.xlsx (45.3 KB)

Please guide me for solve it.

Hi @Maria99

Try with the code below

dt.AsEnumerable.Where(Function (x) String.IsNullOrEmpty(x("Order Type").ToString.Trim)).ToList().ForEach(
	row("Order Type")="New Register"
	row("Order Date")=row("Activation Date").ToString
End Sub)


Change Cell Value.xaml (5.4 KB)

1 Like

@kumar.varun2 I have more questions.

If In Pretty Flag not = N
I want to write text “Y” in column Result (column L) and write text “not approve” in Column Recheck (column M)
File input as below: data2.xlsx (41.9 KB)

Please guide me about it.


is this different from the above or you want to add both the conditions together.

@kumar.varun2 It step2 after above case.


Simply add this code below the previous code

dt.AsEnumerable.Where(Function (x) Not x("Pretty Flag").ToString.Trim.Equals("N")).ToList().ForEach(
	row("Recheck")="Not Approve"
End Sub)

Like this

1 Like

@kumar.varun2 Last question.

If column Pretty Flag = N and in column Order Type not = New Registration or column Order Type = Change Charge Type —> write row(Recheck)=“Waiting”

Find attached about input as below:data3.xlsx (43.6 KB)

dt.AsEnumerable.Where(Function (x) (x("Pretty Flag").ToString.Trim.Equals("N") And (Not x("Order Type").Equals("New Registration") Or x("Order Type").Equals("Change Charge Type")))).ToList().ForEach(
End Sub)
1 Like

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