I am trying to apply condition at 2-3 instances (in outlook and DB row). Unfortunately, following alternatives are not working for me:
If row/ mail/ mail.attachment etc. isnot nothing (it returns negative result each time whether there is an attachment in mail or not or similar cases)
If mail is nothing ((it returns positive result each time whether there is an attachment in mail or not or similar cases). Basically, opposite scenario of point 1
Isdbnull to assess if row is blank in one of the excel rows (always return positive result)
Not dbrows.Any() to assess if row is blank in one of the excel rows (always return positive result)
IsNothing(item) is also not a right approach here.
I am getting my feet wet in vb.net coding so a guidance to apply condition in the following situations would be helpful:
For datatable rows have you tried String.IsNullOrEmpty() - youād have to convert your row to string first but that shouldnāt be a problem in most cases.
For the outlook problem Iām a little confused either you have a mail message or you donāt so when you are obtaining a list of mail messages you should know how many you have e.g. your mailMessages array will have 10 items. Therefore you know to check 10 messages and after that you will know that it is going to be nothing. Alternatively you would just loop through each message in mailMessages which would automatically end once you run out of messages.
I have referred String.IsNullOrEmpty() for data row items (specific column value within a row etc.) but not sure about its feasibility for each row in data table as there could be multiple blank rows within data table
Actually, the code keeps running after specific time. It should identify if there is an unread/new mail and start the process.
Also, I am looking for mail attachments as requested above.
I am using this technique to remove rows from a data table. I want to remove rows where a particular field is empty. The row removal technique includes a ālistā variable which covers the strings to use to remove a row. How can I define a string of null values? (I tried string.IsNullOrEmpty() as the value for list but I get a compiler error)
Could you post your xaml file? String.IsNullOrEmpty should work fine although it would need to go into an If statement.
An alternative approach would be to move all rows where the field is not empty into a new datatable using an Assign activity. For example newDataTable = oldDataTable.Select("yourRow<>āā ") iā¦e select everything that is not blank into the new data table.
Sorry, Iām not sure that you can directly create a datatable from another datatable. The solution I have used in the attached workflow creates a view initially and then converts it back to a datatable. The following example may help if itās not 100%. I wasnāt sure whether your final table should be dt2 or dt3 but you can amend accordingly.
Hi Richard!
If i have a Data Table variable, how can check if the row is empity?
I think String.IsNullOrEmpty donāt work because i havenāt a string variable but i cannot convert it.
I am a similar problem but non of suggestions above seem to work.
In my excel, several options for the row are possible, and one of them is also empty row. Which always gives us back this, whatever the condition is:
The only thing we expect is, that uipath wonāt do anything about any empty value - so in If itās āthenā will be empty.
