# \#null-referrence-error

**URL:** https://forum.uipath.com/tag/null-referrence-error/2220.md

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## [How to check cell is empty](https://forum.uipath.com/t/how-to-check-cell-is-empty/784612)

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**Author:** [@Mathkar\_kunal](https://forum.uipath.com/u/Mathkar_kunal)\
**Replies:** 2\
**Last updated:** [December 9, 2024, 11:22am UTC](https://forum.uipath.com/t/how-to-check-cell-is-empty/784612 "2024-12-09T11:22:17Z")

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Hello, i need to check cells B1,C1,D1 are empty or not if empty then go to then else go to ele part after using below code , it is going to then only not else tried with string.isnullorempty as well help me on sa…

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## [Studio allows me to set a default "Nothing" value for non-nullable types, yet later it complains when I try to make use of it](https://forum.uipath.com/t/studio-allows-me-to-set-a-default-nothing-value-for-non-nullable-types-yet-later-it-complains-when-i-try-to-make-use-of-it/717675)

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**Author:** [@pere](https://forum.uipath.com/u/pere)\
**Replies:** 11\
**Last updated:** [May 8, 2024, 6:36am UTC](https://forum.uipath.com/t/studio-allows-me-to-set-a-default-nothing-value-for-non-nullable-types-yet-later-it-complains-when-i-try-to-make-use-of-it/717675 "2024-05-08T06:36:53Z")

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I’m not used to program in Visual Basic (yet I have some background). I’m declaring a couple of Int32 variables in the most outer scope of the project. I expected to use a change in these to control the flow of a state …

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## [Get Outlook Mail Message throwing error when Message Recall Success or Failure email is present in the Inbox](https://forum.uipath.com/t/get-outlook-mail-message-throwing-error-when-message-recall-success-or-failure-email-is-present-in-the-inbox/349901)

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**Author:** [@AnkitJain](https://forum.uipath.com/u/AnkitJain)\
**Replies:** 1\
**Last updated:** [October 1, 2021, 1:14pm UTC](https://forum.uipath.com/t/get-outlook-mail-message-throwing-error-when-message-recall-success-or-failure-email-is-present-in-the-inbox/349901 "2021-10-01T13:14:39Z")

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Hi Everyone I have create Get Outlook Message to get emails form my Inbox. It is picking all emails perfectly. But whenever a notification email that confirms whether sent message was recalled successfully or not, is pr…