Hello @Toumtam Phiphack ,

• If 

Simple True/False check. Used in UI screens to show/hide stuff and also in server/client actions. Can also be used in expressions.

Use if when you just need a yes/no decision like validating a form.

• Switch 

Used when there are multiple options. Works in server/client actions, not in UI. You can use switch when you have many possible cases.

Example: Run different logic based on status (Completed, In-Progress, etc.).

In OutSystems, "if" is a basic conditional statement that executes a block of code only if a specified condition is true, while "switch" is a more complex conditional tool that allows you to choose one block of code to execute based on the value of a variable, essentially acting like a series of "if-else if" checks for different possible values. 

Also One Switch is used for toggle between true/false.

Hi @Toumtam Phiphack ,

 If Condition

• The If condition is used when you need to evaluate a single condition and take one of two possible paths (True or False).
• It is typically used inside screens, widgets, or expressions to show or hide UI elements.

Switch Condition

• The Switch condition is used when you have multiple possible values and need to execute different paths based on the value.
• It is mainly used in logic flows where multiple conditions determine different actions.

Thanks,

sivasakthi

Hi @Toumtam Phiphack ,

The "If" widget is used to conditionally display content based on a boolean expression or condition being true or false.

The "Switch" widget works like a multi-conditional statement allowing different content to be displayed based on the value of a given expression. 

And also please refer this document
https://success.outsystems.com/documentation/11/reference/outsystems_language/logic/implementing_logic/logic_tools/switch/
https://success.outsystems.com/documentation/11/reference/outsystems_language/logic/implementing_logic/logic_tools/if/

Thanks,
Sahana

Hi Toumtam,

Please refer this Documentation Switch and take look on demo switch statement video Video link

In OutSystems, the primary difference between a "switch" and an "if" statement is that a "switch" allows you to check a single variable against multiple possible values, while an "if" statement only checks a single condition against a Boolean value, making "switch" more efficient when dealing with multiple distinct options for a single variable. 

If you have lots of values to check switch is better and cleaner way.

It is a basic question, that when searched in the OutSystems documentation, internet, or even asked to ChatGPT is answered correctly within a second. Yet we have 7 people doing the search for you.

No one can complain that the OutSystems community is not active ;)

Hi @Toumtam Phiphack ,

In IF it evaluates a single condition and executes one of two branches like (True/False). 

In Switch it  Selects one case from multiple possible conditions. 

For simple example based on outsytem

In IF condition, i want to show the username based on userid in expression widget,if the userid is not created it will show Create user .For this we can enclose the container in if,in condition we can give Userid=nullidentifier .in true branch we can give the create User , in Flase we can show the user Id.

In swich condition,

I want to show the Daytype of the week means,we can user the Dayofweek() builtinfunction it returns the day in number 1 for Sunday, 2 for Monday, etc .

In  Switch Widget,

Case 1: If DayOfWeek = 1, in text Weekend (Sunday)

Case 2: If DayOfWeek = 7, in text Weekend (Saturday)

otherwise   it shows the Weekday

the output we can show like

If today is Monday means Weekday. If today is Saturday means Weekend.

Thanks,

Sudha Narayanan

Hi Toumtam,

If you've read all the answers you're up to speed with the differences. However, one thing to understand is that the OutSystems Switch is not, like it is in many other languages, a selection of multiple values of a single variable. Basically there's no difference between a Switch with three conditions and three Ifs with these conditions below each other. So it's up to your personal preference when to use a Switch instead of multiple Ifs.