Power Apps If Statement

The If function in Power Apps (Power Fx) is a conditional function used to make decisions based on whether a given condition evaluates to true or false.

Similar to traditional programming languages, it allows you to perform different actions depending on the outcome of the condition.

Basic Syntax

If(condition, result_if_true, result_if_false)

You can also nest If functions to evaluate multiple conditions.

Example Use Cases

1. Checking If Two Names Are the Same

Compare the text values from two input fields:

If(txtNamePersonA.Text = txtNamePersonB.Text, "Yes", "No")

2. Checking If One Person Is Older Than Another

Use the Value() function to convert text input to numbers before comparing:

If(
  Value(txtAgePersonA.Text) > Value(txtAgePersonB.Text),
  "Yes",
  "No"
)

3. Checking If Both Name and Age Are the Same

Combine conditions using the And operator:

If(
  txtNamePersonA.Text = txtNamePersonB.Text &&
  Value(txtAgePersonA.Text) = Value(txtAgePersonB.Text),
  "Yes",
  "No"
)

4. Checking If Either Name or Age Matches

Use the Or operator instead:

If(
  txtNamePersonA.Text = txtNamePersonB.Text ||
  Value(txtAgePersonA.Text) = Value(txtAgePersonB.Text),
  "Yes",
  "No"
)

5. Alternative Syntax with Nested Ifs

This structure evaluates one condition first, and only if it’s false, moves to the next:

If(
  txtNamePersonA.Text = txtNamePersonB.Text,
  "Yes",
  If(
    Value(txtAgePersonA.Text) = Value(txtAgePersonB.Text),
    "Yes",
    "No"
  )
)

Using If with UI Properties

6. Changing Rectangle Color Based on a Slider

Use the Fill property of a rectangle to change its color dynamically:

If(
  Slider1.Value > 50,
  Color.Red,
  Color.LightBlue
)

Using If for Navigation

7. Navigate to Screens Based on Age

Use Navigate() within an If() to direct users based on age:

If(
  Value(txtAgePersonA.Text) > 70,
  Navigate(GrandpaScreen),
  If(
    Value(txtAgePersonA.Text) > 17,
    Navigate(AdultScreen),
    Navigate(KidsScreen)
  )
)

This function checks the user’s age and navigates to different screens accordingly.

Key Takeaways

• The If function is a powerful tool in Power Apps for decision-making.
• It can be used not only for showing/hiding text, but also for styling, logic, and navigation.
• When comparing numeric values from text fields, always use the Value() function.
• You can use And, Or, and nested If() functions for more complex conditions.

Conclusion

Mastering the If function allows you to make your Power Apps dynamic and interactive. Whether you’re validating data, controlling visibility, changing UI elements, or navigating between screens, the If function is at the core of decision-making in Power Apps.