🔹 If & Switch Functions in Power Apps – Complete Guide

📌 Introduction

Power Apps provides two powerful decision-making functions:

If() → Used for evaluating multiple conditions and returning different results.
Switch() → Used when multiple conditions need to be evaluated against a single variable.

✅ Why Use If & Switch Functions?

🎯 Implement conditional logic in your app.
⚡ Control visibility, colors, data filtering, and actions dynamically.
🚀 Improve user experience by making the app smart and responsive.

🔹 Step 1: Using the If Function

✅ Syntax of If()

If(Condition1, Result1, Condition2, Result2, DefaultResult)

The function evaluates conditions from left to right.
As soon as a condition is true, it returns the corresponding result and stops checking further.

Example 1: Change Label Color Based on Value

1️⃣ Insert a Label (Label1)
2️⃣ Set its Color property:

If(Value(TextInput1.Text) > 100, Red, Black)

📌 Now, if the entered number is greater than 100, the text turns red; otherwise, it remains black.

Example 2: Show/Hide a Button Based on User Role

1️⃣ Insert a Button (Button1)
2️⃣ Set its Visible property:

If(User().Email = "admin@company.com", true, false)

📌 Now, only the admin can see the button!

Example 3: Enable a Button Only When All Fields Are Filled

1️⃣ Insert a Button (SubmitButton)
2️⃣ Set its DisplayMode property:

If(
   IsBlank(TextInput1.Text) || IsBlank(Dropdown1.Selected.Value),
   DisplayMode.Disabled,
   DisplayMode.Edit
)

📌 Now, the button is disabled until all fields are filled!

🔹 Step 2: Using the Switch Function

✅ Syntax of Switch()

Switch(Expression, Match1, Result1, Match2, Result2, DefaultResult)

The function evaluates a single variable against multiple values.
It works faster than If() when comparing many values.

Example 1: Change Button Color Based on Status

1️⃣ Insert a Button (Button1)
2️⃣ Set its Fill property:

Switch(
    ThisItem.Status,
    "Approved", Green,
    "Pending", Orange,
    "Rejected", Red,
    Blue // Default color
)

📌 Now, the button’s color changes dynamically based on the status!

Example 2: Display Different Messages Based on User Selection

1️⃣ Insert a Dropdown (Dropdown1)
2️⃣ Set its Items property:

["Low", "Medium", "High"]

3️⃣ Insert a Label (Label1)
4️⃣ Set its Text property:

Switch(
    Dropdown1.Selected.Value,
    "Low", "Risk Level: Low. No action needed.",
    "Medium", "Risk Level: Medium. Monitor closely.",
    "High", "Risk Level: High. Immediate action required.",
    "Unknown" // Default message
)

📌 Now, the label dynamically updates based on the selected risk level!

🔹 Step 3: When to Use If vs. Switch?

Scenario	Use If()	Use Switch()
Checking multiple unrelated conditions	✅ Yes	❌ No
Evaluating one variable against multiple values	❌ No	✅ Yes
Performance & readability	❌ Becomes slow if too many conditions	✅ Faster for multiple comparisons

📌 Rule of Thumb:

Use If() when checking multiple unrelated conditions.
Use Switch() when evaluating one variable against different values.

🔹 Step 4: Best Practices for If & Switch Functions

✅ Keep If() conditions simple → Too many conditions slow down performance.

✅ Use Switch() for better performance when checking a single variable.

✅ Nest If() carefully → Avoid deep nesting to improve readability.

✅ Test your logic by using Labels to debug values dynamically.

✅ Use Global Variables to store values and reuse them efficiently:

Set(CurrentUserRole, "Admin")
If(CurrentUserRole = "Admin", true, false)

🔹 Conclusion

The If() and Switch() functions are essential for building dynamic and responsive Power Apps.

💡 Key Takeaways:
✅ If() is best for checking multiple unrelated conditions.
✅ Switch() is best for comparing a single variable to multiple values.
✅ Performance matters → Avoid unnecessary conditions.
✅ Test and debug using labels to track values.

Now, you’re ready to implement logic efficiently in your Power Apps!