Master Day Function in Power Fx for Power Apps
Power Apps
Dec 11, 2023 3:30 PM

Master Day Function in Power Fx for Power Apps

by HubSite 365 about Joe Unwin [MVP] (FlowJoe)

Power Platform Lead @ Hitachi | FTRSA, MVP & MCT

Citizen DeveloperPower AppsLearning Selection

Master Power Apps: Easily Calculate Week Day Dates with Power Fx Functions!

Learn about the Day function in Power Fx, which lets you pull the day from date and time values for data manipulation within Power Apps. This versatility is showcased using Copilot Studio, but it's a feature consistent across all Power Fx implementations.

The tutorial covers the process of obtaining the day of the week in Power Apps, focusing on how to identify the date of Saturdays within the current week. It introduces the Power Apps Weekday function and explains how to use it effectively.

Discover the week starts and Weekday function in Power Apps. This function gives a numerical representation of the days in the week, customizable to which day a week should start, by default or specification.

Explore the Weekday function syntax, which takes a DateTime input and the optional StartOfWeek parameter and learn through practical examples how the function performs when retrieving the day number for 'today'.

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Understanding WeekDay and DateAdd Functions

In Power Apps, the Weekday function determines the day number of a date based on the week's start day. When combined with the DateAdd function, it enables the user to calculate dates for any day of the current week. Specific examples provided clarify how to apply these functions in real-world scenarios.

  • The Weekday function is key for identifying days numerically.
  • It considers the week's starting day, which defaults to Sunday.
  • The DateAdd function adds or subtracts days to arrive at a specified date.

Practical Examples of WeekDay and DateAdd Usage

Through practical examples, the viewer learns how to calculate the current week's dates, such as finding the date of the current week's Sunday when Sunday is the start of the week. This process involves using the Today function and adjusting for the weekday number.

  • Example applications showcase calculations from the current date to determine dates for days like Sunday or Monday.
  • The Weekday function can also set the week's start to Monday, changing the numerical representation of each weekday.
  • The DateAdd function adjusts the current date to reflect the desired day's date by adding or subtracting the needed number of days.

The detailed explanation of Power Apps' WeekDay and DateAdd functions demonstrates their utility in calculating the current weekday's date. Utilizing these functions allows dynamic retrieval of relevant dates within Power Apps environments. Transform Power Apps with additional functions like text formatting, alternate row coloring in galleries, substring checking, nested if statements, and environment variables usage.

Power Apps Date Functions

By mastering the usage of WeekDay and DateAdd functions in Power Apps, users gain the ability to efficiently manage and manipulate dates within their applications. This capability is crucial for creating dynamic, responsive, and date-sensitive app features, such as scheduling tasks, events, or notifications based on specific days of the week within Power Apps.

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Power Apps - Master Day Function in Power Fx for Power Apps



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