The Self function in PowerApps is a reference to the current control within its own properties. This can be particularly useful when you need to refer to the properties of a control within the same control, such as adjusting its appearance or behavior based on its own state.
PowerApps – Self() function Syntax
- PropertyName: The property of the current control that you want to reference.
Notes:
- Nested Controls: The Self function refers to the current control's context, so it might not work as expected if used in nested controls without careful handling.
PowerApps - Change color of control Based on its value
Suppose you have a slider control, and you want the fill color of the slider to change based on its value. You can use the Self function in the Fill property of the slider:
If(Self.Value > 50, Color.Red, Color.Green)
This changes the slider's fill color to red if the value is greater than 50, otherwise, it changes to green.
PowerApps – Apply dynamic tooltip based on control text
You can set a dynamic tooltip for a button based on its text content using the Self function. In the Tooltip property of the button:
"Click to submit: " & Self.Text
This sets the tooltip to display "Click to submit: " followed by the button's text.
To create a hover effect where the button changes its color when the user hovers over it, you can use Self in the HoverFill property:
If(Self.Hover, Color.LightBlue, Color.Blue)
This changes the button color to light blue when hovered, otherwise, it remains blue.
PowerApps – implement Adaptive Label Width
Suppose you have a label and you want its width to adapt based on its text length. You can use Self in the Width property of the label:
TextWidth(Self.Text) + 20
This sets the width of the label to be slightly larger than the width of its text content.
PowerApps – Dynamic Progress Bar
If you have a progress bar represented by a rectangle and you want its width to adjust based on a percentage value, you can set the Width property of the rectangle using Self:
Parent.Width * (Self.Value / 100)
This sets the width of the progress bar proportionally based on its value.
PowerApps – implement dynamic hint text of control
Suppose you have a text input control where users can type their names, and you want the text input box to display a placeholder text when it is empty. You can use the Self function in the HintText property of the text input control:
- Add a Text Input Control
Add a text input control and set its HintText property to:
If(IsBlank(Self.Text), "Enter your name", Self.Text)
This sets the hint text to "Enter your name" when the input is empty.