Navigation with variable

[rob4681]

Hello All,

I need to navigate to the next screen based on different text merged together as shown below.

Set(ProdDir, LookUp(BatchTrack, 'Batch ID'= BatchID1.Text && 'Wafer ID'= WaferID1.Text, Product.Value));

Set(ProdStep, Switch(ProdDir,
                "Prod1",
                LookUp(Prod1, OpCode01 = Value(OpCode1.Text), Step),
                "Prod2",
                LookUp(Prod2, OpCode01 = Value(OpCode1.Text), Step),
                "Trial",
                LookUp(Trial, OpCode01 = Value(OpCode1.Text), Step)
                ));

Set(ProdStage, Switch(ProdDir,
                "Prod1",
                LookUp(Prod1, OpCode01 = Value(OpCode1.Text), Stage),
                "Prod2",
                LookUp(Prod2, OpCode01 = Value(OpCode1.Text), Stage),
                "Trial",
                LookUp(Trial, OpCode01 = Value(OpCode1.Text), Stage)
                ));
Set(Direct, ProdStep & ProdStage);

Navigate(Direct) 

I was expecting having a variable in the navigate function wouldn't be an issue, but it doesn't compile.

Any ideas? 

Thank you in advance.

Rob

[PowerStudent]

Hi,

The Navigate function in Power Apps does not accept a string variable representing the screen name directly. Instead, it expects a reference to the screen object. You'll need to convert the string variable into a screen reference, which can be done using a Switch function or an equivalent logic structure that maps string values to actual screen objects.

Here's an example of how you might adjust your code:

Set(ProdDir, LookUp(BatchTrack, 'Batch ID' = BatchID1.Text && 'Wafer ID' = WaferID1.Text, Product.Value));

Set(ProdStep, Switch(ProdDir,
                "Prod1",
                LookUp(Prod1, OpCode01 = Value(OpCode1.Text), Step),
                "Prod2",
                LookUp(Prod2, OpCode01 = Value(OpCode1.Text), Step),
                "Trial",
                LookUp(Trial, OpCode01 = Value(OpCode1.Text), Step)
                ));

Set(ProdStage, Switch(ProdDir,
                "Prod1",
                LookUp(Prod1, OpCode01 = Value(OpCode1.Text), Stage),
                "Prod2",
                LookUp(Prod2, OpCode01 = Value(OpCode1.Text), Stage),
                "Trial",
                LookUp(Trial, OpCode01 = Value(OpCode1.Text), Stage)
                ));

// Create a variable that will hold the screen object
Set(Direct, Switch(ProdStep & ProdStage,
                "Prod1Stage1", ScreenProd1Stage1, // Replace with the actual screen object
                "Prod2Stage2", ScreenProd2Stage2, // Replace with the actual screen object
                "TrialStage3", ScreenTrialStage3  // Replace with the actual screen object
                // Add additional cases as necessary
));

// Use the screen object variable in the Navigate function
Navigate(Direct, ScreenTransition.None) // Choose your desired transition

Replace ScreenProd1Stage1, ScreenProd2Stage2, ScreenTrialStage3, etc., with the actual screen object references in your app.

By using the Switch function to directly set the Direct variable to the appropriate screen object based on the concatenated string of ProdStep & ProdStage, you can then use this variable with the Navigate function. Remember to maintain consistent naming conventions between the values in ProdStep & ProdStage and the names of your screen objects.

For more detailed support, book a consultation call with me here:
Consultation: https://softwarezone365.com/contact-us
PowerApps Blogs: https://softwarezone365.com/power-apps

Should you appreciate my assistance and wish to support my work, you might consider:
Giving this post a Thumbs Up.
If applicable, marking it as the Solution.

Support my work:
PayPal: https://www.paypal.com/donate/?hosted_button_id=DASYHQAEETD2J

Contact directly:
Email: Contact@SoftwareZone365.com
WhatsApp: https://wa.me/+923087478066

Best regards,
Ahmad Raza

[rob4681]

the issue I have is that there will be 100 different screens in my app eventually. Is there no other way around listing them all out?