Passing Parameters to a Static Processing Delegate in Acumatica

The user interface into a static processing delegate. This is particularly relevant when building a processing screen that needs to use additional parameters—like date ranges, item IDs, or custom flags—entered by the user at the top of the screen.

Since Acumatica’s SetProcessDelegate method expects a static method, there’s a limitation: static methods cannot directly access instance-level data such as values from filter fields. However, with a clean approach using closures in C#, it’s entirely possible to pass those values in a way that’s both safe and efficient.

The Scenario

Let’s say you’re building a screen that allows users to bulk update inventory items. The user selects a range—“From Item” and “To Item”—and clicks a Process button. Each selected item needs to be updated using the values provided in the filter section.

You want to:

• Capture the “From Item” and “To Item” entered by the user
• Pass those values into your processing logic
• Keep the processing logic clean and static as required

Here’s how to do it.

The Solution

The key is to extract the parameters from the filter row and pass them into your static delegate using a lambda expression. This lambda captures the current parameter values and injects them into the static method when processing begins.

Code Example

Why This Works

This technique uses a closure—a C# language feature that lets you "capture" variables from the surrounding context and pass them into a delegate. In this case, the values from the filter (fromItem and toItem) are captured when SetProcessDelegate is called. They’re then passed to a separate static method (ProcessItems) that performs the actual processing logic.

The benefits of this approach include:

• Separation of concerns: The UI layer remains clean, while the processing logic is self-contained.
• Flexibility: You can pass any number of parameters this way—flags, dates, strings, even complex objects.
• Compliance with Acumatica requirements: Your delegate remains static, satisfying the framework’s needs.

Final Thoughts

Passing values to a static delegate might feel limiting at first, but with closures and a bit of design forethought, it's not only doable but elegant. This pattern is reliable for any processing screen that requires user-entered parameters and will save time and confusion during development. Whether you’re working with sales orders, inventory, or custom DACs, this method applies cleanly across the board.