How To Build & Configure A Custom Data Type

Last published at: June 27th, 2023

What is a custom data type?

Custom data type is a data type used on a step property to render a specific field or set of fields.  A data type might represent a simple text box  field for input, or a more complex popup UI for user selection.

 Let's look at the configuration of the “Decision” step:

FlowWright decision step

Configuration of the “Decision” step looks as follows:

Decision step configuration

In reference to the above diagram, the “Decision” step has 1 property called “condition” that is “string” data type.  When the step is rendered within the process designer, the “condition” property is rendered as a textbox.

Decision step rendered within the process designer

Custom data types

Custom data types can be configured using the data type screen of the FlowWright Configuration Manager.

When the “string” data type is rendered, it looks as follows:

Writing a custom data type

Custom data type can be written easily by implementing the “IFWDataType” interface.  The following code shows the actual code for the “string” data type.

Here's an example video of how to build a custom data type:

Here's the code that was used in the custom data type:

using FlowWright.Engine;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace FW10CustomItems
    public class FWTextBox : IFWDataType
        public string Render(FWDataTypeContext oDataTypeContext)
            string sValue = "";
            if (!string.IsNullOrWhiteSpace(oDataTypeContext.SelectedValue))
                sValue = oDataTypeContext.SelectedValue;
            string sHTML = $"<input name='{oDataTypeContext.ControlID}' type='text' value='{sValue}' id='{oDataTypeContext.ControlID}'>";
            return (sHTML);