[CHORE] 如何在Elsa 3.0中使用switch condition? about elsa-core HOT 2 CLOSED

To use a switch condition in Elsa 3.0, you would typically define a Switch activity within your workflow that evaluates an expression and executes different branches based on the result. However, as of my knowledge cutoff date in April 2023, there is no direct documentation or example provided in the sources you've given that explicitly shows how to use a Switch activity in Elsa 3.0.

In general, a Switch activity works by evaluating an expression and then running the branch that corresponds to the result of that expression. Here's a conceptual example of how you might define a Switch activity in code:

var workflow = new WorkflowBuilder()
    .StartWith<WriteLine>(x => x.TextExpression = new LiteralExpression("Enter a number:"))
    .Then<ReadLine>()
    .Then<Switch>(@switch =>
    {
        @switch
            .When("1").Then<WriteLine>(x => x.TextExpression = new LiteralExpression("You entered one."))
            .When("2").Then<WriteLine>(x => x.TextExpression = new LiteralExpression("You entered two."))
            .Default<WriteLine>(x => x.TextExpression = new LiteralExpression("You entered something else."));
    })
    .Build();

In this example, the Switch activity evaluates the output of a ReadLine activity. Depending on the user's input, it executes different WriteLine activities.

Please note that the above code is a hypothetical example and may not directly apply to Elsa 3.0 as the API could have changed. For the most accurate and up-to-date information, you should consult the official Elsa 3.0 documentation or reach out to the community for support, such as the Elsa Discord channel or the GitHub repository issues where you can ask for examples or guidance on using the Switch activity in Elsa 3.0.

If you need further assistance or specific code examples for Elsa 3.0, I recommend checking the official Elsa documentation or contacting the maintainers directly through their support channels.

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