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Business Rules are Boolean expressions you write and apply to the lines that connect activities to one another at points where the process can flow in different directions depending on the conditions encountered by the activities. When you apply a Business Rule to an activity line, you are setting the conditions that determine whether the process can flow through that line or not.

To add business rules to workflows

1. Right-click anywhere on the white space of the workflow open in the Workflow Designer and

   select 

   select Workflow Business Rules

    from

    from the context menu.
   

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2. Enter a name for the Business Rule in the Workflow Business Rules window that opens and click on

   the 

   the Add

    button

    button.
   

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3. Double-click the new rule to create an event handler for it.
   

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4. Add code for the Business Rule in the C# Editor that opens.
   

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Apply the rule to activity lines 

1. Right-click one of the lines proceeding from an activity where more than one outcome is possible and

   choose 

   choose Select Line Rule

    from

    from the context menu.
   

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2. In the Select Rule window that appears, from

   the 

   the Rule

    drop

    drop-down list, select the rule. To have the process flow through the line when

   a 

   a false

    condition

    condition is met, select the If Rule Not True option. Otherwise leave the option cleared.
   
   

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3. Click 

   Click OK

    to

    to close the Select Rule window.

4. Repeat the process for the second line proceeding from the same activity, this time setting

   the 

   the If Rule Not True

    option

    option to the opposite as that set for the first line.

5. The lines change color after the Business Rules are applied.

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