Скачать или смотреть Episode 2 Creating a Parameter Table in Dynamics 365 Finance and Operations (D365 FO) X++

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Understanding Parameter Tables

Parameter tables in D365 FO are used to store configuration data that can be used across various parts of the application. They provide a flexible way to customize the system's behavior without modifying the core code.

Steps to Create a Parameter Table:

Create a New Table:

Open the Application Object Tree (AOT).
Right-click on the Tables node and select New.
Define the table name, display name, and description.
Add fields to the table to store the parameter values. Common fields include:
ParameterID: A unique identifier for the parameter.
ParameterName: A descriptive name for the parameter.
ParameterValue: The actual value of the parameter.
DataType: The data type of the parameter (e.g., string, integer, date).
Create a Form:

Design a form to allow users to view and edit parameter values.
Add controls to display and edit the fields of the parameter table.
Implement appropriate validation and error handling.
Implement Parameter Usage:

Reference the parameter table in your X++ code to retrieve and use the parameter values.
Use the parm keyword to access parameter values in methods and queries.
Example:

Let's create a parameter table to store a company's tax rate:

X++
// Table: MyCompanyParameters
static table MyCompanyParameters
{
FieldId FieldId int;
FieldName FieldName Label;
FieldValue FieldValue Label;

index
{
Index(FieldId);
}
}

// Form: MyCompanyParametersForm
form MyCompanyParametersForm
{
dataSource
{
MyCompanyParameters
}
}
Use code with caution.

Accessing Parameter Values:

X++
static void MyMethod(Args _args)
{
MyCompanyParameters companyParameters = MyCompanyParameters::find();

// Access the tax rate parameter
real taxRate = companyParameters.FieldValue;

// Use the tax rate in calculations
// ...
}
Use code with caution.

Key Considerations:

Data Type: Choose the appropriate data type for each parameter based on the type of value it will store.
Validation: Implement validation rules to ensure data integrity.
Security: Control access to the parameter table and its data to prevent unauthorized changes.
Performance: Consider indexing the table for efficient querying.
Best Practices: Follow X++ coding standards and best practices to write clean and maintainable code.
By following these steps and considering the best practices, you can effectively create and use parameter tables in Dynamics 365 Finance and Operations to customize your system and improve its flexibility.