Set default value for a comboBox in Dynamics AX 2012 with X++

Beside modify metadata on form properties, as best practice we can use code like below to assign default value for combobox.

• You can use this code in the form’s init method after super():

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ComboBoxName.selection(ComboBoxName::DefaultValue);

• If this is a table field we should you best practice overriding the initValue method in the table:

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this.ComboBoxName = ComboBoxName::DefaultValue;

• Override initValue in the form’s datasource only if it should be a specific behaviour in this form only.