How to expand/collapse specific categories in code for C1PropertyGrid for WPF
Arrow buttons for expansion/collapse are actually C1ExpanderButton that are part of C1Expander element present in each category. C1Expander has property IsExpanded that defines whether a category is expanded or collapsed.
So, access these C1Expander through C1PropertyGrid’s CategoryContainers and set the IsExpanded property for the specific category
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