Deletes a category and the data values for that category from the category axis of a graph.
Graph controls in windows and user objects. Does not apply to graphs within DataWindow objects (because their data comes directly from the DataWindow).
controlname.DeleteCategory ( categoryvalue )
Argument  | 
Description  | 
|---|---|
controlname  | 
The graph in which you want to delete a category.  | 
categoryvalue  | 
A value that is the category you want to delete from controlname. The value you specify must be the same datatype as the datatype of the category axis.  | 
Integer. Returns 1 if it succeeds and -1 if an error occurs. If any argument’s value is null, DeleteCategory returns null.
These statements delete the category whose name is entered in the SingleLineEdit sle_delete from the graph gr_product_data:
string CategName
CategName = sle_delete.Text
gr_product_data.DeleteCategory(CategName)