Dbmigration FOREIGN KEY Delete modification

  Public Partial class_20151112:dbmigration { Public Override voidUp () {Dropforeignkey ("dbo. T_roleproductmodule","product_id","dbo. T_product"); Dropindex ("dbo. T_roleproductmodule",New[] {"product_id" }); AddColumn ("dbo. T_roleproductmodule","roleproduct_id", C =c.int ()); CreateIndex ("dbo. T_roleproductmodule","roleproduct_id"); Addforeignkey ("dbo. T_roleproductmodule","roleproduct_id","dbo. T_roleproduct","Id"); Dropcolumn ("dbo. T_roleproductmodule","product_id"); }                 Public Override voidDown () {AddColumn ("dbo. T_roleproductmodule","product_id", C =c.int ()); Dropforeignkey ("dbo. T_roleproductmodule","roleproduct_id","dbo. T_roleproduct"); Dropindex ("dbo. T_roleproductmodule",New[] {"roleproduct_id" }); Dropcolumn ("dbo. T_roleproductmodule","roleproduct_id"); CreateIndex ("dbo. T_roleproductmodule","product_id"); Addforeignkey ("dbo. T_roleproductmodule","product_id","dbo. T_product","Id"); }    }

Dbmigration FOREIGN KEY Delete modification