_{کد خطا}

500

_{شرح خطا}

The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult SaleInfo(Int32)' in 'MyWebSite.Controllers.ProductController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter. Parameter name: parameters

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