ModelValidationException是未处理的用户代码，（plz help） [英] ModelValidationException was unhandled user code, (plz help)

问题描述

public int GetCount()
        {
            ShoppingCartId = GetCartId();

            // Get the count of each item in the cart and sum them up          
            int? count = (from cartItems in _db.ShoppingCartItems
                          where cartItems.CartId == ShoppingCartId
                          select (int?)cartItems.Quantity).Sum();
            // Return 0 if all entries are null         
            return count ?? 0;
        }

你能否帮我解决以下错误，我查了一切没有ID错误



ModelValidationException未由用户代码处理



EntityFramework中出现'System.Data.Entity.ModelConfiguration.ModelValidationException'类型的异常.dll但未在用户代码中处理



附加信息：在模型生成期间检测到一个或多个验证错误：

Can you help me on the following error, i checked everything no ID mistakes

ModelValidationException was un handled by user code

An exception of type 'System.Data.Entity.ModelConfiguration.ModelValidationException' occurred in EntityFramework.dll but was not handled in user code

Additional information: One or more validation errors were detected during model generation:

推荐答案

U need to set primary key of ur table in database and Key in model class

检查你的表必须有记录



：）

Check you table It must has records

:)

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