C# 通过.net core上的模式添加/编辑记录

我一直在尝试通过在.NETCore中使用模式来创建一个能够添加/编辑记录的数据库

我一直在尝试一些教程，比如

这两种方法都不像.net那样有效。模态没有出现

ViewClients.cshtml

---

您是否在项目中创建了DbContext类

下面的代码只是用于显示数据和编辑或向表中添加数据的示例

   [HttpGet]  
        public IActionResult AddEditCustomer(long? id)  
        {  
            CustomerViewModel model = new CustomerViewModel();  
            if (id.HasValue)  
            {  
                Customer customer = context.Set<Customer>().SingleOrDefault(c => c.Id == id.Value);  
                if (customer != null)  
                {  
                    model.Id = customer.Id;  
                    model.FirstName = customer.FirstName;  
                    model.LastName = customer.LastName;  
                    model.MobileNo = customer.MobileNo;  
                    model.Email = customer.Email;  
                }  
            }  
            return PartialView("~/Views/Customer/_AddEditCustomer.cshtml", model);  
        }  

        [HttpPost]  
        public ActionResult AddEditCustomer(long? id, CustomerViewModel model)  
        {  
            try  
            {  
                if (ModelState.IsValid)  
                {  
                    bool isNew = !id.HasValue;  
                    Customer customer = isNew ? new Customer  
                    {  
                        AddedDate = DateTime.UtcNow  
                    } : context.Set<Customer>().SingleOrDefault(s => s.Id == id.Value);  
                    customer.FirstName = model.FirstName;  
                    customer.LastName = model.LastName;  
                    customer.MobileNo = model.MobileNo;  
                    customer.Email = model.Email;  
                    customer.IPAddress = Request.HttpContext.Connection.RemoteIpAddress.ToString();  
                    customer.ModifiedDate = DateTime.UtcNow;  
                    if (isNew)  
                    {  
                        context.Add(customer);  
                    }  
                    context.SaveChanges();  
                }  
            }  
            catch (Exception ex)  
            {  
                throw ex;  
            }  
            return RedirectToAction("Index");  
        }  

[HttpGet]
公共IActionResult AddEditCustomer（长？id）
{  
CustomerViewModel模型=新CustomerViewModel（）；
if（id.HasValue）
{  
Customer=context.Set（）.SingleOrDefault（c=>c.Id==Id.Value）；
如果（客户！=null）
{  
model.Id=customer.Id；
model.FirstName=customer.FirstName；
model.LastName=customer.LastName；
model.MobileNo=customer.MobileNo；
model.Email=customer.Email；
}  
}  
返回PartialView（“~/Views/Customer/_AddEditCustomer.cshtml”，model）；
}  
[HttpPost]
public ActionResult AddEditCustomer（长？id，CustomServiceWModel模型）
{  
尝试
{  
if（ModelState.IsValid）
{  
bool isNew=！id.HasValue；
客户=isNew？新客户
{  
AddedDate=DateTime.UtcNow
}：context.Set（）.SingleOrDefault（s=>s.Id==Id.Value）；
customer.FirstName=model.FirstName；
customer.LastName=model.LastName；
customer.MobileNo=model.MobileNo；
customer.Email=model.Email；
customer.IPAddress=Request.HttpContext.Connection.RemoteIpAddress.ToString（）；
customer.ModifiedDate=DateTime.UtcNow；
如果（是新的）
{  
添加（客户）；
}  
SaveChanges（）；
}  
}  
捕获（例外情况除外）
{  
掷骰子；
}  
返回操作（“索引”）；
}  

您是否在项目中创建了DbContext类

下面的代码只是用于显示数据和编辑或向表中添加数据的示例

   [HttpGet]  
        public IActionResult AddEditCustomer(long? id)  
        {  
            CustomerViewModel model = new CustomerViewModel();  
            if (id.HasValue)  
            {  
                Customer customer = context.Set<Customer>().SingleOrDefault(c => c.Id == id.Value);  
                if (customer != null)  
                {  
                    model.Id = customer.Id;  
                    model.FirstName = customer.FirstName;  
                    model.LastName = customer.LastName;  
                    model.MobileNo = customer.MobileNo;  
                    model.Email = customer.Email;  
                }  
            }  
            return PartialView("~/Views/Customer/_AddEditCustomer.cshtml", model);  
        }  

        [HttpPost]  
        public ActionResult AddEditCustomer(long? id, CustomerViewModel model)  
        {  
            try  
            {  
                if (ModelState.IsValid)  
                {  
                    bool isNew = !id.HasValue;  
                    Customer customer = isNew ? new Customer  
                    {  
                        AddedDate = DateTime.UtcNow  
                    } : context.Set<Customer>().SingleOrDefault(s => s.Id == id.Value);  
                    customer.FirstName = model.FirstName;  
                    customer.LastName = model.LastName;  
                    customer.MobileNo = model.MobileNo;  
                    customer.Email = model.Email;  
                    customer.IPAddress = Request.HttpContext.Connection.RemoteIpAddress.ToString();  
                    customer.ModifiedDate = DateTime.UtcNow;  
                    if (isNew)  
                    {  
                        context.Add(customer);  
                    }  
                    context.SaveChanges();  
                }  
            }  
            catch (Exception ex)  
            {  
                throw ex;  
            }  
            return RedirectToAction("Index");  
        }  

[HttpGet]
公共IActionResult AddEditCustomer（长？id）
{  
CustomerViewModel模型=新CustomerViewModel（）；
if（id.HasValue）
{  
Customer=context.Set（）.SingleOrDefault（c=>c.Id==Id.Value）；
如果（客户！=null）
{  
model.Id=customer.Id；
model.FirstName=customer.FirstName；
model.LastName=customer.LastName；
model.MobileNo=customer.MobileNo；
model.Email=customer.Email；
}  
}  
返回PartialView（“~/Views/Customer/_AddEditCustomer.cshtml”，model）；
}  
[HttpPost]
public ActionResult AddEditCustomer（长？id，CustomServiceWModel模型）
{  
尝试
{  
if（ModelState.IsValid）
{  
bool isNew=！id.HasValue；
客户=isNew？新客户
{  
AddedDate=DateTime.UtcNow
}：context.Set（）.SingleOrDefault（s=>s.Id==Id.Value）；
customer.FirstName=model.FirstName；
customer.LastName=model.LastName；
customer.MobileNo=model.MobileNo；
customer.Email=model.Email；
customer.IPAddress=Request.HttpContext.Connection.RemoteIpAddress.ToString（）；
customer.ModifiedDate=DateTime.UtcNow；
如果（是新的）
{  
添加（客户）；
}  
SaveChanges（）；
}  
}  
捕获（例外情况除外）
{  
掷骰子；
}  
返回操作（“索引”）；
}  

这是因为您缺少HTTP Post属性。请查看此处的文档

---

这是因为您缺少HTTP Post属性。请参阅此处的文档

---

是的，这不是问题所在。使用该方法返回部分视图而不是部分视图不是很晚。您可以在asp core mvc中使用ViewComponent。是的，这不是问题所在。返回部分视图而不是部分视图的方法还不是很晚。您可以在asp core mvc中使用ViewComponent。因为您没有用[HTTPPOST]修饰您的方法，所以必须修饰它，否则ajax将找不到MoethodBeach，因为您没有用[HTTPPOST]修饰您的方法它必须装饰，否则ajax将找不到moethod

   public IActionResult EditClient(int ClientID)
    {
        Clients client = new Clients();

        if(ClientID > 0)
        {
            var user = _context.ClientTable.SingleOrDefault(x => x.ClientID == clientID);
            client.ClientID = user.ClientID;
            client.ClientName = user.ClientName;
        }
        return PartialView("EditClient", client);

    }
}

   [HttpGet]  
        public IActionResult AddEditCustomer(long? id)  
        {  
            CustomerViewModel model = new CustomerViewModel();  
            if (id.HasValue)  
            {  
                Customer customer = context.Set<Customer>().SingleOrDefault(c => c.Id == id.Value);  
                if (customer != null)  
                {  
                    model.Id = customer.Id;  
                    model.FirstName = customer.FirstName;  
                    model.LastName = customer.LastName;  
                    model.MobileNo = customer.MobileNo;  
                    model.Email = customer.Email;  
                }  
            }  
            return PartialView("~/Views/Customer/_AddEditCustomer.cshtml", model);  
        }  

        [HttpPost]  
        public ActionResult AddEditCustomer(long? id, CustomerViewModel model)  
        {  
            try  
            {  
                if (ModelState.IsValid)  
                {  
                    bool isNew = !id.HasValue;  
                    Customer customer = isNew ? new Customer  
                    {  
                        AddedDate = DateTime.UtcNow  
                    } : context.Set<Customer>().SingleOrDefault(s => s.Id == id.Value);  
                    customer.FirstName = model.FirstName;  
                    customer.LastName = model.LastName;  
                    customer.MobileNo = model.MobileNo;  
                    customer.Email = model.Email;  
                    customer.IPAddress = Request.HttpContext.Connection.RemoteIpAddress.ToString();  
                    customer.ModifiedDate = DateTime.UtcNow;  
                    if (isNew)  
                    {  
                        context.Add(customer);  
                    }  
                    context.SaveChanges();  
                }  
            }  
            catch (Exception ex)  
            {  
                throw ex;  
            }  
            return RedirectToAction("Index");  
        }  

[HTTPPOST]
public IActionResult EditClient(int ClientID)
{
    Clients client = new Clients();

    if(ClientID > 0)
    {
        var user = _context.ClientTable.SingleOrDefault(x => x.ClientID == clientID);
        client.ClientID = user.ClientID;
        client.ClientName = user.ClientName;
    }
    return PartialView("EditClient", client);

}
}