方法 'CustomerOrderInsert' 没有重载需要 10 个参数 Blazor 服务器

Question

我正在尝试保存syncfusion编辑表单中的数据我真的不知道我做错了什么，或者为什么我得到这个错误。

private async Task OrderLineSave()
{
await CustomerOrderService.CustomerOrderInsert(addeditOrderLine.OrderProductID = ProductID,
addeditOrderLine.OrderCustomerName,
addeditOrderLine.OrderCustomerPhoneNumber,
addeditOrderLine.OrderDeliveryAddress,
addeditOrderLine.OrderInscription,
addeditOrderLine.OrderInstruction,
addeditOrderLine.OrderDeliveryDate,
addeditOrderLine.OrderPickupTime,
addeditOrderLine.OrderRecipient,
addeditOrderLine.OrderFlavor);
}

下面是我的service class

public async Task<bool> CustomerOrderInsert(CustomerOrder customerorder)
{
using (var conn = new SqlConnection(_configuration.Value))
{
var parameters = new DynamicParameters();
parameters.Add("OrderProductID", customerorder.OrderProductID, DbType.Int32);
parameters.Add("OrderCustomerName", customerorder.OrderCustomerName, DbType.String);
parameters.Add("OrderCustomerPhoneNumber", customerorder.OrderCustomerPhoneNumber, DbType.String);
parameters.Add("OrderDeliveryAddress", customerorder.OrderDeliveryAddress, DbType.String);
parameters.Add("OrderInscription", customerorder.OrderInscription, DbType.String);
parameters.Add("OrderInstruction", customerorder.OrderInstruction, DbType.String);
parameters.Add("OrderDeliveryDate", customerorder.OrderDeliveryDate, DbType.DateTime);
parameters.Add("OrderPickupTime", customerorder.OrderPickupTime, DbType.DateTime);
parameters.Add("OrderRecipient", customerorder.OrderRecipient, DbType.String);
parameters.Add("OrderFlavor", customerorder.OrderFlavor, DbType.String);
parameters.Add("OrderIsArchived", customerorder.OrderIsArchived, DbType.Boolean);
// Stored procedure method
await conn.ExecuteAsync("spCustomerOrder_Insert", parameters, commandType: CommandType.StoredProcedure);
}
return true;
}

Answer 1

方法期望一个参数:

public async Task<bool> CustomerOrderInsert(CustomerOrder customerorder)
// ^--------- here ----------^

它期待CustomerOrder对象的单个实例。但是当你调用这个方法时，你提供了十个参数:

CustomerOrderService.CustomerOrderInsert(addeditOrderLine.OrderProductID = ProductID,
addeditOrderLine.OrderCustomerName,
addeditOrderLine.OrderCustomerPhoneNumber,
addeditOrderLine.OrderDeliveryAddress,
addeditOrderLine.OrderInscription,
addeditOrderLine.OrderInstruction,
addeditOrderLine.OrderDeliveryDate,
addeditOrderLine.OrderPickupTime,
addeditOrderLine.OrderRecipient,
addeditOrderLine.OrderFlavor)

从它们的名字来看，它们似乎是单独的值，但它们绝对不是单个对象。

addeditOrderLine会是CustomerOrder的一个实例吗?如果是，只需将其传递给方法:

CustomerOrderService.CustomerOrderInsert(addeditOrderLine)

如果没有，则需要创建CustomerOrder的实例。最初可以像这样简单:

CustomerOrderService.CustomerOrderInsert(new CustomerOrder())

当然，这将是一个只有默认值的新实例。如果你想要将你的值添加到那个实例中，那么你必须像创建那个实例时那样做。例如，可以作为构造函数参数。或者你可以先创建一个实例，单独设置它的所有值，然后用那个实例调用方法。

最终这部分取决于你，因为我们不知道addeditOrderLine是什么或CustomerOrder是什么。但错误本身的根源非常简单……该方法需要一个单独的CustomerOrder对象，而不是一堆单独的值。