有一个WinForms应用程序,最近,在打开某些表单时开始显示设计时错误:
找不到引用合同的默认端点元素...
您可以看到winforms设计师截图here。
这是一个记录良好的问题(例如here,here和here),但我的问题只是在我尝试引入依赖注入时才出现。
我有一个调用此Web服务的业务层对象。我改变了一些类似的方法:
public class Stocks : BusinessObjectBase
{
private readonly IAxReferenceService axService;
private readonly IDALStock dalstock;
public Stocks()
{
this.axService = new AxReferenceServiceClient();
this.dalstock = new DALStock();
}
public Stocks(IAxReferenceService axService, IDALStock dalStock)
{
this.axService = axService;
this.dalstock = dalStock;
}
public IEnumerable<Model.Stock> GetStock() {
return this.axService.GetStock();
}
}
当我删除此服务的依赖注入时,它突然全部起作用:
public class Stocks : BusinessObjectBase
{
private readonly IDALStock dalstock;
public Stocks()
{
this.dalstock = new DALStock();
}
public Stocks(IDALStock dalStock)
{
this.dalstock = dalStock;
}
public IEnumerable<Model.Stock> GetStock() {
using (var axService = new AxReferenceServiceClient()) {
return axService.GetStock();
}
}
}
我的网络服务配置如下(是的,它都在业务层项目和主项目中):
<binding name="BasicHttpBinding_IAxReferenceService"
maxBufferSize="2147483647"
maxBufferPoolSize="2147483647"
maxReceivedMessageSize="2147483647" >
<readerQuotas maxDepth="32"
maxStringContentLength="2147483647"
maxArrayLength="2147483647"
maxBytesPerRead="2147483647"
maxNameTableCharCount="2147483647" />
</binding>
...
<endpoint address="http://.../AxReferenceService.svc"
binding="basicHttpBinding"
bindingConfiguration="BasicHttpBinding_IAxReferenceService"
contract="AX.IAxReferenceService"
name="BasicHttpBinding_IAxReferenceService" />
我注射后引入的问题是什么?
答案 0 :(得分:0)
我还没有找到成功修复此特定问题的方法(除非在我的构造函数中捕获此特定异常并检查它的设计时间)。
我假设Visual Studio设计时在一个单独的位置编译,并且不复制app.config文件。
但是,我发现我的用户控件依赖注入错误(请参阅:here和here)
所以,对于我的特定错误控件,我已经用属性注入替换了我的构造函数注入(实际上是通过一个方法,但是嘿)。
public ucSelectStock()
{
InitializeComponent();
}
public void LoadControl(
IStocks stocks,
IStockFactory factory)
{
this.stocksBll = stocks;
this.stockFactory = factory;
// these were creating many problems because they're badly designed.
// moving them from constructor to method fixes the design-time problems
this.SelectorProduct = new GridCheckMarksProductSelection();
this.SelectorSupport = new GridCheckMarksSupportSelection();
}
然后我在容器表单的LoadControl
事件中调用Form_Load
。