Question

我通过在SharePoint 2010（表单身份验证）中使用Lists.asmx来获取listitem数据。

代码是这样的。

private void GetItems(string listname)
{
    ListsService.ListsSoapClient client = new ListsService.ListsSoapClient();
    appset = new AppSettings();
    client.CookieContainer = appset.CookieSetting;
    client.GetListItemsAsync(listname, null, null, null, "10", null, null);

    client.GetListItemsCompleted += new EventHandler<ListsService.GetListItemsCompletedEventArgs>(client_GetListItemsCompleted);

}

void client_GetListItemsCompleted(object sender, ListsService.GetListItemsCompletedEventArgs e)
{
    listBox1.ItemsSource = from element in e.Result.Descendants(XName.Get("row", "#RowsetSchema"))
                            select new Lists
                            {
                                Title = (string)element.Attribute("ows_LinkTitle")
                            };
}

当发生表单身份验证超时时，将引发未处理的CommunicationException。堆栈跟踪就在这里。

at System.ServiceModel.Channels.HttpChannelUtilities.ValidateAuthentication（HttpWebRequest request，HttpWebResponse response，WebException responseException，HttpChannelFactory factory）在System.ServiceModel.Channels.HttpChannelUtilities.ValidateRequestReplyResponse（HttpWebRequest请求，HttpWebResponse响应，HttpChannelFactory工厂，WebException responseException）在System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelAsyncRequest.ProcessResponse（HttpWebResponse response，WebException responseException） at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelAsyncRequest.CompleteGetResponse（IAsyncResult result） at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelAsyncRequest.OnGetResponse（IAsyncResult result）在System.Net.Browser.ClientHttpWebRequest。＆lt;＆gt; c_ DisplayClassa.b _8（Object state2）在System.Threading.ThreadPool.WorkItem.doWork（Object o）在System.Threading.Timer.ring（）

即使我使用try~catch，也无法处理CommunicationException。所以，请让我知道如何处理CommunicationException。

Answer 1

您应该在调用GetListItemsAsync之前注册GetListItemsCompleted事件。另外，在try-catch块中包装GetListItemsAsync。

任何错误都将作为GetListItemsAsync调用的异常抛出，或者通过GetListItemsCompletedEventArgs报告为错误。

在SharePoint 2010中使用Lists.asmx时如何处理CommunicationException

1 个答案: