CRM在线客户端返回“验证邮件安全性时发生错误”。 - InvalidSecurity

Question

我试图在Visual Studio 2010中创建一个客户端来访问在线CRM Web服务。 我已将服务参考添加到：

https://<myAccountId>.crm.dynamics.com/XRMServices/2011/Organization.svc?wsdl

以下是代码：

string endPoint = "https://<myAccountId>.crm.dynamics.com/XRMServices/2011/Organization.svc?wsdl";
string UserName = "<myuser>@<mydomain>.onmicrosoft.com";
string Password = "<password>";

OrganizationServiceClient orgProxy = new OrganizationServiceClient();
orgProxy.Endpoint.Address = new EndpointAddress(endPoint);
orgProxy.ClientCredentials.UserName.UserName = UserName;
orgProxy.ClientCredentials.UserName.Password = Password;

ColumnSet cols = new ColumnSet();
cols.Columns = new[] { "fullname" };

QueryExpression query = new QueryExpression();
query.EntityName = "contact";
query.ColumnSet = cols;

orgProxy.RetrieveMultiple(query);

我得到了这个例外：

var exception ='<s:Fault>
        <s:Code>
            <s:Value>
                s:Sender
            </s:Value>
            <s:Subcode>
                <s:Value xmlns:a="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">
                    a:InvalidSecurity
                </s:Value>
            </s:Subcode>
        </s:Code>
        <s:Reason>
            <s:Text xml:lang="en-US">
                An error occurred when verifying security for the message.
            </s:Text>
        </s:Reason>
      </s:Fault>';

使用CRM SDK不是我的选择，因为它需要4.0 .Net框架，我的代码全部是3.5。谢谢！