调用webapi

提示外部组件发生异常 serviceexception。登陆成功的，后面查看单据出错

ApiClient client = new ApiClient("http://127.0.0.1/K3Cloud/");

object[] loginInfo = new object[] {
"58da5d6d4a94ca",//帐套Id
"maoxuqiang",//用户名
"123456",//密码
2052};//语言id
var ret = client.Execute("Kingdee.BOS.WebApi.ServicesStub.AuthService.ValidateUser",loginInfo);
var result = JObject.Parse(ret)["LoginResultType"].Value();
// 登陆成功
if (result == 1)
{
//string sJson = "{\"Number\":\"AR00000023\"}";
string g = "SAL_SaleOrder";
string f = "{\"CreateOrgId\":100007,\"Numbers\":\"'XSDD000021'\"}";
var str1= client.Execute("Kingdee.BOS.WebApi.ServicesStub.DynamicFormService.View",new object [] {g,f});
///执行到这一步，提示外部组件发生异常 serviceexception
textBox1.Text = str1;
}
}