WCF返回客户端中的访问对象

Question

我有一个WCF服务，它返回一个类对象。如何在客户端应用程序中访问这些返回值。

服务代码：

public ET_ITAM_RequestDetails GetAssociateFreewareRequestDetails(ET_ITAM_RequestDetails objET_ITAM_RequestDetails)
{
    SqlDataReader rdr = null;
    connect.Open();
    SqlCommand cmd = new SqlCommand("ET_ITAM_GetAssociateFreewareRequestDetails", connect);
    cmd.CommandType = CommandType.StoredProcedure;
    while (rdr.Read())
    {
        objET_ITAM_RequestDetails.AssociateID = (string)rdr[0];
        objET_ITAM_RequestDetails.AssetID = (string)rdr[1];
        objET_ITAM_RequestDetails.ETRequestID = (int)rdr[2];
        objET_ITAM_RequestDetails.FreewareName = (string)rdr[3];
        objET_ITAM_RequestDetails.InstallationCommand = (string)rdr[4];
        objET_ITAM_RequestDetails.InstallationArguments = (string)rdr[5];
        objET_ITAM_RequestDetails.VerificationType = (bool)rdr[6];
        objET_ITAM_RequestDetails.VerificationPath = (string)rdr[7];
    }
    return objET_ITAM_RequestDetails;
}

在客户端：

ServiceReference1.ET_ITAM_RequestDetails objItam = new 
ServiceReference1.ET_ITAM_RequestDetails();
// need to get return value.
// if i create another object it not work as expected
obj_service.GetAssociateFreewareRequestDetails(objItam);

Answer 1

根据ServiceReference1判断，您似乎已经成功地将WCF引用添加到客户端解决方案中。然而，据我所知，您缺少WCF客户端。

你还没有提供足够的信息来知道你的客户会被称为什么，但你的代码应该看起来像：

ServiceReference1.ET_ITAM_RequestDetails objItam = new 
    ServiceReference1.ET_ITAM_RequestDetails();
// the service generation will create a WCF client for you, thought I'm not sure what your client's name would be.
objItam = obj_service.GetAssociateFreewareRequestDetails(objItam);

---

再次查看您的代码，我想我看到了您的问题。您对wcf客户端进行了更新，但没有提供相应的代码。

obj_service.GetAssociateFreewareRequestDetails(objItam);

您只是简单地调用函数，而不是将其值分配回对象。

objItam = obj_service.GetAssociateFreewareRequestDetails(objItam);

我不清楚你为什么要新建一个空对象，把它传递到你的函数中，然后返回它。为什么不只是新建它，然后在函数中返回它呢？

public ET_ITAM_RequestDetails GetAssociateFreewareRequestDetails()
{
    ET_ITAM_RequestDetails objET_ITAM_RequestDetails = new ET_ITAM_RequestDetails();
    SqlDataReader rdr = null;
    connect.Open();
    SqlCommand cmd = new SqlCommand("ET_ITAM_GetAssociateFreewareRequestDetails", connect);
    cmd.CommandType = CommandType.StoredProcedure;
    while (rdr.Read())
    {
        objET_ITAM_RequestDetails.AssociateID = (string)rdr[0];
        objET_ITAM_RequestDetails.AssetID = (string)rdr[1];
        objET_ITAM_RequestDetails.ETRequestID = (int)rdr[2];
        objET_ITAM_RequestDetails.FreewareName = (string)rdr[3];
        objET_ITAM_RequestDetails.InstallationCommand = (string)rdr[4];
        objET_ITAM_RequestDetails.InstallationArguments = (string)rdr[5];
        objET_ITAM_RequestDetails.VerificationType = (bool)rdr[6];
        objET_ITAM_RequestDetails.VerificationPath = (string)rdr[7];
    }
    return objET_ITAM_RequestDetails;
}

如果你的读者有不止一行，上面（和你的原文）当然会（可能）产生意想不到的结果——只是在你不知道的情况下喊出来。