如何跳过循环条件来获取功能

Question

一些代码

foreach (DataModelObject dmo in allObjects)
{
    if (dmo is IResourcePolicy)
    {
         if (string.Compare(dmo.Name, hostName, true) == 0)
         {
             IResourcePolicy irp = (IResourcePolicy)dmo;
             irp.ResourcePolicy = rp;
             irp.AgentPolicyVersion.Version = Convert.ToInt64(policyVersion);
             irp.ResourcePolicyEnabled = Convert.ToBoolean(enabled);
             irp.AgentVersion = agentVersion;

             // Distribute the object without saving it.
             SpoServer.Spurt.ServerSendObject(dmo, true, 0);

             break;
         }
    }
}

这是我想要执行此语句“irp.AgentVersion = agentVersion;”的 不执行这三个循环“ foreach (DataModelObject dmo in allObjects),if (dmo 是 IResourcePolicy), if (string.Compare(dmo.Name, hostName, true) == 0)",, 如果执行这些循环，那么我想执行整个四个作业 循环内部还包括之前的赋值（irp.AgentVersion = agentVersion;）。 以前，在不执行循环的情况下，它在 UI 中不显示任何内容，一旦执行 显示我们需要更改的所有值，

任何人都可以提供执行此逻辑的代码吗，我们可以在这里执行“Goto”循环条件检查

Answer 1

我相信您正在寻找继续。

if (dmo is IResourcePolicy)
{
    etc...
}
else
{
    continue;
}

编辑：

根据评论，我理解您想要做的事情如下：

另请注意，这里只有一个循环，一旦满足您的内部条件，您就会打破它。我想这可能是让你感到困惑的地方。现在的情况是，您将始终只处理集合中的一个对象。

下面删除了break语句，因此它将处理集合中的每个对象。

foreach (DataModelObject dmo in allObjects)
{
    if (dmo is IResourcePolicy)
    {
         // if these loops are not executed i want to show agentversion instead of showing None in UI layer
         IResourcePolicy irp = (IResourcePolicy)dmo;
         irp.AgentVersion = agentVersion;

         //(else) i want to show the entire four things including agent version
         if (string.Compare(dmo.Name, hostName, true) == 0)
         {             
             irp.ResourcePolicy = rp;
             irp.AgentPolicyVersion.Version = Convert.ToInt64(policyVersion);
             irp.ResourcePolicyEnabled = Convert.ToBoolean(enabled);
         }

         // Distribute the object without saving it.
         SpoServer.Spurt.ServerSendObject(dmo, true, 0);
    }
}

Answer 2

破译你要找的东西有点困难，但我会尝试一下：

bool objectsFound = false;
foreach (DataModelObject dmo in allObjects)
{
    if (dmo is IResourcePolicy && string.Compare(dmo.Name, hostName, true) == 0)
    {
        // ...
        objectsFound = true;
    }
}

if(objectsFound)
{
    // "show the entire four things including agent version"
}
else
{
    // " show agentversion instead of showing None in UI layer"
}

Answer 3

您可以使用一些 LINQ 来消除循环和嵌套 if 语句。总体思路如下：

var objects = new List<Object>();
objects.Add(1);
objects.Add("string");
objects.Add("magic");
objects.Add(2.5);

var magic = (from o in objects
             where o is string
                && ((string)o) == "magic"
             select o as string).SingleOrDefault();

if(magic != null) {
    Console.Write("magic found: {0}", magic);
}
else {
    // Do your other logic if nothing was found (loop, etc)
}

Answer 4

如果我有 .NET 3.5 或更好的版本，我将如何重写该代码。没有循环，只有一个 if 语句。

var irp = allObjects.OfType<IResourcePolicy>()
    .FirstOrDefault(item => String.Equals(item.Name, hostName));

if (irp != null)
{
     irp.ResourcePolicy = rp;
     irp.AgentPolicyVersion.Version = Convert.ToInt64(policyVersion);
     irp.ResourcePolicyEnabled = Convert.ToBoolean(enabled);
     irp.AgentVersion = agentVersion;

     // I don't know the signature of ServerSendObject, 
     // you might need a cast here:
     SpoServer.Spurt.ServerSendObject(irp, true, 0);
}

Answer 5

我不清楚你想做什么。这很接近吗？

foreach (DataModelObject dmo in allObjects) 
{ 
    if (dmo is IResourcePolicy)
    {
         IResourcePolicy irp = (IResourcePolicy)dmo; 
         irp.AgentVersion = agentVersion; 

         if (string.Compare(dmo.Name, hostName, true) == 0) 
         {
            irp.ResourcePolicy = rp; 
            irp.AgentPolicyVersion.Version = Convert.ToInt64(policyVersion); 
            irp.ResourcePolicyEnabled = Convert.ToBoolean(enabled); 
         }

         // Distribute the object without saving it. 
         SpoServer.Spurt.ServerSendObject(dmo, true, 0); 

         break; 
    }
}