C# 在新线程上运行简单函数的最佳方法？
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Best way to run a simple function on a new Thread?
提问by Malfist
I have two functions that I want to run on different threads (because they're database stuff, and they're not needed immediately).
我有两个要在不同线程上运行的函数（因为它们是数据库的东西，并且不需要立即使用）。
The functions are:
功能是：
getTenantReciept_UnitTableAdapter1.Fill(rentalEaseDataSet1.GetTenantReciept_Unit);
getTenantReciept_TenantNameTableAdapter1.Fill(rentalEaseDataSet1.GetTenantReciept_TenantName);
In javascript, I know I can create create an anonymous function and call it on a new thread quite easily with something like this:
在 javascript 中，我知道我可以创建一个匿名函数并很容易地在一个新线程上调用它，如下所示：
setTimeout(new function(){doSomethingImportantInBackground();}, 500);
Is there something like this in C#?
C#中有这样的东西吗？
采纳答案by Jon Skeet
Your question isn't very clear, I'm afraid. You can easily start a new thread with some code, using anonymous methods in C# 2, and lambda expressions in C# 3:
恐怕你的问题不是很清楚。您可以使用一些代码轻松启动一个新线程，使用 C# 2 中的匿名方法和 C# 3 中的 lambda 表达式：
Anonymous method:
匿名方法：
new Thread(delegate() {
getTenantReciept_UnitTableAdapter1.Fill(
rentalEaseDataSet1.GetTenantReciept_Unit);
}).Start();
new Thread(delegate() {
getTenantReciept_TenantNameTableAdapter1.Fill(
rentalEaseDataSet1.GetTenantReciept_TenantName);
}).Start();
Lambda expression:
拉姆达表达式：
new Thread(() =>
getTenantReciept_UnitTableAdapter1.Fill(
rentalEaseDataSet1.GetTenantReciept_Unit)
).Start();
new Thread(() =>
getTenantReciept_TenantNameTableAdapter1.Fill(
rentalEaseDataSet1.GetTenantReciept_TenantName)
).Start();
You can use the same sort of syntax for Control.Invoke, but it's slightly trickier as that can take anydelegate - so you need to tell the compiler which type you're using rather than rely on an implicit conversion. It's probably easiest to write:
您可以对 使用相同类型的语法Control.Invoke，但它有点棘手，因为它可以接受任何委托 - 因此您需要告诉编译器您使用的是哪种类型，而不是依赖于隐式转换。可能最简单的写法是：
EventHandler eh = delegate
{
// Code
};
control.Invoke(eh);
or
或者
EventHandler eh = (sender, args) =>
{
// Code
};
control.Invoke(eh);
As a side note, are your names really that long? Can you shorten them to get more readable code?
作为旁注，你的名字真的那么长吗？你能缩短它们以获得更易读的代码吗？
回答by Daniel Rodriguez
You could use an anonymous method:
您可以使用匿名方法：
void Foo()
{
Thread myThread = new System.Threading.Thread(delegate(){
//Your code here
});
myThread.Start();
}
回答by oefe
Starting threads is relatively expensive.
启动线程相对昂贵。
You might be better of using a thread from the thread pool:
使用线程池中的线程可能会更好：
ThreadPool.QueueUserWorkItem(unused =>
getTenantReciept_UnitTableAdapter1.Fill(
rentalEaseDataSet1.GetTenantReciept_Unit)
);
ThreadPool.QueueUserWorkItem(unused =>
getTenantReciept_TenantNameTableAdapter1.Fill(
rentalEaseDataSet1.GetTenantReciept_TenantName)
);
回答by JSideris
Similar to what's been said - I find tasks to be a bit simpler (supported as of .net 4and can be used as follows as of .net 4.5):
类似于所说的 - 我发现任务更简单一些（从.net 4 开始支持，从.net 4.5 开始可以按如下方式使用）：
Task mytask = Task.Run(() =>
{
//Lines of code
});
