[英]Access 3rd Party Class That May Not Be Available
I need to access third-party classes that may or may not be available. 我需要访问可能可用或可能不可用的第三方类。 How can we handle a situation like this?
我们如何处理这种情况?
For example: 例如:
Class ThirdPartyClass may or may not be available. ThirdPartyClass类可能可用,也可能不可用。 It has one static variable myInt .
它具有一个静态变量myInt 。
int someInt;
if(ThirdPartyClass is available) // pseudo-code
{
someInt = ThirdPartyClass.myInt;
} else {
someInt = 0;
}
You are basically talking about reflection. 您基本上是在谈论反射。 I am assuming we do not need to try to auto-discover assemblies.
我假设我们不需要尝试自动发现程序集。
You can do this something along the lines of: 您可以按照以下方式执行此操作:
Type t = Type.GetType("<fullyqualifiedname>.ThirdPartyClass", false)
if (t != null)
{
FieldInfo fi = t.GetField("myInt", BindingFlags.Public | BindingFlags.Static);
someInt = (int)fi.GetValue(null);
}
else
someInt = 0;
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