使用块中的对象初始化器生成警告CA 2000的代码分析？
使用块中的对象初始化器生成警告CA 2000的代码分析？
提问于 2018-02-11 04:11:47
以下是代码：
using (var control = new ReCaptchaControl()
{
ID = id,
Theme = theme,
SkipRecaptcha = false
})
{
// Do something here
}代码分析是：
using (var control = new ReCaptchaControl())
{
control.ID = id;
control.Theme = theme;
control.SkipRecaptcha = false;
// Do something here
}这两个代码块有什么区别？
Stack Overflow用户
发布于 2018-02-11 13:29:34
不，这是有区别的。
Foo x = new Foo { Bar = "Baz" };相当于：
Foo tmp = new Foo();
tmp.Bar = "Baz";
Foo x = tmp;using System;
public class ThrowingDisposable : IDisposable
{
public string Name { get; set; }
public string Bang { set { throw new Exception(); } }
public ThrowingDisposable()
{
Console.WriteLine("Creating");
}
public void Dispose()
{
Console.WriteLine("Disposing {0}", Name);
}
}
class Test
{
static void Main()
{
PropertiesInUsingBlock();
WithObjectInitializer();
}
static void PropertiesInUsingBlock()
{
try
{
using (var x = new ThrowingDisposable())
{
x.Name = "In using block";
x.Bang = "Ouch";
}
}
catch (Exception)
{
Console.WriteLine("Caught exception");
}
}
static void WithObjectInitializer()
{
try
{
using (var x = new ThrowingDisposable
{
Name = "Object initializer",
Bang = "Ouch"
})
{
// Nothing
}
}
catch (Exception)
{
Console.WriteLine("Caught exception");
}
}
}输出
Creating
Disposing In using block
Caught exception
Creating
Caught exception页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/-100007381
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