C# 变量'；MyException'；已声明但从未在实例中使用

我需要清除此警告：

try
 {
    // doSomething();
 }
 catch (AmbiguousMatchException MyException)
 {
    // doSomethingElse();
 }

编译器告诉我：变量“MyException”已声明，但从未使用过

---

如何修复此问题。

如果您不打算使用异常详细信息，可以使用以下方法：

try
{
    doSomething();
}
catch // all types of exceptions will caught here
// if you need to deal with particular type of exceptions then specify them like
//  catch (AmbiguousMatchException)
{
    doSomethingElse();
}

否则，您必须将该变量用于以下内容：

try
{
    doSomething();
}
catch (AmbiguousMatchException MyException)
{
    WriteToLog(MyException.ToString());
  //  doSomethingElse();
}

public static void WriteToLog(string exceptionDetails) { 
  // write the details to a file/DB
}

其中

WriteToLog

方法的定义如下：

try
{
    doSomething();
}
catch (AmbiguousMatchException MyException)
{
    WriteToLog(MyException.ToString());
  //  doSomethingElse();
}

public static void WriteToLog(string exceptionDetails) { 
  // write the details to a file/DB
}

---

如果您不打算使用异常详细信息，您可以像这样使用try：

try
{
    doSomething();
}
catch // all types of exceptions will caught here
// if you need to deal with particular type of exceptions then specify them like
//  catch (AmbiguousMatchException)
{
    doSomethingElse();
}

否则，您必须将该变量用于以下内容：

try
{
    doSomething();
}
catch (AmbiguousMatchException MyException)
{
    WriteToLog(MyException.ToString());
  //  doSomethingElse();
}

public static void WriteToLog(string exceptionDetails) { 
  // write the details to a file/DB
}

其中

WriteToLog

方法的定义如下：

try
{
    doSomething();
}
catch (AmbiguousMatchException MyException)
{
    WriteToLog(MyException.ToString());
  //  doSomethingElse();
}

public static void WriteToLog(string exceptionDetails) { 
  // write the details to a file/DB
}

试试这个

try
{
    doSomething()
}
catch (AmbiguousMatchException)
{
    doSomethingElse()
}

试试这个

try
{
    doSomething()
}
catch (AmbiguousMatchException)
{
    doSomethingElse()
}