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C#语法学习异常处理exception
usingSystem;
classTest
{
staticvoidMain()
{
/*
try
{
intn=10;
intm=0;
floatf=n/m;
}
catch(Exceptione)
{
Console.WriteLine(e.Message);
}
finally
{
Console.WriteLine("finally");
}
Console.WriteLine("finallylater");
//*/
/*
try
{
intn=10;
intm=0;
floatf=n/m;
}
catch(Exceptione)
{
Console.WriteLine("ERROR");
}
finally
{
Console.WriteLine("finally");
}
Console.WriteLine("finallylater");
//*/
/*
try
{
intn=10;
intm=0;
floatf=n/m;
}
//這里應該把庇配度高的異常放到前面,依次是庇配度越低的
//自然Exception也就放在最後面.
catch(DivideByZeroExceptione)
{
Console.WriteLine(e.Message);
}
catch(Exceptione)
{
Console.WriteLine(e.Message);
}
finally
{
Console.WriteLine("finally");
}
Console.WriteLine("finallylater");
//*/
/*
try
{
intn=10;
intm=0;
floatf=n/m;
}
//此處catch後面沒有跟(Exceptione)
//程序會認為是catch(Exceptione)
catch
{
Console.WriteLine("ERROR");
}
finally
{
Console.WriteLine("finally");
}
Console.WriteLine("finallylater");
//*/
/*
try
{
strings=null;
if(s==null)
{
thrownewArgumentNullException();
}
}
catch
{
//這里拋出一個異常
Console.WriteLine("接收到拋出的異常");
}
finally
{
Console.WriteLine("finally");
}
Console.WriteLine("finallylater");
//*/
}
}
/*
*CreatedbySharpDevelop.
*User:Administrator
*Date:2008/9/11
*Time:下午04:16
*
*/
usingSystem;
usingSystem.IO;
publicclassExceptions
{
publicstaticintMain()
{
byte[]myStream=newbyte[3];
StreamWritersw=newStreamWriter("exceptions.txt");
try
{
for(byteb=0;b<10;b++)
{
sw.WriteLine("Byte{0}:{1}",b+1,b);
myStream[b]=b;
}
}
catch(Exceptione)
{
Console.WriteLine(e.Message);
}
finally
{
sw.WriteLine("Close");
sw.Close();
}
return0;
}
}
/*
*CreatedbySharpDevelop.
*User:Administrator
*Date:2008/9/11
*Time:下午04:29
*
*/
usingSystem;
usingSystem.IO;
publicclassTooManyItemsException:Exception
{
publicTooManyItemsException():base(@"自己設計的異常信息"){}
}
publicclassExceptionTester
{
publicstaticintMain()
{
ExceptionTestermyExceptionMaker=newExceptionTester();
try
{
myExceptionMaker.GenerateException(5);
}
catch(Exceptione)
{
Console.WriteLine(e.Message);
}
finally
{
Console.WriteLine("FinallyfromMain.");
}
return0;
}
voidGenerateException(intiterations)
{
intmySize=3;
byte[]myStream=newbyte[mySize];
StreamWritersw=newStreamWriter("aa.txt");
try
{
if(iterations>myStream.Length)
{
thrownewTooManyItemsException();
}
for(byteb=0;b<iterations;b++)
{
sw.WriteLine("Byte{0}:{1}",b+1,b);
myStream[b]=b;
}
}
finally
{
Console.WriteLine("FinallyfromGenerateException.");
sw.WriteLine("Close");
sw.Close();
}
}
}
/*
*CreatedbySharpDevelop.
*User:Administrator
*Date:2008/9/11
*Time:下午04:16
*
*/
usingSystem;
usingSystem.IO;
publicclassExceptions
{
publicstaticintMain()
{
byte[]myStream=newbyte[3];
StreamWritersw=newStreamWriter("exceptions.txt");
try
{
for(byteb=0;b<10;b++)
{
sw.WriteLine("Byte{0}:{1}",b+1,b);
myStream[b]=b;
}
}
catch(Exceptione)
{
Console.WriteLine(e.Message);
}
finally
{
sw.WriteLine("Close");
sw.Close();
}
return0;
}
}
/*
*CreatedbySharpDevelop.
*User:Administrator
*Date:2008/9/11
*Time:下午04:29
*
*/
usingSystem;
usingSystem.IO;
publicclassTooManyItemsException:Exception
{
publicTooManyItemsException():base(@"自己設計的異常信息"){}
}
publicclassExceptionTester
{
publicstaticintMain()
{
ExceptionTestermyExceptionMaker=newExceptionTester();
try
{
myExceptionMaker.GenerateException(5);
}
catch(Exceptione)
{
Console.WriteLine(e.Message);
}
finally
{
Console.WriteLine("FinallyfromMain.");
}
return0;
}
voidGenerateException(intiterations)
{
intmySize=3;
byte[]myStream=newbyte[mySize];
StreamWritersw=newStreamWriter("aa.txt");
try
{
if(iterations>myStream.Length)
{
thrownewTooManyItemsException();
}
for(byteb=0;b<iterations;b++)
{
sw.WriteLine("Byte{0}:{1}",b+1,b);
myStream[b]=b;
}
}
finally
{
Console.WriteLine("FinallyfromGenerateException.");
sw.WriteLine("Close");
sw.Close();
}
}
}
