在C#中处理来自非托管dll的异常

Question

我有用C#编写的以下函数

public static string GetNominativeDeclension(string surnameNamePatronimic)
{
    if(surnameNamePatronimic == null) 
       throw new ArgumentNullException("surnameNamePatronimic");


IntPtr[] ptrs = null;
try
{
    ptrs = StringsToIntPtrArray(surnameNamePatronimic);

    int resultLen = MaxResultBufSize;
    int err = decGetNominativePadeg(ptrs[0], ptrs[1], ref resultLen);
    ThrowException(err);
    return IntPtrToString(ptrs, resultLen);
}
catch
{
    return surnameNamePatronimic;
}
finally
{
    FreeIntPtr(ptrs);
}


}


函数decGetNominativePadeg在非托管dll中 

[DllImport("Padeg.dll", EntryPoint = "GetNominativePadeg")]
private static extern Int32 decGetNominativePadeg(IntPtr surnameNamePatronimic,
    IntPtr result, ref Int32 resultLength);


并抛出异常:
 Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

C#代码中的catch实际上并没有捕获它.为什么？如何处理这个异常？

谢谢您的帮助!

    

Answer 1

"CLR不再为托管代码中的异常处理程序提供损坏的进程状态的异常."

.NET Framework 4迁移问题.

只需将其添加到配置文件:http: //msdn.microsoft.com/en-us/library/dd638517.aspx