private void SetBackgroundJobCredentials(IBackgroundCopyJob backgroundCopyJob)
{
程序报错点,错误内容为:指定的转换无效
IBackgroundCopyJob2 copyJob = (IBackgroundCopyJob2) backgroundCopyJob;
...
}Specified cast not valid
{
程序报错点,错误内容为:指定的转换无效
IBackgroundCopyJob2 copyJob = (IBackgroundCopyJob2) backgroundCopyJob;
...
}Specified cast not valid
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