C# 如何获取出错的错误所在行数信息 <font color=red>原创</

try
{
    int num = Convert.ToInt32("");  //这一行会报错
}catch(Exception ex)
{
    MessageBox.Show(ex.StackTrace);
}

try
{
    int num = Convert.ToInt32("");
}catch(Exception ex)
{
    MessageBox.Show(ex.StackTrace.Substring(ex.StackTrace.IndexOf("行号"), ex.StackTrace.Length - ex.StackTrace.IndexOf("行号")));
}