如何继续foreach循环

Question

I have the for each loop below and would like to know how i would be able to continue this after an exception has been thrown so that it goes onto the next next array index, and the system doesn't fail.

try
{
//making name array and other checks 
    foreach (string s in namearry)
    {
        var timelineData = oAuthTwitterWrapper.GetMyTimeline(s);
        TwitterData.TimeLineData(timelineData, s, int.Parse(dr["ClientId"].ToString()));
        //  var followersId = oAuthTwitterWrapper.GetFolowersId(s);
        // var loc = oAuthTwitterWrapper.GetFolowersLoc(followersId);
        //  TwitterData.Follower(loc, s);
    }
}
catch(Exception ex)
{
    //logging exception 
}

Answer 1

Ideally i would try to avoid all the exceptions. In your case you can handle the exception within the foreach loop. In the following examples i have added the necessary checks to avoid exception occuring in first place. like this

foreach (string s in namearry)
{
    try
    {
        var timelineData = oAuthTwitterWrapper.GetMyTimeline(s);
        if(timelineData!=null)
        {
             int clientID;
             if(int.TryParse(dr["ClientId"].ToString(), out clientID))
             {
                  TwitterData.TimeLineData(timelineData, s, clientID);            
             }
        }
    }
    catch(Exception exp)
    {
        //do logging here.
    }
}

Answer 2

You cannot, you broke out with an exception, instead move the try/catch inside the loop.

foreach (string s in namearry)
{
    try {
        //making name array and other checks 
        var timelineData = oAuthTwitterWrapper.GetMyTimeline(s);
        TwitterData.TimeLineData(timelineData, s, int.Parse(dr["ClientId"].ToString()));
        //  var followersId = oAuthTwitterWrapper.GetFolowersId(s);
        // var loc = oAuthTwitterWrapper.GetFolowersLoc(followersId);
        //  TwitterData.Follower(loc, s);
    }
    catch(Exception ex) {
        //logging exception 
    }
}

Answer 3

将您的try-catch语句放入循环，并在catch块中使用Continue关键字。

Answer 4

Put the try inside the foreach, rather than outside. Or, if you need it outside, put another one inside, that handles exceptions.

try{
//making name array and other checks, that may trigger exceptions
    foreach (string s in namearry)
    {
        try
        {
            var timelineData = oAuthTwitterWrapper.GetMyTimeline(s);
            TwitterData.TimeLineData(timelineData, s, int.Parse(dr["ClientId"].ToString()));
            //  var followersId = oAuthTwitterWrapper.GetFolowersId(s);
            // var loc = oAuthTwitterWrapper.GetFolowersLoc(followersId);
            //  TwitterData.Follower(loc, s);
        }
        catch(Exception ex)
        {
            //logging exception: this will override the outer handler, which will not be called.
        }
    }
}
catch(Exception ex){
    //logging exception
    //exceptions raised before entering the foreach are handled here
}