What is a simple way to log all items in a list using log4net (or other logging frameworks)?

Question

I usually have methods returning IList. I need to log the result coming back in this list.

Is there a better way than looping on the items inside the list and printing them one by one like this?

foreach(string productName in productsNames)
            {
                prodsNames.Append(productName + " ");
            }
Logger.Debug("Loading data for Producers: " + prodsNames);

is there some way of making this easier?

score 1 · Accepted Answer · edited May 23 '17 at 12:27

1

I would write a wrapper for log4net that exposes a method like this:

void Debug(string message, IList elements);

The implementation could look be as follows (some details are omitted):

public Debug(string message, IList elements)
{
    // this.Logger returns a reference to ILog object
    if (this.Logger.IsDebugEnabled)
    {            
        string logMessage;
        // build the string that you want to write to the log
        this.Logger.Debug(logMessage);      
    }
}

That is just an example: You can design your interface the way that is best suited for you.

Here you can find some ideas what a wrapper might look like.

edited May 23 '17 at 12:27

Community

1
1

answered Aug 08 '10 at 10:38

Stefan Egli

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maybe also consider this, if you write a wrapper: http://stackoverflow.com/questions/2049992/when-using-wrapper-how-to-preserve-class-and-method-name-for-log4net-to-log/3448439#3448439 – Stefan Egli Aug 11 '10 at 18:57

score 1 · Answer 2 · answered Aug 10 '10 at 12:02

1

Serialize the list to XML, log the XML string.

answered Aug 10 '10 at 12:02

Ashley

129
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Thanks, I've added serialized my list into json before I pass it to my dynamic object and then to serilog and it worked. It was just a basic string list I was hoping serilog would handle it but seems like it's not sadly. – Shino Lex Apr 06 '22 at 08:14

score 1 · Answer 3 · answered Oct 25 '18 at 10:47

1

Is there any reason to not to use string.Join()?

Logger.Debug("Loading data for Producers: " + string.Join(" ", productsNames));

answered Oct 25 '18 at 10:47

Anubis

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This definitely works, but has the side effect of spending CPU cycles/heap allocations on the formatting, even if the debug logging level isn't enabled (whether this matters depends on the perf requirements of the situation, of course :-)) – Nicholas Blumhardt Oct 25 '18 at 21:37

score 1 · Answer 4 · answered Oct 25 '18 at 15:32

1

With NLog and Serilog you can do this:

Logger.Debug("Loading data for Producers: {producers}", prodsNames);

What is a simple way to log all items in a list using log4net (or other logging frameworks)?

4 Answers4