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How to check if a variable is an IEnumerable of some sort

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一生所求
一生所求 2021-02-01 12:47

basically I\'m building a very generic T4 template and one of the things I need it to do is say print variable.ToString(). However, I want it to evaluate lists and

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  • 没有蜡笔的小新
    没有蜡笔的小新 (楼主)
    2021-02-01 13:12

    If you don't care about object type and you are not in Generic method in C# 7.0+

            if (item is IEnumerable enumVar)
        {
            foreach (var e in enumVar)
            {
                    e.ToString();

            }
        }



    In C# < 7.0
    


            if (item is IEnumerable)
        {
            var enumVar = item as IEnumerable;
            foreach (var e in enumVar)
            {
                e.ToString();

            }
            //or you can cast an array to set values, 
            //since IEnumerable won't let you, unless you cast to IList :) 
            //but array version here 
            //https://stackoverflow.com/a/9783253/1818723
        }

    
    
             
    
                                                        
    
            
            
    
              
                
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