replace key field in dictionary data type

Question

@Jack J Jun , sir in the same excel project, I have used a dictionary type as advised but later now after filling it , i want to change some of its key name in key, value string. The documentation says we cant change it . Can you provide some code to accomplish this . Thanks in advance .

 Dictionary<string, List<string>> dic = new Dictionary<string, List<string>>();  
        for (int i = 0; i < list1.Count; i++)  
        {  
            string key = list1[i];  
            List<string> l = new List<string>();  
            for (var item=1;item<listnew.Count;item++) // deliberately starts from 1   
            {  
                if (listnew[item][0].ToString().StartsWith(key))  
                {  
                    l.Add(listnew[item][0].ToString());  
                }  

            }  
            dic.Add(key, l);  
        }

Answer 1

Hi @ankit goel ,
Since you can't change the key of an existing dictionary entry. You'll have to remove/add using a new key.
You can refer to the code below.

            while (dic.ContainsKey("1")){  
                dic.Add("a", dic["1"]);  
                dic.Remove("1");  
            }  

Best Regards.
Jiachen Li

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