Question

In my example code below i would like to replace the item in the dictionary with a new item or assign new values to that item. How can i do this?

This is my code:

dynamic data = jss.Deserialize<dynamic>(jsonText);

foreach (KeyValuePair<string,object> item in data["typeData"])
{
    if(item.Key == "somevalue")
        {
            item = new KeyValuePair<string,object>();
        }                               
}

I’m getting:

Cannot assign to ‘item’ because it is a ‘foreach iteration variable’

There must be a work-around.

Answer 1

Depends on what you want. Do you just need to override the value? I assume so because replacing the key and value would be a very different operation (remove one item and insert another)

just iterate over the keys instead of the collection (Assuming it’s a dictionary):

dynamic data = jss.Deserialize<dynamic>(jsonText)["typeData"];

foreach (string key in data.Keys)
{
    if(key == "somevalue")
        {
            data[key] = ...;
        }                               
}

if there’s no keys property you can substitute that part with (assuming that at least there’s an indexer)

foreach (string key in data.Select(pair=>pair.Key)){
  ...
}