Add Duplicates keys to NameValueCollection
.net, c#, namevaluecollection
Solution
This is the expected behaviour - see the documentation:
If the specified key already exists in the target NameValueCollection instance, the specified value is added to the existing comma-separated list of values in the form "value1,value2,value3". The values are associated with the same key in the target NameValueCollection instance.
Problem
I have read that NameValueCollection allows for duplicate keys to be added, however this does not seem to be the case when I try to use it. My Code ``` using (var wb = new WebClient()) { var data = new NameValueCollection(); var sourceData = (List<Dictionary<string, object>>)dic["mapData"]; var countSource = sourceData.Count; foreach (var item in (List<Dictionary<string, object>>)dic["mapData"]) { data.Add("pp", item["Latitude"].ToString() + "," + item["Longitude"].ToString()); } var dataCount = data.Count; var response = wb.UploadValues(@"http://dev.virtualearth.net/REST/V1/Imagery/Map/road/?mapArea=" + swLat.ToString() + "," + swLong + "," + neLat + "," + neLong + "&mapSize=800,600&key=" + key, "POST", data); return this.LargeJson(new { imageData = CreateBase64Image(response) }); } ``` What I am observing my sourceData contains 36 items I am iterating through sourceData and adding items to my NameValueCollection data and add items with the same key "pp" I was expecting to have 36 items in my data NameValueCollection, but I am only getting 1 and all of my values get appended to the same key. What am I missing ?