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How can I deserialize JSON {name, value} in C#?

How can i parse JSON string in c# Get error Cannot deserialize the current JSON object (e.g. {“name”:“value”})

  • I tried the following code but am not able to parse json sting. When I am parsing I am getting this error: Cannot deserialize the current JSON object (e.g. {“name”:“value”}) into type 'System.Collections.Generic.List`1 HiddenField1.Value = "{\"AlertDataList\":[{\"header\":\"YTD Noresp 04/01/2010 &#45; 01/31/2011 Created On 10/02/2013\",\"type\":\"High \",\"NoResponse\":\"0\",\"NoResponsePct\":\" 0.00&#37;\",\"Response\":\"1\",\"ResponsePct\":\" 100.00&#37;\",\"All\":\"1\",\"accountperiodid\":\"11306\",\"navigateUrl\":\"windowpane://Insights.exe/HCI.Insights.Windows.Forms.Converted.FormFinalert…&responseType=NoResp&accountPeriodId=11306&alertType=High&hasResponses=All\",\"navigateResponsesUrl\":\"windowpane://Insights.exe/HCI.Insights.Windows.Forms.Converted.FormFinalert…responseType=NoResp&accountPeriodId=11306&alertType=High&hasResponses=Resp\",\"navigateNoResponsesUrl\":\"windowpane://Insights.exe/HCI.Insights.Windows.Forms.Converted.FormFinalert…D&responseType=NoResp&accountPeriodId=11306&alertType=High&hasResponses=No Resp\"},{\"header\":\"YTD Noresp 04/01/2010 &#45; 01/31/2011 Created On 10/02/2013\",\"type\":\"Medium\",\"NoResponse\":\"0\",\"NoResponsePct\":\" 0.00&#37;\",\"Response\":\"1\",\"ResponsePct\":\" 100.00&#37;\",\"All\":\"1\",\"accountperiodid\":\"11306\",\"navigateUrl\":\"windowpane://Insights.exe/HCI.Insights.Windows.Forms.Converted.FormFinalert…esponseType=NoResp&accountPeriodId=11306&alertType=Medium&hasResponses=All\",\"navigateResponsesUrl\":\"windowpane://Insights.exe/HCI.Insights.Windows.Forms.Converted.FormFinalert…sponseType=NoResp&accountPeriodId=11306&alertType=Medium&hasResponses=Resp\",\"navigateNoResponsesUrl\":\"windowpane://Insights.exe/HCI.Insights.Windows.Forms.Converted.FormFinalert…responseType=NoResp&accountPeriodId=11306&alertType=Medium&hasResponses=No Resp\"},{\"header\":\"YTD Noresp 04/01/2010 &#45; 01/31/2011 Created On 10/02/2013\",\"type\":\"All\",\"NoResponse\":\"0\",\"NoResponsePct\":\" 0.00&#37;\",\"Response\":\"2\",\"ResponsePct\":\" 100.00&#37;\",\"All\":\"2\",\"accountperiodid\":\"11306\",\"navigateUrl\":\"windowpane://Insights.exe/HCI.Insights.Windows.Forms.Converted.FormFinalert…D&responseType=NoResp&accountPeriodId=11306&alertType=All&hasResponses=All\",\"navigateResponsesUrl\":\"windowpane://Insights.exe/HCI.Insights.Windows.Forms.Converted.FormFinalert…&responseType=NoResp&accountPeriodId=11306&alertType=All&hasResponses=Resp\",\"navigateNoResponsesUrl\":\"windowpane://Insights.exe/HCI.Insights.Windows.Forms.Converted.FormFinalert…TD&responseType=NoResp&accountPeriodId=11306&alertType=All&hasResponses=No Resp\"}]}" public void AlertTable() { List<alertMain> json = JsonConvert.DeserializeObject <List<alertMain>>((HiddenField1.Value).ToString()); } public class alert { [JsonProperty("header")] public string header { get; set; } [JsonProperty("type")] public string type { get; set; } [JsonProperty("NoResponse")] public string NoResponse { get; set; } [JsonProperty("NoResponsePct")] public string NoResponsePct { get; set; } [JsonProperty("Response")] public string Response { get; set; } [JsonProperty("ResponsePct")] public string ResponsePct { get; set; } [JsonProperty("All")] public string All { get; set; } [JsonProperty("accountperiodid")] public string accountperiodid { get; set; } [JsonProperty("navigateUrl")] public string navigateUrl { get; set; } [JsonProperty("navigateResponsesUrl")] public string navigateResponsesUrl { get; set; } [JsonProperty("navigateNoResponsesUrl")] public string navigateNoResponsesUrl { get; set; } } public class alertMain { [JsonProperty("AlertDataList")] public List<alert> AlertDataList { get; set; } }

  • Answer:

    Try to change hidden field value from HiddenField1.Value = "{\"AlertDataList\":[{...}]}" to HiddenField1.Value = "[{\"AlertDataList\":[{...}]}]"

Himanshu Bisht at Stack Overflow Visit the source

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Other answers

You're deserializing to a List<alertMain>, yet your JSON contains simply one alertMain. Try: alertMain json = JsonConvert.DeserializeObject<alertMain>((HiddenField1.Value).ToString());

mattytommo

Answer from my comment. You are trying to convert List<alertMain>. alertMain already contains a list. Try using just alertMain since it is already containing the list of alerts.

Nikolay Kostov

You need to cast your json into List<IDictionary<string,string>> this will should be work. PFB code. public void AlertTable() { var json = JsonConvert.DeserializeObject<RootObject>((HiddenField1.Value).ToString()); } and you just create a one class like below: public class RootObject { public List<IDictionary<string, string>> AlertDataList { get; set; } }

Mirza Danish Baig

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