### Author:  [@flobernd](https://discuss.elastic.co/u/flobernd)
#### Post date: [April 22, 2024, 10:23am UTC](https://discuss.elastic.co/t/problem-mapping-response-to-model-class-elasticsearch-net-8-13/357896/2 "2024-04-22T10:23:55Z")
Hi @hiilmiee,
this is definitely the correct way:
> [@hiilmiee](#):
>
> var response = await client.SearchAsync(request);
Could you please share the complete callstack and exception message?
Are you sure it's not working with the `ElasticsearchDocs` class you posted? I don't see any `int` property there and I'm a little bit surprised about the exception for that matter.
---
### Author:  [@hiilmiee](https://discuss.elastic.co/u/hiilmiee)
#### Post date: [April 23, 2024, 3:21am UTC](https://discuss.elastic.co/t/problem-mapping-response-to-model-class-elasticsearch-net-8-13/357896/3 "2024-04-23T03:21:15Z")
Hi @flobernd ,
i use
`var response = await client.SearchAsync(request);`
the exception i received is error convert to String instead of Int32. Here's the exception message:
`The server encountered an error processing the request. Please see the [service help page] for constructing valid requests to the service. The exception message is 'The JSON value could not be converted to System.String. Path: $.body | LineNumber: 0 | BytePositionInLine: 224.`
Somehow do i need to manually map the response field to my model ?
---
### Author:  [@flobernd](https://discuss.elastic.co/u/flobernd)
#### Post date: [April 23, 2024, 7:25am UTC](https://discuss.elastic.co/t/problem-mapping-response-to-model-class-elasticsearch-net-8-13/357896/4 "2024-04-23T07:25:03Z")
Hi @hiilmiee,
in your `ElasticsearchDocs` you declare `Body` as `string`, but it seems on the Elasticsearch side, it's stored as something different. In the response you've shown earlier, it seems that `body` is missing from the document payload. Is that always the case?
---
### Author:  [@hiilmiee](https://discuss.elastic.co/u/hiilmiee)
#### Post date: [April 23, 2024, 7:29am UTC](https://discuss.elastic.co/t/problem-mapping-response-to-model-class-elasticsearch-net-8-13/357896/5 "2024-04-23T07:29:29Z")
hi @flobernd ,
some document payload will have `body`, some do not, based on the data ingested using the connector. the `body` data is being extracted using `tesseract-ocr` for image and pdf files
---
### Author:  [@flobernd](https://discuss.elastic.co/u/flobernd)
#### Post date: [April 23, 2024, 2:25pm UTC](https://discuss.elastic.co/t/problem-mapping-response-to-model-class-elasticsearch-net-8-13/357896/6 "2024-04-23T14:25:55Z")
Hi @hiilmiee, do you have an example JSON payload that contains a `body`. I suspect that the type is not compatible with `string`.
---
### Author:  [@hiilmiee](https://discuss.elastic.co/u/hiilmiee)
#### Post date: [April 24, 2024, 1:30am UTC](https://discuss.elastic.co/t/problem-mapping-response-to-model-class-elasticsearch-net-8-13/357896/8 "2024-04-24T01:30:43Z")
Hi @flobernd ,
there are 2 kinds of `body` content
#1
> {
> "\_index": "search-ocr-poc",
> "\_id": "5c87196f-eb64-4b2e-8570-5b41ef1f7759",
> "\_score": 2.591784,
> "\_source": {
> "creation\_time": "2024-03-28T07:39:05Z",
> "size": 1847715,
> "server\_relative\_url": "/sites/COPS/Documents/1.png",
> "id": "5c87196f-eb64-4b2e-8570-5b41ef1f7759",
> "type": "File",
> "title": "1.png",
> "body": "Oops Access denied er Please check with your System Administrator on System Access,, Thank you",
> "\_timestamp": "2024-04-01T04:11:07Z",
> "url": "/sites/COPS/Documents/1.png"
> }
> }
#2
> {
> "\_index": "search-ocr-poc",
> "\_id": "b9d2861f-83c1-4f99-9f20-63dd18c56875",
> "\_score": 1.0311186,
> "_source": {
> "creation\_time": "2024-04-05T04:24:21Z",
> "size": 181624,
> "server\_relative\_url": "/sites/COPS/Documents/Image\_to\_PDF\_20240404\_20.05.03.pdf",
> "id": "b9d2861f-83c1-4f99-9f20-63dd18c56875",
> "type": "File",
> "title": "Image\_to\_PDF\_20240404\_20.05.03.pdf",
> "body": [
> """Page 1 of 2 \* URGEN |! D@LL lechnoiogies Delivery Note uO |[NA ASSY.CROPLNBLDEMFCOAOMUK2 ‘| 1 |_| \>] \_cwam" | NA ASSY.CRD.SCTY.TRPM12,14G Sid St dT id ee ee a fs] Some of the original defective parts from your system must be returned to Dell within 10 business days from the delivery date of the replacement part. Those defective parts that are marked with a \* do not need to be returned. All other parts, without this Insignia, not returned to Dell within 10 business days from the delivery date will have an invoice generated and issued accordingly for the values of the part at Dell current price. Payment of the invoice is required within 30days from the invoice date. To schedule the part collection please follow the return instructions packed with this delivery note. Company Stamp : Issuers Name : Date and Time"""
> ],
> "\_timestamp": "2024-04-05T04:25:38Z",
> "url": "/sites/COPS/Documents/Image\_to\_PDF\_20240404\_20.05.03.pdf"
> }
> }
---
### Author:  [@hiilmiee](https://discuss.elastic.co/u/hiilmiee)
#### Post date: [April 25, 2024, 3:01am UTC](https://discuss.elastic.co/t/problem-mapping-response-to-model-class-elasticsearch-net-8-13/357896/9 "2024-04-25T03:01:04Z")
Hi @flobernd , also how do i map fields like `"_timestamp",` `"editor_id"` ? do my model have to be naming convention ?
e.g
```auto
public Timestamp _timestamp;
public int editor_id
```
---
### Author:  [@flobernd](https://discuss.elastic.co/u/flobernd)
#### Post date: [April 25, 2024, 7:32am UTC](https://discuss.elastic.co/t/problem-mapping-response-to-model-class-elasticsearch-net-8-13/357896/10 "2024-04-25T07:32:11Z")
Hi @hiilmiee,
I can now see the problem. In your CLR class you declare `Body` as `string`. In your data `body` is sometimes a `string`, but sometimes `string[]` (array of string).
To support these kind of complex datatypes in a clean way, you have to implement a [custom converter](https://learn.microsoft.com/en-us/dotnet/standard/serialization/system-text-json/converters-how-to?pivots=dotnet-8-0).
An alternative would be to declare `Body` as [JsonElement](https://learn.microsoft.com/en-us/dotnet/api/system.text.json.jsonelement?view=net-8.0) and inspect its properties to parse the contained value as `string` or `string[]`, depending on the token type.
> [@hiilmiee](#):
>
> also how do i map fields like `"_timestamp",` `"editor_id"` ? do my model have to be naming convention ?
You can use the [JsonPropertyName](https://learn.microsoft.com/en-us/dotnet/standard/serialization/system-text-json/customize-properties?pivots=dotnet-8-0) attribute on your properties to make sure they are matching the name in your model.
---
### Author:  [@hiilmiee](https://discuss.elastic.co/u/hiilmiee)
#### Post date: [May 3, 2024, 10:00am UTC](https://discuss.elastic.co/t/problem-mapping-response-to-model-class-elasticsearch-net-8-13/357896/11 "2024-05-03T10:00:37Z")
Hi @flobernd , thanks for the tips. somehow i just changed my data `body` to be all `string[]`, so will not have any issue. Anyway, are there any way for me to manually map data to my model ? for example my body got this
```auto
{
"_index": "search-search-ntlm",
"_id": "ae7be893-6ced-4b0c-9230-b6bc168dcddd",
"_score": 1,
"_source": {
"creation_time": "2023-12-26T13:55:14Z",
"file_name": "",
"editor_id": 1073741823,
"type": "list_item",
"title": "All Draft Documents",
"url": "https://hostname/sites/test/Reports%20List/DispForm.aspx?ID=5&Source=https://hostname/sites/COPS/Reports%20List/AllItems.aspx&ContentTypeId=0x01009EC04F25E7BD464D9978DF8AB3448A9D",
"size": 0,
"id": "ae7be893-6ced-4b0c-9230-b6bc168dcddd",
"author_id": 1073741823,
"_timestamp": "2023-12-26T13:55:14Z",
"_allow_access_control": [
"login_name:SHAREPOINT\\system",
"email:test02@test.com",
"login_name:domain\\testuser01",
"login_name:domain\\testuser02",
"user_id:1",
"login_name:domain\\test01",
"email:sample1@test.com",
"user_id:22",
"user_id:1073741823",
"email:officer01@test.com",
"email:sample2@test.com",
"login_name:domain\\spsaccount",
"login_name:domain\\test02",
"user_id:20",
"user_id:21",
"user_id:17"
]
}
}
```
and i would like to map the `_allow_access_control` seperately to my model attribute `str email`, `str login_name`, `int user_id` seperately
example model class:
```auto
namespace Model
{
public class ElasticsearchDocs
{
public string Id { get; set; }
public string Title { get; set; }
public string Url { get; set; }
public string Body { get; set; }
public string Email { get; set; }
public string LoginName { get; set; }
public int UserID { get; set; }
}
}
```
---
### Author:  [@hiilmiee](https://discuss.elastic.co/u/hiilmiee)
#### Post date: [May 20, 2024, 6:43am UTC](https://discuss.elastic.co/t/problem-mapping-response-to-model-class-elasticsearch-net-8-13/357896/12 "2024-05-20T06:43:19Z")
Hi @flobernd , if i declare my `Body` as `JsonElement`, does this mean i have to manually mapped all other elements ? means i cannot use this line ?
`var response = await client.SearchAsync(request);`
---
### Author:  [@hiilmiee](https://discuss.elastic.co/u/hiilmiee)
#### Post date: [May 21, 2024, 3:58pm UTC](https://discuss.elastic.co/t/problem-mapping-response-to-model-class-elasticsearch-net-8-13/357896/13 "2024-05-21T15:58:42Z")
Hi, anyone willing to help here ? been stuck. trying to do what @flobernd suggested, which is declare Body as JsonElement. I get up to this point:
```auto
var response = await client.SearchAsync(request);
var stringResponse = JsonConvert.SerializeObject(response, Formatting.Indented);
using(JsonDocument doc = JsonDocument.Parse(stringResponse))
{
JsonElement ele = doc.RootElement;
}
```
I cannot seem to find the `body` and any response in JSON format as this example:
> {
> "\_index": "search-ocr-poc",
> "\_id": "5c87196f-eb64-4b2e-8570-5b41ef1f7759",
> "\_score": 2.591784,
> "\_source": {
> "creation\_time": "2024-03-28T07:39:05Z",
> "size": 1847715,
> "server\_relative\_url": "/sites/COPS/Documents/1.png",
> "id": "5c87196f-eb64-4b2e-8570-5b41ef1f7759",
> "type": "File",
> "title": "1.png",
> "body": "Oops Access denied er Please check with your System Administrator on System Access,, Thank you",
> "\_timestamp": "2024-04-01T04:11:07Z",
> "url": "/sites/COPS/Documents/1.png"
> }
---
### Author:  [@hiilmiee](https://discuss.elastic.co/u/hiilmiee)
#### Post date: [May 28, 2024, 7:11am UTC](https://discuss.elastic.co/t/problem-mapping-response-to-model-class-elasticsearch-net-8-13/357896/14 "2024-05-28T07:11:36Z")
Hi @flobernd , would u be able to help me here please ? i tried writing a custom converter but was not able to because of this `Utf8JsonReader is obsolete. Types with embedded reference are not support in this versino of your compiler`
below are my snippet:
```auto
public class SingleStringToListStringConverter : JsonConverter>
{
public override List Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
{
using (JsonDocument doc = JsonDocument.ParseValue(ref reader))
{
string singleString = doc.RootElement.GetString();
return singleString != null ? new List { singleString } : null;
}
}
public override void Write(Utf8JsonWriter writer, List value, JsonSerializerOptions options)
{
throw new NotImplementedException();
}
}
```
appreciate your response. Thank you