Hello to all,

I've found out the reason for the issue in your source code.

In GridModel.DataBindInternal()

// extracting parameters for POST requests
			if (HttpContext.Current != null && HttpContext.Current.Request.HttpMethod == "POST")
			{
				Stream req = this.HtmlHelper != null ? this.HtmlHelper.ViewContext.HttpContext.Request.InputStream :
					HttpContext.Current.Request.InputStream;
				req.Seek(0, SeekOrigin.Begin);
				string json = new StreamReader(req).ReadToEnd();
				if ((json.StartsWith("{") && json.EndsWith("}")) ||
					(json.StartsWith("[") && json.EndsWith("]")))
				{
					var dict = JsonConvert.DeserializeObject<Dictionary<string, string>>(json);
					if (dict != null)
					{
						queryString = dict.Aggregate(new NameValueCollection(queryString),
							(seed, current) => {
								seed.Add(current.Key, current.Value);
								return seed;
							});
					}
				}
			}

This line excpects that the whole payload is only a key/val pair of strings ¯\(°_o)/¯ 

var dict = JsonConvert.DeserializeObject<Dictionary<string, string>>(json);

But i need to consume complex types in my middleware that I pass with the POST-Payload

Hello Deyan,

thank you for the information.

Now it is nearly one year later and I tried again tu upgrade my project vom 17.2 to the latest 20.1

but I have still the same problem :-(

I figured out the source of the issue:

- using a POST-Request

- you have an integer array in your payload

--> it does not matter how your GridModel looks like.

In GridModel.DataBind() the payload of the request is somehow parsed and that fails.

Example:

Payload from the POST-Request

{"fromDate":"2020-07-15T14:05:59.420Z","tillDate":"2020-07-15T14:05:59.427Z","mandantIds":[13],"filterDisplayText":"15.07.2020 - 15.07.2020 IMPULS KÜCHEN GMBH - 59916 BRILON","reportId":1}

Error-msg:

Unexpected character encountered while parsing value: [. Path 'mandantIds', line 1, position 91.

Position 91 is exact the where first bracket starts [13]

For this Example I have changed my GridModel to something simple:

public static GridModel getGridModel(ControllingReport report, ReportRequestObject request)
        {
           
            GridModel gridModel = new GridModel();
            gridModel.Height = "100%";
            gridModel.Columns.Add(new GridColumn("Product Name", "Name", "string", "300px"));
            gridModel.DataSource = new  List<string>{"1", "2" };

            return gridModel;
        }

Please investigate again in this issue.

Thank you and kind regards

Karol 

Hello Vasil,

is there any solution coming or any workaround?

Kind regards,

Bart

Hello Marcia,

After further testing of your sample, I have opened a development issue with an ID: 264960. In order to follow the progress of this issue I've also created a private case for you, with an ID: CAS-202997-B9C2N5.

You can find the case by going to your account on our web site, and then to the "Support activity" tab.

Also, you can view the status of the development issue connected to that case by selecting the "Development Issues" tab when viewing this case.

Please let me know if you have some further questions.