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How to Create & Download the Json in Business Central : Using Json Datatypes

Hi Experts,

In this article i am learning & sharing with you guys that how to Create Json structure in Business Central.
In this example, i am creating Json structure from Customer table and store that Json file in local system.
Codeunit 50101 "Json Write"
{
    trigger OnRun()
    var
        Customer_Rec: Record Customer;
        JObject_Cust: JsonObject;
        JObject_Address: JsonObject;
        JArray_Address: JsonArray;
        JObject_PostingGroup: JsonObject;
        JArray_PostingGroup: JsonArray;
        RecTempBlob: Record TempBlob;
        InStr: InStream;
        OutStr: OutStream;
        FileName: Text;
        Result: Text;

    begin
        // Code to Create Json file Structure_Start
        Customer_Rec.get('10000');
        JObject_Cust.Add('No.', Customer_Rec."No.");
        JObject_Cust.Add('Name', Customer_Rec.Name);
        JObject_Address.Add('Address', Customer_Rec.Address);
        JObject_Address.Add('City', Customer_Rec.City);
        JObject_Address.Add('Country', Customer_Rec."Country/Region Code");
        JArray_Address.Add(JObject_Address);
        JObject_Cust.Add('Address Details', JArray_Address);
        JObject_PostingGroup.Add('GBPG', Customer_Rec."Gen. Bus. Posting Group");
        JObject_PostingGroup.Add('CPG', Customer_Rec."Customer Posting Group");
        JArray_PostingGroup.Add(JObject_PostingGroup);
        JObject_Cust.Add('Posting Groups', JArray_PostingGroup);
        // Code to Create Json file Structure_End

        //Code to download the Json File_Start
        FileName := 'Customer.Json';
        RecTempBlob.Blob.CreateInStream(InStr);
        RecTempBlob.Blob.CreateOutStream(OutStr);
        JObject_Cust.WriteTo(OutStr);
        OutStr.WriteText(Result);
        InStr.ReadText(Result);
        DownloadFromStream(InStr, 'Download Json File', '', '', FileName);
        //Code to download the Json File_End
    end;
}

Action button is created on Customer List Page "Create Json" to run the above Codeunit.

pageextension 50106 "Customer List Ext" extends "Customer List"
{
    layout
    {
        // Add changes to page layout here
    }

    actions
    {
        // Add changes to page actions here
        addlast(Processing)
        {
            action("Create Json")
            {
                ApplicationArea = All;
                Image = ExportFile;

                trigger OnAction()
                Var
                    JsonWrite_CU: Codeunit "Json Write";
                    ConfirmMsg: Label 'Do you want to download the Json File?';
                    ElseMsg: Label 'Process Cancelled.';
                begin
                    if Confirm(ConfirmMsg, false) then
                        JsonWrite_CU.Run()
                    else
                        Message(ElseMsg);
                end;
            }
        }
    }
}

Output:- After selecting the path and align the Json data, it looks like:


Thanks for Reading!!
#Follow #KunalBlog #Microsoft #BusinessCentral
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