Introduction
This article gives an explanation about how to convert JSON data into the DataTable or DataSet in asp.net web forms using c# and vb.net and also show you how to convert JSON String to DataTable in ASP.Net and How to deserialized JSON data into Datatable or How to deserialized JSON data into Dataset as well as also show you how to convert JSON to DataTable c# and VB.Net.
In my previous articles, I explained AngularJs Table with Bootstrap 4 in ASP.NET Web Forms and Export JSON Data to Excel/CSV File using AngularJs With Bootstrap and Export Dataset/Datatable to CSV File Using C# and VB.NET as well as Read CSV File In ASP.NET With Example C# and VB.NET and etc.
Requirement
1) Create New Asp.net web form Application with Bootstrap 4.
2) Create JSONData.text file with JSON String.
3) Read JSON String from JSONData.text file and Convert JSON String into Dtatable or DataSet.
4) Bind Datagridview using Dtatable and Display records in the tabular format.
Implementation
Let's start to implement to read JSON string from the text file and convert JSON data into Datatable and Dataset and Bind data table to datagridview step by step.
Step 1: Open Your Visual Studio 2013 or higher versions.
Step 2: Go To File Menu and Create New Project and then Select "ASP.NET Empty Web Site", and Set project path location and Click on Ok. Same as shown in the screen below.
NOTE: Make sure The file extension of your web form is (.aspx)
Step 5: Repeat Step 3 and Add the .text file with name JSONData.text.
JSON String
{
"OrderTable": [
{
"OrderNumber": "CO-00001",
"CustomerName": "Nikunj Satasiya",
"OrderDate": "24/03/2019",
"ProductName": "Laptop-Lenovo",
"Pcs": "1",
"Amount": "35000",
"CGST": "9% (3150.00)",
"SGST": "9% (3150.00)",
"IGST": "0% (0.00)",
"NetAmount": "41300.00"
},
{
"OrderNumber": "CO-00002",
"CustomerName": "Hiren Dobariya",
"OrderDate": "24/03/2019",
"ProductName": "Laptop-Dell",
"Pcs": "1",
"Amount": "45000",
"CGST": "9% (4050.00)",
"SGST": "9% (4050.00)",
"IGST": "0% (0.00)",
"NetAmount": "53100.00"
},
{
"OrderNumber": "CO-00003",
"CustomerName": "Vivek Ghadiya",
"OrderDate": "24/03/2019",
"ProductName": "TV-MI",
"Pcs": "1",
"Amount": "13500",
"CGST": "9% (540.00)",
"SGST": "9% (540.00)",
"IGST": "0% (0.00)",
"NetAmount": "14580.00"
}
],
"CompanyTable": [
{
"CompanyID": "C-0001",
"CompanyName": "Lenovo",
"Branch": "Surat"
},
{
"CompanyID": "C-0001",
"CompanyName": "Dell",
"Branch": "Rajkot"
},
{
"CompanyID": "C-0003",
"CompanyName": "MI",
"Branch": "Jamnagar"
}
]
}
Step 6: if you didn't have a reference of newtonsoft.json then you need to add newtonsoft.json from the NuGet Manager. and for that Go to Tools >> NuGet Package Manager and click on Package Manager console as shown in the screen below.
PM> Install-Package Newtonsoft.Json
Step 8: After successful installation of the package you have to add the reference Newtonsoft.Json in your created web form (Json-to-Datatable-Dataset.aspx.cs) file.
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" /> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>Step 10: Now you have to write the following code before end <body> tag, here I have used two datagridview one for display data for Order Details and another for display data for Company Details and also table one button and on click of button we will convert JSON data into Dataset and Datatable and assign data source to appropriate datagridview and display record in tabular format as per given requirement.
<form id="form1" runat="server"> <div class=" container card"> <br /> <h2>Order Detail</h2> <asp:GridView ID="grdOrderDetails" runat="server" CssClass="table table-bordered"></asp:GridView> <h2>Company Detail</h2> <asp:GridView ID="grdCompanyDetails" runat="server" CssClass="table table-bordered"></asp:GridView> <br /> <div> <asp:Button ID="btnConvert" runat="server" CssClass="btn btn-primary" Text="Convert Json to Datatable & Dataset" OnClick="btnConvert_Click" /> </div> <br /> </div> </form>Step 11: Then after, You have to open cs file of your web form (Json-to-Datatable-Dataset.aspx.cs) and you need to add the following required Namespaces.
C#
using System.Data; using System.IO; using Newtonsoft.Json;
VB.NET
imports System.Data imports System.IO imports Newtonsoft.JsonStep 12: Now, You have to write the following code in click event of the btnConvert button.
C#
protected void btnConvert_Click(object sender, EventArgs e) { //Read Json Data From Text File String Json = File.ReadAllText(Server.MapPath("~/JsonData.txt")); //Convert JSON Data to DataTable //DataTable myDataTable = JsonConvert.DeserializeObject<DataTable>(Json); //Convert JSON Data to DataSet DataSet myDataSet = JsonConvert.DeserializeObject<DataSet>(Json); //Check Table Count in DataSet if (myDataSet.Tables.Count > 0) { if (myDataSet.Tables[0].Rows.Count > 0) { //Bind Table[0] into grdOrderDetails GridView grdOrderDetails.DataSource = myDataSet.Tables[0]; grdOrderDetails.DataBind(); } else { grdOrderDetails.Visible = false; } if (myDataSet.Tables[1].Rows.Count > 0) { //Bind Table[1] into grdCompanyDetails GridView grdCompanyDetails.DataSource = myDataSet.Tables[1]; grdCompanyDetails.DataBind(); } else { grdCompanyDetails.Visible = false; } } }
VB.Net
Protected Sub btnConvert_Click(sender As Object, e As EventArgs) Handles btnConvert.Click 'Read Json Data From Text File Dim Json As String = File.ReadAllText(Server.MapPath("~/JsonData.txt")) 'Convert JSON Data to DataTable 'DataSet myDataTable = JsonConvert.DeserializeObject<DataTable>(Json); 'Convert JSON Data to DataSet Dim myDataSet As DataSet = JsonConvert.DeserializeObject(Of DataSet)(Json) 'Check Table Count in DataSet If (myDataSet.Tables.Count > 0) Then If (myDataSet.Tables(0).Rows.Count > 0) Then 'Bind Table[0] into grdOrderDetails GridView grdOrderDetails.DataSource = myDataSet.Tables(0) grdOrderDetails.DataBind() Else grdOrderDetails.Visible = False End If If (myDataSet.Tables(1).Rows.Count > 0) Then 'Bind Table[1] into grdCompanyDetails GridView grdCompanyDetails.DataSource = myDataSet.Tables(1) grdCompanyDetails.DataBind() Else grdCompanyDetails.Visible = False End If End If End Sub
NOTE: In this example I have Convert JSON data into Dataset, If you would like to Convert into Datatable then You Have to use Following code:
//Convert JSON Data to DataTable DataTable myDataTable = JsonConvert.DeserializeObject<DataTable>(Json);Step 13: While you run your application and debug the code you can see the following JSON data and returned Dataset as I have shown in the screen.
Output
Summary
This article gives an explanation about Convert JSON to DataTable or DataSet in Asp.Net Web forms with Bootstrap 4 using C# and Vb.Net with Example.
