Refer below code.

HTML

<asp:GridView runat="server" ID="gvDetails"></asp:GridView>
<table>
    <tr>
        <td>ChallanNo:<asp:TextBox runat="server" ID="txtChallanNo" /></td>
    </tr>
    <tr>
        <td>TruckNo:<asp:TextBox runat="server" ID="txtTruckNo" /></td>
    </tr>
    <tr>
        <td>Lrdate:<asp:TextBox runat="server" ID="txtLrdate" /></td>
    </tr>
</table>

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    string result = System.IO.File.ReadAllText(Server.MapPath("~/json.json"));
    string array = ((Newtonsoft.Json.Linq.JToken)Newtonsoft.Json.JsonConvert.DeserializeObject(result)).Root["data"].ToArray()[0].ToString();
    data[] data = Newtonsoft.Json.JsonConvert.DeserializeObject<data[]>(array);
    this.gvDetails.DataSource = data[0].ChallanEntries;
    this.gvDetails.DataBind();
    txtChallanNo.Text = data[0].ChallanNo;
    txtTruckNo.Text = data[0].TruckNo;
    txtLrdate.Text = data[0].Lrdate.ToString("dd/MM/yyyy");
}
public class data
{
    public int Id { get; set; }
    public string FromBranchCode { get; set; }
    public string ChallanNo { get; set; }
    public DateTime Lrdate { get; set; }
    public string RoyaltyPassNo { get; set; }
    public string VehicleNo { get; set; }
    public string TruckNo { get; set; }
    public string Total { get; set; }
    public string ToBranchCode { get; set; }
    public string ToBranchName { get; set; }
    public string Station { get; set; }
    public string Package { get; set; }
    public double Freight { get; set; }
    public string CompanyName { get; set; }
    public string CustFullName { get; set; }
    public string BranchName { get; set; }
    public string ConsignorName { get; set; }
    public string ConsigneeName { get; set; }
    public DateTime RecieveDate { get; set; }
    public DateTime DeliveryDate { get; set; }
    public DateTime AuditedDate { get; set; }
    public string Status { get; set; }
    public string AdminName { get; set; }
    public string GrossWeight { get; set; }
    public string CNType { get; set; }
    public string GodownName { get; set; }
    public string PODFileName { get; set; }
    public string UserType { get; set; }
    public string DelPersonName { get; set; }
    public string MrNo { get; set; }
    public string IsClosingEntry { get; set; }
    public string BookingTerms { get; set; }
    public string CrossingVehicle { get; set; }
    public string PartyInvoiceNo { get; set; }
    public List<ChallanEntries> ChallanEntries { get; set; }
    public string MachineQty { get; set; }
    public string StationAddress { get; set; }
    public string FromStation { get; set; }
    public string PrivateMarkSingle { get; set; }
    public string LRCarrierType { get; set; }
    public string TrackingDetail { get; set; }
    public string Dscc_ApprovalByText { get; set; }
}
public class ChallanEntries
{
    public string BranchCode { get; set; }
    public string ChallanNo { get; set; }
    public string BranchName { get; set; }
    public DateTime ChallaDate { get; set; }
    public string Station { get; set; }
    public string ChlType { get; set; }
    public string Rate { get; set; }
    public string TotalWeight { get; set; }
    public string VehNo { get; set; }
    public string Frieght { get; set; }
    public string BrokerName { get; set; }
    public double Total { get; set; }
    public string Balance { get; set; }
    public DateTime TransitDate { get; set; }
    public string TotalPkgs { get; set; }
    public string CarrierType { get; set; }
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    Dim result As String = IO.File.ReadAllText(Server.MapPath("~/json.json"))
    Dim array As String = (CType(Newtonsoft.Json.JsonConvert.DeserializeObject(result), Newtonsoft.Json.Linq.JToken)).Root("data").ToArray()(0).ToString()
    Dim data As data() = Newtonsoft.Json.JsonConvert.DeserializeObject(Of data())(array)
    Me.gvDetails.DataSource = data(0).ChallanEntries
    Me.gvDetails.DataBind()
    txtChallanNo.Text = data(0).ChallanNo
    txtTruckNo.Text = data(0).TruckNo
    txtLrdate.Text = data(0).Lrdate.ToString("dd/MM/yyyy")
End Sub

Public Class data
    Public Property Id As Integer
    Public Property FromBranchCode As String
    Public Property ChallanNo As String
    Public Property Lrdate As DateTime
    Public Property RoyaltyPassNo As String
    Public Property VehicleNo As String
    Public Property TruckNo As String
    Public Property Total As String
    Public Property ToBranchCode As String
    Public Property ToBranchName As String
    Public Property Station As String
    Public Property Package As String
    Public Property Freight As Double
    Public Property CompanyName As String
    Public Property CustFullName As String
    Public Property BranchName As String
    Public Property ConsignorName As String
    Public Property ConsigneeName As String
    Public Property RecieveDate As DateTime
    Public Property DeliveryDate As DateTime
    Public Property AuditedDate As DateTime
    Public Property Status As String
    Public Property AdminName As String
    Public Property GrossWeight As String
    Public Property CNType As String
    Public Property GodownName As String
    Public Property PODFileName As String
    Public Property UserType As String
    Public Property DelPersonName As String
    Public Property MrNo As String
    Public Property IsClosingEntry As String
    Public Property BookingTerms As String
    Public Property CrossingVehicle As String
    Public Property PartyInvoiceNo As String
    Public Property ChallanEntries As List(Of ChallanEntries)
    Public Property MachineQty As String
    Public Property StationAddress As String
    Public Property FromStation As String
    Public Property PrivateMarkSingle As String
    Public Property LRCarrierType As String
    Public Property TrackingDetail As String
    Public Property Dscc_ApprovalByText As String
End Class

Public Class ChallanEntries
    Public Property BranchCode As String
    Public Property ChallanNo As String
    Public Property BranchName As String
    Public Property ChallaDate As DateTime
    Public Property Station As String
    Public Property ChlType As String
    Public Property Rate As String
    Public Property TotalWeight As String
    Public Property VehNo As String
    Public Property Frieght As String
    Public Property BrokerName As String
    Public Property Total As Double
    Public Property Balance As String
    Public Property TransitDate As DateTime
    Public Property TotalPkgs As String
    Public Property CarrierType As String
End Class