JSON deserialization Error: Additional text found in JSON string after finishing deserializing object

Hi omagebi,

Refer below sample.

Use datatable instead of dataset.

HTML

<asp:TextBox runat="server" TextMode="MultiLine" ID="txtJSON" />
<asp:Button Text="Submit" runat="server" OnClick="Convert" />
<br />
<asp:GridView ID="gvCustomers" runat="server" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField DataField="CustomerId" HeaderText="CustomerId" />
        <asp:BoundField DataField="Name" HeaderText="Name" />
        <asp:BoundField DataField="Country" HeaderText="Country" />
        <asp:BoundField DataField="Address" HeaderText="Address" />
    </Columns>
</asp:GridView>

Namespaces

C#

using System.Data;
using Newtonsoft.Json;

VB.Net

Imports System.Data
Imports Newtonsoft.Json

Code

C#

protected void Convert(object sender, EventArgs e)
{
    string json = txtJSON.Text.Trim();
    DataTable dt = JsonConvert.DeserializeObject<DataTable>(json);
    this.gvCustomers.DataSource = dt;
    this.gvCustomers.DataBind();
}

VB.Net

Protected Sub Convert(ByVal sender As Object, ByVal e As EventArgs)
    Dim json As String = txtJSON.Text.Trim()
    Dim dt As DataTable = JsonConvert.DeserializeObject(Of DataTable)(json)
    Me.gvCustomers.DataSource = dt
    Me.gvCustomers.DataBind()
End Sub

Screenshot