Send and retrieve data from database based on GridView cell value with HyperLink in Other Page using C# and VB.Net in ASP.Net

Hi edaadura,

Check this example. Now please take its reference and correct your code.

Database

For this example I have used of Northwind database that you can download using the link given below.

Download Northwind Database

HTML

Default

<asp:GridView ID="GridView1" runat="server" BorderColor="White" BorderWidth="0px"
    AutoGenerateColumns="false" GridLines="None">
    <Columns>
        <asp:TemplateField HeaderText="">
            <ItemTemplate>
                <%# Container.DataItemIndex + 1 %>
            </ItemTemplate>
            <ItemStyle HorizontalAlign="Center" Width="50px" />
        </asp:TemplateField>
        <asp:TemplateField HeaderText="">
            <ItemTemplate>
                <h3 class="h3">
                    <asp:HyperLink ID="label_soalan" runat="server" Text='<%# Eval("Name")%>' NavigateUrl='<%# Eval("EmployeeID","~/Details.aspx?id={0}")%>'></asp:HyperLink></h3>
                <hr />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

Details

<div>
    ID : <asp:Label ID="lblID" runat="server" Text=""></asp:Label>
    <br />
    Country : <asp:Label ID="lblCountry" runat="server" Text=""></asp:Label>
    <br />
    City : <asp:Label ID="lblCity" runat="server" Text=""></asp:Label>
</div>

Namespaces

C#

using System.Configuration;
using System.Data;
using System.Data.SqlClient;

VB.Net

Imports System.Configuration
Imports System.Data
Imports System.Data.SqlClient

Code

C#

Default

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        this.BindGrid();
    }
}

private void BindGrid()
{
    string strcon = ConfigurationManager.ConnectionStrings["ConStr"].ConnectionString;
    using (SqlConnection con = new SqlConnection(strcon))
    {
        using (SqlCommand cmd = new SqlCommand("SELECT EmployeeID,FIrstName+' '+LastName Name,Country FROM Employees", con))
        {
            cmd.CommandType = CommandType.Text;
            using (SqlDataAdapter sda = new SqlDataAdapter())
            {
                sda.SelectCommand = cmd;
                DataTable dt = new DataTable();
                sda.Fill(dt);
                this.GridView1.DataSource = dt;
                this.GridView1.DataBind();
            }
        }
    }
}

Details

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        string strcon = ConfigurationManager.ConnectionStrings["ConStr"].ConnectionString;
        if (Request.QueryString["id"].ToString() != "")
        {
            using (SqlConnection con = new SqlConnection(strcon))
            {
                using (SqlCommand cmd = new SqlCommand("SELECT EmployeeID,Country,City FROM Employees WHERE EmployeeID=@id", con))
                {
                    con.Open();
                    cmd.Parameters.AddWithValue("@id", Request.QueryString["id"].ToString());
                    cmd.CommandType = CommandType.Text;
                    SqlDataReader sdr = cmd.ExecuteReader();
                    sdr.Read();
                    lblID.Text = sdr["EmployeeID"].ToString();
                    lblCountry.Text = sdr["Country"].ToString();
                    lblCity.Text = sdr["City"].ToString();
                    con.Close();
                }
            }
        }
    }
}

VB.Net

Default

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Me.BindGrid()
    End If
End Sub

Private Sub BindGrid()
    Dim strcon As String = ConfigurationManager.ConnectionStrings("ConStr").ConnectionString
    Using con As SqlConnection = New SqlConnection(strcon)
        Using cmd As SqlCommand = New SqlCommand("SELECT EmployeeID,FIrstName+' '+LastName Name,Country FROM Employees", con)
            cmd.CommandType = CommandType.Text
            Using sda As SqlDataAdapter = New SqlDataAdapter()
                sda.SelectCommand = cmd
                Dim dt As DataTable = New DataTable()
                sda.Fill(dt)
                Me.GridView1.DataSource = dt
                Me.GridView1.DataBind()
            End Using
        End Using
    End Using
End Sub

Details

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Dim strcon As String = ConfigurationManager.ConnectionStrings("ConStr").ConnectionString
        If Request.QueryString("id").ToString() <> "" Then
            Using con As SqlConnection = New SqlConnection(strcon)
                Using cmd As SqlCommand = New SqlCommand("SELECT EmployeeID,Country,City FROM Employees WHERE EmployeeID=@id", con)
                    con.Open()
                    cmd.Parameters.AddWithValue("@id", Request.QueryString("id").ToString())
                    cmd.CommandType = CommandType.Text
                    Dim sdr As SqlDataReader = cmd.ExecuteReader()
                    sdr.Read()
                    lblID.Text = sdr("EmployeeID").ToString()
                    lblCountry.Text = sdr("Country").ToString()
                    lblCity.Text = sdr("City").ToString()
                    con.Close()
                End Using
            End Using
        End If
    End If
End Sub

Screenshot