Transfer data from GridView to another page GridView in ASP.Net

Hi Prati23@,

I have created sample code which fullfill your requirement.

HTML

Default.aspx page

<form id="form1" runat="server">
<div>
    <asp:GridView ID="gvRecord" runat="server" AutoGenerateColumns="false">
        <Columns>
            <asp:TemplateField HeaderText="Action">
                <ItemTemplate>
                    <asp:CheckBox ID="checkRecord" runat="server" />
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="CustomerId">
                <ItemTemplate>
                    <asp:Label ID="lblCustomerId" Text='<%#Eval("CustomerId") %>' runat="server" />
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField>
                <ItemTemplate>
                    <asp:Label ID="lblCustomerName" Text='<%#Eval("CustomerName")%>' runat="server" />
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField>
                <ItemTemplate>
                    <asp:Label ID="lblcountry" Text='<%#Eval("Country")%>' runat="server" />
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Action">
                <ItemTemplate>
                    <asp:Button Text="Edit" runat="server" />
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>
    <asp:Button ID="btnSubmit" Text="Transfer" OnClick="onclick" runat="server" />
</div>
</form>

C#

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

private void GetCustomerData()
{
    DataTable dt = new DataTable();
    dt.Columns.Add("CustomerId", typeof(int));
    dt.Columns.Add("CustomerName", typeof(string));
    dt.Columns.Add("Country", typeof(string));
    dt.Rows.Add(1, "peter", "USA");
    dt.Rows.Add(2, "Maria ", "France");
    dt.Rows.Add(3, "Antonio Moreno", "Brazil");
    dt.Rows.Add(4, "Thomas Hardy", "Ireland");
    dt.Rows.Add(5, "Hanna Moos ", "Finland");
    dt.Rows.Add(6, "Martín Sommer ", "USA");
    gvRecord.DataSource = dt;
    gvRecord.DataBind();
}

protected void onclick(object sender, EventArgs e)
{
    // Dummy DataTable
    DataTable dtfk = new DataTable();
    dtfk.Columns.Add("CustomerId", typeof(int));
    dtfk.Columns.Add("CustomerName", typeof(string));
    dtfk.Columns.Add("Country", typeof(string));

    foreach (GridViewRow row in gvRecord.Rows)
    {
        CheckBox check = row.FindControl("checkRecord") as CheckBox;
        if (check.Checked)
        {
            int customerId = Convert.ToInt32((row.FindControl("lblCustomerId") as Label).Text);
            string customerName = (row.FindControl("lblCustomerName") as Label).Text;
            string country = (row.FindControl("lblcountry") as Label).Text;
            dtfk.Rows.Add(customerId, customerName, country);
        }
    }

    Session["GrdiviewData"] = dtfk;
    Response.Redirect("Default2.aspx");
}

HTML

Default2.aspx Page

<form id="form1" runat="server">
<div>
    <asp:GridView ID="gvRecord" runat="server" AutoGenerateColumns="false">
        <Columns>
            <asp:TemplateField HeaderText="Action">
                <ItemTemplate>
                    <asp:CheckBox ID="checkRecord" Checked="true" runat="server" />
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="CustomerId">
                <ItemTemplate>
                    <asp:Label ID="Label1" Text='<%#Eval("CustomerId") %>' runat="server" />
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField>
                <ItemTemplate>
                    <asp:Label ID="Label2" Text='<%#Eval("CustomerName")%>' runat="server" />
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField>
                <ItemTemplate>
                    <asp:Label ID="Label1" Text='<%#Eval("Country")%>' runat="server" />
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Action">
                <ItemTemplate>
                    <asp:Button ID="Button1" Text="Edit" runat="server" />
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>
</div>
</form>

C#

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

private void GetData()
{
    DataTable dt = (DataTable)Session["GrdiviewData"];
    gvRecord.DataSource = dt;
    gvRecord.DataBind();
}

Screenshot