Copy (Clone) ASP.Net GridView row on Button Click below clicked row using C# and VB.Net

Hi Vincenzo67,

Refer below code.

HTML

<asp:GridView runat="server" ID="gvCustomers" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField DataField="CustomerId" HeaderText="ID" />
        <asp:BoundField DataField="Name" HeaderText="Name" />
        <asp:BoundField DataField="Country" HeaderText="Country" />
        <asp:TemplateField ItemStyle-HorizontalAlign="Center">
            <ItemTemplate>
                <asp:ImageButton ID="btselect" runat="server" OnClick="cmdCopy_Click" AlternateText="Copy" />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

Namespaces

C#

using System.Data;

VB.Net

Imports System.Data

Code

C#

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

private void BindGrid()
{
    if (ViewState["Customers"] == null)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[]
        {
            new DataColumn("CustomerId", typeof(int)),
            new DataColumn("Name"),
            new DataColumn("Country")
        });
        dt.Rows.Add(1, "John Hammond", "United States");
        dt.Rows.Add(2, "Mudassar Khan", "India");
        dt.Rows.Add(3, "Suzanne Mathews", "France");
        dt.Rows.Add(4, "Robert Schidner", "Russia");
        ViewState["Customers"] = dt;
    }
    this.gvCustomers.DataSource = ViewState["Customers"] as DataTable;
    this.gvCustomers.DataBind();
}

protected void cmdCopy_Click(object sender, EventArgs e)
{
    GridViewRow gvRow = (sender as ImageButton).NamingContainer as GridViewRow;
    int index = gvRow.RowIndex;
    int id = Convert.ToInt32(gvRow.Cells[0].Text);
    string name = gvRow.Cells[1].Text;
    string country = gvRow.Cells[2].Text;


    if (ViewState["Customers"] != null)
    {
        DataTable dt = ViewState["Customers"] as DataTable;
        DataRow dr = dt.NewRow();
        dr["CustomerId"] = id;
        dr["Name"] = name;
        dr["Country"] = country;
        dt.Rows.InsertAt(dr, index + 1);
        ViewState["Customers"] = dt;
    }
    this.BindGrid();
}

VB.Net

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()
    If ViewState("Customers") Is Nothing Then
        Dim dt As DataTable = New DataTable()
        dt.Columns.AddRange(New DataColumn() {
                                New DataColumn("CustomerId", GetType(Integer)),
                                New DataColumn("Name"),
                                New DataColumn("Country")
                            })
        dt.Rows.Add(1, "John Hammond", "United States")
        dt.Rows.Add(2, "Mudassar Khan", "India")
        dt.Rows.Add(3, "Suzanne Mathews", "France")
        dt.Rows.Add(4, "Robert Schidner", "Russia")
        ViewState("Customers") = dt
    End If

    Me.gvCustomers.DataSource = TryCast(ViewState("Customers"), DataTable)
    Me.gvCustomers.DataBind()
End Sub

Protected Sub cmdCopy_Click(ByVal sender As Object, ByVal e As EventArgs)
    Dim gvRow As GridViewRow = TryCast((TryCast(sender, ImageButton)).NamingContainer, GridViewRow)
    Dim index As Integer = gvRow.RowIndex
    Dim id As Integer = Convert.ToInt32(gvRow.Cells(0).Text)
    Dim name As String = gvRow.Cells(1).Text
    Dim country As String = gvRow.Cells(2).Text

    If ViewState("Customers") IsNot Nothing Then
        Dim dt As DataTable = TryCast(ViewState("Customers"), DataTable)
        Dim dr As DataRow = dt.NewRow()
        dr("CustomerId") = id
        dr("Name") = name
        dr("Country") = country
        dt.Rows.InsertAt(dr, index + 1)
        ViewState("Customers") = dt
    End If

    Me.BindGrid()
End Sub

Screenshot