Hi,
The reason is i think you have not stored the data some where and need to add from the stored data.
I have done the example page. You can change the field name or design.
Design page:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="AddRows.aspx.cs" Inherits="Corner_AddRows" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<table cellpadding="0" cellspacing="0" border="0" width="100%">
<tr>
<td style="text-align: right">
Enter the First Name:
</td>
<td>
<asp:TextBox ID="txtFirstName" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td style="text-align: right">
Enter the Last Name:
</td>
<td>
<asp:TextBox ID="txtLastName" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td colspan="2" style="text-align: center">
<asp:Button ID="btnAdd" runat="server" Text="Add" onclick="btnAdd_Click" />
</td>
</tr>
<tr>
<td colspan="2" style="text-align: center">
<asp:GridView ID="gvList" runat="server" CellPadding="4" ForeColor="#333333" GridLines="None"
Width="544px">
<RowStyle BackColor="#EFF3FB" />
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<EditRowStyle BackColor="#2461BF" />
<AlternatingRowStyle BackColor="White" />
</asp:GridView>
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
Code File:
protected void Page_Load(object sender, EventArgs e)
{
if (Session["UsersTable"] != null)
{
DataTable dt = (DataTable)Session["UsersTable"];
}
}
private void BindTable(DataTable dt)
{
gvList.DataSource = dt;
gvList.DataBind();
Session["UsersTable"] = dt;
}
protected void btnAdd_Click(object sender, EventArgs e)
{
DataTable dtCurrent = null;
if (Session["UsersTable"] != null)
{
dtCurrent = (DataTable)Session["UsersTable"];
}
else
{
dtCurrent = CreateTable();
}
DataRow dRow = dtCurrent.NewRow();
dRow["FName"] = txtFirstName.Text.Trim();
dRow["LName"] = txtLastName.Text.Trim();
dtCurrent.Rows.Add(dRow);
BindTable(dtCurrent);
}
private DataTable CreateTable()
{
DataTable dtable = new DataTable();
DataColumn dColumn = null;
DataRow dRow = null;
dColumn = new DataColumn();
dColumn.ColumnName = "FName";
dtable.Columns.Add(dColumn);
dColumn = new DataColumn();
dColumn.ColumnName = "LName";
dtable.Columns.Add(dColumn);
return dtable;
}
Hope this will help you.