The ASP.NET DataList control is a server-side control that used to display tabular data. It presents data from the data source. The data source can be either a DataTable or a table from the database.
In this article, I will show you how to show hide data list row in asp.net
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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="DataListHide.aspx.cs" Inherits="DataListHide" %>
<!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>
<asp:DataList runat="server" ID="Datalist1" Font-Size="10pt"
Font-Name="Verdana" OnItemCommand="Datalist1_ItemCommand">
<ItemTemplate>
<asp:LinkButton Style="text-decoration: none" runat="server" ID="btnDetails" Text="+"
CommandName="Show" Font-Name="Verdana" />
<b>
<%# DataBinder.Eval(Container.DataItem, "Id") %>
</b>
<br />
<asp:Label ID="lblEID" Visible="False" runat="Server" Text='<%# DataBinder.Eval(Container.DataItem, "ID") %>' />
<asp:DataGrid runat="server" ID="Datagrid1" Font-Name="Verdana" Font-Size="10pt"
HorizontalAlign="Center" Visible="False" Width="85%"/>
</ItemTemplate>
</asp:DataList>
</div>
</form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class DataListHide : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Datalist1.DataSource = CreateDS();
Datalist1.DataBind();
}
}
private DataSet CreateDS()
{
DataSet ds;
if (Session["DataList_ParentChild"] == null)
{
ds = new DataSet();
DataTable dt = new DataTable("Company");
DataRow dr;
dt.Columns.Add(new DataColumn("ID", typeof(Int32)));
dt.Columns.Add(new DataColumn("CompanyName", typeof(string)));
dt.Columns.Add(new DataColumn("Address", typeof(string)));
dt.Columns.Add(new DataColumn("Name", typeof(string)));
dt.Columns.Add(new DataColumn("Dept", typeof(string)));
for (int i = 1; i < 10; i++)
{
dr = dt.NewRow();
dr[0] = i;
dr[1] = "Company " + i;
dr[2] = "Address " + i;
dr[3] = "Manager name";
dr[4] = "Adminstration";
dt.Rows.Add(dr);
}
ds.Tables.Add(dt);
DataColumn[] Parent_PKColumns = new DataColumn[1];
Parent_PKColumns[0] = dt.Columns["ID"];
dt.PrimaryKey = Parent_PKColumns;
dt = new DataTable("Employees");
dt.Columns.Add(new DataColumn("ID", typeof(Int32)));
dt.Columns.Add(new DataColumn("CompanyID", typeof(Int32)));
dt.Columns.Add(new DataColumn("Name", typeof(string)));
dt.Columns.Add(new DataColumn("Dept", typeof(string)));
for (int i = 1; i < 10; i++)
{
int imax = 0;
if (i % 2 == 0) imax = 5;
else imax = 4;
for (int y = 2; y < imax; y++) //3 emplyees for each company
{
dr = dt.NewRow();
dr[0] = y + i * 5;
dr[1] = i;
dr[2] = "Employee # " + dr[0];
dr[3] = "Dept # " + (y + i);
dt.Rows.Add(dr);
}
}
DataColumn[] Child_PKColumns = new DataColumn[1];
Child_PKColumns[0] = dt.Columns["ID"];
dt.PrimaryKey = Child_PKColumns;
ds.Tables.Add(dt);
DataColumn[] Child_FKColumns = new DataColumn[1];
Child_FKColumns[0] = dt.Columns["CompanyID"];
ds.Relations.Add("ParentChild", Parent_PKColumns, Child_FKColumns);
Session["DataList_ParentChild"] = ds;
}
else
{
ds = (DataSet)Session["DataList_ParentChild"];
}
return ds;
}
protected void Datalist1_ItemCommand(object source, DataListCommandEventArgs e)
{
if (e.CommandName == "Show")
{
Label EmpIDlabel = (Label)e.Item.FindControl("lblEID");
string strEmpID = EmpIDlabel.Text;
((DataGrid)e.Item.FindControl("Datagrid1")).DataSource = GetEmpDetails(strEmpID);
((DataGrid)e.Item.FindControl("Datagrid1")).DataBind();
((DataGrid)e.Item.FindControl("Datagrid1")).Visible = true;
((LinkButton)e.Item.FindControl("btnDetails")).Text = "-";
((LinkButton)e.Item.FindControl("btnDetails")).CommandName = "Hide";
}
if (e.CommandName == "Hide")
{
((DataGrid)e.Item.FindControl("Datagrid1")).Visible = false;
((LinkButton)e.Item.FindControl("btnDetails")).Text = "+";
((LinkButton)e.Item.FindControl("btnDetails")).CommandName = "Show";
}
}
protected DataView GetEmpDetails(string id)
{
DataSet ds = CreateDS() as DataSet;
DataView dv = ds.Tables[1].DefaultView;
dv.RowFilter = "CompanyID=" + id;
return dv;
}
}