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How to use IList Generic Interface to store data C#
IList Generic Interface represents a collection of objects that can be individually accessed by index.
This example demonstrates how to use IList Generic Interface to store data.
IList Generic Interface represents a collection of objects that can be individually accessed by index.
First, you will need to import the System.Collections.Generic namespace.
| using System.Collections.Generic; |
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The System.Collections.Generic namespace contains interfaces and classes that define generic collections, which allow users to create strongly typed collections that provide better type safety and performance than non-generic strongly typed collections.
We use the BindData function to do the work.
We use GridView control to display data. The code as follow:
private void BindData()
{
IList<UserInfo> userinfos = new List<UserInfo>(); for (int i = 0; i < 5; i++) {
UserInfo info = new UserInfo("username" + i.ToString(), "password" + i.ToString());
userinfos.Add(info); } this.GridView1.DataSource = userinfos; this.GridView1.DataBind(); |
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I add one userinfo custom class which is used to store data.The code as follow:
using System;
/// <summary>
/// UserInfo
/// </summary>
public class UserInfo
{
private string _userName = string.Empty; private string _password = string.Empty; public UserInfo() { } public UserInfo(string userName, string password) {
this._userName = userName;
this._password = password; } public string UserName {
} public string Password {
} |
The front end TemplateCsharp.aspx page looks something like this:
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" BackColor="White" BorderColor="#E7E7FF" BorderStyle="None" BorderWidth="1px" CellPadding="3" GridLines="Horizontal">
<FooterStyle BackColor="#B5C7DE" ForeColor="#4A3C8C" /> <Columns>
<asp:BoundField DataField="UserName" HeaderText="UserName" /> <asp:BoundField DataField="Password" HeaderText="Password" /> </Columns> <RowStyle BackColor="#E7E7FF" ForeColor="#4A3C8C" /> <SelectedRowStyle BackColor="#738A9C" Font-Bold="True" ForeColor="#F7F7F7" /> <PagerStyle BackColor="#E7E7FF" ForeColor="#4A3C8C" HorizontalAlign="Right" /> <HeaderStyle BackColor="#4A3C8C" Font-Bold="True" ForeColor="#F7F7F7" /> <AlternatingRowStyle BackColor="#F7F7F7" /> |
The flow for the code behind page is as follows.
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using System;
using System.Data;
using System.Configuration;
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;
using System.Collections.Generic;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e) {
if (!Page.IsPostBack)
BindData(); } private void BindData() {
IList<UserInfo> userinfos = new List<UserInfo>(); for (int i = 0; i < 5; i++) {
UserInfo info = new UserInfo("username" + i.ToString(), "password" + i.ToString());
userinfos.Add(info); } this.GridView1.DataSource = userinfos; this.GridView1.DataBind(); } |
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