Prerequisites
C# Programming knowledge
Summary
Topics covered in this video;
-Collections
-Adding Array Elements
-ListBox/GridView
-List Index relative to Array
-FillList/BindList
-Object List
-Split method
-String
Video
Reference Materials
ArrayListExample.aspx Page Content
<h1>ArrayList</h1>
Enter values separated by a commas:<br/>
<div>
<asp:TextBox ID="tbList" runat="server" TextMode="MultiLine" Height="80" Width="200" CssClass="vertical-align-top" ></asp:TextBox>
<asp:Button ID="btnCreateArrayList" runat="server" Text="Create ArrayList" OnClick="btnCreateArrayList_Click" CssClass="vertical-align-top" />
</div>
<br/>
<h1>ArrayList Data Bound to:</h1> <br/>
<table style="float:left; margin:0% 0% 0% 10%">
<tr>
<td><h1>ListBox</h1></td>
<td><h1>GridView</h1></td>
</tr>
<tr>
<td> <asp:ListBox ID="lbArrayList" runat="server"></asp:ListBox></td>
<td><asp:GridView ID="gvList" runat="server"></asp:GridView></td>
</tr>
</table>
<br/><br/><br/><br/>
Item to Add to ArrayList:<br/> <asp:TextBox ID="tbAddToList" runat="server" Width="80"></asp:TextBox>
<asp:Button ID="btnAddToList" runat="server" Text="Add to List" OnClick="btnAddToList_Click" />
<br/>Enter List Index<asp:TextBox ID="tbIndex" runat="server" TextMode="Number" Width="40" /><asp:Button runat="server" Text="Show" ID="btnShow" OnClick="btnShow_Click" /> <asp:Label ID="lblIndex" runat="server" Text=""/>ArrayListExample.aspx.cs
using System;
using System.Web.UI;
using System.Collections;
namespace DatabaseSample1.Pages
{
public partial class ArrayListExample : Page
{
public static ArrayList List = new ArrayList();
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnCreateArrayList_Click(object sender, EventArgs e)
{
FillList();
BindList();
}
protected void btnAddToList_Click(object sender, EventArgs e)
{
List.Add(tbAddToList.Text);
BindList();
}
protected void FillList()
{
string[] s1 = tbList.Text.Split(',');
List.Clear();
foreach (string s2 in s1)
{
List.Add(s2);
}
}
protected void BindList()
{
List.Sort();
lbArrayList.DataSource = List;
lbArrayList.DataBind();
gvList.DataSource = List;
gvList.DataBind();
}
protected void btnShow_Click(object sender, EventArgs e)
{
int i = Convert.ToInt32(tbIndex.Text);
lblIndex.Text = List[i].ToString();
}
}
}