I worked in ListView. And i faced one issue with OnItemCommand. There is link button, on click this button OnItemCommand event shoud fire. But it is not working. Because there is no PostBack check in the Page_Load event. By adding IsPostBack, this issue will be resolved.
Aspx Code:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="MyListViewTest.aspx.cs" Inherits="IgroupUploader.MyListViewTest" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ListView ID="lvFile" runat="server" OnItemCommand="lvFile_ItemCommand" GroupItemCount="2" GroupPlaceholderID="groupPlaceholder">
<LayoutTemplate>
<table>
<tr>
<td runat="server" id="groupPlaceholder"></td>
</tr>
</table>
</div>
</LayoutTemplate>
<GroupTemplate>
<tr>
<asp:PlaceHolder runat="server" ID="itemPlaceholder"></asp:PlaceHolder>
</tr>
</GroupTemplate>
<GroupSeparatorTemplate>
<tr><td style="height:23px;"></td></tr>
</GroupSeparatorTemplate>
<ItemTemplate>
<td>
<asp:LinkButton ID="LinkButton1" CommandName="Delete" runat="server" Text='<%#Eval("OriginalFileName") %>' >LinkButton</asp:LinkButton>
</td>
</ItemTemplate>
</asp:ListView>
</div>
</form>
</body>
</html>
Code Behind:
protected void Page_Load(object sender, EventArgs e)
{
GetFileList();
}
public void GetFileList()
{
DataTable dtFile = new DataTable();
DataAccessLayer ObjData = new DataAccessLayer();
//Get all the files uploaded by the logged in user.
dtFile = ObjData.GetAllFiles(UserHashCode, this.IsAdmin);
//Bind it to the listview.
lvFile.DataSource = dtFile;
lvFile.DataBind();
}
protected void lvFile_ItemCommand(object sender, ListViewCommandEventArgs e)
{
if (e.CommandName.Equals("Delete"))
{
}
}
Every thing is fine in the front end. We have to add not IsPostBack in the page load:
Working Code
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
GetFileList();
}
}
public void GetFileList()
{
DataTable dtFile = new DataTable();
DataAccessLayer ObjData = new DataAccessLayer();
//Get all the files uploaded by the logged in user.
dtFile = ObjData.GetAllFiles(UserHashCode, this.IsAdmin);
//Bind it to the listview.
lvFile.DataSource = dtFile;
lvFile.DataBind();
}
protected void lvFile_ItemCommand(object sender, ListViewCommandEventArgs e)
{
if (e.CommandName.Equals("Delete"))
{
}
}
Sibasis Jena 