asked on

How do I use the ItemDataBound event using C#?

Hi,

I have the attached ItemDataBound event attached to my asp.net listview control. I also have the attached "Traders" class that populates a List that I want to bind to my listview control. Unfortunately I receive the error "Operator '==' cannot be applied to operands of type 'System.Web.UI.WebControls.ListViewItemType' and 'System.Web.UI.WebControls.ListItemType'" on line 3 and "'System.Web.UI.WebControls.ListViewItem' does not contain a definition for 'DataItem' and no extension method 'DataItem' accepting a first argument of type 'System.Web.UI.WebControls.ListViewItem' could be found (are you missing a using directive or an assembly reference?)" on line 8?

Thanks.

protected void lvTrustAccounts_ItemDataBound(object sender, ListViewItemEventArgs e)
    {
        if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
        {
            ContentRating myRating = e.Item.FindControl("Rating1") as ContentRating;
            if (myRating != null)
            {
                Traders myBook = e.Item.DataItem as Traders;
                if (myBook != null)
                {
                    myRating.ItemId = myBook.Id;
                    myRating.DataSource = myBook.Rating;
                }
            }
        }
    }

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

public class Traders
{
    public string Name { get; set; }
    public int[] Rating { get; set; }
    public int Id { get; set; }

    public List<Traders> GetList()
    {
        List<Traders> tempList = new List<Traders>();
        for (int i = 0; i < 5; i++)
        {
            Traders myTraders = new Traders();
            myTraders.Id = i;
            myTraders.Name = "Traders " + i.ToString();
            myTraders.Rating = new int[] { 0, 0, 0, 0, 0 };
            myTraders.Rating[i] = i + 1;
            tempList.Add(myTraders);
        }
        return tempList;
    }
}

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krunal_shah

try like this,

protected void lvTrustAccounts_ItemDataBound(object sender, ListViewItemEventArgs e) 
    { 
        if (e.Item.ItemType == ListItemType.DataItem || e.Item.ItemType == ListItemType.AlternatingItem) 
        { 
            ContentRating myRating = e.Item.FindControl("Rating1") as ContentRating; 
            if (myRating != null) 
            { 
               ListViewDataItem dataItem = (ListViewDataItem)e.Item
               //do your code on thi dataItem
            } 
        } 
    }

Open in new window

krunal_shah

correction,
check this also,
http://www.codeproject.com/KB/webforms/listviewdatabind.aspx

protected void lvTrustAccounts_ItemDataBound(object sender, ListViewItemEventArgs e)  
    {  
        if (e.Item.ItemType == ListItemType.DataItem )  
        {  
            ContentRating myRating = e.Item.FindControl("Rating1") as ContentRating;  
            if (myRating != null)  
            {  
               ListViewDataItem dataItem = (ListViewDataItem)e.Item 
               //do your code on thi dataItem 
            }  
        }  
    }

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aspnet-scotland

ASKER

I'm not too sure if I understand. I still get errors when I attempt the attached...

My code still doesn't like the "==" operator and still doesn't recognise DataItem?

protected void lvTrustAccounts_ItemDataBound(object sender, ListViewItemEventArgs e)   
    {   
        if (e.Item.ItemType == ListItemType.DataItem )   
        {   
            ContentRating myRating = e.Item.FindControl("Rating1") as ContentRating;   
            if (myRating != null)   
            {   
               ListViewDataItem dataItem = (ListViewDataItem)e.Item;  
               if (dataItem != null)
               {
                   myRating.ItemId = dataItem.Id;
                   myRating.DataSource = dataItem.Rating;
               }  
            }   
        }   
    }

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ASKER CERTIFIED SOLUTION

NazoUK

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