How to programmatically create and use a list of checkboxes from ASP.NET?

Question

I have a page with a table of stuff and I need to allow the user to select rows to process. I\'ve figured out how to add a column of check boxes to the table but I can\'t se

Answer 1

I'm going to assume you're using a DataList but this should work with and Control that can be templated. I'm also going to assume you're using DataBinding.

Code Front:

    
        
        " target="_blank">
            <%# DataBinder.Eval(Container, "DataItem.Title")%>
    

Code Behind:

public partial class Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
            LoadList();
    }

    protected void DeleteListItem_Click(object sender, EventArgs e)
    {
        foreach (DataListItem li in List.Items)
        {
            CheckBox delMe = (CheckBox)li.FindControl("DeleteMe");

            if (delMe != null && delMe.Checked)
                    //Do Something
            }
        }

        LoadList();
    }

    protected void LoadList()
    {
        DataTable dt = //Something...
        List.DataSource = dt;
        List.DataBind();
    }

    protected void List_ItemDataBound(object sender, DataListItemEventArgs e)
    {
        if (e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType == ListItemType.Item)
        {
            string id = DataBinder.Eval(e.Item.DataItem, "ID").ToString();
            CheckBox delMe = (CheckBox)e.Item.FindControl("DeleteMe");

            if (delMe != null)
                delMe.Attributes.Add("value", id);                
        }
    }
}