Question

I am accessing list of data as shown below.

var result = (from Pages in PagesList.Items.OfType<SPListItem>()
select new ListImages
{
  desc = Convert.ToString(Pages["Description"])
}).ToList();

What I want is to auto generate customized increamental id for the no of rows generated.
ex, slide-img-1, slide-img-2 etc.

public class ListImages
{
    string _desc;   
    string _id;
     public string id
    {
        get
        {
            if (_id != null)
                return _id;
            else
                return string.Empty;
        }
        set { _id = value; }
    }
    public string desc
    {
        get
        {
            if (_desc != null)
                return _desc;
            else
                return string.Empty;
        }
        set { _desc = value; }
    }
}

Thanks,

Ashish

Answer 1

I don’t know if it can be achieved with the Linq specific syntax, but writing your query like this, you could use the .Select() method that provides an index:

var result = PagesList.Items.OfType<SPListItem>()
    .Select((page, index) => new ListImages
                                 {
                                     desc = Convert.ToString(page["Description"]),
                                     id = String.Concat("slide-img-", index + 1)
                                 })
    .ToList();