Question

I have list page to show all images with its name from database in asp.net mvc list action (PhotoList – get).. in that view page (PhotoList.aspx), I have created checkbox to delete multiple rows. I want scenario like following

First page shows the list with in first column checkbox and in second column PhotoName and on the down page one button for delete selected rows .
when selects checkboxes and clicks the delete button, according to selection the rows will be deleted from database and return the same list page..

I don’t understand where to write code for delete and how?

<% foreach (var item in Model) { %>
    <tr>
        <td>
             <input type="checkbox" name="deleteImage" value="<%= item.PhotoId %>"/>
        </td>
        <td>
            <%= Html.ActionLink("Edit", "Edit", new { id=item.PhotoId }) %> 
        </td>
        <td>
            <%= Html.Encode(item.PhotoName) %>
        </td>
    </tr>
<% } %>
<input type="button" name="Delete" value="Delete Selected items"/>      

Answer 1

The Code for delete will be written in the HttpPost action for delete. Something like below should work if you are using myModel

[HttpPost]
public ActionResult Delete(myModel deleteEntries) //This is the post-version of your Action that rendered the view..If it's Edit, then change the name to Edit
{
    var deleteList = db.deleteEntries.where(d => d.checkBox == true).ToList();
    foreach (myList my in deleteList)
    {
        db.myList.Remove(my); // remember db should be your DbContext instace
    }
    db.SaveChanges();
}

UPDATE

You will first need to make a ViewModel because otherwise you cannot recognize which entries are checked for deletion with the help of checkbox.

Make a ViewMode class like following

using pratice3.Models; 
public class MyPhotoViewModel
{
    public UserManagementDbEntities.tblPhoto TablePhoto { get; set; }
    public bool checkBox { get; set; }
}

Return this to your view

[AcceptVerbs(HttpVerbs.Get)] 
public ActionResult PhotosList() 
{
    var viewModel = _datamodel.tblPhoto.Select(g => new MyPhotoViewModel
                                   {
                                       TablePhoto = g;
                                       checkBox = false;
                                   }).ToList();      
    return View(viewModel); 
}

In View, change the using statement to reflect IEnumerable<MyPhotoViewModel> and make appropriate changes accordingly.

Then, define your Post Action like following

[HttpPost]
public ActionResult PhotosList(IEnumerable<MyPhotoViewModel> myPhotoList) 
{
    var deleteList = myPhotoList.where(d => d.checkBox == true).ToList();
    foreach (var deletePhoto in deleteList)
    {
        _datamodel.tblPhoto.DeleteObject(deletePhoto.TablePhoto); 
    }
    db.SaveChanges();
}