Jan 16 2007

JSDropdownlist part 2 - what about the javascript

Posted by admin under Controls

This is part 2 in this article serie. Please start from the beginning

Now - we are not totally finished when it comes to the original app. As I said it has some special requirements - for example the Delete button should only be available to superadmins - plus we need to throw in an warning message when clicked:

 Hiding/showing the buttons according to rights:

In the download I have faked the login procedure:

The code for this is simple - I set autopostback to true for the checkbox, set a session variable Session["admin"] and then in our databind procedure we check that value:



        protected void grdProducts_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                DataRowView oRow = e.Row.DataItem as DataRowView;
                Label lblId = e.Row.FindControl("lblId") as Label;
                lblId.Text = oRow["productid"].ToString();
                Label lblName = e.Row.FindControl("lblName") as Label;
                lblName.Text = oRow["productname"].ToString();

                Button oBut = e.Row.FindControl("btnEdit") as Button;
                oBut.CommandArgument = oRow["productid"].ToString();

                oBut = e.Row.FindControl("btnDelete") as Button;
                oBut.CommandArgument = oRow["productid"].ToString();
                if (IsCurrentUserSuperAdmin()== false)
                {
                    oBut.Visible = false;
                    oBut.Enabled = false;
                }
            }
        }

        private bool IsCurrentUserSuperAdmin()
        {
            //faked...
            return Session["admin"] == null || 
Session["admin"].ToString() == "" ? false : true;
        }

 Javascript warning for our delete button

Now for the Warning. It's pretty simple since we already have the reference to each Delete button in the databind procedure:



                oBut = e.Row.FindControl("btnDelete") as Button;
                oBut.Attributes.Add("onclick", 
                    "return confirm('Are you sure you want to delete this?');");

So far so good - now, however, consider this application a few months later. It has been a success to the users - and therefore now one should be able to do more things with each product:

- reorder (superadmin only)

- see/manage pictures (all)

- see sale sats

- create sale campaign

etc.

Now (at least this is what happened to my system) it would look like this:

 

CONTINUE PART 3 - Download