Errors with codes for deleting using linq

Question

I encounter a problem regarding the deleting of data using combo box. The error prompted me I have no idea of how to solve it. Anyone can help me about it?

priva         


        

Answer 1

I think you put your code in wrong place.. you just add items on same combo select change (cbLocationData_SelectedIndexChanged) that's wrong
put your code other appropriate place in which adding items are not part of same events

Answer 2

Your event is firing on SelectedindexChanged of the cb you're trying to fill. Try putting it in the page load or a more appropriate place?

Answer 3

Create a method something like this:

private void LoadLocation()
{
       using (testEntities Setupctx = new testEntities())
        {
            var storeLocation = (from vL in Setupctx.locations
                                 select new
                                         {
                                           Location1  =vL.Location1
                                         }
                                 );

                cbLocationData.DataTextField = "Location1";
                cbLocationData.DataSource = storeLocation;
                cbLocationData.DataBind();

        }
}

Then on your page load(asp.net)/form Load(winform) add:

           LoadLocation();

Hope this help.

Regards

Answer 4

private void cbLocationData_SelectedIndexChanged(object sender, EventArgs e)
{
    using (testEntities Setupctx = new testEntities())
    {
        var storeLocation = (from vL in Setupctx.locations
                             where vL.Location1 == vL.Location1
                             select vL.Location1);

        foreach (var locationData in storeLocation)
        {
            cbLocationData.Items.Add(locationData.ToString());
        }
    }
}

Is it possible that locationData needs set to tostring() or convert(), depending on the data type? Everything looks like it should be working correctly.