Named argument 'ArgName' cannot be specified multiple times

Question

Please can somebody help me on the above question? I am using SimpleData in my project and trying to update records as follows but get the error mentioned above.

var releasedHosts = show_crm.tblName.Update(ID: Id, ID: newId);

Error Message:

Named argument 'ID' cannot be specified multiple times

Thank you.

Code Snippet

string siteName = ddlDeleteSite.SelectedItem.Text;
if (!siteName.Equals("Unknown-Site") && siteName != null)
        {
            int siteId = Convert.ToInt32(ddlDeleteSite.SelectedValue);
            //Update record to Attach Hostname to selected site by updating it's SiteID and remove it from 'Unknown-Site'
            var updatedSite = show_crm.tblSites.UpdateBySiteID(SiteID: siteId, Deleted: true);
            if (updatedSite != null)
            {
                var unknownSite = show_crm.tblSites.FindBySiteName("Unknown-Site");
                int unknownSiteId = unknownSite.SiteID;
                var releasedHosts = show_crm.tblHostNames.Update(new { SiteID = unknownSiteId }, new { SiteID = siteId });//(show_crm.tblHostNames.SiteID == siteId, SiteID: unknownSiteId);
            }
            lblDeleteSiteStatus.Text = ddlDeleteSite.SelectedItem.Text + " deleted successfully.";
            lblDeleteSiteStatus.Visible = true;
            RetrieveSites(ddlDeleteSite);

        }

Answer 1

When you want to use a column as criteria and update it, you have to use either the criteria overload of update:

show_crm.tblName.UpdateAll(show_crm.tblName.ID == Id, ID: newId);

or you can specify two objects as the criteria to do an optimistic-concurrency type of this:

show_crm.tblName.Update(new {ID = newId}, new {ID = Id});

In the latter form, the first object contains the new values and the second one the "original" values.