c# - Updating through LINQ in different DataBase -

i have db looks this:

1st:

commissionsv2 (table = entity_product_point)
dbml has 1 table.

2nd:

webenroll (table = planmaster)
dbml has 1 table in it.

now through linq adding row in has query this:

                        commissionsv2datacontext cv = new commissionsv2datacontext();                         entity_product_point ev = new entity_product_point();                         ev.entity_id = getentity;                         ev.product_id = tr.first();                         ev.hicommissionold = (double)firststyrcomp;                         ev.lowcommissionold = (double)recurringcomp;                         ev.hicommission = (double)finalfirstyrcomp * 100;                         ev.lowcommission = (double)finalrecurringcomp * 100;                         ev.datecreated = system.datetime.now;                          cv.entity_product_points.insertonsubmit(ev);                         cv.submitchanges(); 

now update statement this:

 protected void gvshowcomm_rowupdating(object sender, gridviewupdateeventargs e)     {          //getting entity_id session!         int getentity = int16.parse(session["entityselected"].tostring());          //accessing variables controls!         system.web.ui.webcontrols.textbox product_id = gvshowcomm.rows[e.rowindex].findcontrol("productname") system.web.ui.webcontrols.textbox;         system.web.ui.webcontrols.textbox planname = gvshowcomm.rows[e.rowindex].findcontrol("planname") system.web.ui.webcontrols.textbox;         system.web.ui.webcontrols.textbox hicommold = gvshowcomm.rows[e.rowindex].findcontrol("hicomm") system.web.ui.webcontrols.textbox;         system.web.ui.webcontrols.textbox lowcommold = gvshowcomm.rows[e.rowindex].findcontrol("lowcomm") system.web.ui.webcontrols.textbox;          //storing values variables!         int product = int16.parse(product_id.text);         string plan = planname.text;         int hiold = int16.parse(hicommold.text);         int lowold = int16.parse(lowcommold.text);          //updating values table through linq!         dbwebenrolldatacontext dt = new dbwebenrolldatacontext(); //this has planname in planmaster table.         commissionsv2datacontext cv = new commissionsv2datacontext(); //entity_product_point has other columns needs updated!          entity_product_point ev = cv.entity_product_points.single(c => c.product_id == product);         ev.hicommissionold = hiold;         ev.lowcommissionold = lowold;         ev.entity_id = getentity;         cv.submitchanges(); 

in order update, need retrieve entity needs updated.

so in case be:

entity_product_point ev = cv.entity_product_points.single(c => c.product_id == product); ev.hicommissionold = hiold; ev.lowcommissionold = lowold; // retrieve plan needs updated , set name // submit changes cv.submitchanges(); // retrieve new values , rebind gridview against new values