c# - could not find installable isam access #2 -


i have problem in c# application related connection string , think.

scenarios: moved login form main form, in loading set connection string, , things fine. when closed main form, , re-login in con.open() step , error release: not find installable isam.

my connection string:

constring = @"provider=microsoft.ace.oledb.12.0; data source="; constring += application.startuppath + "//shdb.mdb; jet oledb:database password=2212123;";


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