VB.net connection string to sql databse -

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VB.net connection string to sql databse -

after using next code, no errors shown, database not updated 1 time have made alter using management scheme application. recommendations ?

dim constring string = application.startuppath.tostring() + "\mydatabasename.mdf" public c string = "data source=.\sqlexpress;attachdbfilename=" + constring + ";integrated security=true;user instance=true" sub openconnection() conn.connectionstring = c conn.open() end sub

use next code:

dim constring string = application.startuppath.tostring() + "\mydatabasename.mdf" public c string = "data source=.\sqlexpress;attachdbfilename=" + constring + ";integrated security=true;user instance=true" dim conn new sqlconnection(c) dim comm new sqlcommand dim strquery new string = "sql update query" seek comm.commandtext = strquery comm.connection = conn conn.open() comm.executenonquery() grab ex exception end seek

change connection string to:

"data source=.\sqlexpress;attachdbfilename=" + constring + ";initial catalog=mydatabasename;integrated security=true;user instance=true"

using initialcatalog helps when there more 1 databases.

vb.net

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