How to insert data into SQL Server database by VB.Net in Windows application. I am using the Windows form application.
At run time it gives exception that:
con.open() the connection is not established.
code:
imports system.data
imports system.data.sqlclient
on button_click(){
Dim cn as SqlConnection=new SqlConnection("Data Source=.\sqlexpress;InitialCatlog=shri;Security=True;User id=---;password=system")
cn.close()
cn.Open()
Dim cmd as SqlCommand=new SqlCommand("insert into tbl1 values('"&textbox1.Text&"','"textbox2.Text"')",cn)
cmd.executeNonQuery()
messageBox.Text="record Inserted"
cn.close()
...
}
Where tbl1
is the table in the database.
There are typos in your connection string.
Security
" with " Integrated Security
". Initial Catalog
". you forgot using of '& &' for this line
Dim cmd as SqlCommand=new SqlCommand("insert into tbl1 values('"& textbox1.Text &"','"& textbox2.Text &"')",cn)
or use this link
Try this (a standard connection):
Password=system;Persist Security Info=True;User ID=---;Initial Catalog=shri;Data Source=.\sqlexpress
If you want your password saved in connection string for future uses of connection string of connection object set Persist Security Info=True;
; other ways set it Persist Security Info=False;
Actualy when you set Persist Security Info=False;
; The password of your connection string property of your connection object will hide.
Or If you use a trusted connection use this:
Integrated Security=SSPI;Initial Catalog=shri;Data Source=.\sqlexpress
Then; Change your sqlcommand
to run a stored procedure for inserting is recommended. But the better use of insert into
is this:
insert into <table Name> (<List of Fileds>) Values (<List of Values>)
And be careful about type of values for adding (') in your command string.
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