ExecuteNonQuery Requires An Open And Available Connection, The Connection Current Stat Is Close?

Nov 30, 2008

i make a class and when i call on form then that error occurs "ExecuteNonQuery requires an open and available connection, the connection Current stat is close "

Class Code isImports System.Data.SqlClientImports System.DataImports System.StringPublic Class DatabaseKits    Dim Cn As New SqlClient.SqlConnection    Public Function BuildConnection() As Boolean        Try            Cn.ConnectionString = "Persist Security Info=False;Integrated Security=True;Trusted_Connection=Yes;database=BizAimsPro2008;server=Server-2k3s"            BuildConnection =

[code]....

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Error - ExecuteScalar Requires An Open And Available Connection - The Connection's Current State Is Closed

Aug 3, 2011

i have an application. which is executed after every 5 mins. i have an open connection but it gives me the following error:

ExecuteScalar requires an open and available Connection. The connection's current state is closed.

my code is something like this. I have shown where all i am using ExceuteScalar()

Sub Main()
Try
connection.open()
cmd.ExecuteScalar()

[code]....

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[Code]...

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[code]....

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[code].....

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[code].....

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[code]...

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In the Main menu form load:

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Then when I want to read from the database:

Dim sqlDR
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[code]....

When I run the same code without the global CNN, but rather dim the connection inside the Select function, all works well.

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Try
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[code].....

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I've got this code and it opens the database connection in debugging (and i've used the wrong password to test that it fails) but when i come to ExecuteNonQuery I get this error

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[code]...

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________________________________________________________
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[code].....

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[CODE]...

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