Error in Executescalar

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hello guys trying to get the result of those two queries in count and count1 but gwtting error in execute scalar please help me....

VB

Private Sub Form13_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim count As Integer
        Dim count1 As Integer
        Dim total As Integer
        Dim cmd As New OleDbCommand()
        Dim cmd1 As New OleDbCommand()
        Dim con As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\sachin\db1.mdb;Persist Security Info=True;Jet OLEDB:Database Password=admin")
        con.Open()
        cmd.CommandText = "select count(*) from answer where count=1 ;"
        cmd1.CommandText = "select count(*) from  answer where count=0;"


        count = CType(cmd.ExecuteScalar(), Integer)
        count1 = CType(cmd1.ExecuteScalar(), Integer)


        total = count - count1
        Me.Label1.Text = total
        cmd.Connection = con
        cmd.ExecuteNonQuery()
        con.Close()

Posted 2-Jun-13 0:25am

sachin bhise

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Comments

[no name] 2-Jun-13 6:37am

Are you going to tell us what error or are we supposed to guess?

sachin bhise 2-Jun-13 6:42am

m getting the following error
connection property has not been initialized

[no name] 2-Jun-13 6:48am

That would be because you have not set the command object's connection property, cmd.Connection = con.

sachin bhise 2-Jun-13 7:01am

where should i put the cmd.Connection = con in the above code?
pls tell me.

sachin bhise 2-Jun-13 7:04am

thanks a lot....my friend problem solved....thnks...

[no name] 2-Jun-13 7:04am

You are kidding me right?
Dim con As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\sachin\db1.mdb;Persist Security Info=True;Jet OLEDB:Database Password=admin")
cmd.Connection = con;
con.Open()

ShivKrSingh 2-Jun-13 7:27am

you can create single function for doing this. and can you that every where...

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 2-Jun-13 8:37am

Hi ThePhantomUpvoter,

Can you add one answer for this ? Otherwise it will be in the unanswered list.

Thanks,
Tadit

ShivKrSingh 2-Jun-13 7:26am

either you can use following

Private Sub Form13_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim count As Integer
Dim count1 As Integer
Dim total As Integer
Dim con As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\sachin\db1.mdb;Persist Security Info=True;Jet OLEDB:Database Password=admin")
con.Open()
Dim str1 as string = "select count(*) from answer where count=1 ;"
Dim str2 as string= "select count(*) from answer where count=0;"

Dim cmd As New OleDbCommand(str1, con)
Dim cmd1 As New OleDbCommand(str2, con)

count = CType(cmd.ExecuteScalar(), Integer)
count1 = CType(cmd1.ExecuteScalar(), Integer)
total = count - count1
Me.Label1.Text = total
con.Close()

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Christian Graus · Accepted Answer · 2013-06-02T04:31:00

For the sake of keeping the site clean, the answer, as posted by 'ThePhantomUpvoter' is to create and associate a connection to your command. To the OP, you don't learn programming by copying code off the web and not reading clear error messages. You need to work through articles or books and understand the code you use, or you will always have trivial issues like this.