Help Constructing INSERT

Im needing to construct an INSERT statement into a table called RUNSIZEUPCS using fields contained in hidden text boxes and a dataset to build out my record. I think I am close; however, I'm not sure about my insertsql statement since the New_UPC field is underlined in green. The following is the code that I have. Please help.

vb.net Code:

Public Sub Insert_RunsizeUPCs()
        Dim Command As SqlCommand
        Dim adapter As New SqlDataAdapter
        Dim dsin As New DataSet
        Dim i As Integer
        Dim sql As String
        Dim insertsql As String
        Dim Code_manip As Integer
        Dim New_Name As String
        Dim New_UPC As String
 
        Get_Max_Code()
        Code_manip = CInt(TxtCode.Text)
        Code_manip = Code_manip + 1
 
        sql = "SELECT U_size FROM SIZERUNS WHERE U_run = " & TextBox2.Text
        insertsql = "INSERT INTO RUNSIZEUPCS (Code,Name,U_item,U_size,U_upc) VALUES(Code_manip, New_Name, " & TextBox1.Text & ", " & dsin.Tables(0).Rows(i).Item(0) & New_UPC & ")"
        'Connection = New SqlConnection(ConnectionString)
 
        Try
            Connection.Open()
            Command = New SqlCommand(sql, Connection)
            adapter.SelectCommand = Command
            adapter.Fill(dsin)
            adapter.Dispose()
            Command.Dispose()
            Connection.Close()
 
            For i = 0 To dsin.Tables(0).Rows.Count - 1
                Code_manip = Code_manip + i
                New_Name = String.Concat(TextBox1.Text, dsin.Tables(0).Rows(i).Item(0))
                New_UPC = UPC_Code_Manip()
                adapter.InsertCommand = New SqlCommand(insertsql, Connection)
                adapter.InsertCommand.ExecuteNonQuery()
            Next i
        Catch ex As Exception
            MsgBox("Can not open connection ! ")
        End Try
 
 
    End Sub

Moved From The CodeBank (which is for sharing code rather than posting questions :) )

Code:

---

Dim New_UPC As String
:
:
sql = "SELECT U_size FROM SIZERUNS WHERE U_run = " & TextBox2.Text
insertsql = "INSERT INTO RUNSIZEUPCS (Code,Name,U_item,U_size,U_upc)
VALUES(Code_manip, New_Name, " & TextBox1.Text & ", " & dsin.Tables(0).Rows(i).Item(0) & New_UPC & ")"
'Connection = New SqlConnection(ConnectionString)

---

you declared the variable alright but forgot to initialized/put value in it before using. try to put something in New_UPC prior to using it.

Thank you for looking at it. I figured out what was going on just a bit ago.

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