ASP.NET

.Add("@DistrictId", SqlDbType.TinyInt).Value = CheckBoxList1.SelectedValue

Public Structure structure_accountInfo
    Public m_firstName as string
    Public m_lastName as string
End Structure

Public Shared Function account_db_update(ByVal sAI as structure_accountInfo) as Integer

    Dim dwExitCode As Integer = 2
    Dim connStr As String = ConfigurationManager.ConnectionStrings("DefaultConnection").ConnectionString
    Dim conn As New SqlConnection(connStr)

    Dim query as string = _
    "UPDATE TABLE " & _
    " SET " & _
    "  firstName = @firstName " & _
    ", lastName = @lastName " & _
    " WHERE ID = @ID "

    Dim cmd As New SqlCommand(query, conn)

    Dim param__FirstName As SqlParameter
    param__FirstName = New SqlParameter("@FirstName", SqlDbType.VarChar, 80)
    param__FirstName.Value = sAI.m_firstName
    cmd.Parameters.Add(param__FirstName)

    Dim param__LastName As SqlParameter
    param__LastName = New SqlParameter("@LastName", SqlDbType.VarChar, 80)
    param__LastName.Value = sAI.m_lastName
    cmd.Parameters.Add(param__LastName)

    Try
        conn.Open()
        cmd.ExecuteNonQuery();

        dwExitCode = 0

    Catch ex As Exception
        dwExitCode = 1

    Finally

        conn.Close()
        conn = Nothing
        cmd = Nothing

    End Try

    return dwExitCode

End Function

Dim sAI as new structure_accountInfo()
sAI.m_firstName = txt_firstName.text.trim
sai,m_lastName = txt_lastName.Trim

account_db_update(sAI)