Not firing button click event

Question

Hi,

I have crated one control. Put some textbox and dropdown list as I required. I have created one button called submit. Which is not firing any event.
When I am click that submit button It is firing required field validation but after filling all the details it is not firing any events.

Need help ASAP.

I am posting click event here with :

Protected Sub btnRaiseOutboundRequestOperation_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnRaiseOutboundRequestOperation.Click

            Dim request As New Request
            Dim isOperationSuccessfull As Boolean = False

            If Not String.IsNullOrEmpty(Session("GalaxyId")) Then

                If Not String.IsNullOrEmpty(Current.Request.QueryString("reqid")) Then

                    Dim requestId As Integer = Integer.Parse(Current.Request.QueryString("reqid"))
                    request = bl_Request.LoadRequest(requestId)
                    request = CreateRequestObject(Enumerations.Operation.Update, request)

                    If bl_Request.UpdateRequest(request) Then
                        isOperationSuccessfull = True
                    End If

                Else

                    request = CreateRequestObject(Enumerations.Operation.Create, Nothing)
                    request.RequestId = bl_Request.RaiseRequest(request)

                    If request.RequestId > 0 Then
                        isOperationSuccessfull = True
                    End If

                End If

                If isOperationSuccessfull Then

                    Dim thisOperationsRequestHistory As RequestHistory = bl_RequestHistory.CreateRequestHistoryObject(Session("GalaxyId"), request.RequestId, txtRaiseOutboundRequestRemark.Text)

                    If bl_RequestHistory.CreateRequestHistoryEntry(thisOperationsRequestHistory) Then
                        Response.Redirect("RequestPool.aspx")
                    Else
                        lblMessage.Text = "<span style='color: Red;'>Creation of request trace failed.</span>"
                        lblMessage.Visible = True
                    End If

                Else
                    lblMessage.Text = "<span style='color: Red;'>Request operation failed.</span>"
                    lblMessage.Visible = True
                End If

            End If

        End Sub

Thanks & Regards,
Jani Sahil H.