Re: Business Facade Implementations - ASP.NET Discussion Boards

First Prev Next

Re: How to use VB.NET ASP as an interface for copying documents from a server to another server

Christian Graus10-Feb-09 12:39

Christian Graus

10-Feb-09 12:39

AndyASPVB wrote:
VB.Net ASP

No such thing. VB.NET does ASP.NET, for which this is the forum. ASP is VBScript.

AndyASPVB wrote:
o copy word and WAV files from a folder on one server to a folder on another server.

Well, that depends. If the server you're copying to is the server hosting the website, then you *could* do it that way, pretty easily.

Christian Graus

Driven to the arms of OSX by Vista.

Re: How to use VB.NET ASP as an interface for copying documents from a server to another server

Ranjit Viswakumar10-Feb-09 16:29

Ranjit Viswakumar

10-Feb-09 16:29

There are two scenarios. If the source and destination server are in the same domain, you can use a UNC path to the new server with a regular File.Copy method-

http://msdn.microsoft.com/en-us/library/system.io.file.copy(VS.80).aspx[^]

If the destination server is not in the same domain, we have to get a little more creative. We can use the FTP or HTTP protocol to do this via the web. Check these out-

FTP
http://msdn.microsoft.com/en-us/library/system.net.ftpwebrequest(VS.80).aspx[^]

HTTP
http://msdn.microsoft.com/en-us/library/system.net.webclient(VS.80).aspx[^]

Try these out. Good luck!

Ranjit Viswakumar
Professional Services Specialist
http://hostmysite.com/?utm_source=bb

Hidden CheckBoxes not holding their checked state when paging

AndyASPVB10-Feb-09 10:54

AndyASPVB

10-Feb-09 10:54

Hi
I am having problem with my gridview not holding its checked state when being paged back and forth. I have used the code given below, which I found from another website. The only difference being that I am using a sqldatasource, and I changed it to rebind to my gridview as soon below. However, despite this, it is not holding the checked state.

Private Sub RememberOldValues()

Dim categoryIDList As New ArrayList()

Dim index As Integer = -1

For Each row As GridViewRow In GridView1.Rows

index = CInt(GridView1.DataKeys(row.RowIndex).Value)

Dim result As Boolean = DirectCast(row.FindControl("CheckBox1"), CheckBox).Checked

If Session(CHECKED_ITEMS) IsNot Nothing Then

categoryIDList = DirectCast(Session(CHECKED_ITEMS), ArrayList)

End If
If result Then
If Not categoryIDList.Contains(index) Then

categoryIDList.Add(index)

End If

Else

categoryIDList.Remove(index)

End If

Next

If categoryIDList IsNot Nothing AndAlso categoryIDList.Count > 0 Then

Session(CHECKED_ITEMS) = categoryIDList

End If

End Sub

Private Sub RePopulateValues()

Dim categoryIDList As ArrayList = DirectCast(Session(CHECKED_ITEMS), ArrayList)

If categoryIDList IsNot Nothing AndAlso categoryIDList.Count > 0 Then

For Each row As GridViewRow In GridView1.Rows

Dim index As Integer = CInt(GridView1.DataKeys(row.RowIndex).Value)

If categoryIDList.Contains(index) Then

Dim myCheckBox As CheckBox = DirectCast(row.FindControl("CheckBox1"), CheckBox)

myCheckBox.Checked = True

End If

Next

End If

End Sub

Protected Sub GridView1_PageIndexChanging(ByVal sender As Object, ByVal e As GridViewPageEventArgs)

RememberOldValues()

GridView1.PageIndex = e.NewPageIndex

GridView1.DataBind

RePopulateValues()

End Sub

My checkboxes are already disabled from user action because they are set by an image button I have on the gridview. Can you see what I need to change to keep the checked state when paging?

Thanks

Re: Hidden CheckBoxes not holding their checked state when paging

Christian Graus10-Feb-09 12:41

Christian Graus

10-Feb-09 12:41

Have you stepped through the code to see if the values are being stored, and what happens when the code attempts to set a checkbox ?

Christian Graus

Driven to the arms of OSX by Vista.

Re: Hidden CheckBoxes not holding their checked state when paging

AndyASPVB11-Feb-09 10:36

AndyASPVB

11-Feb-09 10:36

Hi
I think I know what's happening!

Running the code through debug in Visual Studio 2008, I noticed that the code is working, and checkbox is being re-set. However, what I have noticed, and what I believe is that the whole page is being posted back because the whole gridview is being repopulated after the pageindexchanging event has been fired.

Is there away round this? I must point out, I mustn't use JavaScript because the website is being hosted on a client where it is being switched off.

Thanks

Custom Sorting an ASP GridView - Urgent Help Needed

AndyASPVB10-Feb-09 10:42

AndyASPVB

10-Feb-09 10:42

I have about six columns, and what I am looking to do is when any one of the six columns has been sorted into ascending of decending order for that state to remain when the next column is being sorted into either ascending or decending order. However, it is not sorting on two columns I need, I need it over the 6 columns, and thus when each column is sorted its state needs to be maintained until the user has filled up the sort expression. The sort expression needs to be maintained over the paging of the gridview.

I have been given this code by a member:

Protected Sub GridView1_Sorting(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewSortEventArgs) Handles GridView1.Sorting

Dim selectedColumn As String = e.SortExpression
Dim viewstateColumns As String

If ViewState("sortBLOCKED EXPRESSION Is Nothing Then
viewstateColumns = String.Empty
Else
viewstateColumns = ViewState("sortBLOCKED EXPRESSION.ToString()
End If

If viewstateColumns.IndexOf(",") >= 0 Then
viewstateColumns = String.Empty

ElseIf Not String.IsNullOrEmpty(viewstateColumns) Then
viewstateColumns = viewstateColumns & ","

End If

viewstateColumns = viewstateColumns & selectedColumn

e.SortExpression = viewstateColumns

ViewState("sortBLOCKED EXPRESSION = e.SortExpression
End Sub

Unfortunately, it doesn't sort on the first column and seems to work on only two columns, plus I am unsure how to create a sort expression to hold my sort order, which can be in any order (i.e. it is not sequential over columns of the 1,2,3, type, but could 2,1,3 , 5,1,6, etc)

So, can anyone help me, please?

Thanks

Business Facade Implementations

Member 391904910-Feb-09 8:10

Member 3919049

10-Feb-09 8:10

I have developed several n-tier web apps:

* business logic layer
* DALC
* presentation layer

As I understand, a Business Facade layer can go on top of the business logic layer - basically as an additional layer of abstraction. Is this correct?

How many projects have you worked on where you've used a Business Facade layer? What are the main variations of this architecture? What are the pros and cons of this architecture?

Re: Business Facade Implementations

Jon Rista10-Feb-09 9:14

Jon Rista

10-Feb-09 9:14

I think a more common layer is a Service Layer. Your domain (business logic) should be isolated from other layers. The first layer of isolation is the Data Access Layer, which abstracts your domain from the data store. The second layer of isolation is usually a Service Layer, or sometimes called the Application Layer. This layer is intended to isolate your domain from its consumers, presenting a simpler API to the world of consumers (presentation, other businesses, other departments, etc.) Some consider services to be part of the domain, and thats certainly a valid opinnion. The main goal is to provide a contract that the products that need to consume your domain can bind to, rather than binding directly to all the various business objects in your domain. This allows your domain and the consumers of it to vary as needed, without having broad repercussions when the domain needs to change in the face of changing business requirements.

Re: Business Facade Implementations

Member 391904910-Feb-09 19:21

Member 3919049

10-Feb-09 19:21

Isn't a "Business Service Layer" the same thing as a "Service Facade"?

Re: Business Facade Implementations

Jon Rista11-Feb-09 5:40

Jon Rista

11-Feb-09 5:40

Not really. Services do provide a "facade", where a facade is a simplified API to a complex subsystem. However, services conform to a more strict set of rules, and are intended to be THE API, not a simplified API. Unlike a simple facade layer, which is just a simplification layer, the services in a service layer should conform to the following principles:

- formal contract
- loose coupling
- abstraction
- reusability
- autonomy
- statelessness
- discoverability
- composability

Conforming to those principles will maximize the long term maintainability of your project, keep layers loosly coupled, etc.

RE:Role selection from ASP.Net

grazza2110-Feb-09 6:08

grazza21

10-Feb-09 6:08

This is (possibly) just a quick one. I have a website set up with 3 roles, i want a user to be able to choose between 2 of these when registering (A and B for example), the third is the admin role. Is there anyways of adding this as a drop down list/radio button on the asp:creatuserwizard6

Dynamically creating and positioning dropdown lists

Mohammad A Gdeisat10-Feb-09 5:57

Mohammad A Gdeisat

10-Feb-09 5:57

Hi all,

I am creating a type of control that is used to display fill-in-blank questions, the control will have a drop down list in the location of each blank with 4 options to choose from, like this

The elephant [is, are, us, we] a very big Mammal that [eat, eating, eats, ate] plants...

[is, are, us, we] = drop down list with 4 options that the student uses to choose the best answer.

The question is how to dynamically create drop down server controls AND position them in the correct place within the words of the paragraph?

Any ideas?

Thanks

And ever has it been that love knows not its own depth until the hour of separation

Mohammad Gdeisat

create asp.net graphs....

priyareguri10-Feb-09 3:59

priyareguri

10-Feb-09 3:59

hi,i want to create graphs...plz help me..

txs in advance...

Re: create asp.net graphs....

vaghelabhavesh10-Feb-09 4:43

vaghelabhavesh

10-Feb-09 4:43

These two are very good articles.

http://www.sitepoint.com/article/asp-net-graphs-raise-the-bar/[^]

http://www.codeproject.com/KB/webforms/gdiGraph.aspx[^]

Re: create asp.net graphs....

Abhijit Jana10-Feb-09 5:06

Abhijit Jana

10-Feb-09 5:06

If you are working on .NET 3.5,Then You can sue Microsoft Chart Control. Or you can use some third party control like, Dundas Chart

cheers,
Abhijit
CodeProject MVP
My Recent Article : Exploring Session in ASP.Net

Re: create asp.net graphs....

Jon Rista10-Feb-09 5:52

Jon Rista

10-Feb-09 5:52

If your interested in writing your own graphing controls, you should check out the Raphael JavaScript library. Its a common wrapper around the various vector frameworks in different browsers. You can use the simplified Raphael API to create vector graphics that work in IE (VML), FireFox (SVG), Opera/Safari (Canvas), etc.

http://raphaeljs.com/[^]

I need to calculate the sum of one of the columns on crystal report - Need help

Slow Learner10-Feb-09 3:57

Slow Learner

10-Feb-09 3:57

Hi,

I am using DataSet as a datasource to my CrystalReport and I have no problem in displaying the data. But there is a column called MoneyWithHeld and I am trying to find a way how to calculate the sum or total of these values. I searched online and have found two possible solutions

1).Using Formula Fields -- Created a field called TotalWithHeld and in the formula I just put Sum({DataSet.MoneyWithHeld}) and that is it but no luck. I am pretty sure I have missed some thing else here but not sure what it was. Becuase while I was trying to save this TotalWithHeld field I ran into some syntax errors and as a result of those while trying to run the report the error was 'The function cannot be used because it must be evaluated later' .

2).Running Total -- I picked my DataSet.MoneyWithHeld filed to 'field to summarize' text box and I picked the "Sum" under type of summary drop down. When I run my app it wouldn't give me any error as it was in the case #1 but it wasn't displaying the total but just the last value of the MoneyWithHeld in the last record. I tried picking the Count, distinct count but nothing has worked. Looks like here too I need to put some kind of formula by selcting the radio button 'use a forumula' but not sure how to put it to get the total.

I am kind of new to this Crystal reports would some one be kind enough to help me with this?

Thanks,

-L

Sum or Total of a column in DataGrid changes when I click on Edit Row - Need help

Slow Learner10-Feb-09 3:53

Slow Learner

10-Feb-09 3:53

Hi,

I am summing a column in my DataGrid and displaying total at the
footer with the below piece of code

If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem Then

'Snip out the ViewCount

Dim ContributionWithHeld As Integer = Convert.ToInt32(DataBinder.Eval(e.Item.DataItem, "ContributionWithHeld"))
myTotalContributionWithHeld += ContributionWithHeld

ElseIf e.Item.ItemType = ListItemType.Footer Then

e.Item.Cells(20).Text = "Total: " & String.Format("{0:#,###}", myTotalContributionWithHeld)
End If

and it works great and it dispaly the correct total when it binds the
data. But if I click on Edit row button in the grid then the Sum/Total
at the footer changes (deducts the value of that cell in that row from
the total). Looks like the the row that is in Edit mode is not being
taken into acount while summing the values.

Can some one help me with this how to change the above code or what I
else I need to do to display the Sum correct even if any of the rows
in Edit mode.

Also, the other thing I would like to be able to do is when a row in
Edit mode and as I change the value in the Cell that I would like
Sum , the Sum at the footer needs to be changed. May be I need to do
it under OnCellChange event but not sure where and how do I do it as I
never done this before.

Please help.

Thanks,

-L

Re: Sum or Total of a column in DataGrid changes when I click on Edit Row - Need help

Slow Learner10-Feb-09 4:24

Slow Learner

10-Feb-09 4:24

HI,

Looks like it also works good as expected when I changed the If statement to include 'Or e.Item.ItemType = ListItemType.EditItem' at the end. So I am good with the Sum/Total now. But when I change the Cell I would like the Total/Sum also be changed. Any help appreciated.

Thanks,

-L

[newbie] Boundaries by pixel

jon-8010-Feb-09 3:41

jon-80

10-Feb-09 3:41

The following code snippet defines a hotspot which the user can click and where conditions can be created depending on the postback value.

Are there any tools or libraries in order to show the boundaries visually rather than counting the pixels? Smile | :)

<form id="form1" runat="server">
<asp:imagemap id="Imagemap1" runat="server" imageurl="Kids.jpg" xmlns:asp="#unknown">
Width="300" OnClick="Imagemap1_Click" HotSpotMode="PostBack">
<asp:rectanglehotspot top="0" bottom="225" left="0" right="150">
AlternateText="Sofia" PostBackValue="Sofia">
</asp:rectanglehotspot>
<asp:rectanglehotspot top="0" bottom="225" left="151" right="300">
</asp:rectanglehotspot></asp:imagemap></form>

Jon

How to add extra Storage for blog

Glossy10-Feb-09 3:24

Glossy

10-Feb-09 3:24

Hi friends,

Am creating a blog for the website. In this how can i add extra storage?

For understanding:

If we find ourself running out of space, it’s easy to add more storage to our blog.

we can add 5, 15, or 25 gigabytes to your blog,

So that we can add more pictures, videos to it.

For this what i want to do?

Give some idea

----
Glossy**

Re: How to add extra Storage for blog

Christian Graus10-Feb-09 9:19

Christian Graus

10-Feb-09 9:19

Well, if your users can all add 25 gig, you need some huge hard drives. I'd imagine at the end of the day, it would all be virtual, with all the content stored in a database, and the 'space' equating to a running total of how much DB space they have taken up and therefore how much they have left.

Christian Graus

Driven to the arms of OSX by Vista.

How to add water mark text

Glossy10-Feb-09 3:10

Glossy

10-Feb-09 3:10