handling dynamically generated controls - ASP.NET Discussion Boards

Hello all,
I'm at a fairly large company that has a number of ASP.NET applications running on our servers. The apps all use various back end databases to store data and do various operations. Because of IT policies, devs are no longer allowed to access production servers. Passwords, including those for service accounts, are to be changed on a regular schedule. So, I'm thinking that it might be possible in ASP.NET to set the account that each app uses and then used trusted connections for SQL server to do what we need. That way, the network operations people can change passwords without us being involved.

This is all due to Sarbanes-Oxley and HIPAA (as well as just common sense corporate security). Has anybody had to deal with this? If so, what did you use to streamline configuration management of your various deployed applications? Are there any solutions that you would recommend avoiding?

Thanks,
Will

i want to create a web form for my where employees ask clients certain questions and it is registered in a database. the page should have group roles, admin, user , etc... i want to also have a admin panel where only the admin can login and change password. i want be able to generate reports from data within the form. i want validate on entry of data on a page. can u guide me in the right direction please

Ferron

4guysfromrolla.com has some nice examples on basic webforms and more advanced things, you could also pick a place(connecting to database, creating web form, UI, etc..) to start and try google searches or article searchs here for whichever piece you are currently working on. If you dont want to do it yourself you could try rent-a-coder or a consultant firm, mabye even craigslist if you're in one of the cities it has listings for, or somone here may hired to do it. When i was starting out this site and 4guysfromrolla had great articles and tutorials for almost any individual piece i needed to use.

Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.

Hi,

I have a login user control on my master page. when someone log's out, it takes you back to my main page that uses the same master page.

everything works great if they use the asp:menu to navigate.

however, if the user log's out, the site takes them back to the main page and everything looks ok.
if they then navigate to a different page by clicking the asp:menu, the login controls page_load event gets fired ok. But if they type the url in the browser window, the page load event of the user control does not fire.

this is big problem for me. anyone have any ideas?

thanks.

chris Poke tongue | ;-P

i think u have error in user control when u have error in user control the page_load will occur even though it is html error also in desing example:

in above line u align multiple times this error not show at complile time, but page_load not occur check all syntax of your user control

for more: sk.haneef@gmail.com

This is haneef.............................................................

Thank you for your help but I don't think you understood the question.

The page load event fires for the control at all times when someone clicks the menu. however, it does not fire when someone types the url directly into the browser. is it some sort of page caching issue maybe? any ideas anyone?

I figured out the problem. It was loading a cached version of the page when a user typed the page into the browser.

i just changed the response.expires = 0;
in the page load of the control. it works fine now.

thanks. Smile | :)

Anybody can help me please!

I have a asp.net page (vb) where I need to create Dynamic Controls. the situation is as follow

I have two links one is inside the panel (add range) and other is outside the panel (add component).
when I click the addrange then the four text boxes are going to add in the panel and when I click on addcomponent then one panel with dropdown box is going to create on the page. I done it but when I click the addcomponent the panel is adding on the page but the boxes on the first panel comes down with the 2nd added panel and first panel does not contain addrange text boxes. I am using webcontrol files. AddRange.ascx and AddComponent.ascx. my code is as follwo.

-----Add Panel----

'Add Panel (component)
Private Sub AddAndRemovePanel()
Dim c As Control = GetPostBackControl(Page)
If Not IsNothing(c) Then
If c.ID.ToString = "btnAddComponent" Then

ltlCountH2.Text = Convert.ToInt16(ltlCountH2.Text) + 1
End If
End If

PH2.Controls.Clear()
Dim ControlID As Integer = 0
For i As Integer = 0 To (Convert.ToInt16(ltlCountH2.Text) - 1)
Dim DynamicUserControl As AddComponent = LoadControl("AddComponent.ascx")
While InDeletedList1("uc1" & ControlID) = True
ControlID += 1
End While
DynamicUserControl.ID = "uc1" & ControlID
AddHandler DynamicUserControl.RemoveUserControl1, AddressOf Me.HandleRemoveUserControl1
AddHandler DynamicUserControl.SelectComponent, AddressOf Me.handleSelectComponent
PH2.Controls.Add(DynamicUserControl)
ControlID += 1
Next
populateADDComponentDropDown()

' MsgBox(ltlCountH3.Text)
' MsgBox("ltlCountH3=" & ltlCountH3.Text)
' MsgBox("ltlCountH1=" & ltlCountH1.Text)
' MsgBox("ltlCountH2=" & ltlCountH2.Text)

End Sub

Private Function InDeletedList1(ByVal ControlID As String) As Boolean
Dim DeletedList() As String = ltlRemovedH2.Text.Split("|")
For i As Integer = 0 To DeletedList.GetLength(0) - 1
If ControlID.ToLower = DeletedList(i).ToLower Then
Return True
End If
Next
Return False
End Function
Sub HandleRemoveUserControl1(ByVal sender As Object, ByVal e As EventArgs)
Dim DynamicUserControl As AddComponent = sender.parent
PH2.Controls.Remove(sender.parent)
ltlRemovedH2.Text &= DynamicUserControl.ID & "|"
ltlCountH2.Text = Convert.ToInt16(ltlCountH2.Text) - 1

End Sub

--------AddRange-------------

'Add Range in Panel
Private Sub AddAndRemoveDynamicControls2()
Dim c As Control = GetPostBackControl(Page)
If Not IsNothing(c) Then
If c.ID.ToString = "btnAddRange" Then
ltlCountH3.Text = Convert.ToInt16(ltlCountH3.Text) + 1
End If
End If

'PH3.Controls.Clear()
Dim ControlID As Integer = 0
For i As Integer = 0 To (Convert.ToInt16(ltlCountH3.Text) - 1)
Dim DynamicUserControl As WebUserControl = LoadControl("AddRange.ascx")

While InDeletedList("uc3" & ControlID) = True
ControlID += 1
End While
DynamicUserControl.ID = "uc3" & ControlID

AddHandler DynamicUserControl.RemoveUserControl, AddressOf Me.HandleRemoveUserControl2

For Each c2 As Control In PH2.Controls

If c2.GetType.Name.ToLower = "addcomponent_ascx" Then
Dim uc As UserControl = CType(c2, UserControl)
Dim mypanel As Panel = uc.FindControl("panel1")
mypanel.Controls.Add(DynamicUserControl)
Else
MsgBox("not found")
End If
Next

'PH2.Controls.Add(DynamicUserControl)
ControlID += 1
Next

End Sub
Private Function InDeletedList2(ByVal ControlID As String) As Boolean
Dim DeletedList() As String = ltlRemovedH3.Text.Split("|")
For i As Integer = 0 To DeletedList.GetLength(0) - 1
If ControlID.ToLower = DeletedList(i).ToLower Then
Return True
End If
Next
Return False
End Function
Sub HandleRemoveUserControl2(ByVal sender As Object, ByVal e As EventArgs)
Dim DynamicUserControl As WebUserControl = sender.parent
PH3.Controls.Remove(sender.parent)
ltlRemovedH3.Text &= DynamicUserControl.ID & "|"
ltlCountH3.Text = Convert.ToInt16(ltlCountH3.Text) - 1
End Sub

Hello everyone!
this seems to be simple but does not work for me
I added an image control ro my asp.net page, now i need to choose the image to be displayed.
going to the imageurl property and openning a image select browser but I can't see any images , eve though I have placed images under app_data dir and also created an images dir under my project and placed images there as well.
It does not give me to nevigate in my computer only shows me app_data folder under http//localhost/myproject.
If anyone has an idea I will bevery greatful
Thnak you all

i am new to this field, but i faced the same problem,
do one thing, in the source file (.aspx.cs) search for the code of the image control, there look for the url of the image, now change this url to the full path of ur image ....
u will see the image, as u do ctrl+F5 .....
Wink | ;)

Generally I create a folder called images, in the web site part of the solution.

When adding an image, it depends on what you need it for. If it doesn't have any functionality aside from decorational (i.e. part of the layout), just add a simple html img tag

<img src="images/my_image.jpg" alt="" />

This assumes that your aspx file is in the same folder as the subfolder images.

If you need it for the execution of some server side coding, then you add:

<asp:Image Id="imgMyImage" ImageUrl="images/my_image.jpg" runat="server" />

I'm assuming, that the image you want to add, is not within the solution, which is why it might not be showing.

Adding the folder:
- right click on the solution name and click on new folder
- rename the folder to what you want

Adding the image:
- right click on the newly added folder and choose add existing Item
- look up the image file you want to add.

After this, inside the application folder, you will have a new folder which will contain the image you need.

SSK.

Anyone who says sunshine brings happiness has never danced in the rain.

zvit wrote:
and openning a image select browser

What is this ?

zvit wrote:
It does not give me to nevigate in my computer only shows me app_data folder under http//localhost/myproject.

You can't grab images outside of your app project.

Christian Graus

Please read this if you don't understand the answer I've given you

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Eventhough I have disabled viewstate for the Page and the checkbox control, it is still maintaing the checked state after postback.

I have a SQL 2005 database which contains the path to Word documents and graphics. I would like to create a web site to display the files. I have never uses ASP .NET. What is the best way to get started learning how to create a simple web site? Any suggestions of beginner books or sites to visit?

thanks

Are you new to programming altogether or just new to ASP.NET? Also, do you have any web development knowledge, i.e. HTML, CSS etc?

A good book for beginners is this http://www.amazon.co.uk/Beginning-ASP-NET-2-0-Programmer/dp/0764588508/ref=sr_1_9?ie=UTF8&s=books&qid=1213975895&sr=8-9[^] . I used it at college and it explains things very well with usefull examples.

But if you want to dive straight in then Google databinding from sqldatasource, you will get plenty of info back. What you probably want are tutorials on binding a datagrid control to your sqldatasource.

Hope this helps.

Dear ALL

I am developing a windows application using VB.6.0 in which I have to open .pps files in web browser and want to disable the Copy Slide, Edit Slide and Print Slide options in the context menu and also want to deactivate mouse's right Click.

Thanks

Vivek

hi i have two textboxes, a button and a label on a single webform. i want to add two numbers entered in textboxes and display result in label with button click plz tell me the C# code as the code i have written just concatenates the values.

If you show me the code i can edit it for you to make it work.

Here is the code i have written. plz modify it for my desired output.thx

protected void btnSum_Click(object sender, EventArgs e)
{
lblSum .Text =TextBox1 .Text +TextBox2 .Text ;

}

I am new , but I can suggest u ...
Convert those strings to integers,
add them,
convert the answer integer to string,
display the answer string !
Wink | ;)

Try this:

val2 = textBox1.Text;
val3 = textBox2.Text;

protected void btnSum_Click(object sender, EventArgs e)
{
Sum(val1 + val2) = val3;
lblSum.Text = val3;
}

I'm trying to create a basic server control to display and image but i keep getting errors. The control code below compiles fine but when i try to add it to a page it gives me errors. Can anyone help?

Control code:

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="testControl.ascx.cs" Inherits="_Default"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<img src="booze.jpg" runat="server" id="image" /> <br />

Code used in page/web form:

<%@ Register TagPrefix="apress" TagName="image" Src="testControl.ascx" %>

<apress:image id="image1" runat="server"></apress:image>

I've added the control .dll to the project and everything but i still get errors.
Help???

windhopper wrote:
I've added the control .dll to the project

why?

i think you are trying to create a UserControl , then why dll ?

Best Regards
-----------------
Abhijit Jana
Check Out My Latest Article

Java.NET : Integration of Java and .NET[^]
"Success is Journey it's not a destination"

Yes i am trying to create a user control but i keep getting errors when i add the control like i described so i've tried with the control .dll and without and still get errors so i'm looking for suggestions as to what else i can try? Is there something wrong with my code even though it compiles?

Hi
We have been battling with page timeouts over the last week or to and decided today to get our heads around the problem! The problem has been highlighted by a reporting facility that if used to extract a wide date range can take several minutes to produce the report.

We discovered that the browser always displayed the "Internet Explorer cannot display the webpage" message after 63 seconds, firstly we thought this weird because it is the IE error page not a page rendered by ASP.NET 2/IIS 6. So after an age investigating on the net and finding all manner of registry settings that had no effect etc. we set up a test app that simply sleeps our test page for 5 minutes we then managed to deduce that the only setting of consequence was the <httpruntime> attribute of executionTimeout which did within reason do exactly as we thought that is displayed the ASP.NET script timeout error.

However, once the executionTimeout value exceeded 63 seconds we then received the IE page "Internet Explorer cannot display the webpage" and this behaviour was replicated in some form in Firefox, Opera and Safari!

So next we tried running the same page via a remote desktop connection on our server, and guess what, it worked perfectly we then tried from another remote computer using a different ISP and that worked also! Hence we deduced from all this that the problem lies with AVG and after further investigation specifically AVG 8 Web Shield disable this little monster and all works fine.

Hope that helps somebody somewhere because it has been causing us sleepless nights for weeks!

Andy