ASP.NET

30-Jul-09 8:03

Hello I am trying to create linkbutton controls that are supposed to fire method. I add them to pageload however I am told that I should add them before it. I google the lifecycle and I found 2 events Init and PreLoad, I tried them and they are really fired before page_load however this time the controls even do not appear. here is the code:

protected void Page_Preload()
{
for (int i = 1; i <= 2; i++)
{
LinkButton bottomLink = new LinkButton();
LiteralControl bottomLiteral = new LiteralControl(" ");
bottomLink.Text = i.ToString();
pnlBottom.Controls.Add(bottomLink);
pnlBottom.Controls.Add(bottomLiteral);
bottomLink.OnClientClick += new EventHandler(this.changeLink);

}
}

it is drawing me crazy please help.

Abhijit Jana30-Jul-09 8:12

30-Jul-09 8:12

Ersan Ercek wrote:
protected void Page_Preload()

Where is parameter Object and EventArgs ?

Try this. Its work for me Big Grin | :-D

protected void Page_Preload(object sender, EventArgs e)
    {
        for (int i = 1; i <= 2; i++)
        {
            LinkButton bottomLink = new LinkButton();
            LiteralControl bottomLiteral = new LiteralControl(" ");
            bottomLink.Text = i.ToString();
            pnlBottom.Controls.Add(bottomLink);
            pnlBottom.Controls.Add(bottomLiteral);
            bottomLink.Click += new EventHandler(bottomLink_Click);
         }
    }

I will suggest you to create all the control on Pre_Init()

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
View My Latest Article

Ersan Ercek30-Jul-09 8:20

30-Jul-09 8:20

Thanks for the reply but it is not working. Smile | :)

. That why I am getting crazy. Smile | :)

Do you think pnlBottom (panel) would be created before_preinit, since I added it on HTML page...

Thanks again.

Abhijit Jana30-Jul-09 8:26

30-Jul-09 8:26

Ersan Ercek wrote:
Do you think pnlBottom (panel) would be created before_preinit, since I added it on HTML page

you means, like this way ?

<asp:Panel ID="pnlBottom" runat="server">
 </asp:Panel>

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
View My Latest Article

Ersan Ercek30-Jul-09 8:27

30-Jul-09 8:27

Excatly... do you think this is the problem?

Abhijit Jana30-Jul-09 9:01

30-Jul-09 9:01

I did the same and I got two link in my page "1" and "2" .

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
View My Latest Article

Ersan Ercek30-Jul-09 9:17

30-Jul-09 9:17

does the link or the code you attached work?

Ersan Ercek30-Jul-09 9:28

30-Jul-09 9:28

okay I solve the problem for now Smile | :)

onclientclik ? what was that? Smile | :)

I changed it with click Smile | :)

Abhijit Jana30-Jul-09 9:31

30-Jul-09 9:31

Ersan Ercek wrote:
onclientclik ? what was that? Smile I changed it with click Smile

So, You didn't checked my code that I have replied on First time. D'Oh! | :doh:

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
View My Latest Article

Ersan Ercek30-Jul-09 9:32

SelectedIndexChanged Event for Dropdownlist AJAX

30-Jul-09 9:32

no i did not...

Ridge Howison30-Jul-09 7:06

Ridge Howison

30-Jul-09 7:06

Hello,

Thank you for reading. Here is my situation. I have an UpdatePanel and within in I have 2 dropdownlists.   I want to show the second ddlist only when a specific value is chosen in dropdownlist1. I used Javascript/label etc on the selectedIndexChanged event but still does not work. The event gets fired and I stepped thru the code with no problems but it does not render on screen. Code snippet below. All help is wonderfully,gratefully and thankfully appreciated.

Front End

<asp:UpdatePanel ID="updPanel1" runat="server">
            <ContentTemplate>
         <asp:DropDownList ID="ddlTest1" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddlTest1_IndexChanged">
            <asp:ListItem Value="" Text="Select one"></asp:ListItem>
            <asp:ListItem Value="Matt" Text="Matt"></asp:ListItem>
            <asp:ListItem Value="Robin" Text="Robin"></asp:ListItem>
            </asp:DropDownList>
            <asp:DropDownList ID="ddlTest2" runat="server" style="visibility:hidden;display:none;">
            <asp:ListItem Text="Select One" Value=""></asp:ListItem>
            <asp:ListItem Text="Tom" Value="Tom"></asp:ListItem>
            <asp:ListItem Text="John" Value="John"></asp:ListItem>

      </asp:DropDownList>
</ContentTemplate>
            </asp:UpdatePanel>

And the Codebehind is as follows:

Protected Sub ddlTest1_IndexChanged(ByVal sender As Object, ByVal e As EventArgs)
            If ddlTest1.SelectedValue = "Robin" Then

                  Dim script As String = "<script type='text/javascript'>var elem=document.getElementById('" & Me.ddlTest2.ClientID & "');elem.style.visibility='visible';elem.style.display='block';</script>

Page.ClientScript.RegisterClientScriptBlock(Me.GetType(), "newKeyVal", script, True)

            Else
                  Dim script As String = "<script type='text/javascript'>var elem=document.getElementById('" & Me.ddlTest2.ClientID & "');elem.style.visibility='hidden';elem.style.display='block';</script>"
                  Page.ClientScript.RegisterClientScriptBlock(Me.GetType (), "newKeyVal", script, True)

            End If

      End Sub

Re: SelectedIndexChanged Event for Dropdownlist AJAX

Abhijit Jana30-Jul-09 8:14

Re: SelectedIndexChanged Event for Dropdownlist AJAX

30-Jul-09 8:14

Do not put the both Dropdown list in Same Update Panel. Place it in two different Update Panel and Make the UpdateMode="Conditional" for the Second Updatepanel and call UpdatePanel2.Update() from SelectedIndexChanged event of Dropdownlist1.

Hope this will help you Big Grin | :-D

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
View My Latest Article

Abhishek Sur30-Jul-09 8:59

Abhishek Sur

30-Jul-09 8:59

Hey... Why do you require to pass a script to the client and process to change the visibility of the control, when you simply can change Me.ddlTest2.Visible = false

By this way you are eventually making your response smaller, as if a servercontrol visible is false, it will not rendered to the client. Rose | [Rose]

Or if you need Javascript fix, just use simple AJAX call (May be using ICallBackEventHandler) from the Javascript, and get the status of the Clientside control, and do display=none from javascript.

Dont need UpdatePanel for such a small need.. . Rose | [Rose]

Abhishek Sur

My Latest Articles
Working with Excel using MDAC

Basics on LINQ and Lambda Expressions

Create .NET Templates

System.Runtime.InteropServices.COMException: Cannot activate application

vikash_singh30-Jul-09 4:56

Re: System.Runtime.InteropServices.COMException: Cannot activate application

30-Jul-09 4:56

hi guys please help me !
iam using "Microsoft.Office.Interop.Word.ApplicationClass" for exporting data from DB to word document. it works fine on server where i published the application. but from my machine is shows the following error:-"System.Runtime.InteropServices.COMException: Cannot activate application"

code is.......

public static bool Export( string questionID, int questionNumber, object filename )
try
{
bool result=false;
object missing = System.Reflection.Missing.Value;
Microsoft.Office.Interop.Word.ApplicationClass wordApp = new Microsoft.Office.Interop.Word.ApplicationClass();
Microsoft.Office.Interop.Word.Document wordDoc = wordApp.Documents.Add( ref missing, ref missing, ref missing, ref missing );

...................

wordApp.Selection.TypeParagraph();
wordDoc.SaveAs( ref filename, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing );
wordDoc.Close( ref missing, ref missing, ref missing );
wordApp.Application.Quit( ref missing, ref missing, ref missing );
return result;
}
--------------------
1. already i configured security setting for word in DCOMcnfg(added network service, aspnet and set access permission to full control and rebooted the system) though iam getting the same error.

2. i changed application platform to x86 still problem continues.....

waiting for help !

thanx

Abhishek Sur30-Jul-09 5:00

Abhishek Sur

30-Jul-09 5:00

Code looks good.

Do you have the same version of office installed?

Is it Office 2007 installed in your machine?

Abhishek Sur

My Latest Articles
Working with Excel using MDAC

Basics on LINQ and Lambda Expressions

Create .NET Templates

Re: System.Runtime.InteropServices.COMException: Cannot activate application

vikash_singh30-Jul-09 5:33

Re: System.Runtime.InteropServices.COMException: Cannot activate application

30-Jul-09 5:33

yes, we installed ms-office 2007

vikash_singh30-Jul-09 6:56

Re: System.Runtime.InteropServices.COMException: Cannot activate application

30-Jul-09 6:56

i removed worddoc.active() function from code bcoz it was showing error in server. so now after publishing i am getting new error....

error is:---

System.Runtime.InteropServices.COMException: Word has encountered a problem.

Abhishek Sur30-Jul-09 9:10

Abhishek Sur

30-Jul-09 9:10

Hey..Is it the same old problem with Word Templates being corrupted. Open word manually and see.. if it crashes or not.

If it is the same problem, then you need to get Normal.dot file and replace it with your one.

D'Oh! | :doh:

Abhishek Sur

My Latest Articles
Working with Excel using MDAC

Basics on LINQ and Lambda Expressions

Create .NET Templates

Re: System.Runtime.InteropServices.COMException: Word has encountered the problem

vikash_singh30-Jul-09 23:16