ASP.NET

12-Oct-06 18:33

Is there a way to retain the layout of the TreeView (e.g. which nodes are expanded and which are not) between postbacks. If I set a certain expansion level, it will expand all of the nodes to that level. If I set that to zero, everything is collapsed after the postback even though I've expanded the treeview to drill down to the item I'm working on. This would make the treeview almost pointless if there is no way to retain where you are currently navigation wise.

Any ideas?

Thanks for your help.

-Matt

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The 3 great virtues of a programmer:
Laziness, Impatience, and Hubris.
--Larry Wall

minhpc_bk13-Oct-06 0:40

13-Oct-06 0:40

Hi Matt,
Actually, the TreeView control retains its state on postback, but if you happen to call the Expand method of the TreeView control, all the tree nodes are expanded based on the specified level. To drill down to the node that you are working on, you may consider using the method of the TreeNode instead of the TreeView.

perlmunger13-Oct-06 4:05

13-Oct-06 4:05

Thanks for your response. I appreciate it.

I'm not able to get the behavior that you have mentioned. I went back through my code and made sure I'm never calling expand or collapse and I still have all nodes collapsed when I click one of my links in the view. The only other possibilities I can think of are:

1) My ExpandDepth property is set to 0

2) I am loading the data dynamically when !IsPostBack

Any other ideas?

Thanks.

-Matt

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The 3 great virtues of a programmer:
Laziness, Impatience, and Hubris.
--Larry Wall

minhpc_bk15-Oct-06 16:20

15-Oct-06 16:20

Sorry for my late reply because of the weekend, if you already manage to solve your issue, you can skip my below questions:

+ Do you populate the TreeNodes on demand or you simply load all nodes in the Page_Load with the checking on the !IsPostBack.
+ How do you set the SelectAction property of the TreeNode.
+ I guess that I may easily figure out the cause when I see your code snippets.

perlmunger16-Oct-06 4:28

16-Oct-06 4:28

minhpc_bk wrote:
+ Do you populate the TreeNodes on demand or you simply load all nodes in the Page_Load with the checking on the !IsPostBack.

I load all of the nodes in the Page_Load with checking !IsPostBack

minhpc_bk wrote:
+ How do you set the SelectAction property of the TreeNode.

It doesn't look like I'm setting the SelectAction property, so whatever the default is.

minhpc_bk wrote:
+ I guess that I may easily figure out the cause when I see your code snippets.

Code snippet wise, there's really not much to show. I simply call LoadNavTree() which loads data into each of my six root nodes. I have a data access layer that returns a list of objects--one type of object for each of the six root nodes.

-Matt

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The 3 great virtues of a programmer:
Laziness, Impatience, and Hubris.
--Larry Wall

minhpc_bk17-Oct-06 0:20

17-Oct-06 0:20

Do you set the value for the TreeNodes when you load data into the nodes? Also do they have different values or the same value?

perlmunger17-Oct-06 3:41

c#: Problem linking control to OnClick event

17-Oct-06 3:41

They might have the same value, but a different ValuePath. That is, some top level nodes have children with the same values as other top level nodes. The path to each node, however, is always unique.

-Matt

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The 3 great virtues of a programmer:
Laziness, Impatience, and Hubris.
--Larry Wall

Goalie3512-Oct-06 9:46

Goalie35

12-Oct-06 9:46

I'm running c# in the v1.1 framework and I'm trying to use an onClick event in an imagebutton (I named it "btnLogin") control on my Index.aspx page. The problem however is I keep getting the following error:
--------------------------------------------------------------------
Compilation Error: Method 'Index.btnLogin_Click(object, System.EventArgs)' does not match delegate 'void System.Web.UI.ImageClickEventHandler(object, System.Web.UI.ImageClickEventArgs)'
-------------------------------------------------------------------

I originally created this control in the 2.0 framework and had no problem with it. Now, however I needed to downgrade to version 1.1 and I've been experiencing this problem.

Here's my imagebutton control on my aspx page:
------------------------------------------------------------------
<asp:ImageButton ID="btnLogin" runat="server" ImageUrl="images/button_login.jpg" OnClick="btnLogin_Click" />
--------------------------------------------------------------------

...and here's my method in my code:
--------------------------------------------------------------------
public void btnLogin_Click(object s, System.EventArgs e)
{

}
--------------------------------------------------------------------

If it helps, here's how I created my btnLogin control in my code:
-------------------------------------------------------------------
protected System.Web.UI.WebControls.ImageButton btnLogin;
--------------------------------------------------------------------

...and last but not least, here's my aspx page header:
--------------------------------------------------------------------
<%@ Page Language="c#" AutoEventWireup="false" Inherits="Index" CodeBehind="Index.aspx.cs" %>
------------------------------------------------------------------

Any ideas as to what I'm doing wrong?

Thanks.

-Goalie35

Re: c#: Problem linking control to OnClick event

Private_Void12-Oct-06 11:14

Private_Void

12-Oct-06 11:14

I have never experienced this specific error, but I have had issues with conversion from 1.1 to 2.0. I realize you are doing the opposite. There are different events for the differet controls from one framework to another. I would go back to the "auto generated code" and check to see if my actual events exist under the framework.

I hope this helps you.

Regards

how do i add datagrid controler and funcionality to a web composite control

Lior S12-Oct-06 8:46

Lior S

12-Oct-06 8:46

Hello,

I'm trying to add a gridview control to composite web control that i have created.

is there any specific way to add this control on the render writer?

thanks,

Lior

Re: how do i add datagrid controler and funcionality to a web composite control

minhpc_bk13-Oct-06 0:47

Retrieving Uploaded Files

13-Oct-06 0:47

You might want to check out Dino's article[^].

Ennis Ray Lynch, Jr.12-Oct-06 8:44

Ennis Ray Lynch, Jr.

12-Oct-06 8:44

Please read before answering:

Using Javascript I dynamically create file inputs in a table (<input type="file" id="fileInput">). When the user is finished (including deleting files if they change their mind) I have a submit button. The form that wraps all of the objects is set to run at server with the enctype of multipart/form-data.

My problem is when the form posts, I can't get the data. The HttpFileCollection of the HttpRequest is empty. And I know of no way to access the files. I know the files are being uploaded because the content length is correct. Traversing the HttpRequest object from break point yeilds no clues either.

How can I access uploaded files? My objective is to select any number of files to upload without doing a post back and when the user has finished selecting all files do the post back at the end.

On two occasions I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question. - Charles Babbage

Correction

Ennis Ray Lynch, Jr.12-Oct-06 8:54

Ennis Ray Lynch, Jr.

12-Oct-06 8:54

The content length is not correct.

Can we use AJAX in .NET 1.x ? [modified]

Sreenath Madyastha12-Oct-06 7:30

Sreenath Madyastha

12-Oct-06 7:30

I am new to this. Can we use AJAX in .NET 1.1 ? I read in ajax web site that they provide ajax_xxxx.dll to develope app.

Any thoughts ?

-- modified at 13:43 Thursday 12th October, 2006

Re: Can we use AJAX in .NET 1.x ?

Christian Graus12-Oct-06 7:42

Christian Graus

12-Oct-06 7:42

AJAX doesn't requirre .NET at all. do you mean ATLAS ?

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: Can we use AJAX in .NET 1.x ?

Christian Graus12-Oct-06 7:45

Christian Graus

12-Oct-06 7:45

BTW, I moved this to the ASP.NET forum prior to you being flamed to a crisp on the lounge. No programming questions are allowed in the lounge Smile | :)

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

record locking in vb.net

amaneet12-Oct-06 5:36

amaneet

12-Oct-06 5:36

Sir,
I am developing a intranet application.Around fifty five computers are accessing the server and database(SQL Server 2000) which is also in the server.

Now the problem is I want to lock the record when the particular record is being updated.I want to implement this thing.

Please help.
Thanks

Re: record locking in vb.net

minhpc_bk12-Oct-06 15:03