C# - Can't Access Controls In Page_Load?
Jan 11, 2010I have a simple .ascx file
<%@ Control Language="C#"
AutoEventWireup="true"
CodeFile="Profile.ascx.cs"
[code]...
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Adding Controls On Page_Load?
Apr 23, 2010As far as I know if you want to dynamically add controls it should be done on Pre_Init event.I tried to add them on Page_Load and it still works. Controls restore state after postpack, everything looks all right.Is it always like this?(because for me it's easier to use Page_Load event, because it is fired from outermost to the innermost control)
View 12 RepliesWeb Forms :: Hiding Controls On Page_Load?
Dec 1, 2010I have a page with four panels. On page load all the panels are visible. there are radio buttons YES and NO. i have written java script such that if YES is clicked, certain panels are displayed and if NO is clicked, other panels are displayed.Now my problem is, on page load i dont want all the panels to be visible. If i use <control>.visible = flase on page load for those panels, java script is throwing error "Object Missing" when those radio buttons are clicked.
View 2 RepliesC# - Accessing Controls Values Before Finishing Page_Load?
Jun 16, 2010I'm creating a table with some controls and I want to save all control values in every postback. As the controls are just defined after the page_load, I can't solve my problem this way:
object o;
protected void Page_Load(object sender, EventArgs e)
{
o = createObject();
Create_Table();
if (Page.IsPostBack)
Save_Data();
}
I thought I could execute Save_Data() at the begining of every postback event, but I think that should exist a better way to solve my problem.
Web Forms :: Controls Disappear Between LoadViewState And Page_Load?
Apr 7, 2010In a project of mine I dynamically create controls and add them to the nodes of a radtreeview (a control by telerik) in theLoadViewState event. By the end of this event everything seems fine, but as soon as the
Page_Load event fires the controls have disappeared. No code of mine is executed during this phase.
I'd love to know why this is the case,
Forms Data Controls :: How To Fill A Formview At Page_load
Sep 12, 2010I have a formview and I want to fill it at page_load. The formview must show the data of the person that has logged in.So the question is how can I fill the formview so that is shows the data of the right person (UserId = @Param2) so that the formview is in editmode?
[Code]....
DataSource Controls :: Refer To Fields In ObjectDataSource During Page_Load?
Jan 5, 2010At first, I had my datalist being populated by my class 'PM' - I did it all inside the Page_Load event. Since there was a dataset being returned, I could assign different variables to fields in the Datatable, like:
[Code]....
Now, for reasons I won't go into here, I'm changing to an ObjectDataSource, using the same method to do the 'Select' of data... How can I do the same variable assigning, with the ObjectDataSource?
Forms Data Controls :: GridView Binding On Page_Load
Jan 8, 2010I have a GridView that binding on Page_Load, and that is not the intent. Ideally, the GridView only loads on PostBack.
[Code]....
[Code]....
The bindClientDropDownList, by the way, does not call SearchResultsGridView.DataBind() on its own, so that can be ruled out.
Forms Data Controls :: NestedGrid Fires Page_Load Twice?
Apr 16, 2010I have a web page with a nested grid. I bind the nested grid via the outer Gridviews RowDatabound. The problem I'm having is when a user click on a CommandField in the nested child grid the Page_Load event is fireing twice and reloading the grids, making it appear that the nest grid collapsed. I have tried using "If Not Page.IsPostBack" but because the page posts back twice the IsPostBack is false until the second time the Page_Load event fires.
Here is my Page_Load routine
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim test As Boolean = ScriptManager.GetCurrent(Me.Page).IsInAsyncPostBack
If Not Me.Page.IsPostBack Then
If Not ScriptManager.GetCurrent(Me.Page).IsInAsyncPostBack Then
[Code].....
Forms Data Controls :: Call Gridview.selectedindexchanged From Page_load Even?
May 10, 2010I want to automatically call the gridview's selectedindexchanged procedure on the first page_load event.
Can someone show me how this is done in C#?
Forms Data Controls :: FindControl Dropdownlist In ListView ItemTemplate In Page_Load?
Jun 29, 2010I'm trying to do a relatively simple thing, but just cannot get it to work. I'm trying to find a dropdownlist within a ListView ItemTemplate within Page_Load.
This is the code
[Code]....
And this is the C#
[Code]....
I have also tried without this > this.ListView1
Forms Data Controls :: Hide Formview Fields On Page_load Event?
Jan 12, 2010In my table there is no record then I'm going to hide my formview fields on page_load event,
it gives an error "object reference not set to an instance of an object".
How can I hide fields in formview all mode?
Forms Data Controls :: Set A Button Enable To False On Page_load When Part Of A Gridview?
May 10, 2010I have a set of 4 buttons which part of a gridview template and I load the gridview on page_load. The datasource for the gridview comes via my controller as I am using Microsoft's Model View Controller design pattern. I set 4 public properties for each of the 4 buttons, which I can access in my controller class/method. However, when I call the method for the gridview, which sets the datasource for it on page_load, I get an error message when I try to set the enable to false. It says "Object not set to instance of object". The objective I am trying to do here is a check on a returned value, which I can achieve, and based on the return of the value that is returned, to either set the button enable to true or to false.
Unfortunately, I am getting this Object not set to instance of object error message, and I do not know how to resolve it.
Forms Data Controls :: ListView Ajax - Use A LinkButton Then The Page_Load Event Is Fired?
Feb 3, 2011I have discovered something strange when using a ListView. I have a listview contained inside an uodate panel and everything works OK until I edit the editItemTemplate to use a LinkButton instead of a Button.When i use a LinkButton then the Page_Load event is fired.
View 3 RepliesForms Data Controls :: Throw The Exception Back To Page_Load Error: ArgumentNullException Was Unhandled By User Code
Nov 19, 2010I'm trying to throw the exception back to Page_Load but the throw statement causes error: ArgumentNullException was unhandled by user code. How can that be fixed? Also, I can't see Label1.Text displayed on the page after the ArgumentNullException occurs because the page is not re-load. If there is no exception, it's fine to not reload the page. How can I see the Label1.Text displayed?
protected void Page_Load(object sender, EventArgs e)
{
try
{
...do something here...
}
catch (ArgumentNullException ae)
{
System.Diagnostics.Debug.Write(ae.Message);
Label1.Text = ae.Message;
Label1.Style.Add("visibility", "visible");
}
catch (Exception ex)
{
...do something here...
}
}
protected void ImageButton1_Click(object sender, ImageClickEventArgs e)............................
DataSource Controls :: How To Access Database Once With Big Resultset Or Access Multiple Times On The Fly
Jun 17, 2010I have a situation where I am accessing a database multiple times and I'm wondering if it is necessary.
I have a GridView with a template column with a hyperlink to "Get Results" and on the RowDataBound event I have it check the batch number against the database and see if results exist and then if they don't, hide the link.
So when viewing the page if there is 20 rows in the gridview it is effectively doing 20 queries.
I was wondering if it is a better idea to query the database once with all "batches" and load it into a datatable, then on the RowDataBound event query the datatable. The only issue I see with this is there is currently 40,000 batches and grows daily.
Access :: IIS_WPG Write/modify Access To The Folder Where MS-Access Database Is Located - Insert An Error Pop-up?
Feb 17, 2010Is there anything missing in IIS 6.0 that prevents me from (Insert into table) using MS-Access?
Explain: The application works fine under Visual Studio 2008 IDE the insert into table works fine with no error, Also I tested with hosting provider and works fine with no problem. but now I have published the same exact app in a dedicated server windows 2003 with
IIS 6.0 .NET framework 2.0 with latest service pack I gave IIS_WPG write/modify access to the folder where MS-Access database is located and database but at the time of insert an error pop-up. I need to install in the Server or settings in the IIS to recognize my MS-Access db is it some office runtime that I am missing. (BTW I am using OLEDB connection string in my C# )
Using System.Data.OleDb;
I can retrieve data off of it with no problem but when I try to insert is when it fails I thought the problem was Access Rights but I do not think is the case.
How To Run Script Every Page_Load
Mar 18, 2010This is probably a really simple question, but I'm looking for a way of running a particular script on my website which will be ran every time a page is loaded. Basically it to work as if the script is in every .aspx Page_Load of my project.
I tried putting the script in the Application_Start event of the Global.asax file, however I noticed this didnt always run.
C# - Run Code For Every Page_Load?
Mar 18, 2011I need to do HTML code manipulation for every loaded page in my ASP.NET application. Where is the best place to put my method? Put code into every web page Page_Load event in not very smart, what other alternatives?
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Jul 7, 2010I have a class named PageBase inheriting from ASP.NET Page. I want to do something in PageBase's Page_Load.All pages in my application have their logic done on their Page_Load. I'm thinking of a way that Page_Load of both of PageBase and other pages run without having to override Page_Load in pages. Is it possbile?
View 1 RepliesC# - Page_Load Vs OnLoad?
Mar 19, 2011Why DisplayUsers(); doesn't work?My base page is:
public class adminPage : System.Web.UI.Page
{
protected override void OnLoad(EventArgs e)
[code]...
Page_Load Vs Page_InitComplete?
Apr 3, 2011I've seen programmers writting in Page_Load like
protected void Page_Load(Object sender, EventArgs e)
{
if(!IsPostBack)
[code]...
Forms Data Controls :: FormView Clearing Value Set In Page_load / Initialize A Date Field In The FormView to Today's Date?
Sep 2, 2010I have a page with a FormView on it. The page is strictly for adding records to a Table. I have the FormView bound to an EntityDataSource and everything works greate except for one thing.
I want to initialize a date field in the FormView to today's date. So, in my page_load event I have:
if (!Page.IsPostBack)
{
//Initialize SetupDate to today.
TextBox setupdate = (TextBox)fvJob.FindControl("txtSetupDate");
setupdate.Text = DateTime.Now.ToShortDateString();
}
The first time this page loads, the txtSetupDate field is initialized.
Although, and subsequent loads of the page doesn't initialize the Text Box. I step through the code in the debugger and I can see that the code is executig, but something (the FormView bind?) is "clearing" the Text Box.
How To Show Message In Page_load
Jun 19, 2010I have a image file upload page, a zip file is uploaded and unzip on server, then all image files are read and insert into SQL server.
I want to show a message just after processed one image file, image filename, success or failed, then process next image file until finish.
What can I do?
FireFox Running Page_Load Twice?
Feb 25, 2010I am having a problem with FireFox, I have an app using VS 2008 and it is using a Wizard control. Under IE the app only runs Page_Load once but FireFox is running it twice which would'nt be a big deal except the second time it is not going through as a post back so all of my setting are getting reset as if it was the first time through. I have see in previous post that the problem was autoEventWireup needed set to False, well mine is. I am using Ajax and UpdatePanel.
View 3 Replies