Web Forms :: Create A Checkboxlist In Page_load Event?
Oct 25, 2010
I have a little question about building controls at runtime.
In my case I would like to create a checkboxlist in my page_load event
[Code]....
This control is a part of a wizard-Control. At the end after clicking the finisch-Button, the selected values have to sent by email to me. My question is, how can I get the ID of the Checkboxlist-Control whitch was build at runtime?I tried following workaround
[Code]....
But I get following error-message:
System.NullReferenceException: Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
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Jun 19, 2010
I open a pop up window by window.open, then after selecting value from grid link i need to move my parent page as i am doing like
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Jan 16, 2010
This should be an easy solution but I get stuck with it and hope I can get some advice/guidance from you:I have a simple aspx page with a Paypal button in it. The code shows in .aspx page:
[Code]....
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Feb 11, 2011
I'm using ASP.NET 3.5 and C#.I load an SqlDataSource into a DataView on my Page_Load event. My SqlDataSource queries arandom record from the database. On my page I have an ImageButton, which when clicked uses a Response.Redirect("AnotherPage.aspx + "random id from database"). My problem is that when the button is clicked it fires the Page_Load event before the Response.Redirect takes place in the button_click event. This causes the current data(the users "id") that I had pulled from the database to be overwritten with new data(a different "id") from the database. So essentially the the page is redirecting to the 2nd random id that is queried from the db after the button is clicked and Page_Load is fired again, not the original id. Here's my code, hope it makes sense.Here's my Page_Load:
[Code]....
Then my Button_Click Event:
protected void btn1_Click(object sender, ImageClickEventArgs e)
{
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Can I put my dataview in another event or method so it's not called when a user clicks an ImageButton. Also I want the DataView to be repopulated on a postback/page refresh, just not on button clicks.
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Jun 29, 2010
I have a GridView, here I am adding the LinkButtons at runtime to the GridView cells. I am also attacing an click event on these LinkButtons.
The issue is that when I populate the GridView from the Page_load the LinkButton click works, but if I move GridView polulation code in the Page_PreRender event the click event doesn't executes.
Code:
private void Page_PreRender(object sender, System.EventArgs e)
{
//does not fires the Click event of dynamically generated LinkButtons
GridView1.DataSource = getDataTable();
[Code]....
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May 31, 2010
I'm working on a web application using VB.NET. In page load event am calling a remote web service which take time to bring the data. During this process none of the other contents on page are shown(render).
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Apr 29, 2010
My aspx page is not showing latest data after reopen the page.. but after save data it shows latest information.
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Jul 12, 2010
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May 24, 2010
I'm using both seprate C# code file and JScript code file
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Oct 19, 2010
Page_load event fires two time in firefox and the same page is working fine in IE. What might be the problem? If it is problem with Autoeventwireup then page_load event must fire two times in IE too. I believe it is not a issue of Autoeventwireup.
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Jan 5, 2010
I have a dynamically created user control which is accomplished usingLoadControl().
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May 20, 2010
I have a TreeView on a page which I will populate the nodes on demand and a checkbox, and they are in the same updatepanel. I can dynamically add new nodes to this treeview. But when I click the checkbox which will cause a postback, the TreeNodePopulate is called before the Page_load and it will regenerate the nodes that was added before. I was very confused how could this be happened. Is this related with PopulateOnDemand and Expanded priorities?
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Feb 16, 2010
Programmatically Loading UserControls with Page_load Event?
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Jan 13, 2010
Pro-grammatically Loading UserControls with Page_load Event?
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Nov 19, 2010
Every time we click on a button. the Page_Load will fire first.
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Jul 21, 2010
I have a web form with two RadioButtons, both use the same GroupName, both have AutoPostback enabled and both have an event handler for CheckChanged. I use tem to show/hide a Panel further down the form which is contained in an UpdatePanel with Conditional Update set and with both CheckedChanged events in the Triggers collection:
[Code]....
Now, the problem arises when I set the Checked property of either RadioButton in Page_Load, which results in the even not firing for the button which was marked as Checked (the event for the radio button whose property was not assigned does get fired). In fact, upon inspecting the source there was no 'onclick' attribute declared for the input element that was marked as checked in the Page_Load, whereas the other RadioButton did have the 'onclick' attribute properly set.
The layout of the form doesn't allow me to place the radio buttons within the UpdatePanel, so that is out of the question. Is the behavior explained above normal? am I missing anything? Both events fire once the assignment to the Checked property is removed from Page_Load.
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Sep 22, 2010
i need when user uncheck item in CheckBoxList do anything for example Response.Write("Hello World"); i want know where to write code ? any event?
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Jan 12, 2010
In my table there is no record then I'm going to hide my formview fields on page_load event,
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Feb 3, 2011
I 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.
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Mar 29, 2010
I found this article [URL] on how to create a customvalidator for the checkboxlist. Followed all the way thru, but when i load my page i get the following error, how can it exist in 2 places? How can i resolve this to use the validation on the page?
Compiler Error Message: CS0433: The type 'CustomValidators.RequiredFieldValidatorForCheckBoxLists' exists in both 'c:WINDOWSMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET Files
oot294f506e54827e67assemblydl3b4b5a368e15533_8dcfca01RequiredFieldValidatorForCheckBoxLists.DLL'and 'c:WINDOWSMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET Files oot294f506e54827e67App_Code.5yh9snf-.dll'
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Oct 22, 2010
I have a checkboxlist (cblTeamMates) with a sqldatasource (sqlTeamMates) that has 3 columns (ID, FullName and Status ). The datavaluefield and datatextfield for cblTeamMates is "FullName" and the 2 status values possible are "Available" and "Absent". How do I go about, in the page load event, checking all the names (FullName) whose Status is "Available"?
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Feb 16, 2011
Does anyone know if it is possible to create a vertically scrollable Checkboxlist WITHOUT using a DIV
I have to build my controls using server code, hence cannot use a div.
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Aug 3, 2010
First, I use vs 2010 and asp.net 4.0.
I have a page, there is a pre-created checkboxlist, for certain people it should be possible to add new checkboxes to the list.How should they do that? Here is what I have in mind.
Next to the checkboxlist there is a button (Add new items), when clicked a popup should be shown, there the name for a column (in a pre-created table MSSQL) can be entered (this column is only a text column), column is created and when clicked ok, the checkbox is added to the list (checkbox binded to the just created column).
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Jan 5, 2010
Why is this simple insert runs twice on Page_Load event causing
page_______________
<%@ Page Title="" Language="C#" MasterPageFile="~/App_Masters/Content.master" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="ExecutiveReview_Default" %>
<asp:Content ID="Content1" ContentPlaceHolderID="PageStyles" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="PageContent" Runat="Server">
left black for test
</asp:Content>
<asp:Content ID="Content3" ContentPlaceHolderID="PageHelpContent" Runat="Server">
</asp:Content>
<asp:Content ID="Content4" ContentPlaceHolderID="PageScripts" Runat="Server">
</asp:Content>
protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack == false)
{
InsertLog();
}
}
private void InsertLog()
{
....executeInsert("insert into someTable (Col1) values ('test')");
}
now when once page is loaded there are two rows with test?
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May 19, 2010
I am thinking this is a pretty simple problem... but I can not get it to function.I just want to get the calendar control to change a date which subsequently modifies a database select statement. I can get the current code to process without error, but the variable set is always a click earlier. Of course, I want the variable to be set upon any change in the calendar control.
public partial class NewBusinessReport : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
[code]...
Does this make sense? I just want it so that when SelectionChanged gets fired the Calendar1SelectCommandDate passes the correct date to the Page_Load page. The error I get now is:"The name 'Calendar1SelectCommandDate' does not exist in the current context"I get that the variable does not exist in the context. That actually seems to make sense based on what I have coded; however, I try to get that variable established and I still seem to be headed in the wrong direction.Basically, I have four calendar controls, one for a date (period 1 start, end and then period 2 start, end). I want to set the program so any change in that date sets off a new Select statement into the SQL server.
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