.net - User Control's Contents Not Created Or Even Parsed?
Sep 1, 2010
I have an ASP.NET 4.0 application with some simple user controls. The user controls work fine on the design surface (VS.NET 2010), but when they're loaded during application execution, nothing shows up.
Furthermore, the various child controls of the user controls are null when referenced inside the code behind for the user control.
The code behind for the user control executes as expected, but any reference to child controls are null.
It's like ASP.NET is never parsing the .ascx to create the instances of the child controls.
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Jul 9, 2010
I have an ASP.NET 4.0 application with some simple user controls. The user controls work fine on the design surface (VS.NET 2010), but when they're loaded during application execution, nothing shows up.
Futhermore, the various child controls of the user controls are null when referenced inside the code behind for the user control.
The code behind for the user control executes as expected, but any reference to child controls are null.
It's like ASP.NET is never parsing the ASCX to create the instances of the child controls.
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Dec 19, 2012
I have gridview. In my griview, i have Fileupload template field.
but, problem is whenever my page get postback fileupload loses its content or selected file.
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Jan 15, 2010
Relevant code from DetailsBERS.ascx file:
<%@ Register Src="BERS.ascx" TagName="BERS" TagPrefix="ucBERS" %>
<asp:Repeater ID="repeatBERS" runat="server"><ItemTemplate>
<tr>
<td id="Td1" runat="server">
<asp:TextBox runat="server" ID="txtTest" Text='<%#DataBinder.Eval(Container, "DataItem.id_bers")%>' MaxLength='<%#DataBinder.Eval(Container, "DataItem.id_bers")%>' />
<ucBERS:BERS ID="ucBERS" runat="server" IdBers='<%#DataBinder.Eval(Container, "DataItem.id_bers")%>' />
</td>
</tr>
</ItemTemplate></asp:Repeater>
[Code]....
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Feb 10, 2010
I have a dynamically created address user control (on a customer administration screen) that is created through the use of a place holder. A customer can have multiple addresses, so they dynamically dropped onto the page.
I have got this far, but now I need to be able to save the updated addresses for the customer but I can't get any event to fire on the user controls. When I check to see run plhAddress.HasControls() it returns false?
The way I am generating the user controls is as follows.. private UserControl LoadControl(string UserControlPath, params object[] constructorParameters)
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Oct 26, 2010
I have a checkbox on my page that must be ticked and to validate it I am using a custom method as below. The problem is that I now put the checkbox and method within a Create User Wizard custom tempalte and when I submit the form it does not activate the validation check. If I put a normal button on the page outside the tempalte it works. Not sure If I a missing something. Perhaps I can activate it in Created User Event handler in code behind. All Button in my create user Event.
<asp:Button
ID="StepNextButton"
runat="server"
CommandName="MoveNext"
OnClientClick="ShowMP();"
align="middle"
CausesValidation="True"
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my Profile"
/>
aspx
<asp:CheckBox ID="Terms" runat="server" />
<asp:CustomValidator ID="valTandCs" ClientValidationFunction="ValidateTandCs" runat="server" ErrorMessage="Please accept Terms and Conditions before submitting."></asp:CustomValidator>
Javascript
<script language="javascript" type="text/javascript">
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args.IsValid = document.getElementById('<%= Terms.ClientID %>').checked;
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Mar 1, 2011
I have a gridview called gvResults. In the gvResults_RowEditing event I add a row below the one selected. In that new row, which spans all columns, I insert a user-control. There are two buttons and some textboxes in the user control.
My problem is that when I click one of the user-control buttons it never gets to the button event handler, I think because the user control is not recreated on the page postback. How can I have the user-control events fire before the parent page events fire?
I tried using an update panel, but I still get the parent posting back before the user-control events.
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Mar 4, 2010
This is what I have in the RegisterUser.aspx and yet when the admin registers a new user, then on clickiing the register button, the site logs in as the user who was just created.
protected void CreateUserWizard1_CreatedUser(object sender, EventArgs e)
{
Roles.AddUserToRole((sender as CreateUserWizard).UserName, "Department");
}
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Mar 4, 2010
I have the membership provider and the create user with tow steps, one of the steps contains a custom registration form, for each created user data will be in the database, and there is an account page shows the data that the new created user did insert during the registration process on the custom registration page,
the problem, when the user is created and logged into his account page, this account page shows only the information for the first created user, not the info on the logged in user , but the logged in user data still saved in database and not showing on his account page?
This is web.confg code:
<?xml version="1.0"?>
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Nov 10, 2010
Our application lets the administrator create new users. Since the administrator is logged in, I have set Logincreateduser = false so that the administrator is not logged out even after creating the new user.
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Aug 16, 2010
I have used asp.net wizard inside update panel. Well in this, i have used combo box in second wizard and i have assigned integer character to combo. This gives an error while i press next button. But this works in 1st wizard page fine if i load it for the first time. For this code is as below:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="WizardTest.aspx.cs" Inherits="WizardTest" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
[code]...
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Mar 20, 2011
I am getting the following error using an update panel with a gridview.
Microsoft JScript runtime error:Sys.WebForms.PageRequestManagerParserErrorException:
The message received from the server could not be parsed.Common causes for this error are when the response is modified by calls to Response.Write(),response filters,HttpModules,or server trace is enabled.
I have looked at all the "fixes" for this and none of them seem to be working.It works just fine on page load but when I click my async button,One row of the grid processes(I can look in the javascript debug) but after the firstrow is processed,I get the above error at this line.
try {
_this._webRequest.completed(Sys.EventArgs.Empty);
}
finally {
if (_this._xmlHttpRequest != null) {
_this._xmlHttpRequest.onreadystatechange = Function.emptyMethod;
[code]...
I am completely stumped here,
Here is my AJAX Response from FireBug
14008|updatePanel|ctl00_ContentPlaceHolder_UpdatePanel1|
<table border="0" cellpadding="2" cellspacing="0" width="100%" id="Table3">
<tr>
[code]...
What I do in this code is convert a BLOB value from a database and store it in a string in a custom object.What seems to be happening is that there are odd characters being put at the end of the string.Here is what I am doing to convert the data
byteBLOBData = (Byte[])(row[3]);
row["data"] = System.Text.Encoding.UTF8.GetString(byteBLOBData);
[code]...
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Jul 27, 2010
The error is this:
Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled.Details: Error parsing near '<!DOCTYPE html P'.
It appears in both FF and IE so far, and only happens on the live servers.
It occurs within partial (or attempted partial as they stop working and don't update) postbacks within an update panel on a form that is on every page. It doesn't always do it, but once it's broken, it's consistent. I have a suspicion that it kicks in after the pages in question have been posted back to by another page, but I'm not 100% about this. This form is absolutely integral to the function of the site.
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Jun 4, 2010
I don't think I understand fully how ASP.NET does inheritance of controls.I have a user control, ucBase, which has an asp.net label in the ascx file. Code behind references the label and it works fine during run time if the control is not a parent for another user parent.
If I have another user control, ucChild, inheriting from ucBase, the label in ucBase's code is always null. ucChild has no controls in its ascx fileThe server controls (like the label) needs to be declared in the ascx file and not created programmatically.What needs to be done for ucBase to see its own controls when it's a parent user control?
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Apr 15, 2010
i have problem in using ajax control , till morning it everything was file , now when i add any new ajax control it shows the error Control canot be created because visual studio cannot find the control's type in the control assembly then if i press OK it says The operation could not be completed . invalid FORMATETC structure
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[Code]....
NOTE: These are System.Web.UI textboxes, so I can't use text delgate and Invokes (which is the usual solution I have seen)
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Apr 1, 2010
I have a grid within another grid. In the detail grid I have image button for which I am giving the URL of documents in the source itself. On clicking on Image button, document can be opened for which I am using a Handler. The code for opening the document is written in the handler.This code is as below:
[code]....
The document can be opened when clicked on Image Button. but, the problem is taht after opening the document, I am unable to perform any other action in the grids.... Other actions like...selection in checkboxes(master grid contains few check boxes),other link buttons in detail grid....etc etc...I am getting the following errr:
PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled
This is because after opening any document,for any action again Handler is being called.
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I have the following source code, but it is not working properly. All 3 panels popup OK. but in Panel3 I have a RadioButtonList that changes the date in the BeginDate and EndDate dropdowns. But what happens is that when the posback happens Panel 2 Reappeals overlapping Panel3 just a little. When I click on continue I get the following error.Microsoft JScript runtime error: ys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled.
Details: Error parsing near '<script>window.open('.Can anyone help me figure out this error. My coding might not be right? Here is my code.
[Code]....
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Jun 11, 2012
i want to change contents in content place holder based on the user logged in or logged out
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Dec 14, 2011
c# code to print a contents of a gridview and along with header and footer.
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Feb 22, 2010
I have a pdf file, how can I extract the contents of the pdf file and show the contents in one of my web page
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i want to get the contents of a textbox and set them to a asp label for output, we can cause a postback to if that makes it easier, so far i did this and it comes up trumps
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Mar 7, 2011
I am having one doubt regarding the use of static variable in Asp.net pages.I am having one page say UserDetails.aspx.In this page, I have one static variable to store some data specific to a user. So, will this ?
public partial class UserDetails
{
static int numberOfReviews=0;
[code]...
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