Web Forms :: Trigger A Postback Or Self Refresh A User Control?
Jun 5, 2010
I need to trigger a postback or self refresh a user control from one of the functions in the same user control.
Problem is that I am setting the selected value of a dropdown control in this usercontrol but it does not actually show up until after a postback.
This I came to know after I found that the said drop down shows the current value only after I click on another button.
I need to do this on the server side in the function given below:
public void FillDropDown()
{
FillProgramList(select);
//if (Request.Cookies["prgname"] != null)
//{......
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Similar Messages:
Jan 27, 2011
I have around 8 user controls on a page with a form in each of them. I have a dropdown list that allows you to select a form, with a selectedindexchanged event that hides the current form and shows the requested form.
There is some javascript that needs to fire when each form loads. Now, when you click on a form for the first time, the javascript fires as it should, but if you click the dropdown to change the form, then click back to a previous form, the javascript doesn't fire (because the user control is already loaded).
Is there anything I can do to trigger a postback, or reload/refresh the user control whenever an option is selected from the drop down?
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Aug 5, 2010
I want to create a dynamic, role-based tab control that doesn't trigger a postback when the user switches between tabs.
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Mar 2, 2011
I have got a query regarding the usage of delegate in usercontrols. The scenario is I have got a user control which acts as a footer
on all the pages, It has the following place holders : Email, Print, Logout.
What I want to acheive here is when the customer logged in he/she has certain feauture's on the website for instance his/her personal diary,
dieting charts, birthday calender etc. I have figured out a way to create pdf's of each summary , what I am looking for is how to use the usercontrol
for instance when the customer clicks on the email place holder on certain page which is in the footer usercontrol, the following place holder should send
an email with the pdf file of that particular page attached to the customer. I came to know that delegate is the best way of doing it, but I cant find any specific tutorial on it.
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Jan 22, 2010
I am having an issue with a user control that contains a dropdown and a validator. I created a property for the "CausesValidation" property on the dropdown and set it to false. And yet the dropdown is still triggering the validator. I am having issues with this elsewhere as well including on my ModalPopup.
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Apr 12, 2010
What i am trying to do here is to show a couple of validation messages in form of a bulletlist, so i have a Div on my master page containing a asp:bulletlist. Like this:
<div>
<asp:BulletedList ID="blstValidationErrorMessage" runat="server" BulletStyle="Disc">
</asp:BulletedList>
</div>
When i then click the Save button from any of my pages (inside the main contentPlaceHolder) i create a list of messages and give this list as datasouce like this:
blstValidationErrorMessage.DataSource = validationMessageCollection;
blstValidationErrorMessage.DataBind();
The save button is located inside an updatepanel:
asp:UpdatePanel runat="server" ID="UpdatePanel" ChildrenAsTriggers="true" UpdateMode="Conditional">
Nothing happens, i can see that the datasource of the bulletlist contains X items, the problems must arise because the Save button is inside an update panel and the elements outside this updatepanel (master page controls for example) is not refreshed.
So my question is, how do i make the bulletlist refresh after the postback?
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Jan 9, 2011
is there an easy way to update a user control from another user control? i have a input box and a submit button. the user inputs a code, hits sumbit and based on the code, points are applied to thier score (another user control). the points are applied to the score in the database but don't show up on the page display until i hit refresh. is there an easy way to update the control on submit?
protected void btn_Add_Coupon_Click(object sender, EventArgs e)
{
try
{
SqlDataSourceTEST.DataSourceMode = SqlDataSourceMode.DataReader;
IDataReader Reader = (IDataReader)SqlDataSourceTEST.Select(DataSourceSelectArguments.Empty);
if (Reader.Read())
{
int iPoints = 0;
iPoints = (int)Reader["Points"];
if (iPoints > 0)
{
Profile.TimesVisited = Profile.TimesVisited + iPoints;
lblcoup.Text = iPoints.ToString() + " have been added to your score!";
}
else
{
lblcoup.Text = "Coupon Code Not Valid";
}
}
Reader.Close();
Reader.Dispose();
}
catch (Exception ex)
{
}
}
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May 11, 2010
I have placed a label in user control. I am assigning a value from database during page load of user control and it works perfectly.
After database is udpated with new value, it is not reflected in the user control. I need to refresh the page to see the updated value. Can any one pls guide me how to update the label value in user control in aspx page.
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Jun 8, 2010
I have 2 textboxes and a submit button inside a .net composite server control. I tried to only postback when submit button is clicked. I set autopostback = false for both textboxes. But either one still trigger submit button's onclick event by hitting "Enter" inside textbox. How can I stop postback by enter key?
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May 7, 2015
Here is the sample code am trying.
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true" />
<div>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="conditional">
<Triggers>
<asp:PostBackTrigger ControlID="Button1" />
[Code] ....
This upload is working. But why the page is getting refreshed? this is not partial post back and instead it 's full post back. i have read the articles for the fileuplaod with issue inside the update panel. is there any way to achieve this asynchronous upload on button click?
I don't want to use the Ajaxtoolkit Asyncupload because that will upload (Ref : [URL] ....] the moment when we seelct the file itself which i don't want to do that. i need to do on the button click event.
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Mar 23, 2010
I have a user control in a master page with two drop down lists. When the user selects an item out of either ddl, I want to load a specific user control inside an update panel on the content page. I can't figure out how to get the user control to trigger the update panel.
Master
<%@ Register src="toolbar.ascx" tagname="toolbar" tagprefix="uc1" %>
<head id="Head1" runat="server">
</head>
<body>
[Code]....
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Nov 9, 2010
I am trying to write some code where it sets the imageUrl of an ASP Image from the codebehind (on a timer), but it does not change it on my screen (its changing in debug view). I assume this is because I need to postback everytime I change the image. Problem is, I cant trigger the postback from CodeBehind so that it will change. How do I do that?
[Code]....
I am so used to win32 forms -- Just started again with ASP websites.
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Oct 31, 2010
I have UpdatePanel with GridView and i want register posback triger for index changing and asyncpostback for pagging and sorting.
When registering AsyncPostback (with event) and Postback in one control i have ASP event.
How go around this problem? , dynami register triggers mayby is a solution but i can`t unregister triger.
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Oct 1, 2010
I have many controls like dropdown, radiobuttonlist, etc on my page and I put all these controls inside the update panel so that the page doesn't look to be posting back when something is selected. Now the working on the page is very smooth. But the session object isn't getting refreshed even if I postback to the server and as a result even if the users are working on the page they are being sent to the login screen after 20 mins.
Is there anyway where I could put all the controls in update panel and still refresh the session after any postback(dropdown selection)
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Feb 16, 2010
I have seen this discussed in number of topics, but so far nothing to address my specific issue. I want to display the page the client, and then trigger an updatepanel refresh that will populate with data that takes 3-4 seconds to load (the rest of the page loads very fast). At the same time I want to display "...Loading..." text using UpdateProgress control.
Everything is working below in the sample code. However, UpdateProgress will not display unless the button is actually clicked by the user. In real production scenario I would hide the button. To invoke the immediate UpdatePanel refresh I trigger the click via Javascript. I have also tried "__DoPostBack" without success.
<code>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="TestUpdate.aspx.cs" Inherits="TestUpdate" %>
<!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 13, 2011
I have four server-side panel controls that, when clicked, trigger some jQuery animation. I'd like them to also trigger some AsyncPostBack as well. Is there an easy way to code that server-side? I know that the Panel controls don't have a Click event.
I could always trigger the AsyncPostBack via JavaScript, but that seems less than ideal.Secondly, (and I don't think this is possible), right now I use a QueryString and cookie to track a PreferredCampus selected. We'll be migrating this to be a subdomain. There's no way to change the URL without full-page postback, correct? What I can do is change the cookie setting via the partial-page PostBack I'm describing above, and then have the subpages catch and redirect to the correct subdomain.I'd really like more information about the first part.
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May 13, 2010
I have a user control at the top of my page which shows name of user.when I update user name on my page and submit the data , all data is updated but at the top in user control the name is not refreshed it shows previouse one.
how to refresh user control on update.
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Feb 18, 2010
I have a couple of user controls in an Ajax enabled page. Both controls are within TabPanels.
I'd like to be able to refresh certain items within userControl1, from userControl2.
I've added a public sub within userControl1 named "doRefresh" (that does what I need) but I can't work out how to reference it from userControl2.
Can anyone perhaps point me in the right direction with this?
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Apr 23, 2010
I am have a page with a couple of dropdowns which serve as criteria for a select SPROC. Once a selection is made in a drop down a panel is shown which contains gridview whose rows have been returned by the select SPROC.If you close the panel and change the drop down selection and then redsplay your panel the data from your prior selection is still displayed in the gridview,
unless you page to the next group of records.
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Jun 16, 2010
I am working on a datagrid that has a column with checkboxes... the checkboxes should be checked when the page loaded. The problem is that whenever I trigger a postback, all the checkboxes will be unchecked!!
I don't know what is causing this or what should I do to prevent it from unchecking the checkboxes.
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Jan 23, 2011
how to refresh a user control from another control on the page?
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Mar 31, 2010
I have a page and on that page i have a button and a user control. I want to refresh the user control without refreshing the page.
I know i cannot do it otherwise so i did is...
(wrapped my user control inside the Update Panel.)
<asp:TextBox ID="txtName" runat="server"></asp:TextBox><br />
<asp:Button ID="btnAdd" runat="server" Text="Add name to list" OnClick="btnAdd_Click" /><br /><br />
<asp:UpdatePanel ID="upShowNames" runat="server">
<ContentTemplate>
<uc1:ShowNames ID="ucShowNames" runat="server" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnAdd" />
</Triggers>
</asp:UpdatePanel>
but i still the control wont refresh. i also tried calling the update panels .Update() method by changing its UpdateMode to Conditional but that does not work either...does any one know how can we do it then..
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Mar 11, 2011
I have a user control that is not visible on the page when the page is first loaded. I have a textbox and on the textchanged event I'm making the control visible, however the control does not reload. Is there a way to refresh the control?
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Apr 3, 2010
I have myPage.aspx and I am adding user control "myUserControl.aspx" to it dynamically. myPage.aspx also has <asp:Button />
myUserControl.ascx has <asp:DropDownList .... PostBack="true"/>
I am doing something in load event of myPage.aspx which I don't want to do when PostBack is originated from the user control
Following is the load event of myPage.aspx
[Code]....
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Jul 24, 2010
Anyone with similar conclusion? GridView does not databind/refresh upon postback unless the postback is called by itself?
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