Get Source Of Postback Which Control Causes The Postback?

Feb 10, 2010

if (Page.IsPostBack)
{
//here I need to know which control causes the postback
}

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iam using the Jquery Uframe with asp.net project.Iam getting a postback problem here.

In side the uframe ,button control getting postback the page even the client side method call also.

i tried with the Html button Control also by setting the type="submit" ,iam facing the same problem.

And I got very limited reference about the uframe(codeflex,codeProject).

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Jul 4, 2010

On postback, how can I check which control cause postback in Page_Init event.

protected void Page_Init(object sender, EventArgs e)
{
//need to check here which control cause postback?
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Whenever I load the asp.net page first time the page source is updated but

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When my page is first loaded i receive error message stating to the effect

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Public Shared Function GetInvoicesByVendor(ByVal Email As String, ByVal vendorid As Integer) _

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How To Prevent Master Page Postback When Update Panel Asynchronous Postback Happened

Oct 15, 2010

When an asynchronous postback happened inside update panel, another postback happens also for MasterPage not only update panel embedded page .

I want to prevent this MasterPage postback .

is this possible ? think like i have a MasterPage

and another page which is test.aspx which is content page of MasterPage

i have update panel at test.aspx

when asynchronous postback happens at this test.aspx update panel it also loads MasterPage Page_Load

i want to prevent this (it should not also load MasterPage Page_Load)

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AJAX :: How To Prevent Master Page Postback When Update Panel Asynchronous Postback Happened

Oct 15, 2010

When an asynchronous postback happened inside update panel, another postback happens also for MasterPagenot only update panel embedded page .I want to prevent this MasterPage postback . is this possible ?think like i have a MasterPage and another page which is test.aspx which is content page of MasterPagei have update panel at test.aspxwhen asynchronous postback happens at this test.aspx update panel it also loads
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Switch From Async PostBack To Full PostBack In An Update Panel?

Aug 20, 2010

Is something like this possible?

Dim iCounter as Integer
Dim iQuantity as Integer = 10
Protected Sub btnFoo_Click Handles btnFoo Yadda
For i as Integer = iCounter to iQuantity - 1
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//then trigger a full postback
Next
End Sub

I am new to the concept and feel like there must be something really easy that I am missing.

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GridView Does Not Databind/refresh Upon Postback Unless The Postback Is Called By Itself?

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Anyone with similar conclusion? GridView does not databind/refresh upon postback unless the postback is called by itself?

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On my page: a Button1, a ListView1, a Panel1 and inside Panel1 an ImageButton1In the ListView1_PreRender-Event the property Panel1.Visible = false or Panel1.Visible = true is set.1. After first loading of the Page Panel.Visible = false ist set in ListView1_PreRender.2. After the postback click on Button1 the criteria for the visibility of Panel1 are evaluated, thus setting in the ListView_PreRender Panel.Visible = true.

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Mar 10, 2011

I have a script that runs during the Page_Load() event which checks a database table to make sure that the user is still owns the lock on the page. If they no longer own the lock, I disable all the controls on the page and display an
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C# - AsyncFileUpload Postback Does Not Do A Full Page Postback?

Jul 6, 2010

I implemented the AsyncFileUpload control on a web page. This web page requires uploaded files to appear in a gridview. The gridview contains the following columns: "File Name", "Confidential" Check Box, and a "Remove" button to remove the uploaded file.

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How can I make sure the Gridview is properly populated, but that the file is not uploaded twice?

I attached a sample solution which contains the issue:

[URL]

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Feb 15, 2010

I have a FileUpload control in the Source page. On the Upload button handler, I read the file into memory (after doing some validations) and since it's always going to be a TXT file, I create a string that I need to pass to the Destination page. I thought of using Cross Page postback and set the PostBackUrl property of the upload button. But it appears that the breakpoint in the Upload button handler is never hit. It directly goes to the Page_Load in the Destination page. If I can't use Cross Page postback and don't want to use Session or the database, how do I pass this string from Source page to the Destination page?

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Jquery Postback Maintains Same Tab After Postback?

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I'm using jquery tab and following js method, how and what can i modify it to maintain state of tab between postbacks? (This resets tabs to first tab after page_load)

[Code]....

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Javascript - Postback And Get Value From Html In That Postback?

Feb 4, 2011

I have a js function

function(id){
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I need to send the id to the server, how could I do this?

any way will do, using additional/hidden controls anything

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I'm at my wits end on this one looked/Searched/Played/Experimented and I need your help if you can.This page is going to be primarily used on a mobile device using Win Mobile 5 Need to Accomplish:Prevent Postback(serverside) of Page using JavaScript (Postback's slow down the page on mobile device)

[code]...

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Jul 29, 2010

When I click the button to open the modal popup it shows the popup but then continues and forces a postback causing the page to reload and the modal popup to be hidden again.Here is the markup for the control:

<asp:Button id="LoginOpenButton" runat="server" Text="Login"/>

<asp:Panel ID="ContentPanel" runat="server" CssClass="modalPopup">
<fieldset> [code]....

My script manager has no properties other than the id and runat set.

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In my default.aspx page I have a PlaceHolder control within an UpdatePanel. In this placeholder control I will dynamically load a web user control, which is just a form with a submit button. On this user control, I have the form within an update panel and I have the "Submit" button's Click Event added to the triggers.

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How To Get Header Template Control On Postback From Another Control On Aspx Page

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Im wondering how to get a label control that is in a header template in a datalist on an aspx page. I need the control text to change when the user checks a checkbox outside of the list on the page somewhere. I tried Itemdatabound, but I dont want to have to rebind the list everytime the user checks the box (lots of slow reaction time)

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Web Forms :: Lost Child Control After Postback In Panel Control

Nov 1, 2010

I had a little project is create dynamic control. My project had get detail of content and replace in sign string, Add control in sign. After click button I will find in control, I had added on page load in panel. I can't get value in child control panel, Don't have control in panel. My source is

protected void Page_Load(object sender, EventArgs e)
{
string config_design = GetConfigueKey(configDesign);
Genform(config_design, GetContent(config_design));
if (IsPostBack)
{
btn_submit_click(sender, e);
}
else
{
string config_design = GetConfigueKey(configDesign);
Genform(config_design, GetContent(config_design));
}
}
protected String GetContent(string designname)
{
string rev = "";
mClsDB = new clsConn();
strSql = "SELECT STR_DESIGN_CONTENT,STR_DESIGN_NAME,INT_FORM_ID FROM TBL_DESIGN WHERE INT_DESIGN_ID = " + designname + " ";
DataTable dt = mClsDB.GetDataTable(strSql);
if (dt != null)
{
if (dt.Rows.Count > 0)
{
rev = dt.Rows[0]["STR_DESIGN_CONTENT"].ToString();
}
}
return rev;
}
protected void Genform(string designname, string content)
{
string rev = content;
mClsDB = new clsConn();
//strSQL = " SELECT INT_FIELD_ID,STR_FIELD_NAME,STR_FIELD_SIZE,STR_FIELD_CSS,STR_FIELD_DEFAULTVALUE,BIT_FIELD_VISIBLE,INT_FIELD_VALIDATE_TYPE,STR_FIELD_MINMAX,STR_FIELD_TYPE_NAME ";..................

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Access A Control After Postback?

Jun 15, 2010

How do you access a control after postback with __EVENTTARGET in asp.net 2.0 and not get "object reference not set to an instance of an object" Error. Because when I try access a objects property I get that error

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C# - How To Get Value In Html Control On Postback

Sep 2, 2010

I have an html control (not a server control) like textarea. How can I get the value in this control from the server side when I cause a postback by clicking on a button, without writing the value in the url.

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Viewstate - Getting The Old Value Of A Control On Postback?

Feb 9, 2010

I want to be able to find the old value of a asp.net control (textbox, checkbox etc) without relying on events (e.g. OnTextChange event). Something like "someTextboxControl.OldText" would be perfect! I imagine that it is stored in the viewstate and need to somehow get at it via a custom control.

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Web Forms :: Unable To Control Postback?

Apr 23, 2010

I have a tab which loads a usercontrol dynamically and this usercontrol has 2 other usercontrols. One on the left loading treeviewA and one on the right treeviewB.I am using update panel for aspx and the ascx too. But, I am not able to control to page state and moreover when I click on one control, it get its child item, by the time I click on other control, it would refresh other control too and will lose its value.I am using below code in aspx and I have embeded update panels in usercontrols too

using http://msmvps.com/blogs/luisabreu/archive/2006/11/16/adding-removing-updatepanels-dynamicaly-from-a-page.aspx
as reference

<asp:ScriptManager
ID="ScriptManager1"
runat="server"/>

[Code]....

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