Develop Reference

How to send a Asp label value( from server side) from popup window to parent window dropdownlist

Trying to send label value from popupwindow to parent window drop down list

Create a global variable that you pass this value in it
Create Global.asax file, In it create public static string X;
Go to your page access the dropdown value save it in this X by calling Global File
Then Restore in in your Main Page

I got it by using, (Changed to client side)
popup window code:
<script type="text/javascript">
function updateParent(test) {
var oVal = test;
window.opener.updateParent(oVal);
window.top.close();
}
</script>
Parent window code:
function updateParent(oVal) {
var region = oVal;
$('#ddlreg option:contains(' + region + ')').each(function () {
if ($(this).text() == region) {
$(this).attr('selected', 'selected');
return false;
}
return true;
});
}

pop up does not go for post back in asp.net

I have button called sales and it have a JavaScript popup when I click on cancel it postback and the values in the form are inserted but when i click on ok it does not post back and the values in the form does not go in the database ( the JavaScript button is actually print call and when button is clicked it asks for print when print dialog box is open it does not post back and data is not inserted in the database)
here is the javascript code
function confirmAction(printable) {
var r = confirm("You want to Print Invoice?");
if (r == true) {
var printContents = document.getElementById(printable).innerHTML;
var originalContents = document.body.innerHTML;
document.body.innerHTML = printContents;
window.print();
document.body.innerHTML = originalContents;
__doPostBack();
}
else {
__doPostBack();
}
}
here is the code for button click
<asp:Button ID="btnaddsale" runat="server" Text="Sale" OnClick="btnaddsale_Click" OnClientClick="javascript:confirmAction('printable')"/>

Ok, couple of notes for you:
You want a postback in either case.
Your <asp:Button> will automatically do a postback either way, so you don't need to call __doPoskBack(); in this scenario.
Major issue here is that, if you want a postback, it will happen immediately when the function exits, effectively canceling out the print dialog too soon. To avoid this, we will use a JavaScript trick that will check if the document has focus, and only when it does (when user exits print dialog in the browser) will we return and allow the postback to occur.
To fix the issue,
First: Make the function return true; when user cancels, and wait for focus and then return true if the user wants to print:
function confirmAction(printable) {
var r = confirm("You want to Print Invoice?");
if (r == true) {
var printContents = document.getElementById(printable).innerHTML;
var originalContents = document.body.innerHTML;
document.body.innerHTML = printContents;
window.print();
document.body.innerHTML = originalContents;
// Check focus after user exits print dialog and then return true for the postback
var document_focus = false;
$(document).focus(function () { document_focus = true; });
setInterval(function () { if (document_focus === true) { return true; } }, 500);
}
else {
return true;
}
}
Then, change the JavaScript code to use the return statement in the OnClientClick event:
<asp:Button ID="btnaddsale" runat="server" Text="Sale"
OnClick="btnaddsale_Click"
OnClientClick="javascript:return confirmAction('printable')"/>
Update based on comments and your changed requirement:
Here's a snippet to make the script pop up after the postback. So you will insert values to database, and then add the print script / confirm dialog on page load using Page.ClientScript.RegisterStartupScript()
Note I don't recommend to embed the script in your C# code, so I'd suggest to take your confirmAction() function and place it (if not already) into a separate "yourScripts.js" file and then just call the function name when the page is loaded using jQuery. Here's an example:
In your master page or page header: This file should contain the confirmAction() function
<script type="text/javascript src="path/to/yourScriptsFile.js">
Then, in code-behind:
protected void Page_Load(object sender, EventArgs e)
{
// Only display script on PostBack, not initial page load
if (IsPostBack)
{
Page.ClientScript.RegisterStartupScript(
this.GetType(),
"confirmAction",
#"<script type=""Text/Javascript"">$(document).ready(function() { confirmAction('printable'); });</script>");
}
}
Also note, since you will NOT want a postback now, the confirmAction function should no longer return true; or use the trick code I posted above, and will just return false:
function confirmAction(printable) {
var r = confirm("You want to Print Invoice?");
if (r == true) {
var printContents = document.getElementById(printable).innerHTML;
var originalContents = document.body.innerHTML;
document.body.innerHTML = printContents;
window.print();
document.body.innerHTML = originalContents;
}
return false;
}

How can I disallow WebView to open links on the browser in WinRT( target=_blank links )?

I have a WebView on my app and I can't change the html file("target=_blank" link types). But some links on the page makes my app open them on the system browser. How can I disallow this action?
Thanks.

In the NavigationCompleted event handler run this script:
webView.InvokeScriptAsync("eval", new[]
{
#"(function()
{
var hyperlinks = document.getElementsByTagName('a');
for(var i = 0; i < hyperlinks.length; i++)
{
if(hyperlinks[i].getAttribute('target') != null)
{
hyperlinks[i].setAttribute('target', '_self');
}
}
})()"
});

On Windows 10, you can use WebView.NewWindowRequested:
private void WebView1_NewWindowRequested(
WebView sender,
WebViewNewWindowRequestedEventArgs args)
{
Debug.WriteLine(args.Uri);
args.Handled = true; // Prevent the browser from being launched.
}

There is a navigation starting event. It have a cancel property that can be used to cancel the navigation. Maybe this will work for you?
http://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.xaml.controls.webview.navigationstarting

Stumbled on this myself recently, and I want to add that even though user2269867's answer is a viable solution, it might not work in certain situations.
For example, system browser will not only open if user click a link with target="_blank" attribute, but also if window.open() function called in javascript. Moreover, even removing all 'target' attributes won't work if a page loading some content dynamically and changing DOM after your script is already finished executing.
To solve all problems above, you need to override window.open function and also check for 'target' attribute not once, but every time user click something. Here is script that covers those cases:
function selfOrParentHasAttribute(e, attributeName) {
var el = e.srcElement || e.target;
if (el.hasAttribute(attributeName)) {
return el;
}
else {
while (el = el.parentNode) {
if (el.hasAttribute(attributeName)) {
return el;
}
}
}
return false;
}
var targetAttributeName = "target";
document.addEventListener("click", function (e) {
var el = selfOrParentHasAttribute(e, targetAttributeName);
if (el) {
if ((el.getAttribute(targetAttributeName) == "_blank") ||
(el.getAttribute(targetAttributeName) == "_new"))
{
el.removeAttribute(targetAttributeName);
}
}
});
window.open = function () {
return function (url) {
window.location.href = url;
};
}(window.open);
My js skills aren't ideal, so feel free to modify.
Also don't forget that, as kiewic mentioned, for Windows 10 there is WebView.NewWindowRequested event which solves this issue more natural.

If you just want to show the page and not allow any action to be done on that page I would look into WebViewBrush. The WebViewBrush will basically screenshot the website and the users will not be able to use any links or anything else on that page, it will turn into a read-only page. I believe this is what you are asking for.
More info on WebViewBrush can be found here: http://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.xaml.controls.webviewbrush

If you can edit HTML of the page and NavigateToString(), then add <base target='_blank'/> in the <head>

ASp.net Button on jqueryui Dialog causes all from data to reset. UsesubmitBehavior=False, and databind in (!ispostback)

So I've been struggling with this for a couple days now. I have a login page, that checks if the user is logging in for the first time, and if so, it shows a jqueryui Dialog box asking the user to pick their security questions. The Dialog is simple, three dropdowns, three text boxes, and a continue and cancel button. The dialog is displaying find, and when you click continue, the data is saved to the database, but it only saves the default values of the dropdownlists, and it doesnt save the text from the text boxes. It seems to me like the form is posting back before the data saves, and then saves the blank/default content. I've tried everything I can find on the internet to fix this. As of right now, I'm launching the dialog box on page load for testing purposes. Code Below:
Javascript:
function validateQuestions() {
var q1Index = $('#<%= ddlQuest1.ClientID%>').get(0).selectedIndex;
var q2Index = $('#<%= ddlQuest2.ClientID%>').get(0).selectedIndex;
var q3Index = $('#<%= ddlQuest3.ClientID%>').get(0).selectedIndex;
"<%=Q3Index%>" = q3Index;
var label = document.getElementById('<%= _lblQuestError.ClientID%>');
label.style.display = 'none';
if (q1Index == q2Index || q1Index == q3Index || q2Index == q3Index) {label.style.display = 'block';}
else {label.style.display = 'none'}
return false;
}
function validateAnswers() {
var ans1Text = $('#<%= txtAnswer1.ClientID%>').val();
var ans2Text = $('#<%= txtAnswer2.ClientID%>').val();
var ans3Text = $('#<%= txtAnswer3.ClientID%>').val();
var ans1error = document.getElementById('<%= _lblAns1Error.ClientID%>');
var ans2error = document.getElementById('<%= _lblAns2Error.ClientID%>');
var ans3error = document.getElementById('<%= _lblAns3Error.ClientID%>');
ans1error.style.display = 'none';
ans2error.style.display = 'none';
ans3error.style.display = 'none';
if(ans1Text=""){ans1error.style.display = 'block';}
else if(ans2Text=""){ans2error.style.display = 'block';}
else if(ans3Text=""){ans3error.style.display = 'block';}
else { ans1error.style.display = 'none'; ans2error.style.display = 'none'; ans3error.style.display = 'none'}
return false;
}
function cancel() {
$("#_dlgQuest").dialog('close');
return false;
}
function showDialog() {
var secQuestDlg = $('#_dlgQuest').dialog({
bgiframe: true,
height: 350,
width: 900,
modal: true,
overlay: {
backgroundColor: '#000',
opacity: ".8"
}
});
secQuestDlg.parent().appendTo('/html/body/form[0]');
}
Button aspx: <asp:Button ID="_dlgbtnContinue" ToolTip="Continue" runat="server" Text="Continue"
UseSubmitBehavior="false" OnClick="_dlgbtnContinue_Click" CausesValidation="false" />
PageLoad:
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
ddlQuest3.Attributes.Add("onchange", "javascript:validateQuestions();");
ddlQuest1.Attributes.Add("onchange", "javascript:validateQuestions();");
ddlQuest2.Attributes.Add("onchange", "javascript:validateQuestions();");
txtAnswer1.Attributes.Add("onblur", "javascript:validateAnswers();");
txtAnswer2.Attributes.Add("onblur", "javascript:validateAnswers();");
txtAnswer3.Attributes.Add("onblur", "javascript:validateAnswers();");
List<String> lstQuestions = QuikDrawServiceHelper._QuikDrawClient.GetQuestions();
ddlCountry.Focus();
FillQuestions();
ClientScript.RegisterStartupScript(GetType(), "hwa", "showDialog()", true);
}
}
Fillquestions:
try
{
foreach (string s in lstQuestions)
{
if (s.Equals(Customer.Quest1Code))
{
q1 = s;
}
if (s.Equals(Customer.Quest2Code))
{
q2 = s;
}
if (s.Equals(Customer.Quest3Code))
{
q3 = s;
}
}
}
catch (Exception ex)
{
}
Complete Click Event:
protected void _dlgbtnContinue_Click(object sender, EventArgs e)
{
Customer = CompanyServiceHelper._CompanyClient.GetCustomerByID(Convert.ToInt32(Session["CustomerID"].ToString()));
if (Session["FirstLogin"] == "Yes")
{
Customer.Quest1Code = ddlQuest1.SelectedValue;
Customer.Quest1Ans = txtAnswer1.Text;
Customer.Quest2Code = ddlQuest2.SelectedValue;
Customer.Quest2Ans = txtAnswer2.Text;
Customer.Quest3Code = ddlQuest3.SelectedValue;
Customer.Quest3Ans = txtAnswer3.Text;
CompanyServiceHelper._CompanyClient.AddQuestionsForCustomer(Customer);
Session["FirstLogin"] = "Yes";
Session["CustID"] = Customer.CustID;
}
I've tried linkbuttons as well, and i get the same thing. Any help would be greatly appreciated.

The root cause of the problem you are facing is the fact that the dialog is made "display:none" when popup disappears, and this resets all the values inside the dialog, making them not accessible on server. Despite "runat=server", form fields are not accessible on server bcz of "display:none", making you think the values are never set !!

Seems like when you click the dlgbtnContinue button it is still not doing a postback, therefore you get the !isPostBack all over, and then resets the values. After this, the _dlgbtnContinue_Click event is getting triggered, saving the blank values. Maybe try to check in !isPostBack if also the values in the DropDown are not the default, meaning that if they are not the default values you do not want to get inside that if again. Just an idea... It would be good to have the _dlgbtnContinue_Click code. Good luck.

How to disable right click on htmlpage using silverlight?

I have recently started doing the coding in Silverlight application.I am not having great ideas about it. Now I am having the problem while disable right click Silverlight applications in a HTML page. I have tried to do lot of things but was not succeeded.Please help me how to disable right click on htmlpage using silverlight.

If you could use javascript here is your answer , but generally disabling the right click is not recommended.It will annoy some users.
<script type="text/javascript" >
var BM = 2; // button middle
var BR = 3; // button right
var msg = "MOUSE RIGHT CLICK IS NOT SUPPORTED ON THIS PAGE";
function mouseDown(e) {
try { if (event.button == BM || event.button == BR) { return false; } }
catch (e) { if (e.which == BR) { return false; } }
}
document.oncontextmenu = function() { return false; }
document.onmousedown = mouseDown;
</script>