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Continue executing an event after validations on modal or radwindow

I have the following scenario: A user makes a click on a button inside an asp page. Because of security reasons, during the click event execution the system determines that it is necessary to apply some validations before continuing with the execution of the fired event.
Those validations are shown in a window (in this case a Telerik RadWindow). Inside this RadWindow, there is a web user control (WUC) containg validations like a Captcha, or security code, secret questions, etc. After the user writes the captcha text or the necessary validations (it implies postbacks inside the WUC), the WUC should continue with the execution of the fired event from the botton which opened the RadWindow.
How can I do this? Any idea? Is it possible?

When you call your RadWindow, make sure the set the OnClientClose event. If you are creating your RadWindow from code-behind:
RadWindow newWindow = new RadWindow();
newWindow.OnClientClose = "onRadWindowClosed";
...
If you are opening your RadWindow through javascript, you can use the add_close() method:
...
getRadWindow().add_close('onRadWindowClosed');
...
In either case, you need to create a new event handler script on your calling page for the OnClientClose event:
function onRadWindowClosed(sender, eventArgs) {
var returnValue = eventArgs.get_argument();
if (returnValue != null) {
if (returnValue == "continue") {
// Continue doing work
}
else {
// Throw an error
}
}
}
On your WUC, in the btnContinue click event:
protected void btnContinue_Click(object sender, EventArgs e)
{
Page.ClientScript.RegisterClientScriptBlock(GetType(), "closeScript", "getRadWindow().close('continue');", true);
}
This function is used on both pages:
function getRadWindow() {
var oWindow = null;
if (window.radWindow)
oWindow = window.radWindow;
else if (window.frameElement.radWindow)
oWindow = window.frameElement.radWindow;
return oWindow;
}
UPDATE TO THE EXISTING ANSWER
On your calling page, add a function to get the RadAjaxManager (assuming you already have on the page. If not, you'll need one):
function get_ajaxManager() {
return $find("<%= Telerik.Web.UI.RadAjaxManager.GetCurrent(this.Page).ClientID %>");
}
Modify your OnClosed javascript function (from the calling page):
function onRadWindowClosed(sender, eventArgs) {
var returnValue = eventArgs.get_argument();
if (returnValue != null) {
if (returnValue == "continue") {
// This call will invoke a server side event
get_ajaxManager().ajaxRequest("continue~");
}
}
}
In your code-behind, handle the server-side event that gets called:
protected void RadAjaxManager1_Request(object source, Telerik.Web.UI.AjaxRequestEventArgs e)
{
try
{
if (e.Argument.Trim().Length == 0)
{
// Show a message when debugging, otherwise return
return;
}
string argument = (e.Argument);
String[] stringArray = argument.Split('~');
switch (stringArray[0])
{
case "continue":
// Continue performing your action or call a specific method
ServerSideMethodCall();
break;
}
}
catch (Exception ex)
{
RadAjaxManager.GetCurrent(this.Page).Alert("Unable to complete operation at this time: " + ex.Message);
}
}
As previously mentioned, you'll need a RadAjaxManager on the page if you don't already have one, and you'll need to tie the AjaxRequest handler to it.
<telerik:RadAjaxManager runat="server" ID="RadAjaxManager1" OnAjaxRequest="RadAjaxManager1_Request"></telerik:RadAjaxManager>
Sorry for the long-winded answer. Let me know if that gets you what you need.

Modal RadWindow not closing in Chrome

I have a main "Report" page that has some actions the user can take that will open a modal RadWindow, let the user take actions, then click Save and the modal window will close and the main grid refreshes.
This works fine in both IE and Firefox, but Chrome does all the "work" but the modal page stays open. This is only true if I hit the Save button; the Cancel button and the close button on the top of the form still work correctly.
This is the JavaScript from the child window:
<script type="text/javascript">
function GetRadWindow() {
var oWindow = null;
if (window.radWindow)
oWindow = window.radWindow;
else if (window.frameElement.radWindow)
oWindow = window.frameElement.radWindow;
return oWindow;
}
function CloseRadWindow() {
var oWnd = GetRadWindow()
oWnd.SetUrl("");
oWnd.close();
}
function CloseAndRebind(args) {
var oWnd = GetRadWindow()
oWnd.BrowserWindow.refreshGrid(args);
oWnd.SetUrl("");
oWnd.close();
}
</script>
This is the parent's refreshgrid function:
<script type="text/javascript">
function refreshGrid(arg) {
if (!arg) {
$find("<%= RadAjaxManager.GetCurrent(Page).ClientID %>").ajaxRequest("Rebind");
}
else {
$find("<%= RadAjaxManager.GetCurrent(Page).ClientID %>").ajaxRequest("RebindAndNavigate");
}
}
</script>
The parent loads the modal window by running:
protected void btnSplitInvoice_Click(object sender, EventArgs e)
{
var btn = sender as Button;
var item = (GridDataItem)btn.Parent.Parent;
long id = long.Parse(item["Id"].Text);
var itemType = this.TabStrip1.SelectedIndex == 0 ? "TransferOrderInvoice" : "EquipmentInvoice";
string scriptstring = "var oWindow=radopen('../Misc/SplitInvoice.aspx?id=" + id + "&type=" + itemType + "','SplitInvoice');oWindow.SetModal(true);";
ScriptManager.RegisterStartupScript(this, this.GetType(), "openwindow", scriptstring, true);
}
The child's save button has a lot of work done in the code behind and then finishes with this:
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "mykey", "CloseAndRebind('navigateToInserted');", true);
The cancel button is set up as this:
<button type="button" class="CancelBtn" value="" onclick="CloseRadWindow()">
</button>
I found one entry from awhile back that suggested adding window.open('', '_self', ''); to the close, but that didn't seem applicable (and also didn't work when I tested it for the heck of it).
EDIT: When running Chrome with the Console open, I do see that I'm getting an error on the main page when refreshgrid is running:
Cannot call method 'ajaxRequest' of null
But not sure if that's what's causing the problem or not. Looking into it more now.
EDIT2: So the issue does seem to be that when using Chrome, the RadAjaxManager from the Master page does not seem to be found by the time refreshGrid runs, which is the reason for the null error above. I was able to "fix" the problem by replacing the guts of the refreshGrid function with document.location.reload(); and it does fine. I'd rather not reload the whole page if I can help it, though, so wondering if there's a way to fix this, still. And I'm curious why IE and Firefox seem to handle this when Chrome doesn't?
More information that may be useful: The main page's Page_Load event:
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
this.Session["AllUserLocationValue"] = string.Empty;
this.InitializeThePage();
}
RadAjaxManager manager = RadAjaxManager.GetCurrent(this.Page);
manager.AjaxRequest += this.manager_AjaxRequest;
manager.AjaxSettings.AddAjaxSetting(manager, this.pnlHeading, this.RadAjaxLoadingPanel1);
manager.AjaxSettings.AddAjaxSetting(manager, this.RadCodeBlock1, this.RadAjaxLoadingPanel1);
}

Remove the call to SetUrl("") because it starts disposing the current page and if the browser is fast enough it will not get to the call to close().
if you need to navigate the RadWindow away you can use one of these three options
set its ReloadOnShow property to true. Usually together with ShowContentDuringLoad=false
set DestroyOnClose to true. Use with caution and add a timeout before close()
use the OnClientClose event to set the url to a blank page

OK, I found that Chrome does consistently "lose" the report page's master page reference, or at least the RadAjaxManager there while Firefox and IE do not (I can trace through and watch $find work for both of them).
What I did find, however, is that Chrome (and the other two) can consistently find the main grid of the report (which is what refreshGrid was ultimately looking for). So I was able to replace the guts of refreshGrid with:
function refreshGrid(arg) {
var radgridNotApproved = $find("<%= rgNotApproved.ClientID %>").get_masterTableView();
radgridNotApproved.rebind();
}
and get the behavior I was looking for. It's cleaner as well; the original version of refreshGrid looks like it might have originally been intended to do more than just rebind the grid, but by the time I was looking at it, that's all it was really doing.

ConfirmationBox from codebehind, wait for answer

From my code behind, in my update method, I have to ask the user if he wants to overide some particular value. If so, overide, if not, continue with the saving without saving this value.
In my aspx I have this javascript function:
function ConfirmationBox(msg) {
var ovd = document.getElementById("hdnOveride"); //gets a HiddenField
if (confirm(msg) == true) {
ovd.value = "1";
return true;
}
else {
ovd.value = "0";
return false;
}
}
From codebehind, I call this function. And then I check the value of my HiddenField "hdnoveride". If its 1 I save, otherwise I don't.
System.Web.UI.ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "Test", "javascript:ConfirmationBox('overide?');", true);
if (hdnOveride.Value == "1"){
//Save the value
}
The problem is that my code doesn't wait for the user to answer the confirm box before it continues. I have tried using Thread.Sleep() while hdnOveride is not set like this:
while (hdnOveride.Value == "notset") {
System.Threading.Thread.Sleep(500);
}
But it just stops everything, so the popup box never shows when I do this.
How can I tell the system to wait for an answer before continuing with the code?
Thanks!

Ok then, I used Panel instead to ask the question to my users as suggested here: https://stackoverflow.com/a/7677000/454157

C# WebBrowser Button Click, then go to another page

I need to click an html button and navigate to another page. After click I need to wait for page loading, and go to the new page only when the old page loaded.
Here is the code, that click a button:
element = webBrowser1.Document.GetElementById("LoginButton");
element.InvokeMember("click");
webBrowser has got a IsBusy property, but it don`t works after button click:
element = webBrowser1.Document.GetElementById("LoginButton");
element.InvokeMember("click");
if(webBrowser1.IsBusy)
{
MessageBox.Show("Busy"); // Nothing happens, but page is not full loaded.
}
If I add System.Threading.Thread.Sleep(1000) the page loads and I can go to next page, but page loading time on other computers can be more.
What can I do to load another page only after the previous page has loaded?
P.S: I am from Russia, so sorry for bad English.

If your webpage has any javascript blocks, you won't be able to solve the problem using the WebBrowser control itself. You should wait for a document.ready event using javascript code and let know your C# program about it.
Previously, I made a javascript block that provides the webpage state. It looks like this:
var isBusy = true;
function getIsScriptBusy () {
return isBusy;
}
// when loading is complete:
// isBusy = false;
// document.ready event, for example
and a C# code that waits for it to return true:
void WaitForCallback(int timeout) {
Stopwatch w = new Stopwatch();
w.Start();
Wait(delegate() {
return (string)Document.InvokeScript("getIsScriptBusy") != "false"
&& (w.ElapsedMilliseconds < timeout || Debugger.IsAttached);
});
if(w.ElapsedMilliseconds >= timeout && !Debugger.IsAttached)
throw new Exception("Operation timed out.");
}
void Wait(WaitDelegate waitCondition) {
int bRet;
MSG msg = new MSG();
while(waitCondition() && (bRet = GetMessage(ref msg, new HandleRef(null, IntPtr.Zero), 0, 0)) != 0) {
if(bRet == -1) {
// handle the error and possibly exit
} else {
TranslateMessage(ref msg);
DispatchMessage(ref msg);
}
Thread.Sleep(0);
}
}

There are lots of events exposed by the WebBrowser control. You might try Navigated or DocumentCompleted.
Nick

WebBrowser.Navigated is the browser event you are seeking.

Use this ,
You might just be able to use this once
br1.DocumentCompleted += br1_DocumentCompleted;
Application.Run();
Call
void br1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
var br1 = sender as WebBrowser;
if (br1.Url == e.Url)
{
Console.WriteLine("Natigated to {0}", e.Url);
Application.ExitThread(); // Stops the thread
}
}
Replace br1 with your webbrowser name
Hope this helps

calling javascript from codebehind or dopastback in javascript

i have a button1_click() function which runs on page load,,now i want to call this function from javascript,,for that purpose i need to do dopostback in javascript,,can nyone tell how can i do that..as u can see my pageload function that button1_click() runs on postback
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
int l = files.Length;
Button1.Attributes.Add("onclick", " alertMe("+ l.ToString() +");");
}
Button1_Click();
}
my javascript code :
function alertMe(len)
{
if(len>3)
//do postback(post back will run Button1_click function)
else
alert('Hello');
}

This is a helpful link
From the article:
"
Calling postback event from Javascript
There may be some scenario where you may want to explicitly postback to the server using some clientside javascript. It is pretty simple to do this.
ASP.NET already creates a client side javascript method as shown below to support Postbacks for the web controls:
function __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();
}
}
"

one way would be to use an actual asp:Button and utilize the OnClientClick event...
<asp:Button id="myButton" runat="Server" OnClick="Button1_Click" OnClientClick="alertMe();" />
function alertMe()
{
if (this.len>3)
{
return true;
}
else
{
return false;
}
}
if alertMe returns true, the the postback to the server will occur, if it returns false,
it won't.
here is a link to more details on the OnClientClick event.

It looks like you want to use ajax to call this server method. You can use ajax.net to do this. Obviously as a result it will not be postback.
Have a look here for examples

Possibly this:
function alertMe(len)
{
if(len>3)
//do postback(post back will run Button1_click function)
alertMe(len);
else
alert('Hello');
}
I would always try to avoid inline js though