How to open new tab window with passing ID using Query String.
I tried all the possible ways,i.e Onclientclick and others. but not.help me.
Thank you in advance
if (e.CommandName == "Items")
{
int ID = Convert.ToInt32(e.CommandArgument.ToString());
Response.Redirect("Add_Items.aspx?TestID=" + ID);
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
int id = Convert.ToInt32(Request.QueryString["TestID"]);
lblTestID.Text = id.ToString();
}
The server-side code can't instruct the browser to open a new tab, that's not how redirects work. All a redirect does is tell the browser to navigate to an address.
To open a new tab, you'd need to use client-side code. Generally this could be as simple as:
window.open(address, '_blank');
However, keep in mind that browsers make no standard guarantee to open things in tabs vs. new windows. That's entirely up to the browser's settings and capabilities. (I think that in some browsers it might make a difference whether this code is executed directly or in a click event.)
Related
I've been searching for a couple of days now and am running into an issue no matter what I've tried. The problem is that I seem to have come across with the perfect storm and I can't get all 3 things working at the same time.
Pagination
Optional Parameters
Parameter Dialog Prompt
So this first method is what I've been using and everything works except it won't Navigate past past 2 (And I've very aware of why navigation doesn't work)
// ##################################################################################################################################################
// METHOD 1: Everything works correctly except you can't go past page 2
protected void Page_Load(object sender, EventArgs e)
{
CrystalReportViewer1.ReportSource = Session["myReportDoc"] as CrystalDecisions.CrystalReports.Engine.ReportDocument;
if (CrystalReportViewer1.ReportSource == null)
{
//Generate the Report Document
Handlers.ReportHandler myReportHandler = new Handlers.ReportHandler();
CrystalDecisions.CrystalReports.Engine.ReportDocument myReportDocument = myReportHandler.GenerateReport("AlarmStatusReport");
Session["myReportDoc"] = myReportDocument; //This is were we save it off for next time
CrystalReportViewer1.ReportSource = myReportDocument;
}
}
So knowing that the common fix is to not use Page Load but use Page_Init instead. This fixes the Navigation... until I open a report that has optional parameters. With those, every time I try to navigate to the next page, instead of it working, the Parameter box re-appears and now requires at least 1 of my Optional Parameters to be filled out. (Each "next Page" reduces the prompt by 1 Optional). But, because I'm being forced to change the Parameters, it "refreshes" the report and I'm back on Page 1.
// ##################################################################################################################################################
// METHOD 2: Works, but not for any report that has Optional Parameters. They become "Required" and keep popping up instead of navigating to the next page
protected void Page_Init(object sender, EventArgs e)
{
CrystalReportViewer1.ReportSource = Session["myReportDoc"] as CrystalDecisions.CrystalReports.Engine.ReportDocument;
if (CrystalReportViewer1.ReportSource == null)
{
//Generate the Report Document
Handlers.ReportHandler myReportHandler = new Handlers.ReportHandler();
CrystalDecisions.CrystalReports.Engine.ReportDocument myReportDocument = myReportHandler.GenerateReport("AlarmStatusReport");
Session["myReportDoc"] = myReportDocument; //This is were we save it off for next time
CrystalReportViewer1.ReportSource = myReportDocument;
}
}
Now, I got real excited, because I got a bit clever and fixed both those issues, by trapping the Navigation and keeping track of the Page myself. EVERYTHING WORKS NOW!!! until I go to the Parameter Dialog prompt and it was totally jacked up.
// ##################################################################################################################################################
// METHOD 3: Everything works correctly except the Prompt Box doesn't Format correcly due to the addition of the added Event Handers
protected void Page_Load(object sender, EventArgs e)
{
CrystalReportViewer1.ReportSource = Session["myReportDoc"] as CrystalDecisions.CrystalReports.Engine.ReportDocument;
if (CrystalReportViewer1.ReportSource == null)
{
//Generate the Report Document
Handlers.ReportHandler myReportHandler = new Handlers.ReportHandler();
CrystalDecisions.CrystalReports.Engine.ReportDocument myReportDocument = myReportHandler.GenerateReport("AlarmStatusReport");
Session["myReportDoc"] = myReportDocument; //This is were we save it off for next time
CrystalReportViewer1.ReportSource = myReportDocument;
//Init our Manual Page Counter to 1
HiddenFieldPageNumber.Value = "1";
}
CrystalReportViewer1.Navigate += CrystalReportViewer1_Navigate; //Simply Adding this event, EVEN IF IT HAS NO CODE, Breaks the style and formating of the Parameter Prompt box.
CrystalReportViewer1.PreRender += CrystalReportViewer1_PreRender;
}
private void CrystalReportViewer1_Navigate(object source, CrystalDecisions.Web.NavigateEventArgs e)
{
//This prevents this event from Incrementing the Page again when the PreRender Event
//below re-sets which page to show.
if (_SkipPageIncrement == true)
{
return;
}
//Whenever the Navigation is used, this Event fires. Here is the problem, there is nothing that actually tells
//us if the user clicked on Previous or Next (or GotoPage for that Matter). So we have to do some guessing here
if (e.CurrentPageNumber == 1 && e.NewPageNumber == 2)
{
//If they pressed "NEXT" we will always get Current = 1 and New = 2 due to the Pagination starting over on the PostBack
//So we INCREMENT our real Page Number Value.
HiddenFieldPageNumber.Value = (Convert.ToInt32(HiddenFieldPageNumber.Value) + 1).ToString();
}
else if (e.CurrentPageNumber == 1 && e.NewPageNumber == 1)
{
//If they pressed "PREV" we will always get Current = 1 and New = 1 due to the Pagination starting over on the PostBack
//So we DECREMENT our real Page Number Value.
HiddenFieldPageNumber.Value = (Convert.ToInt32(HiddenFieldPageNumber.Value) - 1).ToString();
}
}
private void CrystalReportViewer1_PreRender(object sender, EventArgs e)
{
//The Viewer has a method that allows us to set the page number. This PreRender Event is the only
//Event I could find that works. It comes AFTER the Navigate, but before the reports is rendered.
_SkipPageIncrement = true; //The ShowNthPage re-triggers the Navigation, so this prevents it from running again.
CrystalReportViewer1.ShowNthPage(Convert.ToInt32(HiddenFieldPageNumber.Value));
}
As commented above, the moment I add the OnNavigation Event, even if I comment out all the actual code inside, my Prompt box goes from looking like this...
To this (my page as a dark background and you can see that now shows, plus the "OK" button is all jacked up.
I just don't get why trapping the Navigation Event breaks the Prompt box even when the event is not firing (on that first load).
Side note: I'm using VS 2019 with CR 13.0.3500.0
So thanks to the help of a teammate that is more adept on CSS as I am, I have resolved the issue "good enough". So for anyone who wants to use the LOAD event, (Or has to like me), but then loses the ability to use the navigation and wants to use my method, the band-aid for the Crystal Reports Parameter prompt is to simply override their Styling in you Site.css with this...
/*---------------------- Custom CSS for Report Prompt Buttons ----------------------*/
.pePromptButton {
padding-bottom:4.3px;
}
td.pePromptButton {
display: inherit;
}
img {
vertical-align:top;
}
I am trying to replace my listbox without data binding for a LongListSelector with data binding.
The problem I am facing (since I'm new with this) I don't find a good example how to implement properly the LongListSelector Jumplist with data binding that according to the item choose navigates to different pages.
I followed this example: http://msdn.microsoft.com/en-us/library/windowsphone/develop/jj244365(v=vs.105).aspx#BKMK_AddingLongListSelectortoyourproject
How do I make it to navigate to different pages according to the option chosen?
<phone:LongListSelector x:Name="selector" SelectionChanged="selector_SelectionChanged">
event handler (in code behind):
private void selector_SelectionChanged(object sender, SelectionChangedEventArgs e) {
if (selector.SelectedItem == null)
return;
NavigationService.Navigate(new Uri("/yourNextPage.xaml", UriKind.Relative));
selector.SelectedItem = null;
}
Here you can find example with JumpList handler: http://www.dotnetspeaks.com/DisplayArticle.aspx?ID=215
I have Page_load method like this:
private void Page_Load(object sender, System.EventArgs e)
{
if (!IsPostBack)
{
// Load Content
LoadContent();
return;
}
// some code here
}
And I use Response.Redirect(Request.Url.AbsoluteUri) at the end of methods to prevent re-post actions cased by page refrashing. When I run my app from source code that works well (debug or run mode), but when I publish the app (even on the same machine) page data (which loads on LoadContent) is not updated on updated page (but re-post actions is prevented).
Please, could anyone tell me why it happens?
ADDED:
There is LoadContent() method:
// firstly I get an supervisedGroups list TIBCO iProcess Engine via .NET vendor library, and then:
if (supervisedGroups != null)
{
rptSupervisedGroups.DataSource = supervisedGroups; // rpt.. is Repeater
rptSupervisedGroups.DataBind();
}
ADDED:
Method where Response.Redirect are used:
private void removeFromGroup(string strGroupName)
{
using(SqlConnection con = DBHelper.GetNewConnection())
{
con.Open();
// here comes query to DB
}
// Reload Page
Response.Redirect(Request.Url.AbsoluteUri);
}
You have two ways to solve this cache issue.
One is to give instructions to the browser to not cache this page, for example on page load you run:
Response.Cache.SetExpires(DateTime.UtcNow.AddYears(-4));
Response.Cache.SetValidUntilExpires(false);
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);
Response.Cache.SetNoStore();
But a better solution is to add a random number at the end of the url when you make the redirect, or even better add the new id from the data that you have insert, eg:
Response.Redirect("samepage.aspx?newid=" + NewId);
that way the page will forced to be readed again, and you still have the cache functionality.
Most likely your page is cached. Try to hit shift-f5 to check the content. You can make all redirect urls unique to prevent the browser showing a cached page. Or disable caching for the specific page.
I'm having troubles with the following piece of code. It works really good in my local machine, but when I deploy it in the dev server it doesn't work at all. I've searched in a lot of places for a solution but with not successfully.
I have a gridview in which one column is a buttonfield. This button field opens a popup displaying the detail of the selected sales order.
In order to show the popup I use the following sentence:
private void OpenPopup(string name_)
{
Page.ClientScript.RegisterStartupScript(typeof(home), "Popup", string.Concat("<script type='text/javascript'>OpenPopup('", name_, "');</script>"));
}
The OpenPopup() is a javascript function which simply displays the popup (I've tested it and it works fine, so I wont show unnecessary code):
When RegisterStartupScript is executed in my local enviroment it works fine and the result in the page source is the following:
<script type='text/javascript'>OpenPopup('items');</script>
Now, when I publish the site and deploy it in the server it doesn't work at all. I've already tried to make it work using Scriptmanager, but with the same result; it works locally but not in the server.
The added script isn't being written at all.
I really apretiate any kind of help. I've already searched a lot with lots of approaches but no solution for me...
Thanks a lot.
/Edit: I do not use updatepanel in the page.
Have you tried using .RegisterClientScriptBlock? This is what I always use in order to call the JS in the codebehind.
Could you try something like the code below?
protected void btnSubmit_Click(object sender, EventArgs e)
{
Boolean dne = false;
StringBuilder errorMessage = new StringBuilder();
String scriptName = "";
if (AdminAccess.DoesUserExist(txtUsername.Text))
{
errorMessage.Append("alert('The selected username " + txtUsername.Text + " is already in use. Please choose another. ');");
scriptName = "duplicateUsername";
if (!ClientScript.IsClientScriptBlockRegistered(scriptName))
{
ScriptManager.RegisterClientScriptBlock(this, this.GetType(), scriptName, errorMessage.ToString(), true);
}
dne = true;
}
}
I am developing an online exam application using asp.net. In the start exam page I have created a javascript countdown timer.
How can I move to the next page automatically after the timer reaches 00?
Here is my code:
long timerStartValue = 1000 ;
private int TimerInterval
{
get
{
int o =(int) ViewState["timerInterval"];
if(o==0)
{
return (o);
}
return 50 ;
}
set
{
ViewState["timerInterval"] = value;
}
}
protected void Page_PreInit(object sender,EventArgs e)
{
string timerVal = Request.Form["timerData"];
if(! String.IsNullOrEmpty(timerVal))
{
timerVal = timerVal.Replace(",", String.Empty) ;
this.timerStartValue = long.Parse(timerVal);
}
}
protected void Page_Load(object sender, EventArgs e)
{
if(! IsPostBack)
{
this.timerStartValue = 10000; //3599000;//14400000;
this.TimerInterval = 500;
}
}
protected void Button1_Click(object sender, EventArgs e)
{
this.timerStartValue = 3599000;
}
protected void Page_PreRender(object sender, EventArgs e)
{
System.Text.StringBuilder bldr=new System.Text.StringBuilder();
bldr.AppendFormat("var Timer = new myTimer({0},{1},'{2}','timerData');", this.timerStartValue, this.TimerInterval, this.lblTimerCount.ClientID);
bldr.Append("Timer.go()");
ClientScript.RegisterStartupScript(this.GetType(), "TimerScript", bldr.ToString(), true);
ClientScript.RegisterHiddenField("timerData", timerStartValue.ToString());
}
Thanks in advance,
sangita
It sounds like when you click the "Next" button, you are loading an entirely new page. This of course changes all the content and resets all the javascript. You can't maintain state across pages without a bit of work.
The solution to this could be to save the timer state when the next button is pressed, and pass it to the next stage. You could do this by saving the timer state to a hidden form input and submitting it along with the Next button.
The other option would be to load your questions via AJAX. Instead of moving to a new page every time the next button is clicked, you could simply replace the question portion of the page with a new question, and leave the timer intact. This is probably the solution I would use.
Are u reloading the entire page when clicking on the next button ? That may leads to realod the java script file also.So the variable values will reset.May be you can think about showing the questions /answers via Ajax.You need not reload the entire page when showing the next question.the part when you show the quiz will only be updated.so you can maintain the global variables in your java script too. Check the below link to know about partial page updating using jQuery.
http://www.west-wind.com/presentations/jquery/jquerypart2.aspx
Hope this helps.
You can put the timer in an iframe if you can't get rid of the postback.
You need a way to persist information between pages, and there's really only one possibility: To make it part of the next page request.
Now, this could be subdivided into 2 categories:
1) As part of the url: http://www.example.com/page?timer=123;
2) As part of the headers;
And number 2 opens new possibilities:
a) As part of POST data;
b) As a client-side cookie only;
c) As a cookie tied to information on the server;
Number 1, 2a and 2b can be manipulated by the user. So what you can do is store some value in a cookie, a hash for example or a database row ID, that you'll use to fetch information on the server.
tl;dr? Use a asp "Session object". It lets you keep things on the server-side and users will have no idea what they are.