AJAX :: Can Use Response.write In Conjunction With An UpdatePanel
Feb 11, 2010
I want to bring up an Alert messagebox if a user does not fill in a field on my webform before clicking a submit button on the form. I also want to use an UpdatePanel because it makes it a smoother user experience. But I am experiencing a conflict with
response.write("<script>alert('fill in Comment before submitting');</script>");
and the UpdatePanel. If I remove the Updatepanel then I can use my Alert message above but it loses the page temporarily until the user clicks "OK" on the messagebox. My alternative - using the UpdatePanel - was to add a label to the webform where if a user does not fill in the requested info - a label would display text giving the same message - very smoothly with the UpdatePanel. But the label is not modal like the Alert message.
Is there a way I can use response.write in conjunction with an UpdatePanel? The webform is fairly basic. It has a couple of asp.net textboxes and labels and an asp.net button control. I guess I could use a "required" label, but I like the modal property of the Alert message better.
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Feb 23, 2010
I have populated my data using DataRepeater Control and i have a Delete button on that so each and every row has a delete button which allows user to delete a single entry from DB. I have put this control inside UpdatePanel so i can avoid full page postback.
When i delete the row from the database and try to show a alert message using Repsonse.Write it throws me the below error message
Error: Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled. Details: Error parsing near 'itle||Untitled Page|<script language='ja'. Source File: [URL]
But, If i remove my update panel its coming up well, is there any solution so i can show alert box after a row been deleted ?
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Apr 22, 2010
what is difference between Response.write and Response.output.write
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Feb 28, 2011
i am using CollapsiblePanelExtender and button to open pdf document using response.document in same form. CollapsiblePanelExtender works fine before i click button to open pdf document using response.write and once i click on button CollapsiblePanelExtender does not work.
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Aug 18, 2010
I am having a great deal of difficulty getting a ModalPopupExtender to hide after I export a datatable to Excel.
If I simply rem out the Response.write in the code below, everything works correctly, but of course I don't get my excel sheet.
I have tried all kinds of ways to do this. Including calling a javascript function to hide it, wrapping the Panel in an updatePanel and placing the TransactionControl in a asp:PostBackTrigger.
All without affect. Anyone have a clue as to how to do this?
I was also hoping some event would fire after the ModalPopupExtender hides, but of course there is no such luck.
[Code]....
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Jul 29, 2010
I have just upgraded my web application from 3.5 to 4. There is one issue that I am now having that is easy to reproduce. I am hoping you can help me determine the best way to overcome this issue.I use Ajax and the AjaxControlToolKit. If you create a new aspx page and add an UpdatePanel and then add a button on the UpdatePanel. Then for button_click have it do Response.Redirect("SomeOtherPage.aspx") and it will give you a 404 error.Sample:
<body>
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Aug 20, 2010
Response.Redirect is not working with UpdatePanel
after migrating a web site to ASP.NET version 4.
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Jun 24, 2010
I've a gridview which I am rendering to a html text writer and allowing clients to download as an excel spreadsheet using Response.Write. I'm using AJAX in my website now and suddenly it stopped working. This is the code I'm using
public static void Convert(DataSet ds, HttpResponse response)
{
try
{
//1. declare filename to export
string filename = "export";
//2. clear response object
response.Clear();
response.Charset = "";
//3. set response mime type to excel
response.ContentType = "application/vnd.ms-excel";
//4. prompt user to download the file
response.AppendHeader("content-disposition", "attachment; filename=" + filename + ".xls");
//5. create a string writer
StringWriter stringWrite = new StringWriter();
//6. create html writer which uses the string writer
HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);
//7. instantiate a gridview
GridView gv = new GridView();
//8. set gridview datasource to the dataset
gv.DataSource = ds.Tables[0];
//9. bind gridview
gv.DataBind();
//10. tell the gridview to render itself into htmltextwriter
gv.RenderControl(htmlWrite);
//11. output html
response.Write(stringWrite.ToString());
//12. end response
response.End();
}
catch (Exception ex)
{
string str = ex.Message;
}
}
I've found that Response.Write doesn't work with AJAX. Are there any alternatives to this?
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Mar 11, 2010
I'm using ASP.Net 2008 and C# and Ajax. I have wired up my ajax updatepanel to update the buttons within them in the gridview control's RowCommand event. However, at the end of this event, I call the Response.Redirect(commandArgs[2]); to open either Word or Adobe docs that user selected. And this line of code stops my Ajax updatepnael to update my 2 buttons' enabled properties. I thought maybe there is another way to open docs that won't interfer with my Ajax updatepanel and what will that be?
[Code]....
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Mar 30, 2010
I have a normal Wizard WebControl. On the first page of the Wizard, in the StartNavigationTemplate, I've added a button. When clicked, the button will generate a PDF (using iTextSharp) and post it back through Response.OutputStream. All this works just fine.
Now I want to wrap my Wizard in an AJAX UpdatePanel, to make it switch through the steps smoothly. However, this means that the Response from my PDF button is intercepted and does not do a post back. My solution to this was to add a PostBackTrigger for the PDF button, but since the button is in a template I ended up adding it dynamically. Here is how my final code looks like:
[Code]....
[Code]....
- if I load the page and the first thing I do is to click on the PDF button, then the PDF file is returned as a normal post back
- if I load the page, navigate to step 2, return to step 1 and then click on the PDF file, then the Response is intercepted by the UpdatePanel and not displayed.
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Mar 24, 2010
I am using the AjaxControlToolkit 3.0.30930 (the most recent). I have a very simple page with an UpdatePanel. A button on the UpdatePanel invokes Response.Redirect and passes the URL of a Click Once application on the same server. This works well if I run the website on my local system (Windows 7, IIS 7.5).
If I run the website on a remote system (Windows Server 2008, IIS 7.5, same settings) the redirect simply does not work when invoking the page from remote (using the IP address). Instead a postback is executed. Even if I use the IP address of the webserver to invoke the website locally on the webserver, the redirect does not work. Using http://localhost on the webserver the redirect works well.
I tried another test page with no UpdatePanel: The redirect works well in all scenarios.
I tried out to invoke the ClickOnce application using a link instead of Response.Redirect: The redirect works well in all scenarios, even with an UpdatePanel.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="TestWithUpdatePanel.aspx.cs" Inherits="TestWithUpdatePanel" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
[Code]....
Even if setting EnablePartialRendering to false, the redirect works. This is a big clue, that the UpdatePanel causes the problem.
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Oct 6, 2010
i am calling a function which is inside Homescroll.ascx.cs from Homescroll.ascx so i wrote on Homescroll.ascx as <% Response.Write(scroll()); %> but all this is in update panel,and i am getting errors. so is their any other way to call function from homescroll.ascx to homescroll.ascx.cs,instead of response.write();
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Jan 24, 2010
I have written simple HttpModule. context.Response.Output.Write is working fine. but not context.Response.Write().
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Jan 21, 2010
Let me explain better than what the question state. I dynamically generate a KML file from an aspx page and use routing to change the url so I can access myapp.com/mykml.kml and the download starts. I use Response.write() in the aspx page to send the data and it work flawlessly. But there is a zipped version for KML files which is KMZ and I am wondering if I can still use my aspx page to serve a KMZ instead of a KML. Since I do not use a file I cannot "zip" it. Is there a way to zip the stream and output it in the Response.Write()?
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Sep 13, 2010
how come the following won't write to different lines? It is all in the same sub.
[Code]....
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Oct 13, 2010
I have the following subroutine:
Public Sub StartTimeDif()
Dim dt As DateTime = Convert.ToDateTime(starttimeInput.Text)
Dim dt1 As DateTime = Convert.ToDateTime(endtimeInput.Text)
Dim ts As TimeSpan = dt1.Subtract(dt)
Response.Write(ts.Minutes)
End Sub
and I'm trying to pass (ts.minutes) to durationLabel.
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Oct 25, 2010
In the past I have always worked from the code behind page in ASP.NET and emitting all of my markup from that area.I am now learning MVC and am working in the .ASPX page directly.
<%= Html.Label("Test") %>
<%: Html.Label("Test")%>
<% Html.Label("Test"); %>
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Nov 18, 2010
UPDATE:
The service cannot be activated because it does not support ASP.NET compatibility. ASP.NET compatibility is enabled for this application. Turn off ASP.NET compatibility mode in the web.config or add the AspNetCompatibilityRequirements attribute to the service type with RequirementsMode setting as 'Allowed' or 'Required'.
when i try to access wcf service i get this error: the reason is HttpContext.Current is null, what should i do in this case?
Object reference not set to an instance of an object.
System.Web.Script.Serialization.JavaScriptSerializer s = new System.Web.Script.Serialization.JavaScriptSerializer();
Person p = new Person() { FirstName = "First name", LastName= "last name" };
string json = s.Serialize(p);
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Feb 23, 2011
I have database code like this
try
{
string strConnectionString = ConfigurationManager.ConnectionStrings["SqlServerCstr"].ConnectionString;
SqlConnection myConnection = new SqlConnection(strConnectionString);
myConnection.Open();
string hesap = Label1.Text;
string musteriadi = DropDownList1.SelectedItem.Value;
string avukat = DropDownList2.SelectedItem.Value;
SqlCommand cmd = new SqlCommand("INSERT INTO AVUKAT VALUES (@MUSTERI, @AVUKAT, @HESAP)", myConnection);
cmd.Parameters.AddWithValue("@HESAP", hesap);.......
It works fine but what I want, in the catch function, is to call the javascript alert function.
I've tried this
Response.Write("<script language=javascript>alert('ERROR');</script>);
But there is an error
How can I show error message in javascript alert function?
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Jan 3, 2011
I am trying to force a download of an XML file when the user visits a page.
This is the code I am using
public partial class GenerateTemplate : LayoutsPageBase
{
protected void Page_Load(object sender, EventArgs e)
{
//.............
//Going about generating my XML
//.............
Response.ClearContent();
Response.AddHeader("content-disposition", "attachment; filename=template.xml");
Response.Write(xmlDoc.InnerXml);
Response.Flush();
Response.Close();
}
}
I am facing a problem that my download window hangs indefinitely, without ever completing the download/Open of the file.
What am I doing wrong? Am I not disposing any objects or closing any connections here?
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Jan 5, 2011
how can i get get below value into asp:textbox
Response.Write("<script id=""mycountry3"" language=""Javascript"" src=""http://www.ip2phrase.com/ip2phrase.asp?template=You are from Country: <COUNTRY> ""></script>")
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Apr 21, 2010
in a webpage I have a link to let the user download file, such as,
<a href="showfile.aspx?filename=xxx">download file</a>
in showfile.aspx, I send the file using Response.OutputStream.Write method. now I get some problem when somebody put this webpage in an IFrame and open in IE, as I checked the code, showfile.aspx is requested twice when clicks the link, and in the second time the cookies of authorization and session Id are missing. I tried to add the p3p header but not working.my question is, is this how the IE designed with iframe? is there anyway to work around?
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Jan 5, 2010
I have an aspx page and when the user clicks a button the following code runs:
Response.Write(string.Format("<script language='javascript'> window.open('DisplayImage.aspx?DocumentID={0}', 'window','HEIGHT=600,WIDTH=820,top=50,left=50,toolbar=yes,scrollbars=yes,resizable=yes');</script>",
id));
The variable id is declared and it's value set eralier in the method.When the new window opens it displays the image properly, but the existing page suddenly loses all of it's styling. The links double in size and change font family. Does anyone know a way to retain styling on the calling page?
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Jan 7, 2010
have the following
Response.ContentType =
"application/octet-stream";
Response.AppendHeader("Content-Transfer-Encoding",
[code]...
Error 1 'Response' is an ambiguous reference between 2 references that have a Response.Neither is the one I need,how do i reference the Response that write the file?
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Aug 18, 2010
I'm doing something for paypal.
So i have my values for paypal PDT like this:
[Code]....
and then i will send the form to paypal and get the values (i also need some javascript to do that but it's irelevant now).
[Code]....
So it works ok but it show me all the paypal values on the page.Logical since i do a response.write.
Now my question is if there is a way that i will not get to see the values on the page.
I've tried request.clear ,request.flush but i didn't come up with anything.
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