Web Forms :: How To Stop The Browser From Remembering The Wrong Information
Mar 8, 2010
I have a page with some controls and a next button. When the entered information does not match the database values, an error message is displayed.
After seeing the error message, the user enters correct data and clicks next. The code behind the next button makes the error message empty and invisible and goes
to the next page. On the next page the user clicks the browser's back button. The previous page is displayed with the valid data and the error message showing.
I had expected the error message not to be displayed.
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I have been struggling with this for days now. Most of my clients run IE 8, but I got issues with two of them. In my app I use the Majorversion to enable some controls on the webfrom. However, at these two clients the majorversion returned is 7 instead of 8.
I have disabled the compatibility mode of IE 8 so it runs in IE 8 mode. Furthermore, I addes an app_browser folder to my application and putted in a ie.browser file with the correct information. This doesn't solve the problem however. It still returns IE 7 as browser instead of IE 8.
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I am building a web application. Here's what I do.
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Is there a way to stop this?
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Apr 29, 2010
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Jun 25, 2010
I have a grid which has three columns FilePath|Open|Download. My scenrio is to track the browsing information of particular file opened or download in XML file. In future i have to read and maniulate the same XML file for reporting purpose.
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Oct 19, 2010
i create a pdf dynamically it's perfect but the problem is that i want to open this pdf in popup but it cant't open in popup it open direct in browser. my code is below.
CLASS file
public class clsCreatePDF
{
public clsCreatePDF()
{
//
// TODO: Add constructor logic here
//
}
public string CreatePDF(string imagename)
{
HttpContext.Current.Response.ContentType = "application/pdf";
Document doc = new Document();
string fileName = Convert.ToString(DateTime.Now.Year + DateTime.Now.Month + DateTime.Now.Day + DateTime.Now.Hour + DateTime.Now.Minute + DateTime.Now.Second + DateTime.Now.Millisecond);
//string te = HttpContext.Current.Request.PhysicalApplicationPath + "PostCard\PostcardPDF\" + fileName + ".pdf";
PdfWriter.GetInstance(doc, new FileStream(HttpContext.Current.Request.PhysicalApplicationPath + "PostCard\PostcardPDF\" + fileName + ".pdf", FileMode.Create));
PdfWriter.GetInstance(doc, HttpContext.Current.Response.OutputStream);
doc.Open();
PdfPTable maintable = new PdfPTable(1);
maintable.DefaultCell.BorderColor = iTextSharp.text.BaseColor.BLACK;
// maintable.DefaultCell.Height = Convert.ToSingle(306)
//maintable.DefaultCell.PaddingTop = 10
///'''''''''''' inner table start '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
PdfPTable table = new PdfPTable(3);
maintable.AddCell(table);
table.DefaultCell.BorderColor = iTextSharp.text.BaseColor.WHITE;
// table.DefaultCell.Padding = 10
//PdfPCell imageCell1_1 = new PdfPCell(Image.GetInstance(HttpContext.Current.Server.MapPath("~/PostcardImage/smallimages/2257Bluehills.jpg")), true);
PdfPCell imageCell1_1 = new PdfPCell(Image.GetInstance(HttpContext.Current.Server.MapPath("~/PostcardImage/smallimages/" + imagename )), true);
imageCell1_1.Colspan = 2;
imageCell1_1.BorderColor = iTextSharp.text.BaseColor.WHITE;
imageCell1_1.VerticalAlignment.ToString("middle");
imageCell1_1.Border = 0;
imageCell1_1.PaddingLeft = 12;
imageCell1_1.PaddingTop = 12;
imageCell1_1.PaddingBottom = 0;
table.AddCell(imageCell1_1);
PdfPCell imagecell1_2 = new PdfPCell(Image.GetInstance(HttpContext.Current.Server.MapPath("~/PostcardImage/garmond1.jpg")), true);
imagecell1_2.BorderColor = iTextSharp.text.BaseColor.WHITE;
imagecell1_2.Border = 0;
table.AddCell(imagecell1_2);
// table.AddCell("1.2")
//PdfPCell imageCell2 = new PdfPCell(Image.GetInstance(HttpContext.Current.Server.MapPath("~/PostcardImage/bigimages/2257Bluehills.jpg")), true);
PdfPCell imageCell2 = new PdfPCell(Image.GetInstance(HttpContext.Current.Server.MapPath("~/PostcardImage/bigimages/"+ imagename )), true);
imageCell2.Colspan = 3;
imageCell2.BorderColor = iTextSharp.text.BaseColor.WHITE;
imageCell2.Border = 0;
imageCell2.PaddingTop = 12;
imageCell2.PaddingLeft = 30;
imageCell2.PaddingRight = 30;
table.AddCell(imageCell2);
//table.AddCell("1.3")
//table.AddCell("1.4")
//table.AddCell("2.1")
//table.AddCell("2.2")
// table.AddCell("")
PdfPCell imagecell3_1 = new PdfPCell(Image.GetInstance(HttpContext.Current.Server.MapPath("~/PostcardImage/garmond1.jpg")), true);
imagecell3_1.BorderColor = iTextSharp.text.BaseColor.WHITE;
imagecell3_1.Border = 0;
table.AddCell(imagecell3_1);
//table.AddCell("")
//PdfPCell imageCell3_2 = new PdfPCell(Image.GetInstance(HttpContext.Current.Server.MapPath("~/PostcardImage/smallimages/2257Bluehills.jpg")), true);
PdfPCell imageCell3_2 = new PdfPCell(Image.GetInstance(HttpContext.Current.Server.MapPath("~/PostcardImage/smallimages/" + imagename )), true);
imageCell3_2.Colspan = 2;
imageCell3_2.BorderColor = iTextSharp.text.BaseColor.WHITE;
imageCell3_2.Border = 0;
imageCell3_2.PaddingTop = 12;
imageCell3_2.PaddingRight = 12;
table.AddCell(imageCell3_2);
//table.AddCell("2.3")
//table.AddCell("2.4")
//table.AddCell("3.1")
//table.AddCell("3.2")
//table.AddCell("3.3")
//table.AddCell("3.4")
///'''''''''''''''''''''''''''''''' inner table clase''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
PdfPCell mainimgcell = new PdfPCell(table);
// mainimgcell.Colspan = 2
//maintable.AddCell("hi")
//mainimgcell.BorderColor = iTextSharp.text.BaseColor.RED
doc.Add(maintable);
//doc.Add(table)
doc.Close();
// HttpContext.Current.Response.Redirect("PostcardPDF/" + fileName + ".pdf");
return fileName;
}
}
CS page
if (imgupload.FileContent.Length > 0)
{
string fileName = "";
string pdfname = "";
//set Imagename by adding milliseconds too so that no overwrite in images directory.
fileName = DateTime.Now.Year + DateTime.Now.Month + DateTime.Now.Day + DateTime.Now.Hour + DateTime.Now.Minute + DateTime.Now.Second + DateTime.Now.Millisecond + Path.GetFileName(imgupload.PostedFile.FileName.ToString().Trim());
//Resize images and store it in different directories
ResizeImages objResizeImage = new ResizeImages();
objResizeImage.ResizeImage(fileName, imgupload.PostedFile.InputStream);
objResizeImage = null;
//*****************************Create PDF **************
clsCreatePDF objcreatepdf = new clsCreatePDF();
pdfname = objcreatepdf.CreatePDF(fileName);
Session["pdfname"] = pdfname;
objcreatepdf = null;
//*****************************end *********************
}
ASPX page is below
<tr>
<td>
</td>
<td>
<asp:Button ID="btnCancel" runat="server" Text="Cancel" PostBackUrl="~/usermodule/Dashboard.aspx" />
<asp:Button ID="btnCreate" runat="server" Text="Create and Preview New PostCard"
OnClick="btnCreate_Click" />
<asp:Button ID="btnshow" runat="server" Style="display: none" />
<cc1:ModalPopupExtender ID="popupProductDetails" runat="server" PopupControlID="pnlPostcard"
BackgroundCssClass="modalBackground" TargetControlID="btnshow" CancelControlID="btnCancelProductDetails" />
</td>
</tr>
<tr>
<td colspan="2">
<asp:Panel ID="pnlPostcard" CssClass="modalPopup" runat="server" Width="80%" Height="80%"
Style="display: none">
<table>
<tr>
<td>
<iframe id="Postcardframe" runat="server" scrolling="yes" width="750px;" height="100%">
</iframe>
</td>
</tr>
<tr>
<td style="text-align: right; width: 10%;">
<asp:Button ID="btnCancelProductDetails" Text="Cancel" runat="server" />
</td>
</tr>
</table>
</asp:Panel>
</td>
</tr>
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Oct 20, 2010
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Jan 26, 2011
way to stop browser history population in a textbox?
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I've got an ASP.NET application which allows users to enter their username/password in various places (e.g. login, change password, change username etc..). When I logged in, the browser asked if I would like to store the user details. Usually, I click 'no', but this time I decided to click 'yes'. Now, certain textboxes in my form are prefilled with the username or password. Is it possible to remove these, as they sometimes appear in textboxes which shouldn't be prefilled. I tried setting AutoCompleteType=none and Text='' but it still gets prefilled. The textboxes don't have much in common, except the same CssClass and, for password boxes, TextMode=password. The names are different, although sometimes they include the word name (e.g. fullName, userName). Is there a way to stop the browser from filling certain textboxes?
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Jan 22, 2010
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Nov 12, 2010
I have a VS 2008 asp.net c# application and a Login web page with a
Login Control from:-
System.Web.UI.WebControls.Login
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How can I stop this?
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Nov 28, 2010
I have one question regarding browser remembering previously entered values. I'm developing ASP.NET MVC 2 application and for some reason my web site suddenly stopped remembering previously entered values in text inputs. I can still see values entered yesterday, but non from today.
I also noticed that my username textbox values started appearing in email textbox although I never changed the name or id of my html elements. The only thing I did was to remove some input elements and added some new... But they all have unique id's and names...
I did a lot of search over the web, but just couldn't find the right answer...
Would it be possible that the model binding could be causing this which I implemented today? Or maybe some web.config configuration?
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Mar 25, 2011
I need to stop users users using the browser back button and potentially submitting an old version of a form.
I'm storing a guid in a session variable and also writing the value to a hidden form field and then checking the session value against the hidden field value if a user does try to navigate back and submit an old form.
If the form is submitted and the user wants to complete a new copy of the form then a new guid is generated both to the session and to the hidden form field. Now, if the user decides to hit the back button a few times to get the old form and tries to submit it again, the page checks the current guid in session against the guid stored in the form field and it finds a mismatch and prevents the form being submitted.
This works as expected in Chrome and Firefox, but in IE6, when the user hits the back button to view the old form, the new guid value appears in the hidden field of the old form! This means the user can submit the old form again, which we definitely do not want.
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Aug 3, 2010
I dont know whether this simple task or not, but I tried to search in google but couldn't find anything.
I've a asp.net form and user enters some data in the text boxes provided. Whenever user submits the form, browser will save that form data. I don't want this form data to be saved in browser. How can I restrict the browser saving this form data without touching the browser settings?
Application is developed using asp.net and normal text boxes are used here.
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I am using Request.Browser.IsMobileDevice in conjunction with the MDBF file that goes in the App_Browsers/Devices folder [URL] Now using Sea Monkey browser (latest version 2.0.7) IsMobileDevice returns true. Why might this be the case as clearly Sea Monkey is not a mobile browser. In fact, I had the understanding it used a lot of the same core as FireFox (which does not return true)
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Nov 3, 2010
how i will prevent user to resend data from refreshing URL. actually after posting data to the server and returning back data by the server to the client. if user refresh the url address then again it send back to the server withe previous data. so how can i prevent it by c#, asp.net.
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Sep 26, 2010
I'm try to get my site to detect what browser someone is using to ensure they're using one that is compliant with our site. Everything works, except Firefox seems to post the wrong version in the Request.Browser variables.I'm on Firefox 3.6.10, but Request.Browser shows Mozilla 1.9.2.10. It's correct in the HTTP_USER_AGENT string:
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.10) Gecko/20100914 YFF35 Firefox/3.6.10 ( .NET CLR 3.5.30729)
Is there a way to detect it better without having to parse through the HTTP_USER_AGENT string?
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Aug 1, 2010
I have a very weird thing happening. I have two databases that have exactly the same tables but different database names on the same virtual machine, but in different instances of SQL Server. For some reason, when using one of them, it will save to the other. In debug, looking at my connection string..I have verified that it is correct, yet when I allow the save, I look in the table and it isn't there, it is in the other database that is in a table with a completely different name and in a different instance of SQL Server.
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Feb 16, 2011
I have DropDownList, which has some options to choose from. Now after when user selects one of the options, it has to click on a button, which is a redirection on the same page:
protected void Button4_Click(object sender, EventArgs e)
{
Response.Redirect("Graphs.aspx?Selection=" + DropDownList1.SelectedValue + "&Date1=" + TextBox1.Text + "&Date2=" + TextBox2.Text);
}
I have to use redirection instead of postback, because I use flot which is javascript library and all the code has to be written again when user selects some other option. The problem is, when it redirects back, for some reason I can't make it to remember the value in the DropDownList, which has user previously selected. I tried this with this code:
protected void Page_Load(object sender, EventArgs e)
{
if (Request.QueryString["Selection"] == "TemperatureOUT")
{
DropDownList1.SelectedIndex = 0;
}
else if (Request.QueryString["Selection"] == "Dewpoint")
{
DropDownList1.SelectedIndex = 1;
}
}
The problem is, if for example user selects Dewpoint from DropDownList and then clicks on a button, which causes redirection, the new url should have:
Graphs.aspx?Selection=Dewpoint&...
but instead, it says:
Graphs.aspx?Selection=TemperatureOUT&...
Now if I remove that code from Page_Load it works, but it does not remember what has user selected before. Now I know that there has to be something with Page_Load. Isn't that when page is redirected, the Page_Load get's called, so it should look a the Selection value and print it out. So it has to be a problem with redirection, that for some reason does not set the selected value.
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Jun 14, 2010
Is there a way of getting the current column being used to sort a table on an rdlc report ?I'd like a way of remembering how the user sorted the table so they dont have to reset it every time they open the form.I know I could make them use an on screen control (eg dropdown list) to change the sorting and then capture the choice as the report is loaded.But I'd rather do it in the background I can.
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