I have used a image handler to display image which works fine... My problem is how can v pass the image using sessions on different pages. I have an image control in master page and fileupload control on the content page.... bt m not able to implement sessions for images as image can't be store to string.
View 1 RepliesI have a class which implements IHttpHandler that is designed to handle image resize requests. It handles Urls like so [URL] Currently the handler looks for myimg.jpg on disk, cuts a 100x100 thumbnail (if it isn't already present) and redirects the client to the thumbnail like so Response.RedirectPermanent("/some/virtualPath/to/thumbnail.jpg");
This has been working great, but I would like to avoid forcing the client to issue a second HTTP request. Is it safe to do the following? Server.Transfer("/some/virtualPath/to/thumbnail.jpg") All the MSDN documentation talks about using Server.Transfer() to redirect to an aspx page, so I'm not sure if this is the right thing to do or not.
How we transfer my session from http page to https page.
View 3 Repliesbelow is .ashx file shows error on If context.Session("photo1") <> "" Then why? I need to display an image on button click that saved in database.
imgHandler.ashx:
Public Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest
If context.Session("photo1") <> "" Then
Dim bytes() As Byte = DirectCast(context.Session("photo1"), [Byte]())
context.Response.Buffer = True
[code]...
on display page on button click:
Session("photo1") = HttpUtility.HtmlEncode(ds.Tables(0).Rows(0)("applicant_photo").ToString())
Image1.ImageUrl = "../imgHandler.ashx"
I have a situation where images are already uploaded in a folder. Now I dont need to upload image from client PC just select from list of images retrieved through File.IO and transfer selected one to database. Any ready script available?? Similary I need to retrieve stored image from database and display in image control..
View 3 RepliesI have a background set of images that is called randomly.It changes each time a user opens a new page and refreshes the same page.Not 100% of what I want.
Ideally I would like a random image to be shown each time a user comes to the site but not on every page.
Is there a way to set the image per the session a users visits the site instead of each page?
Current code
SqlConnection connection = null;
connection = new SqlConnection(ConfigurationManager.ConnectionStrings["PSI_DB_1ConnectionString"].ConnectionString.ToString());
connection.Open();
int id = Convert.ToInt32(Request.QueryString["id"]);
string SQLquery ="";
if (id == 0)
{
SQLquery = "Select Top 1 ImageData,ImageType from WebBGImages ORDER BY NEWID()";
}
else
{
SQLquery = string.Concat("Select ImageData,ImageType from WebBGImages where ImageID=",id);
}
SqlCommand Cmd = new SqlCommand(SQLquery, connection);
SqlDataReader Dr = Cmd.ExecuteReader();
if (Dr.HasRows)
{
while (Dr.Read())
{
Byte[] bytes = ((Byte[])Dr["ImageData"]);
Response.Buffer = true;
Response.Charset = "";
Response.ContentType = Dr["ImageType"].ToString();
Response.BinaryWrite(bytes);
Response.End();
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.BinaryWrite(bytes);
}
}
Response.Flush();
Response.End();
Cmd.Dispose();
connection.Close();
connection.Dispose();
i want to upload picture throw FileUpload control and then store it in session, after store in session i want to read it out to image control and insert to database.
View 3 RepliesThis is the class file im using to export the datagrid to excel sheet. Problem is i cant able to transfer the image from gridview to excel sheet using this code. What are the modifications i can do for the below code to export the image.
public class ExcelReport
{
# region Export to excel
/// <summary>
/// Function for Export html report to Excel sheet
/// </summary>
/// <param name="fileName">File name</param>
/// <param name="gv">Gridview</param>
///
public void ExportToExcel(string fileName, GridView gv)
{
try
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", fileName));
HttpContext.Current.Response.ContentType = "application/ms-excel";
using (StringWriter sw = new StringWriter())
{
using (HtmlTextWriter htw = new HtmlTextWriter(sw))
{
Table table = new Table();
if (gv.HeaderRow != null)
{
//gv.HeaderRow.CssClass = "GridviewStyle";
// gv.HeaderRow.Font.Bold = true;
PrepareControlForExport(gv.HeaderRow);
table.Rows.Add(gv.HeaderRow);
}......................................
Does somebody now a good way to make session not transferable, so an user can't move/copy the session token ID from one machine to another?
View 2 RepliesI have a parent window from which i open a modal dialog on button click. In WinXP with IE8 it works just fine, but in Win7 with IE8, upon opening the modal dialog it brings me to the login screen. If i enter my credentials, close the dialog and open it again, it works.The explanation i figured out is that the session isn't transfered between parent and child.The modal is opened with javascript window.open function.I don't want to store the credentials in a cookie and then read it in my modal because it's a security no-no. Is there an explanation why this is happening in Win7 and not in XP and is there a resolution for this issue?
View 1 RepliesHow can I transfer the login session of a user into a Cookie that would expire in 12 hours? I have a problem with Internet Explorer where whenever the user closes the window it would log them out automatically (which is by default what it is supposed to do). I am using VB.NET
View 4 RepliesI need to pass api key in custom http header ('X-ApiKey') and pass to another page. The second page will read that api key and do further processing. If api key is not passed in, it will redirect to error page.
I tried this way, but it didn't work.
In First.aspx page
Response.AppedHeader("X-ApiKey", "xxxxxxxxxx");
Response.Redirect("Second.aspx");
In Second.aspx page
string apikey = Request.Headers.Get("X-apiKey");
but X-apiKey is not passed in in second.aspx http header and ended up redirecting to error page.
With-in my Web App, I would like to be able to create a completely new instance of Internet Explorer, keeping the original functioning as well. No problem doing a Response.Redirect or server.transfer to a new web page, but what I am trying to do here is to open a completely new explorer window. I would like to do so transferring a few session variables to it.
View 5 RepliesSometimes when transferring to a different page, I have to use response.redirect instead of server.transfer, and when I do, the name of the page always shows up in the url such as [URL]
I use server.transfer when I can, but unfortunately I haven't found a way to use it unless the transferred page refers back to the parent when leaving.
How can I mask what page is being viewed after doing a response.redirect to another page.
as u know, you can call Server.Transfer() or place some values in Session["objName"]=value; inside your page. but i'm writing a class which has not page, so it does not have any Server or Session object.
how can call this objects or methods outside of the page (within my class) ?
I wanTransfer values from one page to another using Request Object
but when i try store
textBox value into Request object like..
Request["Name"] = txtName.Text;
i get the following Error
Property or indexer 'System.Web.HttpRequest.this[string]' cannot be assigned to -- it is read only
Is Request object allows us to store values init like Session & Application Object.
I want to pass my textbox value to another page and display in label on submit button click on first page...
View 1 Repliesi am creating a print view using checkboxes that a customer uses to select which items they wish to print. I am having difficulty transfering the selected gridview items to another page. I was using crosspage post.
View 2 Replieslist out all the ways in which value can be passed from one way to another and a quick example for each.
server transfer
response redirect
sessions
cookies
I want the code for showing popup dialog box , to show the time remaining for session closing because of in-activity. and 2 buttons for allowing to stay or to signout.
i want all the settings that are need to achieve the functionality.
i have two web aplications running on different sites.
1. site gets user information and show another website (2. site) in an i frame. but when i do this 2. site session starts again on every page.postback . if i connect to 2. site without 1. site everything works well.
I have a very interesting problem about Sessions and Master Pages. I designed a small CRM web application with master page. Users could enter their expenses with this application. I put a label on master page. If users login to this site, I changed this label text.
Label text is username. My problem is; when some users using this site at same time, usernames are conflict. For example; One client login and label which on the masterpage value is Ali. Another client login and label value is Ahmet. After that, If two clients process the same things on this site, Ahmet's label's value is changed to the value of Ali. I write it Session Id on URL. Firstly two clients take different Session ID when login to that page. When conflict occurs, two clients are the same Session Id that pages. I am using .NET Framework 3.5V. Is this ASP.NET bug ?
how do I transfer my data to another page.
Have 3 textbox whose value must be transferred..
We have developed one Web Application which is running in only one server. Now client needs our application be in two servers. So if one of the servers down then another server should be working. We are using sessions in our application. Now the problem is how to transfer the session data from one server to another??
View 7 RepliesFrom.default.aspx
DataTable Basket_DataTable = null;
protected void Page_Load(object sender, EventArgs e)
{
//create an empty DataTable and Add some columns to it
Basket_DataTable = new DataTable();
[code]....
I am storing data in session and on to.aspx ... I am displaying it. But the only last selected one is displaying ...