Web Forms :: Load Page Without Query String?

Feb 23, 2011

i have a page from which i send a email to a client which has link to this page with a query string. when we click we fetch the value of query string in the page load. But its showing an error when we load the page because at that time we are not sendign the query string.

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got a wired problem (well I find it a wired problem :P)

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[Code]

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We are using a asp.net page to submit data to server. what we do is we will pass as parameter in url Query string) and in page load we take that values and submitting to database I have these following doubt

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i have used a gridview and checkbox to select the items in the gridview....I can select the values easily...when i am selecting one row at a time then using query string i can easily pass the id of the selected row but when i am selecting multiple rows in the field,i dont know how to pass the array of integers[i.e id value to another field]...

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[Code]....

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I'm having an aspx page with 2 frames, one is the header and the the other one is content frame which i'm trying to load it dynamically. Everything is fine. Let me explain my scenario

On the header frame i'm having 5 link buttons and when a link button is clicked i'm passing a hardcoded Page URL to the frames containing page and then trying to load that page in the content frame.

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Header.aspx.cs

[Code]....

Then checking frameURL querystring in default.aspx page load:

[Code]....

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Here is my Default.aspx page

[Code]....

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Web Forms :: Exit Sub If Not From Previous Page Or Query String Is Empty

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I'm trying to Exit the Page_Load event if the user did not come from a specific page. If it did I want it to populate the fields based on what i passed from the other page. Here's my code:

Protected Sub Page_Load(ByVal sender
As
Object,
ByVal e
As System.EventArgs)
Handles
Me.Load
If Request.QueryString
Is
Nothing
Then
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Sub
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Then
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Dim SQLDataview
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Next
End
If
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I've a page in ASP.NET, whose appearance can change based upon a given parameter(say query string),

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I am trying to get my head around the ASP timer control. What I am trying to achieve is to get a page to reload every 60 seconds but change the url querystring everytime between 3 values

i.e. scroll through
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server/page.aspx?value=2
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i have a page with a piece of code. what the scenario is that that page can have more than two querystrings. for example it may have home.aspx?pck=1 or sumtimes it may have home.aspx?name=a

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[Code]....

this is what i have done now....bt couldnt work through it...its raising an exception saying "reference is not set".

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Apr 25, 2010

I have a page that is used to add info from a gridview into a user's profile. I have explained my issues after all of the code. Here is the applicable code(s) involved:

Protected Sub AddToCart(ByVal sender As Object, ByVal e As CommandEventArgs)
For Each gvr In GridViewItems.Rows
Dim txtGiftAmt As TextBox = (CType(gvr.FindControl("txtGiftAmt"), TextBox))
If txtGiftAmt.Visible = True Then
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End If
Next
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Response.Redirect("~/ShoppingCart.aspx")
End Sub

This sub is called by the following button when clicked:

[Code]....

Here is the sub from the ShoppongCart Class named AddCartItem:

[Code]....

Here is the problem that I am having: I have one specific item that allows user's to define their own price (for this item only). By putting this price in a session variable seems to be the easiest way to handle this (at least for me), but the session variable's value always "lags behind". By this I mean that the first time the items is entered, it uses the default value of cartItem.ItemPrice. The second time the same item is added (with the intention of a different price), this new item's cartItem.ItemPrice is set
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C# - Query String To Handler Page

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How do I create a query string from photopath on my database.aspx page to my handler.ashx page. I want the handler page to pick up on my photopath string contained here:

protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
{
protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
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string PhotoPath;
GridViewRow row = GridView1.Rows[GridView1.SelectedIndex];
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and then to retrieve it in my GetImage.ashx handler page here:
public class GetImage : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
{
string PhotoPath = System.Web.HttpContext.Current.Request.QueryString["PhotoPath"];
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FtpWebRequest request = (FtpWebRequest)FtpWebRequest.Create(new Uri(PhotoPath));
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request.Credentials = new NetworkCredential("Administrator", "commando");
try
{
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
Stream stream = response.GetResponseStream();
byte[] bytes = new byte[2048];
int i = 0;
MemoryStream mStream = new MemoryStream();
do
{
i = stream.Read(bytes, 0, bytes.Length);
mStream.Write(bytes, 0, i);
} while (i != 0);
context.Response.Clear();
context.Response.ClearHeaders();
context.Response.ClearContent();
context.Response.ContentType = "image/jpeg";
context.Response.BinaryWrite(mStream.GetBuffer());
}
catch (WebException wex)
{
//throw new Exception("Unable to locate or access your file.\nPlease try a different file.");
}
catch (Exception ex)
{
throw new Exception("An error occurred: " + ex);
}
}
}
public bool IsReusable
{
get
{
return false;
}
}
}
}

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Generating Output Through Query String In The Same Page

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I have an ASP.NET website in which I have to perform a certain operation. I have to displaying the ID's from the DB on menu.aspx page in this format {1:2:3:4}. The above format is not a problem and can be just be written with

[Code]....

But here comes my question. I have to generate this ID when the user types the query within the URL somewhat like

[Code]....

Note that I am saying that user will type this URL. I know that query string can pass the values from one form to another but this is a single web form and if I attach this [Code].... , it should return the result. How can this be done?

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I have page A, B and C. In the page load of C, i have used a query string parameter to display some tables depending on where it came from, either A or B. Page C has Cancel button. When a user clicks Cancel, it has to check where it came from and should redirect to same page, i mean either A or B. I am not at all sure how to use query string for redirecting.

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C# - How To Use Query String To Find Requesting Page

Mar 6, 2011

I have a page signup.aspx where user can register, how this page will find from which page request came from and how it will redirect user after registration to the requesting page, i want to do this using query string but don't know how PLZ SHOW ME CODES.

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No Access To Page When Passing A Query String

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I have a page on my website with access granted to logged in users (I'm using the built in asp.net membership database). This works.

However, when passing a querystring parameter in combination with that url address, the user is denied access.

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Display Query String Value On Page - Misses Some Part?

Jun 3, 2010

I am trying to retrive the query string value and display it on the aspx page. The query string is passed from a gridview. Everything works fine except i noticed that when there is an '&' in the query string then the label on the page will display only uptil the '&' (i.e. excluding the '&'). Just so to let you know. I retrive the value of the querystring into a string variable and then assign it to the variable. I have noticed this only for '&' character but maybe there are more characters with sinmilar bahaviour that I am not aware of.if anyone has a workaround on displaying all the content from the querystring then do share.

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May 26, 2010

How to encrypt and decrypt the Query string and sent,receive to another page?

Page 1

LinkButton InvoiceEdit = sender as LinkButton;
string EditId = InvoiceEdit.CommandArgument.ToString();
Response.Redirect("edit invoice.aspx?EditId=" + EditId);

Page 2

String invoiceId = Request.QueryString["InvoiceId"].ToString();

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Page OnLoad Not Fireing Changing Query String?

Dec 2, 2010

I have a problem that the OnLoad event is not fireing when I navigate to a page and just change the query string. If I do a postback it is called, then changing the query string ones more OnLoad gets called.

Here is how i try. I navigate to the page OnLoad fires -> then change the query string page updates (all bound elements get updated) OnLoad does not fire -> I do a postback using a button OnLoad fires -> then change the query string OnLoad fires. I will try to explain in more detail.

The system has log in window when I log in I navigate to an other aspx page sending two query string messages the last query string is a number (page.aspx?key=text82&key2=2010). When I get to the page the first time PageLoad event gets called and all is fine, if I in the browser change the key2 to 2011 and press enter the PageLoad does not get called but all my bound elements get updated (GrivView etc..). If I then do a postback using a button the PageLoad gets called. If I now change the 2011 back to 2010 and press Enter PageLoad is called. I try this is firefox the PageLoad get called every time. I tired to write a test website but I do not get the same problem, but what i found out is that in IE 8 changing the query string to the same number and pressing enter the PageLoad is not called. But doing so in firefox makes the postback fire. Here is the test code

<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true"
CodeFile="Default.aspx.cs" Inherits="_Default" %>
<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
</asp:Content>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<h2>
Welcome to ASP.NET!
</h2>
<p>
<asp:Button ID="Button1" runat="server" Text="Button" />
<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl="~/Default2.aspx?t=tt& tttttt=2010">HyperLink</asp:HyperLink>
</p>
<p>
You can also find <a href="http://go.microsoft.com/fwlink/?LinkID=152368&clcid=0x409"
title="MSDN ASP.NET Docs">documentation on ASP.NET at MSDN</a>.
</p>
</asp:Content>
Navigates to
<%@ Page Language="C#" AutoEventWireup="true" MasterPageFile="~/Site.master" CodeFile="Default2.aspx.cs"
Inherits="Default2" %>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label><asp:Button ID="Button1"
runat="server" Text="Button" />
</asp:Content>
OnLoad event Default2.aspx
protected void Page_Load(object sender, EventArgs e)
{
Label1.Text += "Called " + DateTime.Now.ToString();
}

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I am having problems in retaining the string variable which I defined on the top of my scoop, everytime when page loads the string value becomes null. below is the snippet of the code:

public partial class Caravan_For_Sale : System.Web.UI.Page
{
string check;
PagedDataSource pds = new PagedDataSource(); //paging

[Code]....

The string check becomes null everytime when the dlPaging_ItemCommand becomes active(page loads).

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I'm trying to implement URL Rewriting into my existing application and have managed to get the page and links working except that my destination page does not get the query string values.Mycde is based on the example below: http://dotnetguts.blogspot.com/2008/07/url-rewriting-with-urlrewriternet.htmlBasically I have a default.aspx page with links to another page; directory_item.aspx?Item_Id=1&Category_Id=1 directory_item.aspx?Item_Id=2&Category_Id=1 and so on... The code in my web config is as follows;

[Code]...

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