Web Forms :: Show Same Page In Different Templates, Based Upon A Query String Parameter
Mar 9, 2011
I've a page in ASP.NET, whose appearance can change based upon a given parameter(say query string),
How can I achieve this in ASP.NET, Master pages concept won't work here, as even the contents of the page and positioning of the controls on the page can change based upon the parameter.
One solution I can think of is using XSLT, but is there any other solution I can use to solve this problem? Is there any concept of templates I can use here?
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Apr 14, 2010
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
1, What is the default event happening while we call a ASP.NET page is it a POST or GET? We tried to call this url from a mobile application, it is not happening , we are not getting any error also in the mobile application.
2, IF we are calling the url to submit data from mobile applications which one we have to use (GET or POST)
3, IF we are calling this url from an application running in PC to submit which one we have to use ?
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Feb 25, 2010
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
so i want to redirect to someother page based on the query string the page has.
[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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Oct 6, 2010
Question basically crams it all in... I'm loading a page with a querystring (ID), and I need to use that ID to set the selected item of a ListView when the page loads. The ID is a DataKey on the ListView. I have no code of value to post--none of my attempts at this work.
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Aug 31, 2010
Summary: I need to authorize pages based upon the data present in the query string of a url, not just the page name.
Background:
Let's say I'm building a library inventory system. Users can be created and assigned to a single library in either an Admin or User role. There are hundreds of competing libraries in the same database, so it's important to ensure that users of one library cannot view inventory from another library.
Right now I'm using a pretty standard ASP.NET setup: Forms Authentication using the SqlMembershipProvider. Authorization using the SqlRoleProvider, configured via <authorization> sections in the web.config. Security trimming with the SiteMap provider to hide unauthorized pages.
To control the inventory information from leaking, I'm manually checking a user's associate library ID with every inventory query. It works, but it's tedious and prone to errors. There has to be a better way.
Question:
Now users have the ability to create arbitrary "collections" within a library. (e.g. Collection A has Books 1, 2, & 3 in it.) Admins want the ability to grant Admin / User access on individual collections, not just the entire library.
So, if a user goes to www.com/Book.aspx?BookId=1, the system needs to ensure that user has permissions for the collection that "Book 1" is in before showing the page. If they go to www.com/Reviews.aspx?ReviewId=23, I need to make sure the Review is for a book that is in a collection that they have permission to view.
1) How can I implement this in the most standard ASP.NET way possible?
Manual checking within a base page?
A custom HttpModule?
A custom Role Provider?
I'm not interested in how to store the admin/user permissions, but rather how/where to authorize based on those permissions.
(examples on how to implement any of those are appreciated)
2) To further complicate it, I'd still like security trimming to check if the user has Admin rights on any collection or library and hide the admin pages if he doesn't.
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Nov 25, 2010
I have a page A with an EDIT LINK. When click it sends a parameter to a second page B, which contains a DetailsView in Edit mode.Page B take care of editing the details.
A.aspx?AuthorId=89
My problem is: I am not able to visualize the Right AuthorId passed from page A.aspx in the DetailsView in B.
What I am missing? Please if you have send me a link with some tutorials. Thanks for your time!
Here code for DetailsView -----------
<asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False"
DataKeyNames="AuthorId" DataSourceID="EntityDataSource1" Height="50px"
Width="125px" DefaultMode="Edit">
<Fields>
<asp:BoundField DataField="AuthorId" HeaderText="AuthorId" ReadOnly="True"
SortExpression="AuthorId" />
<asp:BoundField DataField="UserId" HeaderText="UserId"
SortExpression="UserId" />
<asp:BoundField DataField="FirstName" HeaderText="FirstName"
SortExpression="FirstName" />
<asp:BoundField DataField="LastName" HeaderText="LastName"
SortExpression="LastName" />
<asp:BoundField DataField="NoteInternal" HeaderText="NoteInternal"
SortExpression="NoteInternal" />
<asp:BoundField DataField="ContentAuthor" HeaderText="ContentAuthor"
SortExpression="ContentAuthor" />
</Fields>
</asp:DetailsView>
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Jan 20, 2010
how to pass through a query string parameter of an assignment id and then checking and validating this as a number and displaying the information returned on screen. At present I have code which displays the information on screen but this is by entering in the assignment id and by triggering the button click event, I've shown the code for this below:
.aspx
<div>
<b>Current Assignment</b>
<br />
<asp:TextBox runat="server" ID="txtAssignmentID"></asp:TextBox>
<asp:Button runat="server" Text="Get Assignment" />
<br />
<b>Date Started:</b> <asp:Label runat="server" ID="lblAssignmentStart"></asp:Label>
<br />
<b>Status:</b> <asp:Label runat="server"></asp:Label>
<br />
<b>Current Achievement Level:</b> <asp:Label runat="server" ID="lblAssignmentLevel"></asp:Label>
<br />
<b>Date Last Calculated:</b> <asp:Label runat="server" ID="lblAssignmentCalcDate"></asp:Label>
<br />
</div>
.cs
protected void cmdGetAssignment_Click(object sender, EventArgs e)
{
//Check the assignmentID is an integer
int AssignmentID = 0;
try
{
AssignmentID = TypeConv.CInt(txtAssignmentID.Text);
}
catch
{
}
if (AssignmenttID > 0)
{
//Create new TCAAssignment object by passing the ID
TCA Assignment Current Assignment = abc.TCA Assignment (AssignmentID);
lblAssignmentStart.Text = Current Assignment.dDateCreated.ToString();
lblAssignmentStatus.Text = CurrentAssignment.rTCAAssignmentStatus.dDescription;
if (!CurrentAssignment.dTCAAchievementLevel.IsNull)
{
lblAssignmentLevel.Text = CurrentAssignment.rTCAAchievementLevel.dDescription;
}
lblAssignmentCalcDate.Text = CurrentAssignment.dAchievementDate.ToString();
}
}
Code example passing through a query string parameter of an assignment id would be great.
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Oct 28, 2010
how can we hide the query string parameters in the URL in asp.net . but i am not interested to use url rewriting.
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Mar 18, 2010
i have a function which returns a value from a query string parameter, i use it in more than 10 places in the webapp thus i have to rewrite the code every time, again and again.so to make it short, is there any way i can embed the code somewhere and keep referring to it through out my app?
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Aug 7, 2013
Need to hide query string values from web URL, So that no one should be able to recognize what values are passing from one page to another.
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Mar 22, 2010
I'm having troubles passing a parameter to a handler in it's query string. I have a gridview with an image column, this column is defined as a TemplateField, as:
<asp:TemplateField
HeaderText="Image">
<ItemTemplate>
<asp:Image
ID="Image1"
runat="server" ImageUrl='~/ImageHandler.ashx?ID=<%# Eval("EmployeeID")%>'
/>
</ItemTemplate>
</asp:TemplateField>
As you can see, the ImageUrl is a call to a handler that receives the EmployeeID in the QueryString, under the name ID. When I run it, the ImageHandler method receives the following query string "ID=<%" instead of "ID=<the result of Eval("EmployeeID")>", and of course, it throws a FormatException when using it as an int to get the EmployeeID. (If I type ImageUrl="~/ImageHandler.ashx?ID=<%# Eval("EmployeeID")%>" (using " instead of ') the compiler returns the error incorrect server tag) The complete markup is:
<asp:SqlDataSource
ID="SqlDataSource1"
runat="server"
ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
SelectCommand="SELECT [EmployeeID], [LastName], [FirstName], [Photo] FROM [Employees]">
</asp:SqlDataSource>
<asp:GridView
ID="GridView1"
runat="server" DataSourceID="SqlDataSource1"
AutoGenerateColumns="False">
<Columns>
<asp:BoundField
DataField="EmployeeID"
HeaderText="ID" SortExpression="EmployeeID"
/>
<asp:BoundField
DataField="FirstName"
HeaderText="FirstName"
SortExpression="FirstName"
/>
<asp:BoundField
DataField="LastName"
HeaderText="LastName" SortExpression="LastName"
/>
<asp:TemplateField
HeaderText="Image">
<ItemTemplate>
<asp:Image
ID="Image1"
runat="server" ImageUrl='~/ImageHandler.ashx?ID=<%# Eval("EmployeeID")%>'
/>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
Could anybody tell me what am I missing here?
Rafael
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Jun 21, 2010
On the left hand side I have a tree navigation . It is populated from a XML file with . What I want to achive is when a querystring of the value of the XML file is matched , the tree node sets a setfocus or highlights on a particular node from the querystring passed through. I cant find a method which mimmicks findtreenode with value x and sets a selected .
e.g treenode is filled
home
|
folder 1
| -- item 1
| -- item 2
|
folder 2
| -- item 3
| -- item 4
when a querystring of SC=Item 1 is passed , it should search against the tree and open the folder branch and select item Item 1
I can use a for next loop and loop through each node but it will get slower as more nodes are added.
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May 29, 2010
I need to check if any rows are returned in a QueryString here's what I have so far.not sure what code to put to see if the row count is greater than 1
private void BindDataToGrid()
{
//MessageBoardEntities3 is ThemeableAttribute connection string name
int TID = Convert.ToInt32(Request.QueryString["ThreadID"].ToString()); // if Post ID is int
var context = new MessageBoardEntities3();
gvPosts.DataSource = from p in context.Posts
where p.ThreadID == TID
select new { p.Post1, p.PostID };
gvPosts.DataBind();
lblNoPosts.Text = "No posts found for this thread.";
}
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Oct 5, 2010
I have a dropdown list that won't populate data values from database using sql datasource. When i use the code behind, i was able to populate the data to the dropdown list. I dont know how to pass the Query String Parameter using code behind since i am new in asp.net. This is the code behind:
Imports System.Data.SqlClient
Partial Class PhotoAlbum
Inherits System.Web.UI.Page
Dim oConn As New SqlConnection("Data Source=.SQLEXPRESS;" & _
"AttachDbFilename=|DataDirectory|ASPNETDB.MDF;" & _
"Integrated Security=True;User Instance=True")
Dim oCmd As New SqlCommand()
Dim oDR As SqlDataReader
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
oConn.Open()
oCmd.CommandText = "SELECT [CategoryID], [Name] FROM Categories ORDER BY [Name]"
oCmd.Connection = oConn
oDR = oCmd.ExecuteReader()
Me.categories.DataSource = oDR
Me.categories.DataTextField = "Name"
Me.categories.DataValueField = "CategoryID"
Me.categories.DataBind()
oDR.Close()
oConn.Close()
End Sub
End Class
I will like to include the following information from sqlDatasource to the codebehind:
SelectCommand="SELECT [CategoryID], [Name] FROM [Categories] WHERE ([UserId] = @UserId) ORDER BY [Name]">
<SelectParameters>
<asp:QueryStringParameter Name="UserId" QueryStringField="ID"/>
As you can see from the code behind, i was able to add :
"SELECT [CategoryID], [Name] FROM Categories ORDER BY [Name]".
But i will like to add all of this:
SelectCommand="SELECT [CategoryID], [Name] FROM [Categories] WHERE ([UserId] = @UserId) ORDER BY [Name]">
<SelectParameters>
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Nov 21, 2010
I have a stored procedure that is close to working. It takes the values of a details view puts them into the respective table 'entity' then should also put the @@identity into 'entloan' and should put the LoanID which is in the query string of the page the detials view is loaded on, into the LoanID field of entLoan as well. Everything works except for getting the querystring value to pass to a insert variable on my stored procedure.
Stored Procedure
[Code]....
I do not have a LoanID Insert parameter set as it is not in entity table:
[Code]....
I have been playing around with different code in the backend but always get errors:
[Code]....
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Aug 24, 2010
how do i add a new parameter to an existing query string?
[URL]
now i need to add a new parameter say, showsearch.
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Oct 8, 2010
I want to send selected page value on querystring while navigating through paging. URL that is generating on paging are like this
[Code]....
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Apr 14, 2010
I want to add a class to a div inside my repeater control based on whether the query string value is true or false, so that I can style it differently.
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Jul 13, 2010
I have a standard Login form
<asp:Login ID="lgnExcel" DestinationPageUrl="login/data.aspx" OnAuthenticate="Login1_Authenticate" runat="server">
Is it possible to attach the Username as a query string with the DestinationPageUrl or reference the value in the code behind. I've tried lgnExcel.UserName.ToString()
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May 7, 2015
Append Query String Parameter Values in Current URL.
I have added Hyperlink in data list.which is Bind with their Respective data.When I Click that Hyperlink it Will Pass Url like this.
Area_id,Cuisine_Id and Veg_Id Bind in Datalist
[URL]
I want to Built a Filter Page Which Includes Area_id, Cuisine_Id and Veg_Idso when i Click to Hyperlink of Area then url like this. [URL] And then After i click to hyperlink of Cuisine then URL Like this.
[URL]
Similar Way
[URL]
So Basically I want Filter Data With Clickable query Strings Parameter Values
Problem : How can i Make Url Like this and it is Dynamic
[URL]
I want to Do Something like this SitePage Filter
[URL]
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Sep 13, 2010
In my website, where majority of the users are from Norway,I access some values via querystring(eg: email address).Since the members' email ID may contain Latin letters,I am confused and blocked at this level.
My requirements are,
1, I need to access the Latin letters from query string. Is there any thing different from normal query string operations?
2, I need to store these latin Email IDs to my DB ,which is mysql.Any precaution to be taken while storing latin letters to mysql?
3, I need to show these stored email IDs in my web page.Should I use localization(which I have not used yet) for correctly displaying latin letters in webpage?
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Oct 19, 2010
I need to set up the slide show based on a querystring parameter. I thought I had this figured out, but I clearly don't understand something about how the webservice works. I have this in the .aspx page:
<asp:Button ID="btnPrev" runat="server" Text="Prev" />
<asp:Button ID="btnPlay" runat="server" Text="Play" />
<asp:Button ID="btnNext" runat="server" Text="Next" />
<asp:Label ID="lblDesc" runat="server" />
<cc1:SlideShowExtender ID="SlideShowExtender1" runat="server" BehaviorID="SSBehaviorID"
TargetControlID="tstSlides"
AutoPlay="true"
ImageDescriptionLabelID="lblDesc"
NextButtonID="btnNext"
PreviousButtonID="btnPrev"
PlayButtonID="btnPlay"
PlayButtonText="Play"
StopButtonText="Stop"
Loop="true" >
</cc1:SlideShowExtender>
<asp:Image ID="tstSlides" runat="server" height="300px" Width="300px" />
And this in the code behind:.........................
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Sep 17, 2010
In the original site, master page has code-behind to check a query string parameter value. Depending on this value, code-behind dynamically modify some CSS property to hide / display master page elements.
As MVC2 has no code-behind because we are supposed to perform everything in the controllers, how should I proceed in this case ?
I see this : [URL]
It partially answers my needs but the query string processing is common to all pages. How can I move this processing in a common code section ?
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Jul 1, 2010
have gone through the N2 CMS documentation at length and can see no obvious set of steps to accomplish this.The task is to create a new Web Forms CMS app based on N2. Basically to take the Stripes theme and customize it.I originally downloaded the full source code and got it working on my development machine with SQL Server. After this I made various attempts at copying the files necessary to run the application into the new Web Forms folder in wwwroot. I got a lot of the same runtime errors that I see others getting, relating to missing DLLs, browser control adapters, and the like.
My current approach, per the "howto_install.txt", is to use the Publish function to move the required files to my wwwroot folder. This is really not desirable if I want to work on CMS sites for three different clients - think about it. Either way, when I bring up the new site in the wwwroot folder now, the home page link on the home page, all image links, and all admin links are now broken (this happened after moving site to IIS7). The install document mentions copying the "N2 management files" to the new folder - can anyone explain what is meant by this?Can anyone assist in outlining the basic steps in getting a new Web Forms N2 site working with full functionality in the wwwroot folder?
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Jan 13, 2010
I need to know how can I select a gridview row based on a query string data. In my case, the query string will contain the id that exist in the Table related to that grid. Is there a way to do this from the code behind? In other words, if I click a link with that specific query string, can I open the page and tell my grid to select a specific row based on the table row id?
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