I have scenario, where there are html hidden fields, the page can be redirected to itself, with parameters, I have sessions too. Now depending on session value I want to set some hidden values, so that it can be picked up from javascript and can do certain operation. But, the problem is I have no idea about how to get/ set values into html controls using asp.net, and also do not know whether this is possible or not. it is imperative that I need some way to hold some data that can be set using asp.net and can be picked up by javascript. Since session can not be used for this purpose, so I need some other way.
I am getting unlikely html tags for hidden fields in my website when redirecting to the page. I do not get it all the time but I am getting it frequently. e.g.: I was support to get
I've been using .NET for a little while now. And, I now want to learn to use it the RIGHT way. And, by that, I mean I shouldn't be using hiddenfields on my .aspx page and setting values for those hidden fields in my codebehind. Problem is, I don't know how to ask the question.. so bare with me.. getting a value from a gridview, detailsview, or in this case a DataList when it's bound on a .aspx page, and passing it into my stored procedure? Here's my code of how I do it now..
here's the label for the Department from my datalist, which is on my .aspx page <asp:Label ID="lblFullDept" runat="server" Text='<%# Eval("FullDept") %>' />
here's the hidden field from my .aspx page <asp:HiddenField ID="hdnFullDept" runat="server" />
And now for my code behind - where I find the value during the databound of the datalist, and then set the value equal to the hidden field.
Protected Sub dlInfo_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataListItemEventArgs) Handles dlMnfo.ItemDataBound Dim lblFullDeptCompare As Label = CType(e.Item.FindControl("lblFullDept"), Label) hdnFullDept.Value = lblFullDeptCompare.Text End Sub
And finally, the sql portion, where the value is passed as a parameter...
Protected Sub doInsertActivation() Dim conn As SqlConnection Dim comm As SqlCommand Dim reader As SqlDataReader Dim connectionString As String = ConfigurationManager.ConnectionStrings("xyz").ConnectionString conn = New SqlConnection(connectionString) comm = New SqlCommand() comm.Connection = conn comm.CommandType = Data.CommandType.StoredProcedure comm.CommandText = "abc123" comm.Parameters.AddWithValue("Department", hdnFullDept.Value) conn.Open() reader = comm.ExecuteReader() reader.Close() conn.Close() End Sub
Yes, this works, but I just feel like I need to learn a more efficient way of doing this, as I'm constantly grabbing data and inserting it into sql.
In order for hidden-field values to be available during page processing, you must submit the page using an HTTP POST command. If you use hidden fields and a page is processed in response to a link or an HTTP GET command, the hidden fields will not be available.
If I add a HiddenField control at design time and set a value in it at design time or in the Init event in ASP.NET, why would I not be able to read/process the value when a page is first requested?
I'm using Master Page Structure on my webpage. Although I Added "EnableViewState="false" ViewStateMode="Disabled"" in both Master Pages and Web Pages, I still see Below Hidden Field on my web page which cause W3C Validation Error. I want to know How Could I Remove these fields.
I have a Grid view which is being populated from a database. Now I want to add a button that has its own html with some Hidden fields. I have introduced an Template Field and put the html in that field which works fine. But now I want to send the values in hidden field dynamically. i.e. the Id and value comming form the database.
If I create a new project, start this project and look at the source code, I see that there are some additions to the original code. The first this, what is "ViewState" and what does the hash mean? Why is the input control hidden?Here an example:
According to MSDN and the MCTS self-paced training, asp.net can use Hidden fields for client-side state management. The book material goes on to say view-state is more secure than hidden fields because the data is encrypted. I must be missing something here. I setup a Label and made it hidden. I can store data in this hidden label and it won't even be sent to the client browser. This not only works like server side state (note the runat=server), but this seems more secure than view-state because there's no need for encryption as the client can't even see the field.
I am having two hidden fields which are server controls and i set the values in the javascript function. But i want to clear them as soon as one of my code behind method gets updated. As my page is not refreshing the hidden fields are not getting cleared. But i dont want page refresh.
So how do i clear the hidden field values without refreshing the page.
I am using hidden fields to save some preset data, but upon postback they appear to disappear.
Here's what my controller actions look like:
[Code]....
The view is coded like this:
[Code]....
But when the POST action receives the object back, some of the fields have become null. The FormCollection, however, contains all values. I realize I could just take everything from the formcollection but it's probably better practice to use the object, right?
I have a user control which has a gridview with hidden fields in some of the template columns. The grid columns are created and bound by code dynamically in each postback and not in design mode. The gridview is placed in an update panel. In my aspx page where i use the user control , there is a dropdown which fires postback and based on the selected value of the dropdown the grid data gets filtered. The dropdown in aspx is not part of any update panel.
After the postback of dropdown, the grid data gets filtered and the grid is rebound with fresh values. The values in the controls like label, button or link button are bound correctly. But the values in the hidden fields are not refreshed and always points to the values of the rows that was generated before the postback of the page (initial page load).
I used the script where the image array has static images.I want to convert it dynamically by finding my images names from index.aspx.cs files which are stored in hidden fields.
I want to split this hidden filed and assign it to imagearray.how can i do this
var mygallery2=new fadeSlideShow({ wrapperid: "fadeshow2", //ID of blank DIV on page to house Slideshow dimensions: [568, 313], //width/height of gallery in pixels. Should reflect dimensions of largest image imagearray: [ ["images/1.jpg", "", "", ""], ["images/2.jpg", "", "", ""], ["images/3.jpg"], ["images/4.jpg", "", "", ""] //<--no trailing comma after very last image element! ], displaymode: {type:'auto', pause:2500, cycles:0, wraparound:false}, persist: false, //remember last viewed slide and recall within same session? fadeduration: 500, //transition duration (milliseconds) descreveal: "always", togglerid: "fadeshow2toggler" })
I am using a third party gateway. The third party gateway does not support query-string , so i will need to post the form to pass the values to the given URL and another thing is that they don't expose the web-services so we need to use their page and that means we need to host it in an iframe in asp.net
so what i did is that i have hidden fields that will be used as parameters as depicted below
Now the purpose of this , is to load the iframe after the page load event of the asp.net gets fired.
Now my problem here is that when the iframe loads , it does not pass the parameters to the url that is being set in the iframe.
I have attached the example, project. (2kb)
When you run the project you will notice when the iframe loads there is an Error
"NO VCS ID"
now this means that the parameters were not passed when the Iframe loads , i can understand because it seems like iframe does not do a full form post. so to demonstrate what i want, click the proceed button and you will notice it will give you a page with no errors and it will be a page where credit card details are required , i want to iframe to load that the first time.
I am facing one asp.net server side issue using vb.net the problem is i declared one html input hidden field in my page, the name is hidden1. but when i going to call that name into server side code, that time i got the below error, <b>Name "Hidden1" is not declared</b> Code below:
I want to integrate paypal inside my shopping cart. For that it requires a html form to be embeded inside .aspx page with the action to paypal and method is post. Inside that form there are some hidden input filed. I want to assign one of those hidden field's value from server side code so i need to access that filed from server side. But how? Here is my form:
This is the basic question , but I am not sure how the HTML data is handled when submitted through any registration form.
Consider I am having a Registration form where I am entering new customer. And while entring the details of customer I have put some HTML data into the textboxes(simple textboxes ) provided for. Show should I handle this.
