I'm trying to use the value of a QueryString as the file name for an image. I figured I could use a textbox to get a string value and then use that but I don't see how to use my Variable in the code page as a value in my .aspx page.Also, I thought there might be a way to set the value of an image control directly...I have this so far:
Imports System.Web.UI.HtmlControls
Partial
Class
[code]...
The following code works well as long as I pass a querystring value to the datalist.
Private Sub BindGrid()
Dim id As Integer = Integer.Parse(Context.Request.QueryString("id"))
Dim strConnString As String = ConfigurationManager.ConnectionStrings("Conn").ConnectionString
Using con As New SqlConnection(strConnString)
Using cmd As New SqlCommand()
cmd.CommandText = "select Id, Name from tblFiles where Id=@Id"
[Code] ......
However, the page errors with the message "Value cannot be null." if I don't pass a value. I know that DataList does not have an EmptyItem Property like a Gridview control. I do not want the page to error if I don't pass a value. Need info to deal with empty values in a datalist.
Most websites have pointed me to this code to use:
<FooterTemplate>
<asp:Label ID="lblEmpty" Text="No Result" runat="server"
Visible='<%#boolean.parse(([b]list[/b].Items.Count=0).ToString())%>'>
</asp:Label>
</FooterTemplate>
The 'list' throws an error. The error is "Too few type arguments to 'System.COllections.Generic.List". I am not sure if the code is written in C# and that is what is causing the error. It seems that it should work but I can not figure out the 'list' error.
My problem is there is a query string link web page in my asp.net+vb code web. When a visitor clicks in a link button the data pertaining to that person is diplayed i am willing to display the photo of the person in that page..
.vb
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Request.QueryString("PNO") IsNot Nothing Then
Try
' Read the file and convert it to Byte Array
Dim filePath As String = "C:AWINGPHOTOS"
Dim filename As String = Request.QueryString("PNO")
[CODE]
In my asp.net+vb web with access database there is a page which displays data as per query string and the string is PNO and all data is correctly displayed in gridview and dataview. there is a Image1.ImageUrl and i used the following code but it is not working
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
Dim PNO As String
PNO = Request.QueryString("PNO")
Image1.ImageUrl = "C:/wing/Photos/" + PNO + ".jpg"
End Sub
i have page that display titles of user messages when the user click the title he can read the all message. iv'e linked the title to new page using 2 id parameters (example: readMessage.aspx?userId=<%#Eval("userId")%>&messageId=<%#Eval("messageId")%>"), how can i send the 2 parameters to the new page without expose he parameters in the url section? (to avoid user to change the parameters and see other messages)
View 4 RepliesI am looking to pass a value into a query string. I am rendering a page right now called UserDetails.aspx?id=23 and in ASPX page I have a Gridview like this:
<asp:GridView ID="dgDetails" runat="server" AutoGenerateColumns="false">
<Columns>
<asp:BoundField DataField="txtName" SortExpression="txtName" HeaderText="User Name" />
<asp:TemplateField HeaderText="Permissions">
<ItemTemplate>
<a href="javascript:void(0);" onclick="javascript:pop('Perms.aspx?id=<%# DataBinder.Eval(Container.DataItem, "intUserAccount") %>&hu=<%# DataBinder.Eval(Container.DataItem, "intUserAccountWorkspace") %>', 600, 300);
return false;">Details</a>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
I want to take the "id=23" query string from the current page and pass it onto this link (in bold).
I have a master-detail page consisting of a databound GridView and ListView. It's pretty standard - when you select a row in the GridView is shows up the ListView. The problem I'm running into is when I want to link to that page with a specific row pre-selected in both views. It seems like it should be easy enough, but I just can't figure it out. Currently, the ListView is connected to the GridView with a ControlParameter in the SelectCommand.
View 4 RepliesI have tried almost evrything and nothing seems to work,,, I dont see errors but the code is not firing when I bind in the properties of the button control ,,nor the code behind.
aspx
[code]....
I have a datapager control
<asp:DataPager ID="DataPager1" QueryStringField="pageid" runat="server">
The control works perfectly when the QueryStringField "PageID" not not encrypted. When it's encrypted the control no longer works. Is there a way to assign the page number in the back end? Is there a way to work with encrypted query string with this control?
im creating a photo album just like facebook album featureThe problem im facing now is unable to add new picture to a particular albumBelow is the code to pass a querystring to the addphoto.aspx in a datalist, i bind the sqldatasource using vb in the codebehind
[Code]....
[Code]....
I put a link on a datagrid that when loaded is attacehd to a url from the DB. Well when the Db holds nothing for that URl I need to be able to redirect to antoher page. Here is what I have so far. But It does not work, still using asp.net 1.1. Am i doing this correct or is there a different way.
<asp:TemplateColumn HeaderText="Fix Page">
<ItemTemplate>
<a href="<%# DataBinder.Eval(Container.DataItem, "strFilterPage") %>" target="_blank">Fix Page</a>
</ItemTemplate> [code].....
I've got a formview that does a simple 'SubTotal' calculation based on some checkbox inputs. I write out the subtotal to an asp:label control. I want to be able to also be able to write that value into the QueryString so I can carry it over to another page. I can't seem to access the label from my codebehind (intellisense doesn't find it). I assume I'm not making the correct reference to the formview label control, but I don't know how to go about getting at it.
[Code]....
[Code]....
I have a repeater on which I need to bind the name returned by the querystring, the binding should be don on the following request : Request.QueryString("file_type")
[Code]....
basically the file type represent a foldername on the server, and this changes depending on the request
I want to paging my datalist but the datalist takes a querystring field catID from categories repeater. How can do I paging my datalist with catID querystring?
View 2 RepliesI have used querystrings in many webpages. When user click hyperlink then it moves to next page but there is a very long string is being displayed in the Address bar of the browser.
I just want to show like this:
[URL]
Not like this:
[URL]
I have a form that has 2 querystring variables ID and FormID being passed to the page. Also on this page I have 2 different DataSources that outputs to a Detailview depending if the FormID is 1 or 2. I would like to be able to add a show/Hide command to Show only the DetailView that is selected and Hide the other. I have researched and found hat people are using a Multiview code, but I have not been able to find a working example code.
View 2 RepliesI am having a formview control with paging enabled. It's a simple page used for viewing pictures. (It's from the personal web site starter kit with some modification)
[Code]....
I would like the formview to pass not only the pageindex value but also the Next or previous picture's unique ID called in my case PictureID?
I've got a request to redesign the web application to allow support for up to 3 users (before there was data only for one people on page). Since I don't want to build entire page again I wonder how is possible to replace value which is for example:
[Code]....
with value retrieved from querystring?
Users are displayed on page in row: querystring value ID(for example 123), QS value ID2(for example 231), QS value ID3(for example 343).
Users are all stored in one row of the same table. If second user is selected then value of his/her should be taken as value of ID.
I'm using quite a lot <%# Eval ("ID")%> on my page and I don't want to replace it with some object but just overwrite it's value according to querystrings values.
I hope this doesn't sound too complicated as the real problem is fairly easy but don't have ideas how to deal with it. I've thought I can put to replace the value retrieved from SP but I can only change parameters. And ID is not select parameter.
I Have A GridView and DataSource with two databound colums and a templateColumn which holds an Imagebutton:
[Code]....
I can display my SessionID in the new (Boxes.aspx) page by using the following:
[Code]....
I do however want to pass more than one value using this method.
I've tried this:
[Code]....
But I'm sure my code is not correct @ the Eval declarations as I'm getting an error here...?
I have a web apps that has different relations data, displayed in the repeater controls. One of them is When I click the Book it should display chapters related to that book.
It works most of the time but the problem is: if the book contains '&' it'll truncate the data after that and no chapter data display due to no matching with the book name.
I did like this:
[Code]....
and in chapter_Matches.aspx:
[Code]....
Let say the book name is:
'chemistry' it works in this case and in the chapter_Matches.aspx page the str=chemistry and the url is chapter_Matches.aspx?book_name=chemistry
but let say book name is chemistry & physics
url will be chapter_Matches.aspx?book_name=chemistry & physics but the str value at chapter_Matches.aspx will be str=chemistry.(physics will be truncated after & sign)
and no data display due to not matching the book name.
How can i use querystring for this-
Here in below code i have used querystring for sending imagename from this page to another page. Now i just want that with this imagename in also want to send span element's text with same querystring.How can i achieve this?
[Code]....
i need a image control, who is able to convert the binary image data into image automatically, i find one which is paid control by telerik, but i need a freeware of it.
View 3 RepliesI use the UpdatePanel, which works like I want. I do have a problem with refreshing the website when I want to edit data. I think the problem in the QueryString.
Can be done any other way to I get ID?
My code:
[Code]....
Delete command works because the position is obtained automatically. When editing is required I get the Id, since I do not use the classic command Edit.
i have a page, when the page loads, nothing shows up, when i pass the querystring on the browser as [URL]
I want it to work when the page load not when i pass the querystring on the browser.
Here is the code:
[code]....
[Code]....
[Code]....
[Code]....
in my page am having one dropdownlist,Textbox and Search Button.Dropdownlist consists of Problem id,Phone No,Email,CardNo. when i select any of the above and enters a related string in textbox and click on search button a gridview will appear with related details. Everything is fine. but my challange is to display this gridview in next page.. how itz possible. i think request.Querystring helps me.but i dnt know how to write dis.Here am Pasting my code. Aspx.cs
[Code]....
Aspx code:
[Code]....