Web Forms :: Can't See TreeView From Code-behind Code Page
Feb 11, 2011
I have an aspx page with a TreeView control named TreeView1. in the Page_Load method I am trying to collapse all nodes except for the current node. I used this code in the Page_Load method:
CS0103: The name 'TreeView1' does not exist in the current context I am using a .NET 2.0 website and can't seem to reference controls in my .aspx page from within my code-behind page. I tried adding an instance of the TreeView before my Page_Load method call in the code behind, but, it still doesn't create a reference.
depending on the No. of the photos the code will be duplicated in the loop
Then I will display the result of the loop in label or in a textarea to let the user copy it any where
The problem is that while compiling my code it considers the HTML code as a part of the behind file and gives errors on the single quote, the double quote and on the parentheses
I have a page with a Textbox, a Button and a Label control. On Button_Click event , I store the value of Textbox in a variable called S using code behind.
I want to show the value of S in the Lable control using inline code but not using the code behind. ?
I'm using CRv9 and want to make use of Google Charts API for generating QR code on fly (in asp .net) and display it in the Crystal Report in a PDF format.I have spent the whole day looking for solution with no luck. The way we output the report is we use .rpt file, feed it with data and use Response.OutputStream to feed to browser. No CrystalReportViewer control hence CSS solution is not an option.
Now, I got as far as added an OLE Object from file with Link, which I would be overwriting every time the new QR code is generated. I apreciate that CR requires it to be a bitmap, so I was planning to download and convert the google's generated PNG file to BMP, that's not an issue. The problem is that Image in the report does not update after I replace the file. Meaning, it displays the original image, which was added as an OLE Object.
If I open this report in CR designer, the image gets refresh/updated and I'd have to save changes to the report to see this new image next time I generate a PDF file.The question is really how to achieve a dynamic image in Crystal Reports 9? Remember, Picture object did not have a Graphic Location property until vXI, so I cannot use that.
Manipulations with DataSets is not an option either as we're not giving report a datasource, instead we just map the fields with FormulaFieldDefinitions.
sample qr code url: https://chart.googleapis.com/chart?chs=150x150&cht=qr&chl=Hello%20world&choe=UTF-8
I have been asked to support a legacy app and I can't get access to the code behind files. I need to add a new feature that gets a list of items from the database on page_load, what way would adding an "in-page" page_load affect the compiled page_load?
When the user hits the Enter Key I want to go through and validate some fields and kick it back to the user if a fields doesnt' validate. With the above code, the btnEnter_Click still is getting called even though I have it to return. I tried return false; too incase I misunderstood something.BTW, yes the code is falling into the Else Statement when stepping through code.
I can't write in english well, but I must try to have an answer for my problem.I have a problem that I have not found a solution, regarding the integration of C # code in the HTML code .aspxI want to do a loop on the
<ajaxToolkit:TabPanel of <ajaxToolkit:TabContainer to have several tabs by a few existing data in a DB table.
Here is a moceau of my code:
[Code]....
This code gave me this error:
Message d'erreur de l'analyseur: 'TabPanel_<%= idMagasin %>' n'est pas un identificateur valide.Translation: Message parser error: 'TabPanel_ <% = idMagasin%>' is not a valid identifier.I removed idmagasin like this:
Translation: System.ArgumentException: An entry with the same key already existsThe result is that I found a great problem to insert a C # code in the HTML code .aspx unlike others languages like PHP.
I am using gridview to bind my data since GridView could not load more than 2000 records and also it takes long time to load the data. I decided to go with XSLT transformation. Here is the problem .... I am able to transform 6290 kb of data ( into a html table formated like grid view ) with in 5 seconds but to assign that HTML table back to the innerHTML of a div tag is not responding...
What is the best method to push large amount data(HTML Code) from c# into aspx web page?
PS: I used DIV innerHtml and also Literal Control but both are very slow if the size of the table increases.
I have a treeview which will be generated dynamically which need to be displayed on left side and when user clicks on a node it need to open a page on the right side of the same page. and each node has different aspx page. so whenever user selects a node the page details should be displayed on the right side .we can use an iframe on the page which will display the different pages clicked on the node.Is there any alternative i can use to display different pages based on the user selection on the right side without using iframe.
I have a control in a content page that I want to find the width and left attributes of the style. I am trying to find this from Javascript code that exists on the Master Page. How do I do that?
I was using a great tutorial by Scott on the ASP.NET website but the code used for the feedback form was in VB and I am used to C#. The project I am working on is in C# so I tried to convert the VB code to C# code. Unfortunately, I am new to ASP.NET and new to programming email code. Below I have what I have and in bold is what has the red lines underneath it. Is anyone familiar with email in C# for a feedback form that can point me in the right direction.
Sub selYear() Dim intYear As Integer 'Year list can be changed by changing the lower and upper 'limits of the For statement For intYear = DateTime.Now.Year - 20 To DateTime.Now.Year + 20 drpCalYear.Items.Add(intYear) Next 'Make the current year selected item in the list drpCalYear.Items.FindByValue(DateTime.Now.Year).Selected = True End Sub
If i've the button outside an update panel (basically i'm using RadAjaxPanel by Telerik) it is working fine. But when the button is inside an ajax panel, even if i click OK for deleting the records the server side code is not called.
I'm missing a the code browser when I create pages that have the code not placed in a seperate file. For pages with .asp.vb files I get the browser correctly.
I think it's called a code browser but just in case it's not I mean the dropdown that shows Page Events, Buttons and other controls that can be selected along with their events.
How do I turn on those dropdowns for pages with code behind that uses <script> tags in the actual .aspx page?
Included (Showing page events just under the tab):
