VS 2005 Make A Smart Code Where The Next User Controls Loads Instead Of The HTML?
Mar 16, 2010
I have an application where I make advanced engineering/science calculations.
The application consists of 25 equal calculation "lines" which I have made as user controls:
web form:
Code:
[code]....
However the performance is quite bad because each line load from a database. Each line becomes visible when the last line has been clicked so I only need in fact 2 lines to be loaded at the beginning.
Can I make a smart code where the next user controls loads instead of the HTML that I have made, where all 25 lines appears and loads but are not visible until the line before has been used?
I need a develop a smart dropdown list for an inhouse application
Let assume, i have a dropdownlist with the following values:
ABC EDF XYZ A123 B456
Now when the user types A in the drpdownlist (we can type anything onthe dropdownlist, but we can superimpose a textbox on it), the dropdwn list should sort itself and show only ABC and A123.
Is it possible to make the whole block of html code disappear all in once after clicking the link in c#? I was thinking about a placeholder but i'm not sure
I am wondering are there any standard mechanisms available to protect the asp.net asp code in the client browser ? I found some references to windows script encoders. Question is,are these script encoders encodes both aspx and code behind source ? If aspx is encoded with the windows script encoders then how client browsers can decode it? Are they aware of the encoding algorithms ?Or can we control the client browsers ( IE, Firefox, Chrome etc) to disable the view source option in the Tasks Menu when web site a loaded in them?
I just come across this W3C validation errors: I have a LinkButton1 on my .aspx file, and in my c# code I want to disable this LinkButton1 in certiain circumstance, hence i was using this code:
I did executed a db - contact form page successfully in the same project with the same connection string, but for this page its doing error and so I commented the binary file saving codes and all and put just simple 2 fields to see if the db is connecting and surprisingly getting sqlexception error and no data is written to the db. I am using sqlexpress 2005 and VS 2008. After this code I am listing the error I got.
Imports System.Data.SqlClient Imports System.IO.FileInfo Imports System.Data Partial Class picture2 Inherits System.Web.UI.Page Protected Sub upButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles upButton.Click '' SOME CODES ARE HERE Dim ctr As Integer = 0 Dim fleName As String Dim fleLength As Integer fleName = FileUpload1.FileName fleLength = FileUpload1.PostedFile.ContentLength Dim fleDatasource As New SqlDataSource fleDatasource.ConnectionString = ConfigurationManager.ConnectionStrings("CandidatesConnectionString").ToString() fleDatasource.InsertCommandType = SqlDataSourceCommandType.Text fleDatasource.InsertCommand = "INSERT INTO Picture (picLength,picName) values (&picLength, &picName)" fleDatasource.InsertParameters.Add("picLength", fleLength) fleDatasource.InsertParameters.Add("picName", fleName) fleDatasource.Insert() ----------------------- executed and now the prg returns to my code with the following sqlexception error box and while expanded I got this info ------------------------ message - Incorrect syntax near "&" Line number 1 Errorcode -2146232060
in order to evaluate an indexed property, the property must be qualified and the arguments must be explicitly supplied by the user. fleDatasource.Insert() the prg stops in the code with the green highlight on the fleDatasource.Insert().
You can for example enter the length and width of the web (VS.NET2005), when it runs out of range index error exception was unhandled by user code for chieudai
For performance reasons, I would like to put some code in javascript but am concerned that a user may pick up some proprietary formulas. Is it even possible to hide it or scramble it to the user?
I'm new to ASP.NET. I 'm trying to figure out how to make an HTML/ASP page where a user puts in data, either in text fields or selection boxes, and on clicking a submit button all of there selected data gets dropped either into a Access 97 Db or an excel spread sheet. Are there any examples out there of this? Is there a place that has already created this and I can just look and the code and figure it out for myself?
I am streaming HTML content into a Literal control in an ASPX page, and am continually running into a problem where the page loads fine the first time I try it, then subsequent attempts fail to load.
The purpose of the aspx page is to act as a 'broker' to another process that produces streamed HTML output, which then needs to be resolved by the browser.
The reason I'm not just using HtmlTextWriter to stream out the code to the Response object is that the streamed HTML contains framesets, and I am forbidden from modifying that code in any way, so I must keep the streamed code intact. In spite of the fact that frameset HTML hardcoded into the ASPX file would work, it does NOT resolve streamed frameset code!
In any case, streaming into the literal (by creating a string that is assigned to the Literal's Text property) works just fine -- the FIRST time I load that page. If I exit the page, then try to reinstantiate, it FAILS, producing an empty HTML file (containing only "<HTML></HTML>").
Everytime I try to create a new sql 2005 server project I get this error. Then after I hit ok VS 2010 crashes.
Could not load file or assembly 'System.Data.SqlServerCe, Version 3.5.1.0, Culture=neutrail, PublicKeyToke=89845dcd908080cc91' or one of it dependencies. The system cannot find the file specified
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="test.ascx.cs" Inherits="UserControls_test" %> <p id="XXX">aaa</p>
and here is the contents of my test.ascx.cs file:
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class UserControls_test : System.Web.UI.UserControl { protected void Page_Load(object sender, EventArgs e) { this.XXX.InnerHtml = "BBB"; } }
I get an error when I refer to the id, "XXX" (underlined above) in code behind which reads: 'UserControls_test' does not contain a definition for 'XXX' and no extension method 'XXX' accepting a first argument of type 'UserControls_test' could be found (are you missing a using directive or an assembly reference?)
I have tried XXX.InnerHtml and I have tried this.XXX.InnerHtml and get same problem.
How do I successfully refer to ID'ed HTML elements in code behind?
I am struggling with something that I guess should be standard practice really. I have a number of user controls that use some JQuery plugins. I do not really want to link to the extra CSS and JS files from my main masterpage as this would cause extra load to the user the first time they hit the site, (admittedly it would only be the once), so I was just putting them links into the top of the user control. Then I looked at my source HTML, not nice! Even worse for controls that repeat multiple times on a page.
So I was thinking is there a way of injecting them into the Head of the page when they are needed from the User Control. For that matter is there a way of doing it to the footer for JS stuff?
So I have a fairly simple web site which allows an Administrator to edit some data in a database which is displayed on some web pages.
The main navigation on the site is shown in the code snippet below. The Admin link goes to a Login.aspx which allows the Administrator to log in - once authenticated they get sent to the data edit page.
So my question is, how could I dynamically add a link to the data edit page in the <ul> list below once the user is authenticated ?
This would allow the authenticated user to see links to the secure pages in the main navigation bar.
I have a CMS page that allows the user to paste in or type HTML code into a TextBox in a FormView, then do an INSERT or UPDATE operation to an nvarchar(MAX) column in an SQL table. This is using an ObjectDataSource that refers to an insert or update method in a TableAdapter in my dataset.
When testing, the server initially warned me when I tried to input or update text containing HTML code; so I set the validateRequest="false" in my page header.
I gather this can be a serious security risk. What's the proper way to "validate" the string being input? Am I opening the database to SQL injection?
Only the site administrator has access to the CMS, but malicious could theoretically bust their way in...
but want to change this so it loads in my aspx.cs page so I can wrap it in an id (!IsPostBack) statement to stop the value getting set back to Top banner when the page is refreshed
I am trying to fire a Javascript call when an ASP.net user control to an aspx page. The Web site allows users to add user controls to a page (similar to adding a widget etc to a page like google widgets). But when the control is added the javascript does not fire, only if the page is refreshed will it fire the javascript. IF the next time the website is accessd and the controlis still there the javascript fires too.Do I need to use the RegisterClientScript method to register the call (setAutoTimer()) on the control load or OnPreRender event.In the User control I have this at the start of the ascx file:
I am maintaining a website that has .Aspx web pages with no code behind C# files. This has been a challenge for me, because I need to do the following:
1.) When the page first loads, display a Java Script popup message box.
So how can I do this if I don not have a code behind C# file where I can check for isPostback in the on page load method? Can the on page load method be placed inline in the .aspx code? Anyway I need to figure out how to answer my question 1 above.
how do I go about inserting into a database special characters such as the uppercase O, umlaut Ö Please understand that I have been able to insert the special character from inside MMS by putting an N in front of the value but when I run the SQL file from inside an ASP.net 4.0 page it comes up as a diamond with a question mark in it
I think the title says it all, I have an activeX control, that ask the user if he want's to install it every single time the page loads (Even if it is already installed). Can anyone point me in the right direction? What I have tried so far:
Setting new Guids for the class & interface. Changing interfaces names & method names. Changing version number Uninstalling and re-installing the activeX
