Need To Be Able To Add/remove As Many Controls As The User Would Like?
Jan 12, 2011
I have page with a LinkButton on it that when clicked, I'd like to add a Usercontrol to the page. I e. The Usercontrol consists of three dropdownlists. The first dropdownlist has it's auotpostback property set to true and hooks up the OnSelectedIndexChanged event that when fired will load the remaining two dropdownlists with the appropriate values.
My problem is that no matter where I put the code in the host page, the usercontrol is not being loaded properly. I know I have to recreate the usercontrols on every postback and I've created a method that is being executed in the hosting pages OnPreInit method. I'm still getting the following error:The control collection cannot be modified during DataBind, Init, Load, PreRender or Unload phasesHere is my code:
What I am trying is, whenever user enters his Name and Address into the textbox on the webpage, I am going to displaying it in a Gridview. Now if second member will do the same thing thing the GridView will be updated and his Name and Address will display in second row and likewise for other users. But what happened in my code is when second user will try to add his record, it remove the record of first user and add the record of second at row1. I want the record should be added one after another. below is my code
I am making a website in asp.net c# code behind. My client told me that he want to remove the user who break the website law and then that particular user can create another account in our site with different emailid and password.
I need to remove a querystring when a user clicks a particular LinkButton. So for example if the querystring is [URL] when the user clicks on the Linkbutton, I want the url to be [URL]. The issue is that everything is on one page, and I am using asp:panel to show and hide different areas of the webpage.
I am trying to remove a user account (I am using the default authentication system), but I can't find a class/method which does this. Is there a way to do this?
Using tutorials and some examples of handling membership permission on our site, i have a page that was built using examples found in those pages.. Anyway, now that it is all setup and working ran into first issue.. If a role is setup with a space in the name like this ("Read Only") then you get an error when you try to add someone to that role. But if i change it to be ("ReadOnly") it works fine and no issues..
Inside my Asp.Net MVC application, in the comments section the user will be able to add html tags (p, h1....) but the problem is: how can I remove any malicious code (script...) from the code the user has submitted?
I have an ASP.NET website in which the user has the Login/Logout functionality. There are some pages which are viewable only if the user is logged in. Now, after the user signs out, I noticed that the user is still able to see this restricted page on pressing the back button. I want to create the functionality such that once the user signs out, the page should not be viewable. How can that be done?
P.S I am not using built in Login controls in ASP.NET
I am using "cookies" to maintain session in my asp.net azure application.
What I want is that when a user logs in to my website and remains idle for 15 minutes it should automatically log them out and redirect them to the login page.
I would like users to upload a profile picture when they register, and to then show that picture in a picture box control when they are logged in based on that specific user.
am stuck in a very simple problem but couldn't find a way to get rid of it.May be I clicked somewhere in my web application that is now a cause of underline every label, cell of table or whatever typing in it.how to remove default underline,
I have a web page where I only want controls to appear under certiain conditions. I know I can set the visible property to false but it still takes up space on my page, and I would like to take it out completely. Is there a setting to do this? I have tried Controls.Remove(Button1); but this code doesn't seem to work.
how can i find the value in the field which contain "," and remove it in sql e.g:
the field is: 11,12,13 how can i find 12 and remove it becomes=> 11,13 if the field is 12,13,14==> 13,14 if the field is 9,10,11,12 ==> 9,10,11 if the field is 12 only ,then result is empty
I have a web app where the user can create dynamic textboxes at run time. When the user clicks SUBMIT, the form sends data to the database and I want remove the dynamic controls.
The controls are created in the following code:
Table tb = new Table(); tb.ID = "tbl"; for (i = 0; i < myCount; i += 1) { TableRow tr = new TableRow(); TextBox txtEmplName = new TextBox(); TextBox txtEmplEmail = new TextBox(); TextBox txtEmplPhone = new TextBox(); TextBox txtEmplPosition = new TextBox(); TextBox txtEmplOfficeID = new TextBox(); txtEmplName.ID = "txtEmplName" + i.ToString(); txtEmplEmail.ID = "txtEmplEmail" + i.ToString(); txtEmplPhone.ID = "txtEmplPhone" + i.ToString(); txtEmplPosition.ID = "txtEmplPosition" + i.ToString(); txtEmplOfficeID.ID = "txtEmplOfficeID" + i.ToString(); tr.Cells.Add(tc); tb.Rows.Add(tr); } Panel1.Controls.Add(tb); The Remove section of the code is: Table t = (Table)Page.FindControl("Panel1").FindControl("tbl"); foreach (TableRow tr in t.Rows) { for (i = 1; i < myCount; i += 1) { string txtEmplName = "txtEmplName" + i; tr.Controls.Remove(t.FindControl(txtEmplName)); string txtEmplEmail = "txtEmplEmail" + i; tr.Controls.Remove(t.FindControl(txtEmplEmail)); string txtEmplPhone = "txtEmplPhone" + i; tr.Controls.Remove(t.FindControl(txtEmplPhone)); string txtEmplPosition = "txtEmplPosition" + i; tr.Controls.Remove(t.FindControl(txtEmplPosition)); string txtEmplOfficeID = "txtEmplOfficeID" + i; tr.Controls.Remove(t.FindControl(txtEmplOfficeID)); } }
I wrote this code and it works perfectly to add controls.
When I click on the link button "Add group" it correctly adds new DropDownLists and LinkButtons, the problem is that the removeGroup function (which is added also dinamically) does not work.
The Scenario: I have an asp.net website where I show a div popup on page load for taking a few user details. When a user inputs the details, or closes the popup, I set up a flag cookie so that the popup is not displayed again for the user. The div is in the MasterPage so that it is displayed no matter on which page a user lands first time. The div contains an UpdatePanel which has all the controls required for taking the details. This whole functionality is working fine.
The Problem: Now this div popup is not showing(by setting display:none) on subsequent postbacks(which I want), but the html markup is still loading with the page unnecessarily adding to the page size. What I would idealy want to do is: Check if flag cookie is set. If no, show the popup, else remove the popup's markup from the page. Now since the div is not a server control, I cannot possibly remove it and the all the controls inside it. So, I thought of removing the UpdatePanel from the page:
protected void Page_Load(object sender, EventArgs e) { if (Request.Cookies["flag"] != null) { if (Page.Controls.Contains(updpnl_contact)) { Page.Controls.Remove(updpnl_contact); updpnl_contact.Dispose(); } } }
But I guess this tends to work with dynamically added controls only, and since the control is added at Design Time, it is not being removed. Is there any way I can achieve this?
I'm trying to remove extraneous characters like quotes, commas, etc from my dataset. I get the fact in the standard way of doing things in your code behind you simply go
string data = data.replace(",",""); or something like this. However, a datasource doesn't seem to give me that capability. What can I do to make it do this? I'm importing data from an excel sheet into a gridview. The commas are goofing up my view. I'd like to replace any commas in the dataset with spaces. Here is the code I have.
