I have an usercontrol with fck editor for allowing user to add note in my aspx page, which allows the user all kind of text formatting.My need is that I have to access user control from the code behind and collect the content as the same format some one has entered in the fck editor.How can I do this?
I'll elaborate on Brian's answer. You need to expose the content from the UserControl by adding a public property:
public string Content
{
get
{
return editor.Content;
}
}
Then to get the content from the user control, just called the property from the Page's code beind:
protected void Page_Load(object sender, EventArgs e)
{
string content = this.UserControl1.Content;
}
In the page, the page code-behind should be able to use it directly like:
this.uc1.<uc code-behind properties or methods>
So you can expose things from your user control by adding public properties or methods.
Related
I have an authentication roles-based system: different roles are redirected to different folders and in each folder there is a web.config that allows the access only to a particular username.
Few roles have the default page in common with a gridview that react in different ways depending on the role(different columns are shown, events trigger different methods, etc.).
so my problem is that everytime I need to make minor changes to a page I need to copy/paste the same changes to all the others default pages in the other folders.
In terms of code I solved by creating a DefaultFather class which extends System.Web.UI.Page and every other Default class inherits from DefaultFather. In this way, if I dont declare a Page-life-method, the DefaultFather method will be triggered.
but what about the graphic part(html, javascript, asp components, etc...)??
I created a NestedMasterPage just for the Default pages but everytime I need to change the appearance/behaviour of controls(gridview, buttons, linkbuttons) I must use the FindControl() method.
there isnt really another way to solve this problem?
Im thinking of using the Page_Load() method to search for each control with FindControl() and save them into attributes for later usage but it doesnt really look like a good solution.
It would be nice if I could use the masterpage components as properties but I think that in order to do that I should create public properties and I dont know if it will cause some kind of security problem.
any suggestion?
btw, if masterpage is the solution, should I remove the DefaultFather class and place the code directly into the masterpage? or is it a good idea to have another class just for the code?
I'd say there's nothing wrong with having both a master page and a base class for your page. They serve different purposes. The master page is generally all about layout, and the base class would be about page functionality.
If you want to manipulate the markup on your master page, rather than accessing the fields directly, I'd say create a logical function which does what you need it to do, and let the master page do it.
// Site.Master.cs
public void HideSubmitButton()
{
btnSubmit.Visible = false;
}
// Default.aspx.cs
protected void Page_Load(object sender, EventArgs e)
{
((SiteMaster)Master).HideSubmitButton();
}
I'd probably wrap that cast so you can use it more easily - that is something that would belong in your base class:
// DefaultFather.cs
protected new SiteMaster Master { get { return (SiteMaster)base.Master; } }
// Default.aspx.cs
Master.HideSubmitButton();
EDIT
Per your comment about attaching event handlers - if you need to attach events to objects that live on the master (which may not be a good idea - ideally the event handler for something living on the master lives on the master - but if you really need it) you can expose methods to do that as well, like:
// Site.Master.cs
public void AttachEventHandlerToGoButton(EventHandler eventHandler)
{
btnGo.Click += eventHandler;
}
// Default.aspx.cs
Master.AttachEventHandlerToGoButton(DoMyThing);
private void DoMyThing(object sender, EventArgs e) { }
or if you want to get fancy, write a wrapper event:
// Site.Master
<asp:Button ID="btnGo" runat="server" OnClick="btnGo_Click" />
// Site.Master.cs
public event EventHandler GoButtonClick;
protected void btnGo_Click(object sender, EventArgs e) {
if (GoButtonClick != null) {
GoButtonClick(sender, e);
}
}
// Default.aspx.cs
Master.GoButtonClick += DoMyThing;
private void DoMyThing(object sender, EventArgs e) { }
Also see my edit on the Master wrapper - you need the base. there to avoid a stack overflow.
I have a series of user controls of the same type on the same aspx page. When each user control loads, I want it to check some information in the aspx page, for instance, who is logged in, which session it is, and son on.
For now, I'm returning a hard-codded value. GetUserDBName() is located inside the user control
private string GetUserDBName()
{
return "UserDBName";
}
How does this method access data located in the aspx page that contains the user controls? And below is how the session is defined inside the aspx page.
private string strDBName = string.Empty;
protected void Page_Load(object sender, EventArgs e)
{
strDBName = Session["UserDBName"].Trim();
}
Thanks for helping
EDIT
The parent page's name is NewHireCheck.aspx. The user control's name is CheckListByDepartment.ascx.
The user control keeps a reference to the container page through the Page property.
So in your user control code you are allowed to do the below:
var resultFromPageMethod=((yourPageType)this.Page).APageMethod();
I am creating an object at server side of an aspx (test.cs) page from a class (asp.net 2.0 C#)
public partial class Vendor_VendorUsedTicketsPopup : System.Web.UI.Page
{
ReportInvoice _objReportInvoice = new ReportInvoice();
protected void Page_Load(object sender, EventArgs e)
{
_objReportInvoice.ReportId = 1;
}
}
as you see above before Page Load I am creating a new ReportInvoice object and on page load I am setting property ReportId to 1
On test.aspx I want to use the ReportId value bu using the _objReportInvoice object like below
<div><% _objReportInvoice.ReportId; %></div>
But when I build the site I get the error
The name '_objReport' does not exist in the current context
I know that I can create a public integer for ReportId above Page_Load and use it on aspx page. That works fine , but I want to use class object properties on aspx page.
What is the way of doing sth like that ?
Thanks...
You need a = sign in there to print it to the page:
<div><%= _objReportInvoice.ReportId; %></div>
However, I would suggest just using a Literal or Label control there and then setting it's text to the ReportID property in the code behind. Inline code like that can make your HTML messy.
Remember that your .ASPX markup page inherits from the codebehind class.
This means that unless you declare your field as protected or public, the .aspx will not have access to your field.
You need to add an access modifier to your field to make it non-private.
In ASP.net 2.0, the PreviousPage property of a web page does not have a ViewState collection. I want to use this collection to transfer information between pages.
View State is exclusive to the page.
If you want to transfer items,
you can persist the data in a database, file, forms auth ticket or other cookie (Dont use Session or HttpContext.Current.Cache if you can help it)
do a cross page post - from your first page, post back to the second page (and get the details from HttpContext.Current.Request.Form[] collection)
put the values in a query string
Use HttpContext.Current.Items instead...ViewState is only good for the page it is on.
You can avoid using PreviousPageType directive, by using some base page class that can hold your object.
For example you have class
public class BaseCrossPage:System.Web.UI.Page
{
public List<Guid> Invitees = new List<Guid>();
}
So if first page derive from this class
public partial class Default : BaseCrossPage
{
protected void Page_Load(object sender, EventArgs e)
{
this.Invitees = LoadInvitees();
}
}
Then the page that you have posted to can access that object, assuming that previous page derived from BaseCrossPage...
public partial class secondPage : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
BaseCrossPage p = (BaseCrossPage)PreviousPage;
List<Guid> Invitees = p.InvitedTeams
}
}
kind of "viewstate" between pages...
You can't directly. (See http://msdn2.microsoft.com/en-us/library/ms178139(vs.80).aspx
Here's what you can do -
Create public properties on the first page exposing the information you want to share. On the second page, set the PreviousPageType to the first page in the header of aspx file:
<%# previouspagetype virtualpath="~/firstpage.aspx" %>
Then, get the values of these properties in the Load event of the second page:
If (Not MyBase.IsPostBack) Then
_someValue = Me.PreviousPage.SomeValue
End If
I was wondering if it is possible to do something like this:
<uc1:TestControl ID="TestControl1" runat="server">
<div>More random HTML, etc...</div>
</uc1:TestControl>
I got an error of "Type 'System.Web.UI.UserControl' does not have a public property named 'div'.". Doing a little research, I found I could add the following property to the server control:
[ParseChildren(false)]
public partial class TestControl : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
}
}
Is it possible to read the content from an ASP.NET control?
Edit: Changed wording to reflect that I am curious if you can do this with either a server or user control
In a server control, you would create a property that implements ITemplate to contain that content. I'm not positive whether that is possible in a user control, but it may be.
yeah it is possible
check this MSDN Article about creating templated user controls, plus you can add [ParseChildren(false)] to the user control class so you can see them from the page holding them.
http://msdn.microsoft.com/en-us/library/36574bf6.aspx
hope this helps.