Web Forms :: Render Controls From String?
Sep 29, 2010
Iam getting the below string in a variable"result" after xslt tranformation. if i do Page.ParseControl(result) iam able to render controls to the page. But the requirement is different. I have 4 place holders in that aspx page.I need to bind div id="Section1" to placeholder1, div id="Section2" to placeholder2 and similar the other two sections also to the corresponding place holder. how can i loop and add controls to corresponding place holder.
<div id="Section1" xmlns:asp="remove">
<asp:Label id="lblSection1" runat="server" text="section1" />
<asp:RequiredFieldValidator ErrorMessage="Mandatory Field-1" runat="server" ControlToValidate="txtNameSection1" />
[Code]....
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Similar Messages:
Sep 29, 2010
Iam getting the below string in a variable"result" after xslt tranformation. if i do Page.ParseControl(result) iam able to render controls to the page. But the requirement is different. I have 4 place holders in that aspx page.I need to bind div id="Section1" to placeholder1, div id="Section2" to placeholder2 and similar the other two sections also to the corresponding place holder. how can i loop and add controls to corresponding place holder.
[Code]....
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Feb 28, 2010
Let's say I have a string that I retrieve from a DB like: "Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et {{Hyperlink|navigateurl='/foo.aspx'}} dolore magna aliquyam."
This string may now get assigned to the Text-property of a label. What I want is to parse {{Hyperlink|navigateurl='/foo.aspx'}} and replace it with
<asp:HyperLink ID="IDLink" runat="server" Text="foo" NavigateUrl="/foo.aspx"/>
and assign the whole text including the HyperLink-Control to the Label.
Is that even possible? I think I could use reflection to create the control and set the properties. (the HyperLink-Control was just an example) But can I manage to insert the asp.net control back into the string to ensure the hyperlinks rendering as server contorl?
I hope you understand what I want. If not, feel free to post comments.
Edit1:
what do you mean by "assign the whole text including the HyperLink-Control to the Label."? can you xplain a bit, the reason for doing so ?
I think it won't work to assign the control into the string, because a asp.net control cannot be fit into a string.
After some thinking I found a way to achieve my goal. That would be to create a placeholder (I name it A). Therein some Literal control will be added. In addition I would create a placeholder (I name it B), add my Hyperlink into B, and add A into B. But I think is way to overkill.
The reason why I started thinking about this, was to gain access to Server.MapPath without replacing occurences in the string. I want to be able to use relative paths in my CMS, that get rendered like the NavigateUrl property from a hyperlink. Nevertheless I think my question with the dynamically creation is worth thinking about
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May 12, 2010
i'm just new in ASP.Net.
I want to render a Web User Control (has many server controls inside of it) as a HTML string, is there anyway to do it?
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Feb 24, 2010
I've got a page that I'm using as an e-mail template. I'd like to spin off a new thread, take the rendered page, and put it into an e-mail. Is this possible? If so, how? I haven't had luck so far.
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Nov 21, 2010
I have the following code:
Model:
[Code]....
Controller:
[Code]....
and the View:
[Code]....
The thing is that the HtmlContent string is getting "auto decoded" so the paragraph-elemnts gets renderd as <p>(sry might mix up decoding and encodeing..Im always getting confused by those)
anyway..I want the string to render as proper Html...how can this be achieved?
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Jul 13, 2010
I would like to get the html code a view would generate in a string, modify it in my controller, then add it to my JsonResult.
I found code that would do what i'm talking about from a partial. I would like to do it from an aspx View though.
Extra explanation:
Let's say I have a page Frame.aspx that /Controller/Frame will return I would like to get my hand on the response before it out so I can to wrap it with jsonp. I do not wish to edit the return result in code every time, this is why I want to load the view programmatically.
/Controller/Frame currently returns Frame.aspx's content: <html><body>hello</body></html>
Let's say there's a function that renders a view in a string builder
StringBuilder sb = new StringBuilder();
RenderView(sb, "Frame");
now take sb and wrap it with jsonp:
[code]....
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Oct 11, 2010
I need to dynamically modify the contents of a column in a GridView1 before it is displayed. Basically, I need to convert every 'Environment.NewLine' in a field to a so it displays as a new line on an ASP.NET page. How do I do this?
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Jul 7, 2010
I am trying to render a hyperlink to html. ( etc)
When the page loads it works fine. (and lots 10 links) on the update panel it hits the same function and tries to get another 10 links. I set the navigationURL to something like
"../Folder/Mypage.aspx?498592ghjgfosdfgo"
It is set identically both times(load and updatepanel postback) but when i try to render it to html the second time (on the update panel) it adds "../" to the front so i end up with
"../../Folder/Mypage.aspx?498592ghjgfosdfgo"
The function where it changes here
Public Shared Function RenderControl(ByVal c As Control) As String
Dim sw As New IO.StringWriter
Dim htmlw As New HtmlTextWriter(sw)
c.RenderControl(htmlw)
Return sw.ToString
End Function
c is the hyperlink which has the propertry navigationurl (this never gets changed) but the sw which ends up looking like this on load
<a id="lnkView" href="../Folder/mypage.aspx?AnTfh0ZsFP9NCxiBpM+Zd11cI+AUOF93HZQtumPgzMKky0PejGrda9I6kCFn070dOsIfq0M2AgI=">View</a>}
and this on panel update
<a id="lnkView" href="../../Folder/mypage.aspx?AnTfh0ZsFP9NCxiBpM+Zd11cI+AUOF93HZQtumPgzMKky0PejGrda9I6kCFn070dOsIfq0M2AgI=">View</a>}
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May 20, 2010
Is there a way that I can create a page and master page and have some of the values dynamicly loaded thru selecting items in the querystring parameters.....
then is there a way that I can render that page only to a text string? by calling it with some querystring parameters and have it render to a string?
I guess my question is only the second part as I already know how to create a page with masterpage etc...
I also know how to create an email and snd it. I just dont know how to render the page to a string
I guess what I mean is that I want to render the page on the server in code behind and then have a text string which would be the rendered HTML in a string variable of some sort... I dont want to render the page to a users browser... in fact there would be no user at all connected (there is no need to be)What I want to do is (in a code module) load up a page created and stored in my wed app directory. I want to be able to load it from a code module and to bhe able to load it with some parametsrs and just get the rendered HTML.
I am trying to write a module which will send a HTML email to registered users and I want that HTML to be dynamicly created depending on some values in the recipient user,s profile.
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Feb 3, 2010
I have some code that is used to replace certain page output with other text. The way I accomplish this is by setting the Response.Filter to a Stream, Flushing the Response, and then reading that Stream back into a string. From there I can manipulate the string and output the resulting code. You can see the basic code for this over at [URL] However, I noticed that Page Caching no longer works after the first Response.Flush call.
I put together a simple ASP.NET WebApp as an example. I have a Default.aspx with an @OutputCache set for 30 seconds. All this does is output DateTime.Now.ToLongTimeString(). I override Render. If I do a Response.Flush (even after the base.Render) the page does not get cached. This is regardless of any programmatic cacheability that I set. So it seems that Response.Flush completely undermines any page caching in use. Why is this?
extra credit: is there a way to accomplish what I want (render output to a string) that will not result in Page Cache getting bypassed?
ASPX Page:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="TestCacheVsFlush._Default" %>
<%@ OutputCache Duration="30" VaryByParam="none" %>
<%= DateTime.Now.ToLongTimeString() %>
Code-behind (Page is Cached):
protected override void Render(HtmlTextWriter writer)
{
base.Render(writer);
}
Code-behind (Page is not cached):
protected override void Render(HtmlTextWriter writer)
{
base.Render(writer);
Response.Flush();
}
Code-behind (Page still is not cached):
protected override void Render(HtmlTextWriter writer)
{
base.Render(writer);
Response.Cache.SetCacheability(HttpCacheability.Server);
Response.Cache.SetExpires(DateTime.Now.AddSeconds(30));
Response.Flush();
}
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Feb 9, 2011
I am trying to use aspx pages as an email templates. There will likely be a bunch of objects on the page which will be used as replacements in the html. Because it's an aspx page I'll be able to use databinding, repeaters, etc. At run time, I want to be able to instantiate the aspx page from its path, pass in a bunch of properties, and then get the rendered result of the page and email it. This seems pretty straightforward from a asp.net website (maybe using BuildManager or Server.Execute.) However, I want to be able to use the same templates via a console application by just loading up a page object from its filepath. Is this possible?
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Feb 12, 2011
I've been watching a video on Scott Hanselmnn teaching MVC 2 tricks/tips. He mentions how MVC 2 by default uses ASP.NET Web Forms view engine to render the output of the views; he mentions that the web forms view engine is a little slower than it could be for MVC 2 since it generates a control tree and then outputs the HTML to the page (I hope I said that right).
I was wondering what he meant by web forms generating a code tree before outputting the HTML to the page. Does anyone have insight on the view engine of Web forms and the steps of the rendering process works for ASP.NET and MVC2?
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Nov 3, 2010
Is there a way to render gridview as HTML so that i can send it via email?
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Dec 20, 2010
I have the following code that Redirects the GridView to HTML
GridView GridView1 = new GridView();
GridView1.HeaderStyle.Font.Bold = true;
GridView1.DataSource = JTB.GetOperationsListData((int)Session["TicketID"]);
GridView1.DataBind();
GridView1.RenderControl(htmlWrite);
Response.Write(stringWrite.ToString());
Response.End();
I have a column in this Grdiview called barcode I want to set the font for jus that column before rendering it to HTML how do i do that
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Apr 1, 2010
I am trying to get a hyperlink to show up in each field of the "Title" column in the gridview below, but it doesn't render as a hyperlink:
ID
Title
City
State
115779
<a href=job_details.aspx?jobID=115779>Online Advertising Inventory / Yield Manager (773044)</a>
Washington DC
115801
<a href=job_details.aspx?jobID=115801>Administrative Assistant (778554)</a>
Washington
DC
115840
<a href=job_details.aspx?jobID=115840>20769 Deal Leads</a>
Washington
DC
Here is the behind code:
[Code]....
And here is the webform code:
[Code]....
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Dec 24, 2010
My problem is this source, never render form tag in first row. It works fine. Firefox, Chrome, IE6, IE7 displays fine but IE8 overflows first row. When i set form tag style display:none other rows does not show cart image but first row still shows.
[Code]....
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Sep 30, 2010
i am trying to reer datalist into divs rather than td tr, if u have any tutorial or any refrence than post it here....ur replies would be appriciable.
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Oct 27, 2010
i have code in item databound, but i want to move it to prerender... how do i reference the controls correctly in prerender? in item databound i use e.item....?, what do i use in prerender?:
protected void DataList1_ItemDataBound(object sender, DataListItemEventArgs e)
{
Label Label55 = e.Item.FindControl("Label55") as Label;
Label Label56 = e.Item.FindControl("Label56") as Label;
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Nov 25, 2011
I want to render ASP.Net Table control which has other controls using WebMethod and jQuery AJAX
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Jan 20, 2010
I have 3 columns in a GridView. The first is a templatefield with a button in it and then other 2 are just plain data from the database. Currently when I try to render the HTML from the GridView I see all 3 columns, but I only want to see the plain data fields. I have seen the answer as:gvQuotes.Columns[0].Visible = alse;But that doesn't work for me, because I still want to keep the first templatefield column on my page.
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Feb 23, 2011
I am trying to do some calculation in the page behind .cs like this:
int points = Convert.ToInt32(customer.TotalPoints.ToString()) * Convert.ToInt32(5);
lblBalance.Text = points.ToString();
In the gridview it is like this:
[Code]....
I have Lable with ID "lblBalance" but still I keep on getting error that it does not exists - how to fix this ?
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Mar 31, 2011
I want to click a new record button and my modal pop up pop up and my DetailsView is inside it. The reason I want to do this is so I don't have load it on page load since it will make my page slow, and secondly bcause this detailsview is used for new record and has a lot of validation controls so I have another method for my main GridView on whose select method I pop another DetailsView to edit tht row and that DetailsView has a validation method who won't allow any control on page that isn't validatd. So obviously if I load this new record (this is the 2nd DetailsView) on page load, that other GridView I won't jbe able to edit since that method won't be true since this new record DetailsView boxes will not be validated if they are blank.
So to get around this, I made the modal pop up panel invisible and the new record DetailsView visible=false so it doesn't render on page load but rather on button click. So all I want to do is click newj record button and this pop up panel pops and my DetailsView shows up. Right now it seems to load, but nothing shows. This is what I have:
[Code]....
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Apr 30, 2010
I faced a situation where I have to add a column in the existing GridView. The problem was, that column has to contain <asp:CheckBoxList.../>.
So I used a concept of nested grid (forcing child gridview column to the next row).
I used a <asp:TemplateField...> to achieve this
[Code]....
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Jul 18, 2010
As noted above everything appears fine until update button is clicked. The page refresh is blank - the formview displays no data. What's strange is that when I go back to that page the formview will not display data. The data is in the database, updated as expected. I tried rebinding on postback, nothing. The empty template is displayed.
<asp:FormView
ID="fvMainInfo"
runat="server"
[code]...
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