I have the user control and web page. When I place user control in the web page and in design time, it cannot view and error is "System.Web.UI.UserControl does not have a public property named 'ContentTemplate". It seems not related of error message.
View 5 Repliesi create a composite control as can be seen in code below, and add this control to webform, assign FormView1 to the HeaderControlName property, Run the page, the system will generate parse error message :
Cannot create an object of type 'System.Web.UI.WebControls.FormView' from its string representation 'FormView1' for the 'HeaderControlName' property. However, if i don't assign FormView1 in design screen and manually (through coding) assign FormView1 to the custom control on init, it works as expected.
custom control
public class CmdTest : CompositeControl
{
public virtual FormView HeaderControlName
{
get
{
object oObject = ViewState["HeaderControlName"];
return (oObject == null) ? null : (FormView)oObject;
}
set
{
ViewState["HeaderControlName"] = value;
}
}
protected override void CreateChildControls(
{
Controls.Clear();
Button xx = new Button();
Controls.Add(xx);
}
}
webpage.aspx (assign FormView1 in design time, it will generate error)
<Utils:CmdTest ID="CmdTest1" runat="server" HeaderControlName="FormView1" />
webpage.aspx (didn't assign FormView1 in ASPX, but assign it on Init Code, it works)
<Utils:CmdTest ID="CmdTest1" runat="server" oninit="CmdTest1_Init" />
Webpage.aspx.cs
protected void BsCmdTest1_Init(object sender, EventArgs e)
{
CmdTest1.HeaderControlName = FormView1;
}
I am creating custom control with tabs and also giving design time support for that control. In design time I cant accessing the child controls and also tabs. I want to change the tabs at the desing time.
View 1 RepliesI render some markup dynamically in a Web User Control, can I get that out in design mode, and not only runtime?
public override void RenderControl(HtmlTextWriter writer)
{
if (this.DesignMode)
writer.Write("<p>In design mode</p>");
else
base.RenderControl(writer);
}
... nothing happens when I check the design view of the control. Not if I remove the if (this.DesignMode)-condition either.
None of my user controls display on a web form at design time. At runtime they work fine and at design time to design the user controls themselve is fine.
Is there a setting that is telling the controls not to render at design time?
I have created an advanced label control using web user control to cater some advanced options needed for my application. The control is working fine but there is one hitch bothering me. In normal label control when we change text or color, we can see effects during design time also but this is not functional with web user control. I mean when i change TEXT property of my label inside user control, the effect is visible on runtime not design time.
Is there any way to see effect of property changes during design time??
I have a very strange problem with my website... I created a rather large page, consisting of a few tables with some labels and textboxes where the user can enter a mechanical car setup (it's for a racing game).
I was working with simple textboxes previously, but I recently switched over to a NumericBox control which should allow only numeric input using some client-side javascript. The NumericBox control is simply a UserControl with a single TextBox on it, and some client side events are added to this textbox which call methods from a single javascript file ("Scripts/numericValidator.js")
When I put a couple of these boxes on a page it works just fine, I can only enter numbers. For it to work though I need to add the script to the page and I do that using this line, either in the head content or in the body content controls:
asp Code:
<script src="../../Scripts/numericValidator.js" type="text/javascript" />
(the path is chosen with the 'Pick URL' dialog so it should be alright, and it does indeed need to go up two directories first as the page is in the '~/Pages/RequireLogon" directory) However, after replacing most of the textboxes on my large page with NumericBoxes, and adding this script line to my aspx code, the design view is 'broken'. I cannot see any of my controls anymore, and I cannot even put any new controls on there. It seems like the Content control is missing, even though it's still there just fine without errors in the aspx code.
When I remove the script line, the problem is fixed again, the controls re-appear. So it's definitely the script line causing the problem, but I cannot see how it could...I tried it with a new blank page and the problem appears there too. If I use this simple page with just a button:
[Code]....
[Code]....
in my project the design view is not viewed, but the project is working well and good .. the only issue is i cant see my design view ..
error stated is ""Cannot switch views: Validation (Internet Explorer 6): Element 'Style' cannot be nested within element 'td'.""
I'm new to asp.net and I am picking it up pretty good. What is pissing me off to no end is why an image control will not display in design view when it works just fine on the local asp development server. I am using VS 2005. The image is part of a master page. The only thing that shows is the red x along with some really small green triangle in the top left. Btw what is that geen triangle all about?
[Code]....
I'm developing a set of custom controls, one of them are the "parent", any others must be added inside an ITemplate property of this parent. But in the page, at design time, I can see, by intellisense, the other controls at page level, and I can theorically add them everywhere. I want to emulate the behaviour of the asp:Table and the asp:TableRow, you can't directly add an asp.
View 2 RepliesI am designing an ASP.NET v3.5 custom control based on CompositeControl.
However, I do NOT want to create my child controls via code, but rather as
embedded HTML tag elements within the CompositeControl in the ASPX page, such as:
[code]....
At run time, MyControl.Controls contains the two labels as expected.
At design time, MyControl.Controls is empty.
I need this information at design time for various reasons.
What am I doing wrong?
I'm trying to extend a RequiredFieldValidator in an incredibly basic manner.All I want to do is add a property that is a boolean that can be set at design time through the Properties window of Visual Studio 2008.I can get the control to build and render at design time but as soon as I set the Boolean property the control breaks.There is no trouble at run-time with this control, only design time.Below is the code,the placement in VS and the error message:
1) The Code:
[Code]....
3) This is what the design surface shows after that change is made:
In case the image is missing or broken and to help the search engines, this is what it says:
"An unhandled exception has occurred. 'False' could not be set on property 'ShowValidatorSummaryLink'"
I'm sure I'm missing something or there is a serious bug here.I can't imagine that setting a simple property on the design surface would cause so much trouble.
I installed Rad Controls. Using that controls, I designed my application pages. At design time, the design is not visible. It shows the following error:
RadTabStrip1Failed to create designer 'Telerik.Web.UI.RadTabStrip, Telerik.Web.UI, Version=2010.1.415.35, Culture=neutral, PublicKeyToken=121fae78165ba3d4'
I have use composite custome control its contain button and textbox and gridveiw
but design time gridview is not display .
i created an asp Table in the markup view and insert rows and cells with controls in them.
when i switch to the desing View, i can only choose the whole table,
how can i focus on the controls inside the table rows in the design view (i want to see their properties)?
can't connect to sql 2005 express sp1 and vs is also sp1. 2) Which my guess is because of the database connection not being able... design view is not able to pull in the application for design, it's as if there is no theme and css just white background and black print.
View 1 RepliesI have created a custom user control and place Ajax editor and override the class of ajax editor to disable few buttons in editor ,
i am getting the following error
unknown server tag on the design time, and iat runtime it is working properly,
I've always depended on putting a control on an aspx page and double-clicking in design view to create my VB page. But this isn't happening in my current project. It creates an inline script in my aspx page instead. Where is the option or preference or XML file or.... that controls this?
View 5 RepliesI created an Extender which has a custom property that drills down a list XML elements from an xml file, where users can select xml elements during design-time. This works perfectly fine. However, my code only has a hardcoded xml filename (source of the xml elements list) and I need to change this by maxing the xml file user-specified.
What I did is that I created another control (panel) which has a custom property that when clicked (through the ellipsis), it will allow a developer to select the xml file which is supposed to be the source xml file that the Extenders shall use. The filedialog from custom panel's property works perfectly fine.
However, my problem now is that when I drag-drop my Extender, I cannot find a way to get the property value of the custom Panel Control which contains the xml filename. I tried creating a static variable which I thought the custom controls can share but VS2010 is breaking.
I'm adding a User Control to my aspx page at Run-Time like bellow:
UserControl uc = new UserControl();
uc = LoadControl("UC1.ascx") as UserControl;
PlaceHolder1.Controls.Clear();
PlaceHolder1.Controls.Add(uc);
---------------------------------------------
There is a Button in the User Control its Click event not working. What's the problem?
have a web in which there are different areas i have a 1 admin which manage all things like news, Events, Notices, Logs, Forums, Publications etc.........i want assign user rights that select user view only Noticesselect user view only Logsselect user view only Newsetc....
View 7 RepliesI have RSS Feed which i am calling on .ascx page, my problem when RSS down user control take time till timeout,i dont want to hang my page till time out, i want to run Rss feed some thing like in another thread,so without stoping page my application can start below code
[Code]....
I was referred here by MSDN forums hope this is the right place - I have a custom control (:WebControl) that renders web.sitemap in a specific way. While it runs error free and produces the expected result, at Design-Time it complains
[Code]....
and have tried the SiteMapDataProvider Tag with and without the SiteMapProvider
attribute.Does anybody have (a) any experience with this, or (b) any suggestions as to how to track down the problem?
i m not able to view image assign to the image control at run time. secondly if i assign a new image at run time even that is not visible to me. for example at runtime my coding at button click is
Code:
image1.imageurl="C:Documents and SettingsAll UsersDocumentsMy PicturesSample Pictureswinter.jpg"
i checked and varified the path. but still its not working.
I'm using Visual Studio 2008, and when I select/highlight something in design view and switch to source view it does not highlight and scroll to the selected item. This makes it really hard to change stuff in source view, and it's very inconvenient at worst
View 2 Replies