I need from a ascx (control_A) load dynamically another user control (Control_B), for do that I use LoadControl passing parameters to the control_B's constructor, in this way:
View 7 RepliesI have create user wizard control and i put validation control for all field but when i close user control that validators dint clear in firefox or but clear in IE
View 3 RepliesHere is what I am trying to do. I have a page with two link buttons and an updatepanel (the two linkbuttons trigger the updatepanel). I have two usercontrols which have labels with same ID's. When I click the first link button, I add the first usercontrol to the updatepanel and set the label value to datetime.now
if i click the second link button i see that the value of the label from the first control is set in the label in second user control. if the id's are different there is no problem - but in my case the usercontrols are being developed by different teams and I am integrating them in the way i mentioned - so they may have same ids.
I created a user control, then use LoadControl to call the user control in a web form. Everything is working fine on my computer. When my work is copied to another developer's computer, the content of the user control does not show. All other pages are working fine.
The only difference I could think of between my computer and another computer is the other computer use ajax-created master page. But this web form that calls the user control does not use any master page.
I am making multiple calls to ObjectContext.ExecuteStoreCommand with different commands and different parameters, although I use the same parameter list (object) for a several of the commands. I am getting the following exception:
System.ArgumentException: The SqlParameter is already contained by another SqlParameterCollection.
Is there a way to clear parameters between calls as I would do with straight up ADO.NET?
Updated with a code sample:
string sqlDeleteWebUserGreen = "delete WebUserGreen where WebUserId = @WebUserId";
string sqlDeleteWebUserBlue = "delete WebUserBlue where WebUserId = @WebUserId";
var argsDeleteWebUserXref = new DbParameter[] {
new SqlParameter { ParameterName = "WebUserId", Value = user.WebUserId }
rowsAffectedDeleteWebUserXref += base.context.ExecuteStoreCommand(sqlDeleteWebUserGreen, argsDeleteWebUserXref);
rowsAffectedDeleteWebUserXref += base.context.ExecuteStoreCommand(sqlDeleteWebUserBlue, argsDeleteWebUserXref);
UPDATE
Basically I am unable to find any better way of doing this, so I ended up accepting the answer below. The only difference is that I simply put the creation of the parameter into a separate method, so my calls look like base.context.ExecuteStoreCommand(sqlDeleteWebUserBlue, MethodThatWillGiveMeTheParameterArray());
I have a dynamically created user control which is accomplished usingLoadControl().
When I debug, the LoadControl call is called once, however the Page_Load inside the user control is called twice. On each occasion, the postback property is false, so it seems somehow the Page_Load event is called outright 2 times and nothing to do with any postback?
I have a page that deploys a user control to display an article. The page will show a different article depending on the ID parameter fed in via querystring, and there are many thousands of articles in our db. Here is the problem: I need to cache the user control to improve performance. But editors constantly need to go in and make changes/corrections, which they want to appear instantly on the site. Is it possible to clear the cache for a specific article only once it has been edited? ie for the request article.aspx?id=123? If so how would I do this? Otherwise, if the cache is cleared for all our content every time a single piece of content is edited, it will defeat the object of caching in the first place. I have tried using a cache key as recommended here: [URL] However, this apporach suffers from the drawback mentioned above. have also seen that you can set caching up to be cleared by changes to the db. However, the particular table concerned holds content for a number of other sites and would also have the same disadvantage.
View 5 RepliesI've read that you should write repeaterControl.DataSource = null to clear the items in the control, but it doesn't work. Does anyone have any tips or links to articles about this problem?
View 2 RepliesI am running into a weird issue. Please follow the comments in the attached code, along with the code.
Basically - I am trying to let a dynamic control class decide on what its javascripts are and what it wants to send to the browser.
But for some reason, this is not working - the javascript is not getting written to the browser page after the post back, even though I see the dynamic control on the browser page.
Here is the code snippet:
[Code]....
<% @
Register
src="myControl2.ascx"
tagname="myControl2"
tagprefix="uc4" %>
Page_Load(object sender,
EventArgs e)
{
myControl2 mc = new myControl2();
//is there anything wrong with the preceding way? Why ever use LoadControl?
Control myLC = LoadControl("myControl2.ascx");
//Why ever do it the LoadControl way?
}
I'm trying to make a decision about how to display my data. What I have now is a list of products displayed in a repeater. But for code-maintenance I've put my product items in a seperate usercontrol and loading them in a loop with db results using LoadControl.The product control itself is very simple, just a few public properties like title, url, rating but I'm not sure if this will affect my performance. I did some reading here and on forums and some people say it's not the best practice especially if you have more then 20 or 30 of these controls. So, is it really a performance hit using this method or does it stay ok with around 10.000 hits a day.
View 2 RepliesI have a usercontrol that I load dynamically:
Code:
Sub PageLoadEvent()
Dim ctlIntrotext As Control = LoadControl("tryktabKapacitet.ascx")
plh1.Controls.Add(ctlIntrotext)
End Sub
and then adds the sub to the Page_load, that works fine.However:
1) How do I call subs from the usercontrol?
2) How do I add the OnClick-events which I normally have in the webform source, see example...
Code:
<uc9:TryktabKapacitet ID="TryktabKapacitet1" OnBtnNulstilClick="TryktabKapacitet1_BtnNulstilClick" OnSetAllModulesK="TryktabOptimering1_SetAllModules"
OnSetOneModuleK="TryktabOptimering1_SetOneModule"
OnBtnClick="TryktabOptimering1_BtnClick" runat="server"></uc9:TryktabKapacitet>
Is it possible to LoadControl in windows application? I have email generation as web, but I want to move it to windows service for monthly newsletter.
Emails now are implemented as UserControls, in this way html person can easily modify look & feel.
Current rendering implementation looks like:
StringBuilder sb = new StringBuilder(4000);
StringWriter sw = new StringWriter(sb);
HtmlTextWriter htw = new HtmlTextWriter(sw);
Page page = new Page();
EmailTemplateBase emailCtrl = (EmailTemplateBase)page.LoadControl(
"Controls/EmailTempaltes/Template.ascx");
// Exception here
emailCtrl.DataContext = dataContext;
emailCtrl.Parameter = parameter;
emailCtrl.RenderMode = renderMode;
emailCtrl.DataBind();
emailCtrl.RenderControl(htw);
subject = emailCtrl.Subject;
string MessageText = sb.ToString().Replace(" ", "").Replace(Environment.NewLine, "");
return MessageText;
I'm developing a stand-alone ASP .NET component for dropping in to various sites we create.
Part of the application is a CompositeControl, which needs to load a UserControl.
However, CompositeControl has no LoadControl() method - in stead, I must (as far as I can see?) rely on Page.LoadControl() and this is a problem! How do I know the path to my control, when the page is not part of the assembly?
The page the CompositeControl is situated on resides outside the assembly I am writing the Page.LoadControl() code in, and thus cannot find my .ascx file.
I've tried LoadControl(type, object[]) but this doesn't load the "code infront" file, which I need.
So - how do I find the Path to some .ascx file inside some included assembly (name known, ofc) for my Page.LoadControl? Or, alternatively, is there some other way to load the control from inside the CompositeControl?
I'm using aspxgridview and after adding operation by using RowInserting event and I don't use the
gridView.CancelEdit();
becuase I need the addform still apperaing to insert another row.
My problem is : how can I clean the data from the control in the addform until I can insert the new data for the second row ??
I have a requirement, where-in once a file is upoaded using the AsyncFileUpload control, I want the name of the uploaded file to be removed from the AsyncFileUpload control and it should show blank (as it was when the page was first loaded). Also, the control should allow uploading the same file immediately after the first upload is complete(assuming that the user deciedes to update the file after the first upload and wants to immediately upload the updated version of the file).
View 15 RepliesIs it possible to dynamically (and generically) clear the state of all of a user control's child controls? (e.g., all of its TextBoxes, DropDrownLists, RadioButtons, DataGrids, Repeaters, etc -- basically anything that has ViewState)
I'm trying to avoid doing something like this:
foreach (Control c in myUserControl.Controls)
{
if (c is TextBox)
{
TextBox tb = (TextBox)c;
[Code]....
...but obviously that doesn't exist. Is there any easy way to accomplish this dynamically/generically?
In the past I've used UserControls to create email templates which I can fill properties on and then use LoadControl and then RenderControl to get the html for which to use for the body text of my email. This was within asp.net webforms.
I'm in the throws of building an mvc website and wanted to do something similar. I've actually considered putting this functionality in a seperate class library and am looking into how I can do this so that in my web layer I can just call EmailTemplate.SubscriptionEmail() which will then generate the html from my template with properties in relevant places (obviously there needs to be parameters for email address etc in there).
I wanted to create a single Render control method for which I can pass a string to the path of the UserControl which is my template. I've come across this on the web that kind of suits my needs:
[code]....
Does that make sense? I was just wondering if this is at all possible in the first place and how I'd implement it? I'm not sure if it would be possible to map the properties set on 'object' to properties on the loaded user control and if it is possible where to start in doing this?
We use Page.ParseControl to interpret a string of XML into controls. Does it use some kind of caching mechanism? If not - is there a way to cache its result?
Page.LoadControl seems to support some sort of caching.
I may be putting this wrong. I have an ASP.NET web page which has a GridView, a CheckBoxList and some buttons and textboxes on it. The CheckBoxList and the GridView get their data from an SQLDataSource.
I would like to turn this Web Page into a User Control (which I think I know how to do with the MSDN information). How would I set up this User Control to use the SQLDataSource from the Web Page it is placed upon?
How to clear the selected date of a Calendar control using JavaScript. Also, while doing this, how can I prevent page refreshing?
View 1 RepliesI would like to pass a number of parameters via a button, (it must be a button) but I don't know how to do this.
View 2 RepliesI am using CreateUserWizard control on my admin page.After successfully creating a user with the control, it displays "Complete Your account has been successfully created."After clicking on continue button it sets the ActiveStepIndex Correctly.The problem is, while it sets the ActiveStepIndex correctly, it retains the old user account credentials.
View 8 RepliesI have a need to add my page controls dynamically in code behind.
I do well, adding a dropdownlist, a SQL datasource to populate it, setting it to autopostback=true, and adding a gridview and its SQL datasource.
What I'm unsure about is how to programmatically refer to the SelectParameter, being a control (the DropDownList), and its selected item.
What is difference between Session.Clear() vs. Session.Contents.Clear()?
I want to clear all the Session variables.