Web Forms :: Get Classid In Object Tag For Windows User Control?

Sep 23, 2010

<object id="s"
classid="http:WindowsControlLibrary1.dll#WindowsControlLibrary1.axUserControl11" height="300" width="300" VIEWASTEXT> </object>

this is the code what i am using but after running the app nothing is getting displayed

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Web Forms :: When Running The Above Asp.net Gives An Error Saying An Object Tag Must Contain A Class, ClassID Or ProgID Attribute?

Mar 2, 2010

I have the following code:

<object runat="server" id="test1" type="application/x-shockwave-flash" width="2000" height="1000">
<param name="movie" value="Finance/Averdaf.swf" />
<param name="quality" value="high" />

when running the above asp.net gives an error saying An object tag must contain a Class, ClassID or ProgID attribute. What can I do about this? I need to access the object from code behind because I might change the value path to something else at runtime.

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Web Forms :: Assign User Control From Another User Control ? Giving Error Object Reference Is Not Set An Instance?

Feb 17, 2011

I am trying to assign user control from another user control ..first time its binding control successfully but when we refresh the data its giving error

saying "Object reference is not set an instance".

how to refresh data from another user control ...

My senerio below :

1 Aspx page

2. User control

calling usercontrol databinding method from aspx page but once it get refreshed ,not allowed to bind it again..

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C# - Web User Control With Content Inside It / Object Reference Not Set To An Instance Of An Object

Aug 11, 2010

Usage :


The problem is it gives me following error :

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

Line 21: {
Line 22: base.OnInit(e);
Line 23: _ContentTemplate.InstantiateIn(BodyControlSpace);
Line 24: }
Line 25:

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Forms Data Controls :: Using GridView With A User Control And Passing Object Into Control?

Jan 8, 2010

I would like to use the gridview paging feature and have built a gridview with a user control. The data source has lots of columns, so to make it easier I want to return a LIST<MyObject> and just pass <Myobject> into the user control rather than all the data elements. Not sure how I access the object of the data source to bind to the control. Assume it would be during ondatarowbound.

Also, my guess is there is a better way to do this than gridview. I'd take either solution that allows me to have easy paging and pass the complete object into the user control

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Web Forms :: Using Windows User Control In Web Application?

Sep 28, 2010

i have created one windows user control in vb.net and i am consuming this in web application i already added windows user control dll to my web application and i used object tag for adding user control in web application. but i am not getting any output only blank image with small x on the top of the page

and the code i used in web application is

<object id="WindowsControlLibrary11" classid="http:WindowsControlLibrary11.dll#WindowsControlLibrary11.UserControl1"
height="500" width="500" >

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Web Forms :: Adding Windows User Control In Asp Application

Sep 22, 2010

i had created one user control in c# and i want to add this user control in asp.net application.

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Have The Windows User Control, Need To Convert This User Control In Web User Control?

Jul 16, 2010

I want to convert windows user control into web user control..I have the usrDataView.cs..I need to convert this file into usrdataview.ascx.can anyonr help me?...how I can convert the file...Is any method is available..

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Web Forms :: Display Windows Form User Control In Aspx Page?

Jun 10, 2010

I have the windows form user control with the name usercontrol.cs .. I want to display this usercontrol.cs in aspx page..I tried the below code..but it produced error.. how to resolve my proplem...thx

Control MyUserControl;
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Web Forms :: Object Reference Not Set To An Instance In User Control

Jul 15, 2010

i am trying to enter a value into a texbox that is placed inside a user control called CollectionRequest. i have referenced this user control in my code behind and created an instance of it but i seem to get the above error when i try to enter some manual text. code as follows:

protected CollectionRequest collReq;
protected void Page_Load( object sender, EventArgs e )
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TextBox _txt_address = (TextBox)collReq.FindControl("txt_Address");
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control has been referenced in source file
<%@ Reference Control="~/CollectionRequest.ascx"%>

i am caling this code in my Approval.ascx.cs code. both the user controls are displayed together in the default.aspx page one above the other.

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Web Forms :: Share Object Between Page And User Control?

Dec 21, 2010

I have a page on which I placed a user control. In this page I create an object ("FilterState") that maintains some state information. There are controls on the page which alter and read the FilterState, and the user control needs to be able to alter and read this same instance of FilterState. Meaning that there is code inside the user control that needs to refer to this object and manipulate it.I'm stuck on how to share the same instance between the page controls and this user control.

If I declare a FilterState object as a property of my user control, and set this property value to the instance I created in the page code behind, I'm assuming that it's really just getting a copy of it.

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Forms Data Controls :: Passing A Whole Object Through To The User Control Inside A Repeater?

Apr 16, 2010

I have a user control inside a repeater. I am binding a collection of objects to the repeater.

My user control has a public property to retrieve the object (setobject)

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Forms Data Controls :: Pass Parameter To Object Datasource In User Control?

Jun 30, 2010

I have a gridview inside a user control bind to an object datasource. Now I want to bind the object datasource with a parameter from parent page.

For this purpose I defined a public property in user control but how do I pass it with object datasource ?

I am calling from parent page like


How to bind object datasource with my parameter ?

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Integrating Windows User Control In Web Application?

Jul 2, 2010

I have a windows user control in windows control library...I add these user control in web application using below steps.

1.copy the windows control library project's dll file into web application project.

2.In aspx page I have the below code


I can get the proper output..but the styles not same as user control...styles not displayed properly..I need the same design of the user control in web application

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Windows User Control Inside Webform Required .NET Framework?

May 20, 2010

If I develop a Windows User Control and host it inside an aspx web form, does the user's machine accessing the aspx page needs .NET Framework?

Does the Windows User Control hosted inside an aspx or web form requires any downloading of the control similar to an ActiveX control? Or Is it rendered like a HTML page?

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How To Access Php Javascript Object In Asp.net User Control

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I have a website in php which is using 4 frames(top, left, middle and right). The middle frame contains the web user control coded in asp.net. Now, in the right frame( which is coded in php ) some javascript contains the id of the items selected in right frame. I need to get those ids to the middle frame on asp.net user control.

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AJAX :: Hosting Windows User Control In A Webpage Inside An Update Panel

Jun 8, 2010

I am hosting a Windows User Control in my web page using <object> tag. Everything works fine when the control is outside the updatepanel and is independent of other web controls but when I move the control inside the update panel, it doen't load the user control properly.

<object id="myBrowser" classid="http:MyBrowser.dll#MyBrowser.UserControl1" height="20" width="400" VIEWASTEXT></object>

why it doesn't render the control properly and what can I do to fix it?

I tried moving the user control outside the update panel but since this user control is shown/hidden dynamically and is rendered based on other web controls which are inside an Update Panel, the user control is not shown at all.

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How To Use A Viewstate'd Object As A Datasource For Controls On User Control

Dec 29, 2010

I've got a listview on a control. Each row comprises a checkbox and another listview.

The outer listview is bound to a property on the control (via a method call, can't set a property as a SelectMethod on an ObjectDataSource it would appear) which is lazy loaded suchly:


The reason for the use of viewstate is this:

When an one of the checkboxes on one of the outer list view rows is checked or unchecked I want to modify the object that the ODS represents (for example I'll add a couple of Charge objects to the relevant Product object) and then rebind.

The problem I'm getting is that after every postback (specifically after checking or unchecking one of the rows' checkbox) my viewstate is empty. Thiss means that any changes I make to my viewstate'd object is lost.

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Installation :: Uninstall .net Windows Application From Different Windows User

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Forms Data Controls :: Object Reference Not Set To An Instance Of An Object Repeater Control

Apr 21, 2010

can you please help me to brainstorm the possible causes of this error. I've got a paged repeater with localisation bound programitcally to an sqldatasource using a stored proc. I can post code if needs be but it's rather long. I'm looking for typical causes of this error + will make note for future reference!

erver Error in '/WebSite4' Application.

Object reference not set to an instance of an object.
An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:


Line 233:Line 234: Repeater1.DataSource = PagedResultsLine 235: Repeater1.DataBind()Line 236: doPaging()Line 237: End Sub

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Web Forms :: Accessing Control In Usercontrol / Error: Object Reference Not Set To An Instance Of An Object

Apr 19, 2010

In the same Code behind file I have:

// This works

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Forms Data Controls :: Object Reference Not Set To An Instance Of An Object In Nested Repeater Control Of CheckBox List ...

Sep 24, 2010


I am getting error of in Foreach loop


How to resolve this situation or any other alternative to cum out of this problem.

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Web Forms :: Change User To Windows User

Nov 4, 2010

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Page.User.Identity.IsAuthenticated Returns Object Reference Not Set To Instance Of Object?

Dec 23, 2010

this works fine on my local site but as soon as i upload the site to my live server i get stem.NullReferenceException: Object reference not set to an instance of an object

on the first line of this:

if (!Page.User.Identity.IsAuthenticated)
pnlSignIn.Visible = true;
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