I have object tag in my page. that object tag I am binding with protected string. my code is below. my aspx page
[Code]....
in my C# page
[Code]....
on the click event of the button 1 i want to find this object tag control and then i wnat some process on that.
I want to change the text of the user name text box which is inside a log in view on selected index chaged event of a drop down list.
this is my code:
[Code]....
but both ddl and tb are null
Anyone knows how can I find the controls in code behind?
i have 2 stringbuilder object. now i want to compare these 2 objects and have to find what is the different word from object to object2. how to do this?
View 1 RepliesI have a Windows 2003 test server hosting an asp.net 2.0 application and Sql Server 2005 running as Sql Server 2000(80).During a recent a security review we decided that it wasn't such a hot idea to use sql authentication with an sysadm user as the database user for the asp.net application. Having done a bit of reading (http://msdn.microsoft.com/en-us/library/ms998258.aspx#pagguidelines0001_dataaccess) I decided to use a lower privilege database user account and windows authentication.Starting from scratch I created a new custom service account (http://msdn.microsoft.com/en-us/library/ms998297.aspx) and assigned this to the process identity for the application pool.I then created a new database login and user for this account. I added the db_datareader and db_datawriter roles to this user and I also granted EXECUTE permissions for user defined stored procedure and functions. However when I started the application I got this error 'User does not have permission to perform this action.Cannot find the object 'AspNet_SqlCachePollingStoredProcedure', because it does not exist or you do not have permission.' - after a quick hunt I found thishttp://forums.asp.net/p/1487216/3493362.aspx and followed the advice herehttp://msdn.microsoft.com/en-us/library/system.web.caching.sqlcachedependencyadmin.aspx and granted the user CREATE TABLE and CREATE PROCEDURE permissions.Still no joy - after digging around and looking at sql profiler I found what I believe to be the offending piece of sql:
/* Create notification table */
...sql
/* Create polling SP */
..more sql
..finally
GRANT EXECUTE ON dbo.AspNet_SqlCachePollingStoredProcedure to aspnet_ChangeNotification_ReceiveNotificationsOnlyAccess
My understanding is that to issue 'GRANT EXECUTE' the user must db_owner or db_secadmin. Indeed it all works fine if I give the service account user login the db_owner role.This sql is caused by: SqlCacheDependencyAdmin.EnableNotifications(ConnectionString), this is called once and once only by the application start event.Is there a work around for this? I would like to use the lower privilege account as per best practice but this issue is making it tricky.
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.
Description:
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:
[Code]....
Line 233:Line 234: Repeater1.DataSource = PagedResultsLine 235: Repeater1.DataBind()Line 236: doPaging()Line 237: End Sub
In the same Code behind file I have:
// This works
Label lblTopNavBarInfo = (Label)Master.FindControl("lblTopNavBarInfo");
lblTopNavBarInfo.Text = "Currently Serving: + FirstName + " " + LastName ;
// This compiles but throws an error in the browser
LinkButton lnkBtnProductsOwned = (LinkButton)LeftNav_CustServ1.FindControl("ProductsOwned"); // The Control is visible
lnkBtnProductsOwned.Enabled = false; // Error: Object reference not set to an instance of an object.
Usage :
[code]...
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:
I am getting the following error in an Asp.Net Castle ActiveRecord app when trying to update an object:
"a different object with the same identifier value was already associated with the session"
I've looked up and down my code to see where else the object might have been created but I'm not seeing it. This is baffling as I have the exact same code on another page that works fine on updates
Now I'm thinking of trying to see where this other object is in the Session and either kill it or find out how it got into the session. How can I find this object?
[Update]
Ok, I finally found where the object is being called. However, I would still like to know how to find objects in the session for future reference.
As I iterate through a DataTable object, I need to check each of its DataRow objects against the items in a generic string List. I found a blog post using the List's Find method along with a delegate, but whereas that example has a separate class (Person), I'm attempting something like the following using an instance of the string object:
// My definition of the List object.
List<string> lstAccountNumbers = new List<string>();
...
// I populate the List via its Add method.
...
foreach (DataRow drCurrentRow in dtMyDataTable.Rows)
{
if (lstAccounts.Find(delegate(string sAccountNumber) { return sAccountNumber == drCurrentRow["AccountNumber"]; })
{
Found_DoSomething();
}
else
{
NotFound_DoSomethingElse();
}
}
However, with this syntax I'm receiving "Cannot implicitly convert type 'string' to 'bool'" for the if block. what I'm doing wrong and how best to accomplish what I'm trying to do?
using the ajaxControlToolkit requires the ToolkitScriptManager, but then i get the message: "only one scriptmanager..." the problem is, i cant find any other scriptmanager in the whole solution, so it should be somewhere in the parent pages. how can i find/get/replace this scriptmanager-object?
View 3 RepliesHow can i find what are the URL's opened in the browser window and how can i get that page as a page object as described below.
Eg:
The opened url ='http:\localhostIPTrackingIndex.aspx'
We can fetch the page by giving the below code
page=(page)HttpContext.Current.CurrentHandler.
How can we do it for all the opened URL's because if we give the HttpContext.Current.CurrentHandler then it will display the page object within the site but i want the page object from other sites also.
I'm writing messages to a Message Queue in C# as follows:
ObjectMsg objMsg = new ObjMsg(1,"ascii",20090807);
Message m = new Message();
m.Formatter = new BinaryMessageFormatter();
m.body = objMsg;
queue.Send(m);
and I'm trying to read the messages as follows:
Message m = new Message()
m.Formatter = new BinaryMessageFormatter();
MessageQueue mq = new MessageQueue("./pqueue");
m = mq.Recieve();
ObjMsg msg = (ObjMsg )m.Body;
However I'm getting an error message which says: "Cannot find a formatter capable of reading this message."
[Code]....
I am getting error of in Foreach loop
[Code]....
How to resolve this situation or any other alternative to cum out of this problem.
_objbefor = Convertor.XmlDesrialize.XmlDesrializer.DesrializeAnyObject(_XmlObjBefor, _ObjectType);
_objAfter = Convertor.XmlDesrialize.XmlDesrializer.DesrializeAnyObject(_XmlObjAfter, _ObjectType);
//exteract properties of loged object
PropertyInfo[] _PropertyInfo = _ObjectType.GetProperties();
List<string> _ObjBeforTostring = new List<string>();
//_ObjBeforTostring.Add("");
_ObjBeforTostring.Add("*************Befor Object**********");
_ObjBeforTostring.Add("");
foreach (PropertyInfo pf in _PropertyInfo)
{
if (_objbefor != null)
{
string _str = pf.GetValue(_objbefor, null).ToString();
_ObjBeforTostring.Add(pf.Name.ToString() + " :: ( " + _str + " )");
_ObjBeforTostring.Add("==============================");
}
}
_ObjBeforTostring.Add("");
_ObjBeforTostring.Add("*************After Object**********");
_ObjBeforTostring.Add("");
foreach (PropertyInfo pf in _PropertyInfo)
{
if (_objAfter != null)
{
string _str = pf.GetValue(_objAfter, null).ToString();
_ObjBeforTostring.Add(pf.Name.ToString() + " :: ( " + _str+" )");
_ObjBeforTostring.Add("==============================");
}
}
i have problem in using ajax control , till morning it everything was file , now when i add any new ajax control it shows the error Control canot be created because visual studio cannot find the control's type in the control assembly then if i press OK it says The operation could not be completed . invalid FORMATETC structure
View 5 RepliesI have an object on my asp.net page hosting a Silverlight xap (in my particular case it is in an IFrame, but I'm curious about regular objects as well). I can find the element in UI Spy, but the name just says "Silverlight Control". Trying to find that AutomationElement in my automated test is unsuccessful (control is null every time). Is there a setting in the Silverlight code or in the html that would help? How can I distinguish it if there are multiple Silverlight controls on the same page?
<object id="silverlightClient" style="display:none;" data="data:application/x-silverlight-2," type="application/x-silverlight-2">
<param name="source" value="../../ClientBin/SilverlightApplication.xap"/>
<param name="onerror" value="onSilverlightError" />
<param name="background" value="#00000000" />
<param name="minRuntimeVersion" value="4.0.41019.0" />
<param name="autoUpgrade" value="true" />
<param name="windowless" value="false" />
</object>
TreeWalker tw = new TreeWalker(new System.Windows.Automation.PropertyCondition(AutomationElement.NameProperty, "Silverlight Control));
AutomationElement control = tw.GetFirstChild(ancestor);
UI Spy
Identification
ClassName: "MicrosoftSilverlight"
ControlType: "ControlType.Window"
Culture: "(null)"
AutomationId: "71857844"
LocalizedControlType: "window"
Name: "Silverlight Control"
ProcessId: "7636 (iexplore)"
RuntimeId: "42 2163886"
IsPassword: "False"
IsControlElement: "True"
IsContentElement: "True"
EDIT: added image, I also realized that the object is inside of an IFrame. UISpyImage - title name removed
I'm looking for a way to parse excel into Asp.Net, the problem I'm experiencing same as in[ URL]
I've searched all web, but no1 seems to have an answer
here's the error
The Microsoft Jet database engine could not find the object 'Cities'. Make sure the object exists and that you spell its name and the path name correctly.
the code is the exact same as in [URL]
I have a gridview with a nested placeholder in each rows. I nested some checkboxes in each placeholders in each rows dynamically, so their ServerIDs are not the same (I dont want to use nested gridview). at the end in a button event I want to count checked checkboxes in gridview while I can not use findcontrol() method in each rows to find checkboxes due to their different ServerIDs.
View 3 RepliesI got this error "object reference not set to an instance of an object" when i want to display the values of dynamic generated drop down lists by pressing a button to show the values in Listitem.
i have master page in which i use :
1)ScriptManger
2)UpdatePanel
3) treeview menu
Server side Code is:
[code]
I'm working on ASP.NET app and in the master page C# code I want to access the login control, so I have the following code:
Login login = new Login();
login = this.Master.FindControl("login") as Login;
But, I get exception "Object reference not set to an instance of an object" when this line
login = this.Master.FindControl("login") as Login;
is executed. I can't see what can be wrong...
I'm trying to find a TextBox in the code-behind page, it's inside a nested master page and also then inside another control container (it's inside ctrlCheckoutShippingAddress also) .
I've tried this:
[Code]....
[Code]....
how to find Textbox Control inside DetailsView Control Using Javascript, I tried below but gives an error OBject reference not found
document.getElementById('<%=DetailsView1.FindControl("TextBox1").ClientID%>');
<asp:Content ID="Content3" runat="server" contentplaceholderid="ContentPlaceHolder3">
<asp:LoginView ID="LoginView1" runat="server">
<AnonymousTemplate>
<asp:Login ID="Login1" runat="server" BackColor="#FFFBD6" BorderColor="#FFDFAD"
BorderPadding="4" BorderStyle="Solid" BorderWidth="1px" Font-Names="Verdana"
Font-Size="0.8em" ForeColor="#333333" onauthenticate="Login1_Authenticate1"
[code].....
i have used an login control for the users who have not logged in and defined login verification method on the click event of the button but while excuting i do get an error
Error 1 The name 'Login1' does not exist in the current context
i have a gridview control i added checkbox contrl dynamically but i am not getiing the reference of checkbox in button clilck event here is my code Gridvew
[Code]....
.vb code
[Code]....
I have on dropdown that show hide user control. In the user control i have Ok and Cancel button.
When the dropdown change i want to apply ValidationGroup on the Ok button that is inside UserControl.