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Hi all,
An error occurs when i use SqlConnection object to connect to Sql Server
Here is the stack trace:
at LoadLibraryW(UInt16* )
at System.EnterpriseServices.Thunk.Security.Init()
at System.EnterpriseServices.Thunk.Security.SuspendImpersonation()
at System.EnterpriseServices.Platform.Initialize()
at System.EnterpriseServices.ResourcePool..ctor(TransactionEndDelegate cb) at System.Data.SqlClient.ConnectionPool..ctor(DefaultPoolControl ctrl)\n at System.Data.SqlClient.PoolManager.FindOrCreatePool(DefaultPoolControl ctrl, IntPtr SID)
at System.Data.SqlClient.SqlConnectionPoolManager.GetPooledConnection(SqlConnectionString options, Boolean& isInTransaction)
at System.Data.SqlClient.SqlConnection.Open()
I actual can't understand and don't know how to resolve the problem
Thanks
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Have a look at this link[^]
From MSDN
The problem was generated by Kaspersky Antivirus 6.0.2.621; even if it was disabled or closed, the exception still occured.
Now I'm using Kaspersky Antivirus 6.0.1.411 and all works fine.
Weird, and someone actually found a solution to it.
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Hi all,
I'm having problems trying to move a file from my IIS server to a unc share on the same domain. I know it all boils down to a permission issue (the bane of my existence). I'm running IIS 5.0 (in production) and 5.1 (in test). I have impersonate set to true in web.config. Most everything else is pretty much default including the ASPNET account running the worker process. I know I have read/write permission in the share. I've even gone as far as to slip an WindowsImpersonationContext around the move code only to get the same Access denied error. I found this article[^] about Kerberos delegation which sounds like it could work but I wouldn't be able to give delegation rights to. Do I need to run the worker process under a domain account instead of the local ASPNET account? Has anybody else have this kind of issue?
Keith
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Ok, so the moral of this story, use a domain account to run your asp.net process when you need to access network resources on the same domain. Well, that's the moral I used anyway. If anybody has other solutions to this, I'd like to hear them too. Here's an article for asp.net 1.1 which I took bits and pieces of to get the solution working http://msdn2.microsoft.com/en-us/library/aa302396.aspx[^]
Keith
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hai dears,
i got an error while running from web deployment project,
that "cannot create activeX component" for excel.application..
But the same works perfectly while running from the code..
do have any solution ?
dhanis
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Hi,
I have a web reference in my code that allows me to access a web service. I want to make sure that I'm accessing the right web service by checking the URL that's stored under the web reference.
For example if I'm accessing the web service from server X rather than server Y, I can just refer to the URL but can I get hold of this value somehow?
Thanks 
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Hi,
I'm trying to construct a datagrid dynamicly by reading properties from an Xml File.
so i've defined a template column so they fit the type of controls defined in the xml.
this is code wish define the template column
public class GenericItem : ITemplate
{
private readonly string column;
//private bool validate;
public GenericItem(string column)
{
this.column = column;
}
public void InstantiateIn(Control container)
{
Literal l = new Literal();
l.DataBinding += new EventHandler(this.BindData);
container.Controls.Add(l);
}
public void BindData(object sender, EventArgs e)
{
Literal l = (Literal)sender;
DataGridItem container = (DataGridItem)l.NamingContainer;
l.Text = ((DataRowView)container.DataItem)[column].ToString();
}
}
public class ValidateEditItem : ITemplate
{
private readonly string column;
public ValidateEditItem(string column)
{
this.column = column;
}
public void InstantiateIn(Control container)
{
TextBox tb = new TextBox();
tb.DataBinding += new EventHandler(this.BindData);
container.Controls.Add(tb);
tb.ID = column;
RequiredFieldValidator rfv = new RequiredFieldValidator();
rfv.Text = "please write!";
rfv.ControlToValidate = tb.ID;
rfv.Display = ValidatorDisplay.Dynamic;
rfv.ID = "validate" + tb.ID;
container.Controls.Add(rfv);
}
public void BindData(object sender, EventArgs e)
{
TextBox tb = (TextBox)sender;
DataGridItem container = (DataGridItem)tb.NamingContainer;
tb.Text = ((DataRowView)container.DataItem)[column].ToString();
}
}
public TemplateColumn DynamicColumns(string column, bool isEditable)
{
TemplateColumn genericcolumn = new TemplateColumn();
genericcolumn.HeaderText = column;
genericcolumn.ItemTemplate = new GenericItem(column);
if (isEditable)
{
genericcolumn.EditItemTemplate = new ValidateEditItem(column);
}
return genericcolumn;
}
and the way i contruct column is
if (Type != null)
{
//case of primary key
BoundColumn ColPk = new BoundColumn();
ColPk.DataField = c.ColumnName;
ColPk.SortExpression = c.ColumnName;
ColPk.ReadOnly = true;
Grid.Columns.Add(ColPk);
}else
{
//case of other column
TemplateColumn col;
col = DynamicColumns(c.ColumnName, true);
col.SortExpression = c.ColumnName;
Grid.Columns.Add(col);
}
so that I'm sure to make the primary Key not editable;
but the problem is how to retreive the primary key from datagrid
while it's in readOnly and I've want the value of this key to make Update
I've tried with two method
public void GridUpdate(Object sender, DataGridCommandEventArgs e)
{
//the first way
e.Item.FindControl("key").Text ;->it returns null ;
//the second way
grid.DataKeys[e.Item.ItemIndex];->the grid.Datakeys isempty
}
So I can't contruct the UpdateQuery
thank in advance for help
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I do initialize some controls on Page_Load.
Sub Page_Load(ByVal Sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
SQLconn.Open()
Dim SelectCmd1 As New SqlCommand("SP1", SQLconn)
SelectCmd1.CommandType = CommandType.StoredProcedure
Dim result1 As Integer
Dim myDataReader1 As SqlDataReader
myDataReader1 = SelectCmd1.ExecuteReader()
myDataReader1.Read()
result1 = myDataReader1.GetInt32(0)
SQLconn.Close()
ChangeButton(result1)
End Sub
Sub ChangeButton(ByVal Status As Integer)
If Status = -1 Then
Label1.Text = "ON"
OnOff1.Style.Value = "background-image: url(../ImgContr/1.png);"
Else
Label1.Text = "OFF"
OnOff1.Style.Value = "background-image: url(../ImgContr/2.png);"
End If
End Sub
I moved the code from Page_Load to MyRefresh bc I want to call this code fom other events too:
Sub Page_Load()
If Not Page.IsPostBack Then
MyRefresh()
End If
End Sub
Sub MyRefresh()
SQLconn.Open()
Dim SelectCmd1 As New SqlCommand("SP1", SQLconn)
SelectCmd1.CommandType = CommandType.StoredProcedure
Dim result1 As Integer
Dim myDataReader1 As SqlDataReader
myDataReader1 = SelectCmd1.ExecuteReader()
myDataReader1.Read()
result1 = myDataReader1.GetInt32(0)
SQLconn.Close()
ChangeButton(result1)
End Sub
I don't get any errors but the controls get no values from the database. Something is missing but I don't know what.
Thanks
-- modified at 10:05 Friday 15th June, 2007
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Have you tried debuging the code? What is the value that you are passing into the changebutton method? when you call the stored procedure manually do you get what you are expecting?
I would guess that your call to the stored procedure is not returning what you are expecting. Try debugging the code and see if that helps you figure it out.
Ben
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I'm absolutely sure that the SP is correct bc when I have the content of the content of MyRefresh() in the Page_Load it works without any problems.
But when I moved the code to MyRefresh() and call it from Page_Load it doesn't work
Sub Page_Load()
If Not Page.IsPostBack Then
Refresh()
End If
End Sub
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Well, based on the code you posted the only difference I can see is in the new code you are checking If Not Page.IsPostback
This seems like the correct thing to do, but it doesn't seem you did that when you weren't using the MyRefresh() method. So I guess you could try removing that and see if it works. I still think you should be able to step through the program and see if the code is getting called correctly.
Ben
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If Not Page.IsPostback has no effect...but I think I found something.
Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
SQLconn.Open()
Dim SelectCmd1 As New SqlCommand("SP1", SQLconn)
SelectCmd1.CommandType = CommandType.StoredProcedure
Dim result1 As Integer
Dim myDataReader1 As SqlDataReader
myDataReader1 = SelectCmd1.ExecuteReader()
myDataReader1.Read()
result1 = myDataReader1.GetInt32(0)
SQLconn.Close()
ChangeButton1(result1)
End Sub
"Handles MyBase.Load" is the key....when I remove this I have the same as in the MyRefresh().
I had to modified it like this:
Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
If Not Page.IsPostBack Then
Refresh()
End If
End Sub
Sub Refresh()
SQLconn.Open()
Dim SelectCmd1 As New SqlCommand("SP1", SQLconn)
SelectCmd1.CommandType = CommandType.StoredProcedure
Dim result1 As Integer
Dim myDataReader1 As SqlDataReader
myDataReader1 = SelectCmd1.ExecuteReader()
myDataReader1.Read()
result1 = myDataReader1.GetInt32(0)
SQLconn.Close()
ChangeButton1(result1)
End Sub
Why is Handles MyBase.Load so important???
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Without it your load event doesn't fire. That is how your code behind methods get linked into events. Glad you figured it out.
Ben
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Thank you..
but I haven't finished yet..
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Hi,
This has got me really baffled. When I run Dim url As String = HttpContext.Current.Request.Url.AbsolutePath.ToLower from Application_beginRequest in Global.asax with server that ships with Visual Web Developer everything works as expected.
However, today when I tried to move all code onto IIS server this just doesn't return the same URL!
On localhost (Visual Web Developer), variable url is /sandbox/my/home/page, but on IIS it returns /sandbox/index.aspx.
Yes, this is another HttpContext.RewritePath application which is why I need to know what the user types as a URL event though a 404 error is expected.
Anyone have any idea why the url would be different, or know of anything I could possibly be doing wrong?
Any help is greatly appreciated.
Thanks,
Jason.
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This is just a guess, but with VS you are telling it what page to start on. With IIS when you enter the url it uses your IIS settings to figure out what the default page should be. index.aspx sounds like the default page you set up in IIS. So if you want a call to the basic url to go to a different default page you need to change it in IIS manager.
Hope that helps.
Ben
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Ben,
Thank you for the prompt reply. I have enabled the default content page in IIS and it's pointing to index.aspx. I do want the default page to be index.aspx.
The thing is, I've designed user friendly urls but they won't work because IIS is trying to go directly to them but they are virtual, so they don't exist. I'm using HttpContext.RewritePath to rewrite the urls.
Jason.
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So if the user types in the base url with no page, it will go to your default page. So what is your problem? I have done much RewritePath stuff, but I have done some http handler stuff. Are you sure your handler is set up correctly so that it is getting called?
Ben
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I think you might be misunderstanding my problem. Let's say my root directory has only the following files:
* index.aspx
* web.config
* global.asax
When the user visits, for example: http://www.mysite.com/tutorials/tute/1
The global.asax file should be able to grab this URL using HttpContext.Current.Request.Url.AbsolutePath.ToLower method and I will use this string to formulate a RewritePath to index.aspx?a=tutorials&tute=1.
As you can see, the directories tutorials, tute and 01 don't exist, so there is no index.aspx file to refer to.
My problem is, IIS and HttpContext.AbsolutePath isn't giving me http://www.mysite.com/tutorials/tute/1 or any of the variables. But the strange thing is, this is all working on localhost.
So it makes me wonder if it's something to do with IIS, or if there is another way to get the typed URL.
Jason.
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Well, if IIS is trying to correct the url and re-direct it to your default page, then you there is probably only one thing you can do. Turn off the default page in IIS and then you will have to write an http handler module for the 404 and properly redirect them. At least that is what I would try to do.
Ben
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Thanks for the suggestions Ben, but I can't turn off the default pages because I can't guarantee every visitor will use http://www.mysite.com/tutorials/tute/1, they may access via http://www.mysite.com.
Also, doesn't Application_beginRequest execute before it delivers a page? I have code that works (and I know it does because I've tried hard coding a string in place of the return value of HttpContext.Current.Request.Url.AbsolutePath.ToLower and tested on IIS), I just need to get the URL of page before IIS decides to throw a 404.
Ugh, what's going on with IIS?!
-.-..
Jason
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There must be something going on with your setup. I just tried one of my site putting in a virtual dir that doesn't exist and I get the 404 message. So, do you have an error page set up? Or something like that? According to MS help:
The following events are executed by the HttpApplication class while the request is processed. The events are of particular interest to developers who want to extend the HttpApplication class.
Validate the request, which examines the information sent by the browser and determines whether it contains potentially malicious markup. For more information, see ValidateRequest and Script Exploits Overview.
Perform URL mapping, if any URLs have been configured in the UrlMappingsSection section of the Web.config file.
Raise the BeginRequest event.
Raise the AuthenticateRequest event.
Raise the PostAuthenticateRequest event.
Raise the AuthorizeRequest event.
Raise the PostAuthorizeRequest event.
Raise the ResolveRequestCache event.
Raise the PostResolveRequestCache event.
Based on the file name extension of the requested resource (mapped in the application's configuration file), select a class that implements IHttpHandler to process the request. If the request is for an object (page) derived from the Page class and the page needs to be compiled, ASP.NET compiles the page before creating an instance of it.
Raise the PostMapRequestHandler event.
Raise the AcquireRequestState event.
Raise the PostAcquireRequestState event.
Raise the PreRequestHandlerExecute event.
Call the ProcessRequest method (or the asynchronous version BeginProcessRequest) of the appropriate IHttpHandler class for the request. For example, if the request is for a page, the current page instance handles the request.
Raise the PostRequestHandlerExecute event.
Raise the ReleaseRequestState event.
Raise the PostReleaseRequestState event.
Perform response filtering if the Filter property is defined.
Raise the UpdateRequestCache event.
Raise the PostUpdateRequestCache event.
Raise the EndRequest event.
Anyway, don't know if that helps or not.
Ben
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Err.. not really, I don't understand IIS well enough or to that level.
Thanks anyway.
Jason
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