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The web service isn't sending the Content-Type of the response, and I notice that it's <meta> tag is formatted incorrectly. URL is not a valid attribute, and the CONTENT attribute should also look like this:
<meta http-equiv="refresh" content="0;url=http://myhost.com/WS.asmx"> I'm guessing you don't have control over the WS. In any case, it appears that the WS is trying to redirect you to a new URL in a bad way. With WS's, they should actually send the 301 or similar HTTP status code. A web service proxy isn't required to understand HTML content like this, and it would be crazy to assume that one would.
If you have control over the WS, change this behavior. If you don't, contact the host/developer.
Finally, if the server is sending a 301 (or similar) in addition to the content of the page (which is odd, but possible), make sure you set your web proxy's AllowAutoRedirect to true (the default is false).
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Heath Stewart wrote:
If you have control over the WS, change this behavior
Actually I'm the developer of that WS , but I couldn't understand how should I change that behaviour. This behaviour sometimes happend and I don't know in what condition it happen. Do you know what cause this?
Heath Stewart wrote:
make sure you set your web proxy's AllowAutoRedirect to true
I don't have VS.NET now to test but I check the MSDN. Is that something that I should set in the client before the first call of it and its part of web service class?
Mazy
No sig. available now.
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This should be set after you instantiate the client proxy and before you make your call.
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Thanks Heat. But what about first part you said. The part you said if I have access to the own WS , I change that behaviour.
Mazy
No sig. available now.
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ASP.NET is trying to redirect the call to your WS for some reason. The weird part is that it's sending HTML to do so (hence the META HTTP-EQUIV="refresh", which is the same as the HTTP Refresh header). I honestly don't know what could be causing this. If the WS call needs to be redirected (and that's one of the problems), it should simply send the HTTP status codes accordingly - not content. Stopping the redirect would be your best option if you can figure out why it is trying to redirect.
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Hi,
How would you go about designing a tool in C# that would let you run your search on multiple search engines and then bring back the results to you?
Any high-level ideas, hints?
Thanks...
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There's already a ton of tools that do this, such as Mozilla (http://www.mozilla.org[^]), which is a completely open-source browser and has tools similar to Mac's Sherlock technology. It has definitions for many search engines and collects all the results and displays them. Since it's open source, you can look at their implementation for an example.
It's really not a difficult problem, though. You just need a way to get results from search engines. Some - like Google - expose XML Web Services while others you can scrape the results (this is what mozilla does) from the pages. You then put all these results in a collection and display them.
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"Cancel " Button in Collection Editor cancels any add/remove modification done to the list. It does not cancel the changes done to an existing item.
Is there any mechanism available to revert back to the previous value when we press "Cancel" Button on collection editor after modifying an existing item in collection editor?
Thanks in advance ! 
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Write your own custom collection editor and make a deep copy of the object which you're trying to edit before displaying it in the collectio editor form you'd create. The reason this is happening is because the collection editor is responsible for editing the collection. The objects in that collection are references to objects elsewhere, something the collection editor does not care about. By making a deep copy of the collection you are creating new objects to which the collection of objects reference. Depending on your implementation, though, this might now work.
Say that the collection references a bunch of controls in your form. If you make a deep copy, edit it, and replace the original copy you have to remove all the old controls from the Controls collection of the control or form and add the new ones. If all the collection contains is a bunch of strings, ListViewItems, etc., then this is probably okay to do.
You could make it easy and extend the CollectionEditor, override EditValue, and re-use the CollectionEditor.CollectionForm. Just remember to change the EditorAttribute on the property that is of the collection Type (or on the collection class itself).
One final option uses the DesignerTransaction, though I don't know if it'll work in this case. Since an IServiceProvider is passed to the UITypeEditor.EditValue, you could try getting the IDesignerHost service and call CreateTransaction on it to create an associated DesignerTransaction. You can then commit or undo a batch of operations. You could do something like this:
protected override object EditValue(ITypeDescriptorContext context,
IServiceProvider provider, object value)
{
DesignerTransaction trans = null;
IDesignerHost host = provider.GetService(typeof(IDesignerHost));
if (host != null)
trans = host.CreateTransaction();
IWindowsFormsEditorService forms = provider.GetService(typeof(
IWindowsFormsEditorService));
try
{
CollectionForm form = new CollectionForm(this);
form.EditValue = value;
DialogResult result = form.ShowEditorDialog(forms);
if (result == DialogResult.OK)
{
value = form.EditValue;
if (trans != null) trans.Commit();
}
else if (trans != null) trans.Cancel();
}
catch
{
if (trans != null) trans.Cancel();
}
return value;
}This is a very simple example and untested, but the concept is sound so long as you can use the DesignerTransaction from this context (and I don't see why you couldn't). Read the documentation for the DesignerTransaction in the .NET Framework SDK for more information and an example.
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We have developed a C# application with Studio 2002 and framework 1.0.
In this app, we have about 10 sockets that communicate through tcp/ip and we
also have some 'platform invoke' calls to a third party dll along with numerous
calls to a SQL 2000 Server to log different events.
Today we had a 'crash' and the following popup was displayed:
**************************
Microsoft Visual C++ Runtime library
Assertion failed!
Program: ----
File: ..\..\..\nt\ssock\src\ntssockc.c
Line:1053
Expression: 1 == pConnection->fCallCheck
ABORT RETRY IGNORE
**************************
If we press ignore the program just continues and everything seems to be working.
But does anyone have a clue what has happened?
Could it be our program that does something wrong?
Could it be something in the framework?
Could it be the third-paty dll?
OR COULD IT BE SOMETHING WITH SQL SERVER? (I've found an article that suggests this)
Please respond if someone has an idea about this!
ip_tgz
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It is obvious your error happend in your socket calling part which means it is happend in your third party dll.
Mazy
No sig. available now.
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Are you sure about that?
This article suggests something else:
http://dbforums.com/arch/29/2003/2/695575
ip_tgz
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It happpends at VC++ run time library and at file ntssockc.c which is for socket.Isn't it?
Mazy
No sig. available now.
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Exactly what Mazdak said. The error happened in the VC++ runtime, not the CLR. If something croaked in the CLR, you'd get a SystemException (or derivative) and the dialog looks different and contains different information.
Since the error message is also giving you a filename, it's possible that you have debug symbols on your machine for the third-party library so you might want to try debugging your app.
In any case, it is possible that you called a P/Invoked function with a bad parameter and their library isn't validating params correctly, but the error still occured in their native library.
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how can i controll devices (using c#) connected to my serial ,paralell,com and usb ports?
and in what subject do i need to read?
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There is nothing in the .NET base class library that can do this out-right. There are, however, many articles here on CodeProject that deal with communicating to a few of these (I know they exist for serial and parallel ports). Just use the search at the top of any page.
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Hello I am using Sql Server 2000 Developer Edition, Now I know there are limitations too how many connections you have BUT This piece of code below executes a whole lot slower the second time you run it.
switch(cbSearch.SelectedItem.ToString())
{
case "Lastname":
cmd = new SqlCommand("SPSearchRmiInfoLastname", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@Lastname", txtSearch.Text);
break;
case "Firstname":
cmd = new SqlCommand("SPSearchRmiInfoFirstname", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@Firstname", txtSearch.Text);
break;
}
conn.Open();
Search.Clear();
SqlDataReader drd = cmd.ExecuteReader();
while(drd.Read())
{
Search.Rows.Add(new object[] {drd[0], drd[1], drd[2], drd[3]});
sbp.Text = Search.Rows.Count+" records found.";
}
dg.DataSource = Search;
drd.Close();
conn.Close();
The results are staggering.
First time: 1783 Milliseconds
Second time: 150326 Milliseconds
HOLY SHAZBOT!!
Now that's a difference right there,
Any ideas on why this is happening and how I can change it
Thanks,
Obe
NOTE: I already posted this in the Sql/ADO/ADO.NET Section
but it has todo with C# as well
------------------
I'm naked under my clothes...
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I can see that you have 2 different stored procedures. Is it always the same stored proc that is called the second time?
Also, as a piece of advice (not related to your problem), don't start you stored procedures name with "sp", because the server search for it in the "master" database when they begin with "sp".
--------
"I say no to drugs, but they don't listen."
- Marilyn Manson
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Thanks for the advice in the naming schema...
As for the SP, when I was timing the differences I used the same SP executed one right after the other
------------------
I'm naked under my clothes...
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Another quick performance tip (although it doesn't explain why it is slower the second time around)
Change your while loop to:
while(drd.Read())
{
Search.Rows.Add(new object[] {drd[0], drd[1], drd[2], drd[3]});
}
sbp.Text = string.Concat(Search.Rows.Count.ToString()," records found.")
Now you only generate your text once, which should speed things up. Also, I changes the stringA + stringB notation in to a string.Concat() method call which is a wee bit faster.
--Colin Mackay--
EuroCPian Spring 2004 Get Together[^]
"You can have everything in life you want if you will just help enough other people get what they want." --Zig Ziglar
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Hi All,
I have a DataAdapter that I create in a middle data tier. Now if I called that middle data tier class and it creates that DataAdapter that is global in that class does it persist through the life of the App?
Thanks,
JJ
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It will persist for the life of the class. Perhaps you want to make it static ?
Christian
I have drunk the cool-aid and found it wan and bitter. - Chris Maunder
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So I call the class in my other class to do a function call and once that
function call is done so is the life of the class, correct?
Use said to make it static in global in the class then it will persist for the life of the App. Is this usually done in Database design apps?
Thanks,
JJ
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MrJJKoolJ wrote:
So I call the class in my other class to do a function call and once that
function call is done so is the life of the class, correct?
If the class instance is created with a call to 'new' inside that function, yes.
MrJJKoolJ wrote:
Use said to make it static in global in the class then it will persist for the life of the App.
If it's a static variable in any scope then there will only ever be one instance of the class. If it remains the same instance, I'm not sure. On second thoughts, it may not solve anything at all. What needs to happen is simply that the instance of the class is created when your app starts and to be in a scope where it's not destroyed. In a desktop app, that would be the point where the main constructor is called, in an ASP.NET app, application start would be the way to go.
Christian
I have drunk the cool-aid and found it wan and bitter. - Chris Maunder
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I have a relativly simple control used for a layout manager for a form, its hierarchy is similar to this:
Parent Form
WorkspaceManager : Component
WorkspaceManagerControl : Control
DockingWindow : Control
ContainerWindow : Control
If I inherit 'DockingWindow' from a panel it gives me design time support to put controls on it etc.. (or set the ScrollableControlDesigner as the designer attribute)
This is almost what I want. The problem is that the DockingWindow is infact the control which draws all the required title bar etc.. and the ContainerWindow is the control I want to be able to drop controls onto
The ContainerWindow is an internal member of DockingWindow and definitly gets created and sized within the docking window ( a quick look with Spy++ shows this ) If I inherit this from Panel or add the ScrollableControlDesigner property to it I do not get the design time to support to drop the controls onto?
Why? Im probably missing some sort of attribute, or maybe need to expose the ContainerWindow as a property with some special attribute but I dont know what.
Any help/direction would be appreciated here.
Thanks - James
James Simpson
Web Developer
imebgo@hotmail.com
P S - This is what part of the alphabet would look like if Q and R were eliminated
Mitch Hedberg
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