C# - Draw "on Top" Of Hosted Controls In .NET?
Mar 16, 2010
I am working on a simple form builder which hosts "live" .NET objects as well as performing its own drawing for guidelines (grid), object selection etc. Things are going well but as you see below, the custom painting is not exactly optimal since it always paints behind the hosted controls.
How can I modify my painting logic to draw "on top" of all hosted controls?
If the image is missing in your SO view it can be viewed here: [URL]
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May 18, 2010
I want to draw a rectangle over some controls so that the controls are partly obscured.
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Nov 3, 2009
Is there a way to use SVG in vb.net to draw custom controls? Or any other way?
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Nov 18, 2011
How would I Pre-Draw/Pre-Rendering Controls on a form before it appears? Is this possible??
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Nov 18, 2010
I have the following problem. I have some project written in Visual Basic (not Visual Basic .NET but simple Visual Basic - sic!). I can compile it and generate a dll. Then inside my web application I add reference to this dll library. When I run my web application hosted in default Visual Studio server, everything is fine and I can debug my Visual Basic project. However, when I host my web application in IIS then I can't.Code does not stop in my breakpoint. My asp.net catch the exception when I try to execute some method from the mentioned library which is something like:
Unable to cast COM object of type 'xxx' to interface type 'yyy'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{4C2875B5-3265-306B-9C74-1BEC98986B1A}' failed due to the following error: Error loading type library/DLL. (Exception from HRESULT: 0x80029C4A (TYPE_E_CANTLOADLIBRARY)).
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Nov 21, 2009
I have sets of web hosted images that I need my user to be able to select 1 from each. I thought a listbox would work for this, but I can't figure out add an image to one. Is this possible? better way of doing this? I am using the latest free vb.
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May 10, 2011
I have a VB.NET WCF service hosted as a Window Service. I was able to create an install package, install the service to my machine, and start the service manually from Services in Administrative Tools.Now when I try to reference the service in my test console application (Address: http://localhost:8080/), I get the following error:There was an error downloading 'http://localhost:8080'.` Unable to connect to the remote server No connection could be made because the target machine actively refused it 127.0.0.1:8080`
[code]....
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Jan 16, 2010
I have a class SELF that is hosted by a couple different classes. Basically, the hosting class HOST calls a method in SELF. SELF is passed HOST as an argument in the constructor, so SELF can call methods in HOST. In normal situations, a call to HOST will do something minor, then return so that SELF can continue. However, for one particular type of HOST, one of the calls from SELF to HOST will cause HOST to call SELF, and so on ad infinitum. A classic, though convoluted, case of recursion. Once again, this is only going to happen for one type of HOST. For other types of HOST, that particular call will not cause HOST to call SELF, so there will be no recursion. Nonetheless, there is no getting around it in one case.
I can see two means to decouple the recursion, and I am wondering which one (or a third) would work best:
1) Add a timer into that particular HOST so that the call from SELF that would trigger the recursion would actually just start the timer in HOST, then return. When the timer ticks, HOST can call SELF. The recursion is broken because the call to SELF is done on the timer event, and not when SELF called HOST.
2) As it happens, HOST makes the first call to SELF in a background thread, which means I don't really need to worry whether this thread blocks or not. Therefore, I could have this background thread spawn a second background thread to make the call to SELF, then have the initial HOST thread JOIN on the second thread. This means that the initial thread will block until the second thread finishes. Meanwhile, the second thread will call HOST, and the HOST won't call back to SELF, it will just return like all the other HOST objects would do. This will allow the second thread to run to completion. When the second thread completes, the first thread will take over and call SELF again on a new second thread. Therefore, the recursion is broken because the secondary thread will always run to completion, and the primary thread will wait for the secondary thread to complete, then call it again.
I tend to prefer the second option, because the first option involves a pause of some length (the minimum for a timer, which is pretty small), while the second doesn't, but the first option is actually a little easier to implement.
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Aug 26, 2011
I have a WCF Service (with installer) that I have built and installed in Windows Services. Opened up Admin Tools, Services, and started the service without a problem. So now I'm beginning a new project (a simple Windows forms app). I want to consume my new WCF, but have no idea how. I can't seem to add a reference / add a service reference to it.
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Oct 7, 2011
I'm hosting a DateTimePicker in a DataGridView using the Example code from this page [URL]..I'm looking to set the MinDate of the DateTimePicker from within Form1 when I declare the CalendarColumn as I want to limit how far back the user is able to selet a date. Since this MinDate will change as time marches on I need to be able to set it from within Form1.
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Oct 13, 2011
I have creatred a self hosted service with a proxy Service and Contrats
[Code]....
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Oct 14, 2011
I have created a self hosted service with a proxy Service and Contracts
Namespace ECDBDatabase.Service
Public Class DatabaseService
<ServiceContract(Name:="DatabaseService", Namespace:="net.tcp://localhost:9010/ECDBDatabase.Service")> _
Public Interface IRPMSDatabaseService
<OperationContract()> _
Function GetHandover(ByVal Username As String, ByVal Password As String) As DataSet
End Interface
[Code]...
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Jan 19, 2010
I am using Request.IsSecureConnection to check for SSL and redirecting where appropriate. When running my asp.net website on Rackspace's cloud, the server is running behind an SSL cluster, so IsSecureConnection will always return false. The same goes for checking whether the url contains "https://", always false, checking the port, etc. So the website gets stuck in big redirect loop.[code]...
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Jul 20, 2009
If you can take a look at the received tab [url] It is meant to display the hosted images full properties. It doesnt at the moment because it completly fills the tab with ugly information.Can any of you think of a better way to display the newly hosted images information.?Im thinking of just killing off the tab. But thats not very professioanl in case the user wants the full picture information?
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Aug 24, 2007
I followed an example to add a custom control (multicolumnCombobox) to my datagridview.[code]Ok, this is fine and dandy, for it adds the custom control to column 2 and row X of that loop.... Now, when I actually use the control for lets say row 0, how do I get the row 0 cell 2 value to be the same as the custom control??I have no way to communicate between the custom control and the datagridview cell.
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Jun 12, 2011
I have myself a self-hosted WCF server setup, which serves a clientaccesspolicy.xml and an index.htm which is just points to my xap (accessible via app.xap).
I'm currently serving them via the following code:
Public Function GetPolicy() As System.IO.Stream Implements IClientAccessPolicy.GetPolicy
WebOperationContext.Current.OutgoingResponse.ContentType = "application/xml"
Return New IO.MemoryStream(IO.File.ReadAllBytes("Server Files/ClientAccessPolicy.xml"))
End Function
Public Function GetIndex() As IO.Stream Implements ISilverlightServer.GetIndex
[Code] .....
It works, does the job I'm after. However, I don't think this streams the xap properly, and I know it's a streaming type. If this isn't streaming it properly, how should I stream it? (The endpoint that the XAP and index.htm files are coming through has a webHttpBinding binding). Is it being streamed properly? Or should I make some changes?
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Oct 16, 2008
I have created a self hosted service with a proxy
Service and Contracts
Namespace ECDBDatabase.Service
Public Class DatabaseService
<ServiceContract(Name:="DatabaseService",
[code].....
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Dec 26, 2009
I have a WinForm 'frmUploadStatus' which has a datagridview filled with 1000 records & 20 columns.And also I hosted in hosting server ms sql server 2005 database which has tables one of its table 'Status' (it has 10 columns).Now I want to upload from WinForm 'frmUploadStatus' to ms sql db.
If I change only the connectionstring in my program for uploading the records, it takes more time for uploading.
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Jul 2, 2010
i have a webbrowser and in it is the URL of the chat hosted by bravenet is there a way to have it so the user only see's textbox's and a button then it lodes? This is the chat URL so you can see how it works.
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Apr 26, 2010
I need to get the DataGridView to perform the way it should perform. I'm new to the .NET environment, but I learn fairly quickly. However, I find it difficult to decipher themassive black box of the DataGridView control enough to make it do anything other than what it already does--Draw very slowly.
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Aug 31, 2010
I was just wondering if it's possible to create an app that interacts with a database hosted on a web server... or is it only possible using VB.NET? Also if it is possible, is there any good documentation or tutorials I could reference?
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Oct 26, 2009
My ultimate goal is to allow users to select a file from a dialog as if they are uploading a file. Instead of file being saved to the server, a hyperlink will be generated from the file's path.This hyperlink will then be used on our intranet page in order to open the file located on our network share.Is there any practical way to accomplish this?I have tried both an HTML file type insert and .Net's FileUpload Control but neither will work since for security reasons the full path of the file is never accessible.
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Apr 11, 2012
I am struggling to send parameters to a VB.NET WS(web service) that is hosted on Windows Azure. Getting a simple hello world (no parameters) works fine, but for some reason my parameters on the web service side are null? Web service function to be called (IService1.vb):
<OperationContract()>
Function GetAddition(ByVal number1 As Integer, ByVal number2 As Integer) As String
Function implementation (Service1.svc.vb):Function GetAddition(ByVal number1 As Integer, ByVal number2 As Integer) As String Implements IService1.GetAddition Return number1 + number2 End Function
[Code]...
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Oct 26, 2009
I have created Usercontrol in visual Basic2008 i want this usercontrol to be hosted/opened in Internet Explorer or any web browser
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Nov 15, 2010
I know when I draw to the form and add controls I get a flicker effect.If I draw to a picturebox on the form and add controls will the picturebox flicker?
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Sep 4, 2010
I'm trying to run an instance of the Azure Blob Storage in the Azure Visual Studio 2010 development environment, but keep getting the followingrror:System.InvalidOperationException: Not running in a hosted service or the Development Fabric.The stack trace is pointing to these lines:
Imports Microsoft.WindowsAzure
Imports Microsoft.WindowsAzure.Diagnostics
Imports Microsoft.WindowsAzure.StorageClient
[code].....
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Jan 25, 2012
Is it possible to view client transaction requests and host response in a self hosted console window?
Front end client sends request to service
Service console displays requested data in console window and forwards to listening server
Server responds with data
Response is displayed in console window
I guess it would be displaying the traces in the console window.
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Oct 14, 2011
I have a form that uses a button to draw a line and a second button to draw a rectangle. I have a third button to clear the form but can't find a code example to code the Clear button.
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Jul 2, 2009
I have to draw a bar graph in my vb.net program. I used AxMSChart to create a graph. Everything has gone fine but when i published this and run on Vista PC, all form was good except my form includes MSChart. It says class not registered.So i have to draw a graph except MSChart tool.
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Jul 14, 2011
i have a Windows service that is hosting a WCF service through net.tcp and this is working great. I have also created a WCF service application. I am trying to add the net.tcp service reference to the service application. Then I add it to the GAC that goes ok but if I try to RegAsm the WCF service application to allow it to be called from Server.CreateObject I get the error:
Warning: Type library exporter encountered a type that derives from a
generic class and is not marked as
[ClassInterface(ClassInterfaceType.None)]. Class interfaces cannot be
exposed for such types. Consider marking the type with
[ClassInterface(ClassInterfaceType.None)] and exposing an explicit
interface as the default interface to COM using the
ComDefaultInterface attribute.
It does not work. I have tried to call it through a class library but this does not work either as the end point is not set correctly.
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