Luo's Q&A profile

• Windows Forms Text does not appear on form load

  Here is the problem. Certain controls don't display text. I will create a form in the IDE that has group boxes and combo boxes on it. The combo boxes only display text on the top line or the line that I select. When I click the dropdown, nothing else is displayed. As for the group boxes, the header displays, but any labels inside the text box don't display any text. They show up in the IDE, but not at runtime. I have a screen shot showing the ID ...Show All

• Visual C++ Upcasting/Downcasting name jargon

  Well I am a little confused with naming jargon of casting. My intended goal was: CBase* pBase = static_cast (derived); What is it called upcasting/downcasting I guess what we are doing is casting a pointer from Dervied Class to Base one so we are moving up in hierachy. Should It not be called upcasting . and There are many articles where it is called upcasting like for example: http://www.codeproject.com/managedcpp/castingbasics.asp ...Show All

• SQL Server Visual Studio Exception 0x80131500

  When I try to open report designer in Visual Studio 2003, I get the following error: Exception from HRESULT: 0x80131500 I've seen a couple of posts on the web about this, but so far nobody seems to know what the problem is or how to fix it.  I'm hoping someone at Microsoft knows. hi all, I'm getting this error when i try to open a report in vs2003. However, i tried downloading that hotfix that was linked to ...Show All

• Visual Basic Attempting to add a datasource

  While in vb.net express, I still can't make a connection to the sqlexpress database when I attempt to add a new data source. I have tried everything. This is the error message I get: Unable to open the physical file “c:\Program Files\Microsoft SQL Server\MSSQL.1\Data\Master.mdf”. Operating system error 32: “32(The process cannot acces the file because it is being used by another process.)”. An attempt to attache an auto –named database for f ...Show All

• Windows Forms Saving a picture

  I have a picture box that i can draw in using mousePath.AddLine This works well but now i need to save the image into a datadase. Can anyone let me know how to do this And what datatype in the database table should I use What about to save a document in the same table Great example, thanks. ...Show All

• Smart Device Development Question about System.Data.DataSet in CF 2.0

  Hi there, I'm currently working on an application for the PocketPC-Platform. My tools are VS2005 (C#) and CF 2.0. The input data for my app came as an XML-File from a server-host. We do not want to use SQL-Server Mobile resp. SQL Server Expess-Edition because of higher costs for our customers (client licenses for the server). I'm converting this file to a System.Data.DataSet via the ReadXml()-Method. After ReadXml() has finished my DataSet ...Show All

• .NET Development Why its work in My Local FTP Account and not work in the remote FTP Account ??

  Hi   When I try to download the file from local FTP server using this code, the file will be downloaded successfully ---------------------------------------------------------------------- FtpWebRequest ftpRequest = ( FtpWebRequest ) FtpWebRequest .Create("ftp://localhost"); ftpRequest.Credentials = new NetworkCredential ( "a" , this .password); ftpRequest.Method = WebRequestMethods . Ftp .DownloadFile; FtpWebResponse ...Show All

• Visual C# How to save html file and respective dependent files in server

  Hi All Currently iam working with web application using C# ,my requirement is need to save a html file ,whenever saving a file the related image files should save in a folder Ex: When you click http://aspalliance.com/150 in URL when we use save as we can save it as HTML file and the related images are saved in related folder I need to implement the same concept Could any one please guide me Thanks a lot Probably you can us ...Show All

• Visual C# How to use RTC API 1.3 to write sip-based application?

      I have written a sip-based application on the basis of RTC API 1.3 code sample.But I don't know how to send message and receive message.      this.client = new RTCClientClass();     this.client.Initialize();     this.client.EventFilter =RTCConst.RTCEF_ALL;     this.client.IRTCEventNotification_Event_Event += new IRTCEventNotification_EventEventH ...Show All

• Smart Device Development Storage program

  I've created an application for compact framework 2.0 and sql mobile. When the device need a cold boot i lose all my files. My device can't use an storage card but the device has built in storage cards when i put my program on a built in storage card an the device needs a cold boot, all files are there but i can't run my application because compact framework and sql mobile are missing... how do i solve this problem thanks ...Show All

• Visual Basic combobox column in DataGrid

  Hey there, I've been searching everywhere for a good example of how I can add a combobox column to a Datagrid but without success. At the moment I have a DataGrid with 5 columns (3 from one database table, and 2 from another). I would like to remove the first 3 rows and place them into a combobox (multi-column combobox) this combobox must then be placed in the datagrid Does anyone have a good example please You ...Show All

• Visual Studio 2008 (Pre-release) WinFX Final Version

  I'm interesting to integrate avalon on my software that is currently on development, but i need to understand when circa is planned the final version of WinFX and the Beta 2 of WinFX is scheduled Bye The Feb CTP was just released. Full beta 2 is not expected for a while (several months would be my guess). The release of WinFX has been stated to match the release of Vista near the end of the year, or August for t ...Show All

• Visual C++ How do I execute my program in Visual C++ 2005??????

  just followed a hello world tutorial but it doesnt say how to run the program - can somebody tell me how to run it which button do I click on     If youa re doing this a lot, you may it very convenient to always run after rebuild. (My programs are always correct so I only even run once ;-)) To do this use a post build event: Alter Project properties, Build events. and copy "$(TargetDir)\$(TargetN ...Show All

• Windows Forms Binding a combo box to a data set

  Hi, I am trying to just list some columns in my dataset by binding it to a  combo box in windows form application. I can easily do that in a web  application. But really doesn't seem to work as a windows form  application.  Label1 an ...Show All

• Visual Basic Using GetAsyncKeyState

  How would I get the function keys using this As of now i have the following code: Function GetPressedKey() As String Dim cnt As Byte For cnt = 1 To 128 'Get the keystate of a specified key If GetAsyncKeyState(cnt) <> 0 Then GetPressedKey = Chr(cnt) Exit For End If Next cnt End Function And the following call: Label8.Text = DeclareAPI.GetPressedKey() where DeclareAPI is a module. While u ...Show All