下列情形可能會擲回例外狀況: 本機檔案的路徑無效 (ArgumentException)。 驗證(Authentication) 失敗 (SecurityException)。 連接已逾時 (TimeoutException)。 請參閱 工作 HOW TO:在 Visual Basic 中下載檔案 HOW TO:在 Visual Basic 中剖析檔案路徑 參考 Microsoft.VisualBasic.Devices.Network UploadFile中文...
若要卸載個別組件,您將必須卸載所有包含該組件的應用程式定義域。 請使用 AppDomain 的Unload 方法來卸載應用程式定義域。 如需詳細資訊,請參閱 HOW TO:卸載應用程式定義域。請參閱工作HOW TO:將組件載入應用程式定義域參考應用程式定義域 (C# 和 Visual Basic)...
使用DownloadFile方法下載檔案,並以字串或 URI 形式指定目標檔案的位置,以及指定要儲存檔案的位置。 此範例會從http://www.cohowinery.com/downloads下載WineList.txt檔案,然後將它儲存至C:\Documents and Settings\All Users\Documents: 使用
此主題會描述如何使用 My.Computer.Ports,顯示 Visual Basic 中可用的電腦序列埠。 為了讓使用者能夠選取要使用的連接埠,序列埠的名稱會放置在 ListBox 控制項中。 範例 這個範例會對 My.Computer.Ports.SerialPortNames 屬性 (Property) 傳回的所有字串 (String) 執行迴圈 (Loop)。 這些字串都是電腦上可用...
You will need: Visual Studio 2008 or Visual Basic 2008 Express These samples use the Northwind database (Download) The installer will copy a script to create the Northwind database. To install the database on your local sqlexpress instance, open a command prompt as an administrator and run ...
Rename with the Visual Basic run-time Use theRenameFilemethod of theMy.Computer.FileSystemobject to rename a file by supplying the full path to the file and the new file name. This method can't be used to move a file to a different directory. To learn how to move a file, seeHow to:...
Visual Basic.NET How to Program, 2nd EditionHarvey M. DeitelPaul J. DeitelTem R. Nieto
Visual Basic 6.0 is a user-friendly programming language by Microsoft notable for its simplicity and effectiveness in developing Windows applications. Designed with an easy-to-learn approach, VB6 allows programmers to create simple and complex applications, and it's quite strong at building graphical ...
In the Microsoft Word Visual Basic Editor, you can create references to object libraries or code in an external document or template. This allows you to call external procedures as if they were written in your own project. Note that problems can o...
' Your Microsoft Visual Basic for Applications macro function takes 1 ' parameter, the sheet object that you are going to fill. Public Sub DoKbTest(oSheetToFill As Object) Dim i As Integer, j As Integer Dim sMsg As String For i = 1 To 100 ...