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序列...
您可以使用OpenFileDialog和SaveFileDialog元件提供檔案系統的存取權限。但如果您需要建立自己的檔案對話方塊,Visual Basic 2008 會提供 DirListBox、DriveListBox 和 FileListBox 控制項,做為 Microsoft Visual Basic Compatibility 執行階段程式庫的一部分。 您可以使用下列程序,將 DirListBox、DriveListBox 或 FileListB...
Adding Items to a ComboBox in a DataGridView Adding Multiple Arrays To a ListView Control Adding rows to a datatable based on elements of an array Adding spell check to textboxes in Winform app Adding Text To A Rich Text Box ... Adding Value and text to a Listbox or a combobox ...
In a UserForm, when you set the MultiSelect property to 1 - fmMultiSelectMulti for a ListBox control, you can select any number of items from a list. For example, if a list contains the days of the week (Sunday, Monday, Tuesday, Wednesday, Thursday, Fr...
Method 1 – Using a Named Range in the RowSource of a VBA ListBox Steps Open the Visual Basic Editor by clicking Alt+F11. Create a new UserForm by going to Insert and choosing UserForm. In the toolbox, select the ListBox icon and draw a box inside the UserForm window (named UserForm1...
Use Excel VBA to Make a Dynamic and Dependent Combo Box We have two columns: Days and Months. We will introduce two combo boxes here. The first box will allow you to pick the category, months or days, and the second will show a list of options. ...
打开Visual Studio。 选择“创建新项目”。 在“搜索模板”框中,键入“winforms”,然后等待搜索结果显示。 在“代码语言”下拉列表中,选择“C#”或“Visual Basic”。 在模板列表中,选择Windows 窗体应用,然后选择“下一步”。 重要 请勿选择“Windows 窗体应用 (.NET Framework)”模板。 下图显示了 C...
so that it is always marshaled to the thread that///owns the list box control.////////////privatevoidAddFiles(string[] files,intstartIndex,intcount){while(count-- >0) { listBo Using the Multithreaded Control on a Form The following example shows how the multithreadedDirectorySearchercont...
The first step for many applications that use time zone information applications is to determine whether required time zones are available on the local system, or to give the user a list of time zones from which to select. This requires that an application enumerate the time zones defined on ...
The videos in this series demonstrate how to use new and existing features found in Visual Basic 10. Presented by Charlie Calvert #1 | How Do I: Use Autoimplemented Properties in Visual Basic? (8 Minutes, 3 Seconds) #2 | How Do I: Use Implicit Line Continuation in Visual Basic 10?