... Creating aDataAdapterObjectUsingVisualStudio .NET In this section, you'll learn how to create aDataAdapterusingVisualStudio .NET. Note You'll find a completed VS .NET ... SqlDataAdapter object in the tray Warning You need to set the Connection property of the SelectCommand in your sqlDataAdapter1 object to your Connection object before the DataAdapter can access ... form. When you drag a SqlDataAdapter object to your form, you start the Data Adapter Configuration Wizard, as shown in Figure 10.8. Figure 10.8: The Data Adapter Configuration Wizard Click the...
... Creating a Command ObjectUsingVisualStudio .NET To create a SqlCommand objectusingVisualStudio .NET (VS .NET) , you drag a SqlCommand object from the Data tab of the Toolbox ... named MyDataReader containing a Windows application. 2. Add a SqlConnection object to your project (refer back to the previous chapter to see how to add a SqlConnection objectusing VS .NET) . ... This object will have the default name of sqlConnection1. 3. Configure your sqlConnection1 object to access your Northwind database. Drag a SqlCommand object to your form. Figure 8.1 shows a...
... Creating a Connection ObjectUsingVisualStudio .NET To create a SqlConnection objectusingVisualStudio .NET, you drag a SqlConnection object from the Data tab of the Toolbox ... You'll recall that a SqlConnection object allows you to connect to a SQL Server database. You can also drag an OleDbConnection object from the Toolbox to your form to connect to a database ... details are correct. At this point, you've entered all the mandatory details, and you can choose to save your details by clicking OK, or you can click Advanced to enter additional details...
... Start Without Debugging. Figure 9.4 shows the running form. Figure 9.4: The running form Using a DataReader Object in VisualStudio .NET You can't visually create a DataReader object ... DataReader object in VisualStudio .NET (VS .NET) ; you can only create them using program statements. In this section, you'll see how to create a SqlDataReader object and use it to retrieve ... from a SqlCommand object, which you saw how to create using VS .NET in the previous chapter. That SqlCommand object contained a SELECT statement that retrieved the CustomerID, CompanyName, and...
... Explorer-that's the best way to learn. Once you've connected to the database, you can view things such as the tables. You can also retrieve and modify rows in the tables. You can drill ... clicking the Show Diagram button in the toolbar and selecting columns from the table, as shown in Figure 3.29. As you can see, I've selected the ContactName, CompanyName, and CustomerID columns ... the tables in the database by clicking the Add icon in the tree in Server Explorer, and you can retrieve the rows from a table by clicking the right mouse button on the table in the tree and...
... ngh a cho ta biết về dữ kiện. Thí dụ XMLSchema c a một XML file là metadata cắt ngh a về data structure c a data trong XML file. Chính cái XML Schema cũng là một XML file. Các .NET application ... .NET 27 Dim AppPath As String Dim Pos As Integer ' Fetch full pathname of the EXE file AppPath = System.Reflection.Assembly.GetExecutingAssembly.Location ' Locate the last slash ... NhàSảnXuất.TồnKho.PhòngLạnhThay đổi trong Data TypesTất cả đều là Object Một thay đổi lớn cho Data Type c a VB .NET, là những variables dùngData Type đ a phương như Integer, Single, Boolean,.v.v đều là nhữngObjects....
... Microsoft .NET 13Bài 2 Visual Studio. NET Visual Studio. NET Để chạy VisualStudio .NET bạn cần phải Set Time c a Windows lại trướccuối tháng 7,2001, eg: 1-July-2001. Visual Studio. NET Beta 2 hiện nay ... trình. Sau đó ta có thể viết: AppPath = VB6.Left(AppPath, Pos)Nguyên program chúng ta tại đây là Public Class Form1. Form1 th a kếstandard form class c a .NET Framework nên ta declare: Inherits ... End ' Terminate the programEnd SubPrivate Sub Form1_Load(ByVal sender As System .Object, ByVal e AsSystem.EventArgs) Handles MyBase.Load ' Obtain the folder where this program EXE...
... View tab uses a CrystalReportViewer object on the tab page. Steps Open and run the Visual Basic .NET- Chapter 10 solution. Click on the button labeled How-To 10.4. Clicking on the tabs, you can ... data has been exported. The last tab, View, displays the report in a Viewer. 1. Create a Windows Form. Then place a Tab control on your form. 2. Add pages for Print, Export, and View, using ... or Exported Using Visual Basic .NET Code I know I can use the Crystal Report Viewer to print and export my reports, but I want to be able to have control over that, and maybe not even include...
... loại cache database nho nhỏ (gọi là disconnected database) để thay thế ADO. Thay vì application connects vĩnh viễn với database mẹ qua ADO, application trong .NET làm việc với portable database ... từ database mẹ. Khi nào cần, portable database nầy (ADO .NET) sẽ được reconciled với database mẹ để update các thay đổi. Hai tables trong ADO .NET có thể được related nhau trong Master/Details ... relationship. Vì ADO .NET có ch a original data lẫn data mới nhất nên Rollback trong ADO .NET rất dễ dàng và nhẹ ký. XML được yểm trợ tối a. Nằm ph a sau ADO .NET là XML. XML có thể là Table...
... sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick ' Display Date and Time every half a second Label3.Text = DateTime.Now.ToLongDateString & " " & DateTime.Now.ToLongTimeString ... c a tên project trên trang StartPage, hay dùng Menu command File | Open | Project , hay Menu Command File | Recent Projects. Visual Studio. NET IDE Trong program Sở thú Saigon nầy ta có hai ... kế ta có thể edit các List items c a một Listbox bằng cách mở property Items Collection ra và Edit vào một trang. Bài 2 Visual Studio. NET Visual Studio. NET Để chạy VisualStudio .NET bạn...
... Studio. NET .NET Framework & Visual Studio. NET NET Framework Base Class Library NET Framework Base Class LibraryCommon Language SpecificationCommon Language SpecificationADO .NET: Data and XMLADO .NET: ... FormsJScriptJScript……System.DrawingSystem.DrawingSystem.Windows.FormsSystem.Windows.FormsWindowsWindowsFormsForms .NET Framework & Visual Studio. NET .NET Framework & Visual Studio. NET NET Framework Base Class Library NET Framework Base Class LibraryCommon Language SpecificationCommon Language ... học Khoa Học Tự NhiênĐại học Khoa Học Tự Nhiên .NET Framework & Visual Studio. NET .NET Framework & Visual Studio. NET NET Framework Base Class Library NET Framework Base Class LibraryCommon...