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The northwnd.mdf file in the App_Data folder of the WebCh13 project has very nearly the same structure and contents as the Northwind.mdb file. As a result, you can build the same order history solution for either database. However, this section presents an enhanced solution from a couple of different perspectives. Switching from Access to SQL Server Express is an improvement all by itself. One significant reason for the superiority of SQL Server Express is because it supports multithreading. Access does not have built-in support for multithreading with IIS (http://support.microsoft.com/default.aspx scid=kb;en-us;299973). This distinction makes SQL Server Express better able to handle multiple requests at the same time. Beyond the native capabilities of SQL Server Express versus Access, three other areas improve the SQL Server Express solution. The SQL Server Express Northwind database file in the WebCh13 project was enhanced with a special view, vOSubtotals, which facilitates the development of customer order histories. The Viewing Data and Modifying Databases section describes the process for creating the vOSubtotals view. The SQL Server Express solution uses a ListBox control to show the CompanyName column value from the Customers table, but returns the CustomerID column value for the selected item. This relieves users from needing to know the CustomerID before they can query for the order history of a company. Special formatting is applied to the GridView columns so that the results are easier to read in the SQL Server Express solution. All column values are right justified. The OrderDate column has a format to strip the time component of datetime values. The Freight, Subtotal, and Freight & Subtotal columns have a format setting for displaying currency values in the local regional setting for the local Windows operating system.

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c# ocr pdf to text: Tesseract is one of the most accurate open source OCR engines. Tesseract allows us to convert the given image into the text . Before going to the code we need to download the assembly and tessdata of the Tesseract . We can download the data from GitHub or NuGet.
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If you fail to unmount the device, Ubuntu will still believe the device is attached. This shouldn t cause too many problems, but it could crash any programs that were accessing the device. It might also mean the card isn t recognized properly when you reinsert it. In rare instances, data loss can occur.

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You can start the solution by creating a Web Form page named LookupSSEDataaspx The presentation of the solution for this page emphasizes graphical development techniques As a consequence, you ll see just how easy it can be to create web-based database solutions with VWDE In spite of the enhanced functionality from the SQL Server Express solution relative to the Access database solution, you still do not need to write a single line of code As mentioned, the SQL Server Express solution includes a ListBox control to let a user select a customer 1 Start the solution by dragging a ListBox control to the LookupSSEDataaspx page before the opening div tag 2 Then, use the Properties window to make three property settings for the ListBox control Set the width to 250 pixels Set the height to 150 pixels Assign True to the AutoPostBack property 3.

Select the ReceiveRequest activity and click the Content link. This time, select the Parameters radio button. Parameters are set up similar to variables and arguments. Click the Add new parameter link. Enter the Name as Author and set the Assign To property to author. Add another parameter with the Name Title and Assign To as title. Add a third parameter named ISBN and enter the Assign To as isbn. The completed list should look like the one shown in Figure 10-14.

Summary

This chapter has led you on your first steps in exploring the Linux file system. The file system is vitally important to how Linux works, and we ll go into it in much depth in upcoming chapters. Here, you were introduced to elementary concepts, such as where personal files are stored and the basic rules that govern what you can and cannot do with files. We also looked at the principal method of accessing files via the GUI: the Nautilus file manager. Additionally, you learned how to run programs manually, as well as how to access any Windows partition or files that may exist on your hard disk or across a network. In Part 4 of this book, starting in the next chapter, we will look at some of the underlying technology that makes Ubuntu work, and how you can gain more control over your computer. 13 introduces the BASH shell perhaps the most powerful piece of software offered by Ubuntu to control your system.

Next, you can open the smart tag window for the ListBox control and click the Choose data source link This click opens a wizard that allows you to create a bound data source for the ListBox On a series of successive screens, make these selections 1 Select New Data Source from a drop-down box 2 Select a Database as the type of source 3 From the Choose Your Data Connection screen select northwndmdf This database connection was created in the Making Database Connections section It points at the northwndmdf file in the App_Data folder for the WebCh13 project 4 You can choose to have the wizard save the connection string for the northwndmdf database connection This selection can make access to your databases more secure by not including the connection string in the Web Form page 5.

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