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Make sure you import the System.Linq namespace with a using clause. You should notice two things in comparison to the code we used for the ASP.NET web application sample in section 4.3.1. First, we use an anonymous type to create objects containing a Book property. This is because the DataGridView control displays the properties of objects by default. If we returned strings instead of custom objects, all we would see displayed would be the title s Length, because that s the only property on strings. Second, we convert the result sequence into a list. This is required for the grid to perform data binding. Alternatively, we could use a BindingSource object. Figure 4.11 shows the result of this code sample s execution. This is not perfect, because the titles are not completely displayed. We ll improve this in the next step, Figure 4.11 Result of the first while we display more information at the same time. Windows Forms step Step 2: Using richer collections As we did for ASP.NET, we ll now use richer objects and not just strings. We ll reuse the same sample data from our running example, so make sure you reference the LinqBooks.Common project. Figure 4.12 shows the result we d like to get with a query that filters and sorts our book collection. To achieve this result, first create a new form named FormBooks. Add a DataGridView control Figure 4.12 Result of the second Windows Forms step to it, just like you did for the previous sample. This time, we ll specify the grid columns. Edit the columns using the grid s smart tags, as shown in figure 4.13.

2. Laura asks you, What if we decided that ITS should handle the entire institute s network administration If we were building the entire administrative structure right now using Windows Server 2003 and Active Directory, how would it be dif ferent than what we have now

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3. What are the potential issues of simply moving the management function of the existing structure to the ITS department, without modifying anything

DocLastAuthor DocLastPrintedTm DocLastSavedTm DocManager DocNoteCount DocPageCount DocParaCount DocPartTitles DocRevNumber DocSlideCount DocTemplate DocTitle DocWordCount Filename Path ShortFileName Size Write

Summary

The user who most recently edited the document The time the document was last printed The time the document was last saved The name of the manager of the document s author The number of pages with notes in a PowerPoint document The number of pages in the document The number of paragraphs in the document The names of document parts, such as worksheet names in a Microsoft Excel document or slide titles in a PowerPoint document The current version number of the document The number of slides in a PowerPoint document The name of the template used by the document The title of the document The number of words in the document The name of the document The path to the document, including the document name The 8.3-format name of the document The size of the document, in bytes The date and time the document was last modified

Add two columns, Book and Price, as shown in figure 4.14. Note that we can also specify the width of each column. We could for example specify that we wish the columns to be automatically sized according to their content, using the AutoSizeMode setting. That s all there is to it. We now have a rich collection mapped to a grid. Because you now have some knowledge of data binding of LINQ queries in web and Windows applications, let s move on to building richer examples. We ll use the data binding techniques we just showed you to write advanced queries. You ll see how to use the query operators to perform several kinds of common operations, such as projections or aggregations.

You can create multiple domains, trees, and forest by using dcpromo and the Active Directory Installation Wizard. Create multiple domains to meet security requirements, meet administrative requirements, optimize replication traffic, or retain Windows NT domains. Create multiple trees if your organization has more than one DNS name. Create multiple forests if you need to secure data or you need to isolate directory replication. In Windows Server 2003, you can now rename any domain that has domain controllers running Windows Server 2003 and move existing domains to other loca tions in the domain hierarchy if all domain functional levels in the forest have been raised to Windows Server 2003, and the forest functional level has been raised to Windows Server 2003. Use the domain rename utility (Rendom.exe) to rename or restructure a domain. You can rename domain controllers without first demoting them if the functional level of the domain to which the domain controller is joined is set to Windows Server 2003. Use the Netdom.exe: Windows Domain Manager com mand-line tool, included with the Windows Support Tools on the Windows Server 2003 Setup CD-ROM, to rename a domain controller. Operations master roles are assigned to domain controllers to perform singlemaster operations. Every Active Directory forest must have the schema master and domain naming master roles. Every domain in the forest must have the RID mas ter, the PDC emulator, and the infrastructure master roles. There are two ways to manage operations master roles: transfer and seizure.

In query expressions involving text, use the EQUALS operator when you require an exact match. For example, this query

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{prop name=docTitle} equals Queen's Gambit Declined {/prop}

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Make sure you map the columns to the result objects properties using the DataPropertyName setting, as shown in figure 4.15.

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A trust relationship is a link between two domains in which the trusting domain honors the logon authentication of the trusted domain. Windows Server 2003 supports the following types of trusts: tree-root, parent-child, shortcut, realm, external, and forest.