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If you now switch to XML view, VS .NET allows you to validate the schema, and hence double-check that you haven t made a mistake (such as setting an invalid type for an element or attribute, or introducing an error when modifying the file manually). Select Schema Validate Schema. Any invalid content in the schema will be underlined and added to the Task List. If there are no errors, you ll see a No validation errors were found message at the bottom left of the window.

Summary

How Use SharePoint Manager 2007, write a code snippet to do it, use the web interface, and modify the web part from there You have a ton of options; just pick the one you like To fix the second problem, open the webconfig file, usually stored in C:\Inetpub\ wwwroot\wss\VirtualDirectories\[portnumber] In that file, locate the systemweb element and then the webParts element To the webParts element, add an attribute called enableExport="True" Then reset your web application..

Protected Sub DropDownList1_SelectedIndexChanged (ByVal sender As Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged Dim dropdownSelectedMode As String = DropDownList1.SelectedValue Dim md As WebPartDisplayMode = _ _wpmmngr.SupportedDisplayModes(dropdownSelectedMode) If Not (md Is Nothing) Then _wpmmngr.DisplayMode = md End If End Sub This code will automatically change the display mode of the Web Parts when the different values are selected from the drop-down list.

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Markup plays an important role in web applications, because one of the key tasks of such applications is to deliver web pages to client browsers We use HTML to mark up the information in a web page, and the HTML describes the structure of that page in terms of headings, paragraphs, tables, images, and so on HTML is a markup language specifically designed for describing the structure of web pages XML is also a form of markup, but it is much more generic We can use XML to describe the structure of any type of data XML, like HTML, is text-based markup It uses tags and attributes to describe the different elements of data Because XML is text-based, it s ubiquitous you can use XML techniques in any environment or language, and to allow any combination of platforms to communicate with one another In particular, in .

There is actually a third reason why you might not be able to export a web part ListViewWebParts, such as the Announcements or Calendar web part in the STS folder s defaultaspx file, cannot be exported At least that s what Microsoft wants you to believe Microsoft is sort of right Even if you use code or SharePoint Manager 2007 to set the ExportMode property for a ListViewWebPart element to All, the web part will not allow you to export it There is a perfectly good reason for this ListViewWebPart elements are tied to the underlying list and views by GUID, and the GUID is unique for each view and each list in each site Thus, exporting the web part makes no sense since you would not be able to use it on another site The thing is, I don t care what Microsoft thinks is reasonable.

NET, Microsoft has invested heavily in XML In our Friends Reunion application, we plan to allow a client application (such as an Old Classmates Society ) to be able to upload a single XML document, containing attendance details of any number of attendees When the file has been successfully uploaded, we plan to have our Friends Reunion application read XML data, interpret it, and channel it into the correct tables and fields of the database The application will be able to do that only if the uploaded XML adheres to a very specific structure Checking this conformance manually through application code would be difficult, error-prone, and difficult to maintain and evolve The W3C has created an XML language called XML Schema Definition Language for exactly this purpose, which will relieve developers from the burden of manual content verification.

8. Finally, you can test your code. Build and run the web project as shown in Figure 9-4.

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