Testimonial

DataRelation is the ADO.NET object that represents a logical link between two tables through a common column. The DataRelation defines the parent/child relationship, but the tables and the columns remain separate entities. Once a relation has been set, you can easily access the child rows of the detail table either by using methods on the DataRow object or switching to the XML hierarchical representation. The DataRelation object looks like an in-memory INNER JOIN, but without the same redundancy of information.
Your Name: Laokimsea
E-mail Address: laokimsea@gmail.com
Posted Date: 09/05/2007
Dialog Box: Modifications Through the View What's the role of all those AllowXXX properties on the DataView object? Can I modify rows or not through a DataTable's view? A DataView is an object that provides a particular representation of the content of a given table. The DataView and the DataTable are independent objects, and the DataView simply holds a link to the parent table. The DataView doesn't cache the table, nor does it makes an internal copy of the data. The DataView is simply an object that contains some information about the way and the order in which the content of the table must be shown. The core function that you execute on a DataView is the enumeration of the items. This happens explicitly when you loop through its content or implicitly when you assign the DataView to the DataSource property of a data-bound control. When a data-bound control calls its DataBind method, the content of the data source is enumerated and the control's Items collection is properly populated. When a view is involved, the caller enumerates through the view, and the view in turn enumerates through the parent table and applies sorting expressions and filters. The AllowEdit, AllowDelete, and AllowNew Boolean properties indicate whether the DataView and the user interface associated with it allow updates, deletions, and insertions. This doesn't affect the way in which the parent table is updated. Those properties apply only to the edit operations carried out through the DataView control or a data-bound control that uses it.
Your Name: Kimsea
E-mail Address: laokim_sea@yahoo.com
Posted Date: 09/05/2007
Populating the DataSet The DataSet is a publicly creatable object, as are almost all the other ADO.NET objects. Normally, you create a DataSet with or without a custom name. However, DataSetName is the property you can use to get and set the DataSet's name. Next, you might want to set some environment attributes such as CaseSensitive and EnforceConstraints. The former determines whether string comparisons within child DataTable objects have to be case-sensitive. By default, the property returns False. dfgs f fdd
Your Name: Kimsea
E-mail Address: laokim_sea@yahoo.com
Posted Date: 09/05/2007
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Your Name: dehpckwg xbjro
E-mail Address: dehpckwg xbjro
Posted Date: 05/24/2008
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Your Name: btkluq ergxqym
E-mail Address: btkluq ergxqym
Posted Date: 05/24/2008
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we would like to thaks for submiting your commandAll the data is kept in memory and can be updated, sorted, and filtered without resorting to any server-side functionality. All database-like functionalities are implemented as in-memory features including a commit model that closely resembles the transaction model of many DBMS. You really only need to get back to the server when you want to save changes to the data source. This will raise another category of problems that I'll tackle in an upcoming column.

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