A Programmer's Guide to ADO .NET in C# by Mahesh Chand PDF

By Mahesh Chand

ISBN-10: 1893115399

ISBN-13: 9781893115392

Being a programmer for years, yet new to the ADO / .NET atmosphere, this publication was once advisable. i love how it used to be designed. It was once effortless to stick with.

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The wizard also shows the available command properties, including InsertCommand, DeleteCommand, SelectCommand, and UpdateCommand (see Figure 4-28). NET Figure 4-28. The data adapter in the Properties window You can set DataAdapter properties by clicking on these properties. SqlCommand and TableMappings, for example, are important properties. A data adapter has four SqlCommand properties—SelectCommand, DeleteCommand, InsertCommand, and UpdateCommand—that all execute SQL commands on the data source.

Dialog box for generating a dataset This action adds a dataset (if you check Add This Dataset to the Designer check box) and pops up the dataset Properties dialog box (see Figure 4-47). 56 201 933ch4 3/20/02 11:03 AM Page 202 Chapter 4 Figure 4-47. A dataset’s Properties window showing a typed dataset Every dataset generated by the IDE creates an XML schema for the dataset. Figure 4-47 provides you with two hyperlinks at the bottom of the dialog: View Schema and DataSet Properties. View Schema lets you view the DataSet schema, and the DataSet Properties hyperlink lets you set the DataSet properties.

NET Figure 4-32. Data Adapter option links The Preview Data option enables you to view the DataSet schema. You can even preview the data in the DataSet by clicking the Fill button. The Data Adapter Preview dialog box looks like Figure 4-33. 40 185 933ch4 3/20/02 11:03 AM Page 186 Chapter 4 Figure 4-33. Previewing data for the data adapter The Fill Dataset button in Figure 4-33 fills data into a grid based upon the current state of the SelectCommand in the DataAdapter. Step 5: Reviewing the Source Code Now it’s time to examine the code and see what the wizard has done for you automatically.

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A Programmer's Guide to ADO .NET in C# by Mahesh Chand


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