📄 developapps-scenarios.htm
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<title>Key Scenarios</title>
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<h1 class="dtH1">Key Scenarios</h1>
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This topic describes the most common situations developers must address when
accessing a database. Each scenario explains the task, describes a
real-world situation where such a task might arise, and includes code
demonstrating how to use EasyObjects.NET to complete the
task. The scenarios are as follows:<ul>
<li>
<a href="developapps-loading.htm">
Loading an EasyObject business object</a>. This scenario
illustrates how you can use the <b>LoadByPrimaryKey</b> method to retrieve
a single row of data, or use the <b>LoadAll</b> method to retrieve all
rows from the database table.
</li>
<li>
<a href="developapps-saving.htm">
Adding and Updating data in an EasyObject business object</a>. This scenario illustrates
how you can use the <b>AddNew</b> method to one or multiple rows to your
business object, then call the <b>Save</b> method to save the data to
the database. It also illustrates how you can update data by loading the
business object first, changing the data and then calling the <b>Save</b> method.
</li>
<li>
<a href="developapps-queries.htm">
Creating dynamic queries</a>. This scenario
illustrates how you can use<b> WhereParameters</b> and<b> </b>the <b>
Query</b> method to
create your own database-independent dynamic queries <i>without writing
SQL code</i>. If you change database stores, you do not have to change
any dynamic query code.
</li>
<li>
<a href="developapps-binding.htm">
Databinding and Looping</a>. This
scenario illustrates how you can use the <b>DefaultView</b> property to
bind your EasyObjects business objects to a databound control. This
scenario also illustrates how to loop through all the rows in the
EasyObject business object using the<b> MoveNext</b> method.
</li>
<li>
<a href="developapps-transactions.htm">
Performing Multiple Updates Within a Transaction</a>. This scenario
illustrates how you can use the <b>TransactionManager</b> class to perform multiple operations against a database,
where it is essential that either all operations succeed or none
succeed.
</li>
<li>
<a href="developapps-custom.htm">
Calling a custom stored procedure</a>. This scenario illustrates how to
call your existing stored procedures using the <b>LoadFromSql</b>
methods. This scenario is particularly important if you are
reverse-engineering an existing application.</li>
<li>
<a href="developapps-xml.htm">
Retrieving Multiple Rows as XML</a>. This scenario illustrates how you
can use the <b>ToXml</b> and <b>Serialize</b> methods to
convert the current data stored in the EasyObject business object to an XML format. </li>
</ul>
<h4 class="dtH4">See also</h4>
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