In this article, we will walk via some performance improvement techniques in ASP.NET Web Applications.

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How To Optimize Asp.Net Application ?

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In this article, we will walk via some performance improvement techniques in ASP.NET
Web Applications.
It’s universal that customer expects the good performance of a web application.
Basically, large-scale Web applications are deployed to load-balancing servers to
share traffic evenly across a number of application servers.
Additional application servers are added without making any further changes to the
application.
The application server might enhance Web application performance; however, there
are ways to improve performance on the developer side as well.
You can follow certain optimization techniques when you code that can reduce a lot of
performance issues. It is essential to know which parts code or code parts can be
optimized, and how you can measure improvements in performance.

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Here we share a number of optimization techniques that you can use:
Discard objects from the caller method than in the called method.
Use connection pooling such that the connections can be re-used during requirement
of future requests to the database.
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Delete white spaces and extra tags to reduce the size of your pages. Make limited
use of graphics and consider using compressed graphics.

Reduce page load times by minimizing the scripts.

Use cascading style sheets to avoid repeated sending of the same formatting
directives to the client.

Use short control names because they generate unique HTMLID names.

Minimize redundant processing by using Page.IsPostBack .

Use for each loop instead of a for loop if possible.

Avoid using ViewState to facilitate faster page loads.

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Cache the Web pages or a portion if the page is large. Use data caching for improving
the application performance instead of fetching data from a file or database.
Data is stored in the memory of Datasets hence write efficient SQL queries or
procedures that fetch only the required information.
So not use Page.DataBind. Instead, code data bind on specific controls because the
page-level method calls the DataBind method of every control on the page that
supports data binding.
Use minimal, call to DataBinder.Eval because this method uses reflection to access
the arguments that are passed in and to return the results. For example, if a page has
a table of 50 rows and 10 columns, DataBinder.Eval will be named 500 times if you
use DataBinder.Eval on each column. Instead, use clear casting offers better
performance by keeping away the cost of reflection. Cast the Container.DataItem as a
DataRowView, as shown in the following code .

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<ItemTemplate> <tr> <td><%# ((DataRowView)Container.DataItem) ["First_Name"]
%></td> <td><%# ((DataRowView)Container.DataItem) ["Last_Name"] %></td>
</tr></ItemTemplate>
You can achieve better performance with clear casting if you use a DataReader to
bind your control and use the special methods to retrieve your data. Cast the
Container.DataItem as a DbDataRecord.
<ItemTemplate> <tr> <td><%# ((DbDataRecord)Container.DataItem) .GetString(0)
%></td> <td><%# ((DbDataRecord)Container.DataItem) .GetInt(1) %></td>
</tr></ItemTemplate>

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Disable useless session states because ASP.NET Manages a session state by default
and lessens the cost in memory when you don’t use it.
For example, if your pages are fixed or when you don’t require to store information
captured in the page.
<@%Page EnableSessionState=”false”%>
make read only session state for retrieving data
<@%Page EnableSessionState =”ReadOnly”%>
Turn off tracing unless needed.
<trace enabled=”false” requestLimit=”8″ pageoutput=”false” traceMode=”SortByTime”
localOnly=”true”>
Use SqlDataReader to visit the read-only data and not DataSet.
You can return multiple result sets by using dynamic SQL, it is preferable to utilize
stored procedures to get multiple result sets

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Using gzip compression can reduce the number of bytes sent by the server. This helps
faster page loads and also cuts down on bandwidth usage.
If you got a bunch of .NET Web services running in one IIS Application and utilized by
another IIS application, the first call to Web services, in most cases, might be pretty
slow. To speed up the initial call, you can create the XmlSerializers DLL at compile
time.
Hope the above-mentioned points would help you to code at ease.
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