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How to save or retrive value from Web.config file in Asp.net(c#).



Here I will explain how to store or retrive value from Web.config file.
Web.config
<pre class="brush:html;first-line:10">
<configuration>
 <appSettings>
      <add key="Value" value="" />
 </appSettings>
</configuration>
</pre>

Save Value in Web.Config

<pre class="brush:html;first-line:10">
Configuration configuration = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~");
configuration.AppSettings.Settings["Value"].Value = "Nikhil Sangani";
configuration.Save();
</pre>

Retrive Value from Web.Config

<pre class="brush:html;first-line:10">
string value = ConfigurationSettings.AppSettings["Value"].ToString();

</pre>
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