We should have good knowledge about the Web.config file, because it's a major character when we going to develop web applications using ASP.net. First, I like to give some examples "What we can do using the Web.config file"...And after I'll discuss how we going to code the examples.
Can create database connection using the Web.config file
According to the user log in system environment, we can modify the Authentication and Authorization.
We can set image path for the uploading images.
Also we can manage the lager size files, when uploading to the web server.
If the System.Net.Mail email sending, we should configure the Web.config file.
How to Create Database connection in the Web.config file
You can write following code before the <system.web> tag and inside the <Configuration> tag
<connectionStrings><add name="NameConnectionString" connectionString="Data Source= (Default);Initial Catalog=DatabaseName;User ID=Username;Password="Your Password"" providerName="System.Data.SqlClient"/>
How to manage Form authentication and the authorization in the Web.config file.
Following code demonstrate the way it can be implement.
<authentication mode="Forms"><forms loginUrl="login page url" timeout="30"></forms>
Then you should show the location which need to be restricted from anonymous users.
After the <system.web/> tag we can write following code to above purpose. It's pretty cool, isn't it..?
<location path="FolderNameAuthenticationNeed" allowOverride="true">
<deny users="?"/></authorization> </system.web>
How we should configure the Web,config file according to the E-mail sending...
After the <system.web/> we should change following changes to the Web.config file
<network host="Host name" port="25" userName="Username"password="password" />
How to set the Image path when uploading images to the web..
<appSettings> <add key="ItemImagePath" value="Specify the path to save emages"/>
How to upload a larger size file into the web server...
additionally we have to configure the Web.config file as follows.
<httpRuntime executionTimeout="90" maxRequestLength="4096" useFullyQualifiedRedirectUrl="false" minFreeThreads="8" minLocalRequestFreeThreads="4" appRequestQueueLimit="100"/>