How to get a String value from web.config in MVC4

Question

I want to get a logFilePath value which I gave by hardcode in to appSettings. I am trying to reach the key value by

System.Configuration.Configuration rootWebConfig1 = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration(null);
System.Configuration.KeyValueConfigurationElement customSetting = rootWebConfig1.AppSettings.Settings["azureLogUrl"];
string pathValue =  customSetting.Value;

but I am getting null reference exception . How can I get the value from web.config file?

juhan_h · Accepted Answer · 2013-08-28 09:39:10Z

61

Use:

string pathValue = ConfigurationManager.AppSettings["azureLogUrl"];

You do not need to cast this to string and check for nulls because documentation states:

Values read from the appSettings element of the Web.config file are always of type String. If the specified key does not exist in the Web.config file, no error occurs. Instead, an empty string is returned.

edited Aug 28, 2013 at 9:39

answered Aug 28, 2013 at 9:16

juhan_h

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1 Comment

redwards510 Over a year ago

need to add using System.Configuration;

Srinivas · Accepted Answer · 2013-08-28 09:24:52Z

5

You can get the value from web.config like this :

string pathValue = WebConfigurationManager.AppSettings["azureLogUrl"].ToString();

answered Aug 28, 2013 at 9:24

Srinivas

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