WebConfigurationManager

Question

I'm working on C# 2010. My website is unable to run due this error:

The name 'WebConfigrationManager' does not exist in the current context.

Although I've included using System.Web.Configuration; , the line of code the error points to is this:

String connectionString = WebConfigrationManager.ConnectionStrings["costr"].ConnectionString;

Answer 1

这已经存在于system.web.dll中，只需使用System.Web.Configuration添加名称空间

Answer 2

Am I the only one noticing that you misspelled WebConfigurationManager?

WebConfigrationManager

That might be one culprit.

Answer 3

添加System.Configuration参考，然后using System.Configuration

Answer 4

I believe that that class resides in System.Web. At least in .Net 2.0 it does.

Add an reference to that an try again.

Answer 5

只需添加名称空间：

using System.Web.Configuration;

Answer 6

您应该参考System.Web

Answer 7

Use

 string cnStr=System.Configuration.ConfigurationManager.ConnectionStrings["costr"].ConnectionString;

Or

string cnStr=System.Web.Configuration.WebConfigurationManager.ConnectionStrings["constr"].ConnectionString;