Today, when the DAL layer is compiled a project, Using System.Web is added in the code file;, it is wrong, but error message is wrong when the program is compiled. ..Server.mappath for:
Can't find the type or namespace name "httpcontext" (whether it is missing the USING instruction or assembly reference?)
Change to System.Web.httpContext.current.server.mappath ("MDBPATH"]) Still error, analysis, hand-compilation, no problem, may be due to issues caused by project compilation in VS.NET 2003 So add a reference to System.Web to the project, and compile the problem again.
This summarizes the solution to such errors as follows
1. Make sure the correct assembly reference: Make sure the assembly containing the namespace is referenced. If it is developed in Visual Studio .NET, you can go to
Item menu and click
Add a reference. in
On the .NET tab, select the assembly that contains the namespace you want to import, or
Browse to the folder containing the assembly. If you use the command line compiler, add the corresponding switch to the compile statement (
/ reference).
2, the correct namespace: Place the USING statement in the top of the code file containing the type reference, make sure to import the namespace into the project,
Such as:
Using system.Web;
If there is no using statement, fully qualify the reference to the type:
System.Web.httpContext.current.server.mappath (ConfigurationSettings.AppSettings ["MDBPATH"])
