CODEWITHSUNDEEP
entity-frameworkc#-4.0entity-framework-migrations
Zin Min
Zin Min

Reputation: 4695

How to read a file content from EF Configuration.cs file?

I am using EF 6 Code-base migration. I want to read the file from Configuration.cs Seed() method to insert as default data. I am using HostingEnvironment.MapPath() as below:

string _homeContent = System.IO.File.ReadAllText( HostingEnvironment.MapPath(@"~/Data/DefaultContents/Home.html"));

But HostingEnvironment.MapPath return null value when I run the Update-database command from Package-Management Console.

Running Seed method.

System.ArgumentNullException: Value cannot be null.

Parameter name: path at System.IO.File.ReadAllText(String path)

Kindly advise how to read the physical file from Configuration.cs Seed() method.

Upvotes: 1

Views: 576

Answers (1)

Zin Min
Zin Min

Reputation: 4695

May I answer by myself.

Server.MapPath and HostingEnvironment.MapPath is not available in this time because HttpContext object is not ready yet.

AppDomain.CurrentDomain.BaseDirectory return "..\your project directory\bin"

E.g. C:\YourSolutionDirectory\YourProjectDirectory\bin

But we need to go up from "bin" folder, so that using Path.Combine() method and get exact file path.

string homeFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "..", @"Data\DefaultContents\Home.html");

Result: C:\YourSolutionDirectory\YourProjectDirectory\Data\DefaultContents\Home.html

Upvotes: 2

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