How to set CommandTimeout for DbContext?

var ctx = new DbContext();
ctx.Database.CommandTimeout = 120;

It will work with your method.

Or subclass it (from msdn forum)

public class YourContext : DbContext
{
  public YourContext()
    : base("YourConnectionString")
  {
    // Get the ObjectContext related to this DbContext
    var objectContext = (this as IObjectContextAdapter).ObjectContext;

    // Sets the command timeout for all the commands
    objectContext.CommandTimeout = 120;
  }
}