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Elaborating error message when no startup is specified

This commit is contained in:
John Luo 2016-01-12 00:47:18 -08:00
parent 317c9d0e80
commit d422201e01
1 changed files with 4 additions and 1 deletions
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5
src/Microsoft.AspNet.Hosting/Startup/StartupLoader.cs
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@ -43,7 +43,10 @@ namespace Microsoft.AspNet.Hosting.Startup
var environmentName = _hostingEnv.EnvironmentName;
if (string.IsNullOrEmpty(startupAssemblyName))
{
throw new ArgumentException("Value cannot be null or empty.", nameof(startupAssemblyName));
throw new ArgumentException(
string.Format("A startup method, startup type or startup assembly is required. If specifying an assembly, '{0}' cannot be null or empty.",
nameof(startupAssemblyName)),
nameof(startupAssemblyName));
}
var assembly = Assembly.Load(new AssemblyName(startupAssemblyName));