var parameters = string.Empty; using (StreamReader r = new StreamReader("LogicApp.parameters.json")) { parameters = r.ReadToEnd(); } using (StreamReader r = new StreamReader("LogicApp.json")) { armTemplate = r.ReadToEnd(); } new TemplateDeployment("test-dep", new TemplateDeploymentArgs { ParametersBody= parameters, ResourceGroupName = resourceGroup, DeploymentMode = "Incremental", TemplateBody = armTemplate });

Just a note that you can use

File.ReadAllText

instead of

StreamReader

. It's a bit cleaner.