This is a sample code that can be used to find references using Roslyn version Microsoft.CodeAnalysis 1.0.0

ReferenceFinder.cs

    class ReferenceFinder
    {
        public void Find(string methodName)
        {

            string solutionPath = @"C:\Users\achoudhary\Documents\Visual Studio 2013\Projects\ConsoleForEverything\ConsoleForEverything.sln";
            var msWorkspace = MSBuildWorkspace.Create();

            List<ReferencedSymbol> referencesToMethod = new List<ReferencedSymbol>();
            Console.WriteLine("Searching for method \"{0}\" reference in solution {1} ", methodName, Path.GetFileName(solutionPath));
            ISymbol methodSymbol = null;
            bool found = false;

            //You must install the MSBuild Tools or this line will throw an exception.

            var solution = msWorkspace.OpenSolutionAsync(solutionPath).Result;
            foreach (var project in solution.Projects)
            {
                foreach (var document in project.Documents)
                {
                    var model = document.GetSemanticModelAsync().Result;

                    var methodInvocation = document.GetSyntaxRootAsync().Result;
                    InvocationExpressionSyntax node = null;
                    try
                    {
                        node = methodInvocation.DescendantNodes().OfType<InvocationExpressionSyntax>()
                         .Where(x => ((MemberAccessExpressionSyntax)x.Expression).Name.ToString() == methodName).FirstOrDefault();

                        if (node == null)
                            continue;
                    }
                    catch(Exception exception)
                    {
                        // Swallow the exception of type cast. 
                        // Could be avoided by a better filtering on above linq.
                        continue;
                    }

                    methodSymbol = model.GetSymbolInfo(node).Symbol;
                    found = true;
                    break;
                }

                if (found) break;
            }

            foreach (var item in SymbolFinder.FindReferencesAsync(methodSymbol, solution).Result)
            {
                foreach (var location in item.Locations)
                {
                    Console.ForegroundColor = ConsoleColor.Green;
                    Console.WriteLine("Project Assembly -> {0}", location.Document.Project.AssemblyName);
                    Console.ResetColor();
                }

            }

            Console.WriteLine("Finished searching. Press any key to continue....");
        }
    }
}

Could you possibly review my code at
http://stackoverflow.com/questions/35437644/how-can-i-have-all-references-of-a-method-in-roslyn-method-is-called-by-other-c

? I followed your code but it does not work, also References could not be founded in entire solution

Invoking SymbolFinder.FindReferencesAsync(methodSymbol, solution).Result throws an exception An item with the same key has already been added.

Microsoft.CodeAnalysis version="2.6.1"

Can we get line number from this method