Expression Tree not evaluating properly when ExpandoObject used

[Thirumalai Muniswmy]

I am writing an expression tree in C# for evaluating equal match and finding whether one of the property on an entity matching with some predefined constant and taking action as per the result. As I am not sure what kind of object will be an input for the expression, I used ExpandoObject and coded expression tree as per that.

When I run the code, I could not get the result as per the condition. Always it resulting false.

var dynEmp = System.Text.Json.JsonSerializer.Deserialize<ExpandoObject>("{\"Id\":1,\"Name\":\"Test Name\"}");

ParameterExpression dynpe = Expression.Parameter(typeof(object), "employee");
DynamicExpression dynme = Expression.Dynamic(CreateGetMemberBinder(typeof(object), "Id"), typeof(object), dynpe);

ConstantExpression dynconstant = Expression.Constant(1, typeof(object));

BinaryExpression dynbody = Expression.Equal(dynme, dynconstant);
var dynexpressionTree = Expression.Lambda<Func<dynamic, bool>>(dynbody, new[] { dynpe });
var dynfunc = dynexpressionTree.Compile();
var result = dynfunc(dynEmp);

Console.WriteLine(result);


The CreateGetMemberBinder method -

private static GetMemberBinder CreateGetMemberBinder(Type type, string memberName)
{
return (GetMemberBinder)Microsoft.CSharp.RuntimeBinder.Binder.GetMember(
Microsoft.CSharp.RuntimeBinder.CSharpBinderFlags.None,
memberName,
type,
new CSharpArgumentInfo[] { CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null) }
);
}


Please correct me the issue on this code.

Many Thanks, Thirumalai M

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