Question

I have created an expression like:

expression = x => x.CustomerName.StartsWith(comboParams.ParamValueText, true, null);  

I would like access customer name as generic something like this:

expression = x => x["CustomerName"] and access the StartsWith function

I have already tried code such as

expression x => x.GetType().GetProperty("CustomerName").Name.StartsWith(comboParams.ParamValueText, true, null); --> it doesn't seem to work :(

Is there a way to accomplish this task. I’m making this to have a common implementation for the expression, maybe I’ll create a function for this and just accept the string. Thanks!

Answer 1

The problem with your code is that x.GetType().GetProperty("CustomerName").Name will return the name of the property not the value of it.

You need the following code.

expression x => x.GetType().GetProperty("CustomerName")
                           .GetValue(x, null)
                           .ToString()
                           .StartsWith(comboParams.ParamValueText, true, null);