How to Pass Multi String Message from Model to View

I have a code which loop in 2 table and collect string if any exception thrown, ever time when another exception thrown the 1 message get deleted and am using list object, how to add multi string in list and send to view?

1. foreach ( dicionary d in hashtable1)  
2. {  
3.    writer = xmlwriter.create()  
4.    string strmsg = "";  
5.    message = new List<string>  
6.    try  
7.    {  
8.       some condition   
9.    }  
10.    catch( excep ex)  
11.    {  
12.       message.add(strmsg);  
13.    }  
14. }  
15. foreach ( dicionary d in hashtable2)  
16. {  
17.    string strmsg2 = "";  
18.    message2 = new List<string>  
19.    try  
20.    {  
21.       some condition  
22.    }  
23.    catch( excep ex)  
24.    {  
25.       message2.add(strmsg2);  
26.    }  
27. }    
28. writer.Flush();  
29. writer.Close();  

I can see the strmsg & strmsg2 with value but when it come to close it get delete. how to added both table message as one list and send to view page?