Replace sp_msforeachtable With the CLR C#

In a previous post I create a CLR stored procedure in VB.NET to replace the undocumented system stored procedure sp_msforeachtable.  As promised here is the C# code.  I am still working on reacquainting myself with C based syntax so please feel free to point out any errors or performance issues.
using System; using System.Data; using System.Data.SqlClient; using System.Data.SqlTypes; using Microsoft.SqlServer.Server; public partial class StoredProcedures
{
    [Microsoft.SqlServer.Server.SqlProcedure]
    public static void clr_foreach_table(SqlString command, SqlString type)
    { //Create the output that will be used to return erros that are caught in the upcoming code
      SqlPipe  output  = SqlContext.Pipe;
       try
          {
              SqlConnection conn = new SqlConnection("context connection=true");
              SqlCommand cmd = conn.CreateCommand(); //Create a string that will hold the query with the replaced question mark holding the table and/or view
   //Dim foreach As String = Nothing
    switch (type.ToString().ToUpper())
    {
   case "*":
       cmd.CommandText = "SET NOCOUNT ON SELECT TABLE_SCHEMA + '.' + TABLE_NAME FROM INFORMATION_SCHEMA.TABLES";
       break;
   case "T":
       cmd.CommandText = "SET NOCOUNT ON SELECT TABLE_SCHEMA + '.' + TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE'";
       break;
   case "V":
       cmd.CommandText = "SET NOCOUNT ON SELECT TABLE_SCHEMA + '.' + TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'VIEW'";
       break;
    }
    conn.Open();
    SqlDataAdapter da = new SqlDataAdapter(cmd);
    DataTable dt = new DataTable();
              da.Fill(dt);
              da.Dispose();
              conn.Close();
              conn.Dispose();
              int counter = dt.Rows.Count-1;
             while (counter >= 0)
             { //A new context connection is created as the previous has been used with a different command and then disposed
   SqlConnection cn = new SqlConnection("context connection=true");
   try
    { //Replace the question mark with the table/view name and assign the new query to the foreach variable
//foreach = command.ToString.Replace("?", dt.Rows(counter)(0).ToString)
//Create a sql command that is passed the foreach string and the new connection
        SqlCommand sp_command = new SqlCommand(command.ToString().Replace("?", dt.Rows[counter][0].ToString()), cn);
       cn.Open();
       SqlContext.Pipe.ExecuteAndSend(sp_command);
       cn.Close();
   }
    catch (Exception ex)
    {
       //Catch any error(s) and then use the output to pipe this to the messages of SSMS specifying that it is
       //in the inner Try block and also pass the query being executed back to troubleshoot
        output.Send("Inner Try " + ex.Message.ToString() + command.ToString().Replace("?", dt.Rows[counter][0].ToString()));
   }
    finally
    {
       cn.Close();
       counter -= 1;
   }
      }  
        dt.Dispose();
          }      
                     catch (Exception ex)
    { //Catch any error(s) and then use the output to pipe this to the messages of SSMS specifying that it is
//in the outer Try block
       output.Send("Outer Try " + ex.Message.ToString());
   }
        finally
                 {
            }
          }
   };