exec what is that for within a sqlstament using with executenonequery?

Hello,

to create a table for an mssql server, using ADO.net, I can make it with or without exec:

Code:

---

string sqlstament = "CREATE TABLE [dbo]. newTable" +
                " ([RID][int] NOT NULL PRIMARY KEY CLUSTERED, [Contact][nvarchar](3) NULL," +
                "[Company][nvarchar](40) NULL) ON [PRIMARY]";
mySQlCommand.Commandtext = sqlstament;
mySQlCommand.ExecuteNonQuery;

---

or with 'exec',

Code:

---

string sqlstament = "EXEC ('CREATE TABLE [dbo]. newTable" +
                " ([RID][int] NOT NULL PRIMARY KEY CLUSTERED, [Contact][nvarchar](3) NULL," +
                "[Company][nvarchar](40) NULL) ON [PRIMARY]')";

mySQlCommand.Commandtext = sqlstament;
mySQlCommand.ExecuteNonQuery();

---

both works fine.
But I have no idea what I win if I use exec?

Exec ist a keyword to construct the sql-statement with parameters, like here:
"EXEC ('CREATE TABLE ' + @myTable + '( Yourfields')";

In that case you the sqlcommand needs to have :
myCmd.Parameters.AddWithValue("@myTable", SqlDbType.Text).Value = strtblName;