Returning SQL version using C# -

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i'm struggling return sql version using c#, i'm new sql programming great. i'm getting various errors below latest attempt.

private void buttonok_click(object sender, system.eventargs e) {     string strsqlversion = sqlversion();     messagebox.show(strsqlversion); }  private void sqlversion(string sqlver) {     odbcconnection conn = null;     try     {         conn = getconnection(comboboxdatabase.text);         string strsql = "select @@version";         conn.open();         odbccommand cmd = new odbccommand(strsql, conn);         string returnvalue = (string)cmd.executescalar();         return returnvalue;     }     catch (exception ex){ }         {         conn.close();     } }

what about:

private string sqlversion() {     string version = "";     try     {         using (odbcconnection cn = new odbcconnection("..."))         using (odbccommand cm = cn.createcommand())         {             cn.open();             cm.commandtext = "select @@version";             version = cm.executescalar() string;         }     }     catch (odbcexception) { }     return version; }

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