Esempio n. 1
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        /// <summary>
        /// Gets a View object representing the query specified by a SQL string.
        /// </summary>
        /// <param name="sqlFormat">SQL query string, which may contain format items</param>
        /// <param name="args">Zero or more objects to format</param>
        /// <returns>A View object representing the query specified by a SQL string</returns>
        /// <exception cref="BadQuerySyntaxException">the SQL syntax is invalid</exception>
        /// <exception cref="InvalidHandleException">the Database handle is invalid</exception>
        /// <remarks><p>
        /// The <paramref name="sqlFormat"/> parameter is formatted using <see cref="String.Format(string,object[])"/>.
        /// </p><p>
        /// The View object should be <see cref="InstallerHandle.Close"/>d after use.
        /// It is best that the handle be closed manually as soon as it is no longer
        /// needed, as leaving lots of unused handles open can degrade performance.
        /// </p><p>
        /// Win32 MSI API:
        /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msidatabaseopenview.asp">MsiDatabaseOpenView</a>
        /// </p></remarks>
        public View OpenView(string sqlFormat, params object[] args)
        {
            if (string.IsNullOrWhiteSpace(sqlFormat))
            {
                throw new ArgumentNullException("sqlFormat");
            }

            string sql = (args == null || args.Length == 0 ? sqlFormat :
                          String.Format(CultureInfo.InvariantCulture, sqlFormat, args));
            int  viewHandle;
            uint ret = RemotableNativeMethods.MsiDatabaseOpenView((int)this.Handle, sql, out viewHandle);

            if (ret != 0)
            {
                throw InstallerException.ExceptionFromReturnCode(ret);
            }

            return(new View((IntPtr)viewHandle, sql, this));
        }