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Component Object Model   COM




COM                  .NET Framework
        .NET                          COM   Visual
Basic   ASP
Excel.Application excelApp = new Excel.Application();
Excel.Workbook excelBook = (Excel.Workbook)(oXls.Workbooks.Open(@"C:tmp
dummy.xls",...));

Excel.Worksheet excelSheet = (Excel.Worksheet)excelBook.Sheets[1];

Excel.Range      excelRange = (Excel.Range)excelSheet.Cells[1,1];

String name = excelRange.Text.ToString();
try {
     excelCells = excelSheet.Cells;
     try {
         excelRange = (Excel.Range)excelCells[1,1];
         msg = excelRange.Text.ToString();
     } finally {
         Marshal.ReleaseComObject(excelRange);
     }
} finally {
     Marshal.ReleaseComObject(excelCells);
}
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現在のCOM事情

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  • 4. Component Object Model COM COM .NET Framework .NET COM Visual Basic ASP
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  • 18. Excel.Application excelApp = new Excel.Application(); Excel.Workbook excelBook = (Excel.Workbook)(oXls.Workbooks.Open(@"C:tmp dummy.xls",...)); Excel.Worksheet excelSheet = (Excel.Worksheet)excelBook.Sheets[1]; Excel.Range excelRange = (Excel.Range)excelSheet.Cells[1,1]; String name = excelRange.Text.ToString();
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  • 26. try { excelCells = excelSheet.Cells; try { excelRange = (Excel.Range)excelCells[1,1]; msg = excelRange.Text.ToString(); } finally { Marshal.ReleaseComObject(excelRange); } } finally { Marshal.ReleaseComObject(excelCells); }