C# 如何在Excel中获取要展开到多行的值？

我需要放置一个跨四行的文本值。我认为/希望这会奏效：

private int curDescriptionTopRow = 8;
. . .
private void AddDescription(String desc)
{
    int curDescriptionBottomRow = curDescriptionTopRow + 3;

    _xlSheet.Range[_xlSheet.Cells[curDescriptionTopRow, 1], _xlSheet.Cells[curDescriptionBottomRow, 1]].Font.Bold = true;
    _xlSheet.Range[_xlSheet.Cells[curDescriptionTopRow, 1], _xlSheet.Cells[curDescriptionBottomRow, 1]].VerticalAlignment = Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignCenter;
    _xlSheet.Range[_xlSheet.Cells[curDescriptionTopRow, 1], _xlSheet.Cells[curDescriptionBottomRow, 1]].Value2 = desc;

    curDescriptionTopRow = curDescriptionTopRow + 4;
}

我需要在单元格A8-A11（A列，第8-11行）中垂直居中显示第一个描述

上面的代码在所有四行中添加描述，而不是在四行中只添加一次

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如何防止描述的三个冗余外观？

定义然后合并范围：

private int curDescriptionTopRow = 8;
. . .
private void AddDescription(String desc)
{
    int curDescriptionBottomRow = curDescriptionTopRow + 3;

    var range =
        _xlSheet.Range[_xlSheet.Cells[curDescriptionTopRow, 1], _xlSheet.Cells[curDescriptionBottomRow, 1]];
    range.Merge();

    range.Font.Bold = true;
    range.VerticalAlignment = Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignCenter;
    range.Value2 = desc;
}