如何使用C＃使Excel单元格成为组合框？

Question

我一直在网上搜索，但是找不到将单元格转换为组合框的方法（或者有时称为下拉菜单）？我正在使用Microsoft.Office.Interop.Excel版本14.0（运行时版本2.0.50727）。

Answer 1

这是我尝试实现的解决方案：

Excel.Application App = null;
Excel.Workbook Book = null;

Excel.Worksheet Sheet = null;

object Missing = System.Reflection.Missing.Value;

try
{
    App = new Excel.Application();
    Book = App.Workbooks.Add();

    Sheet = (Excel.Worksheet) Book.Worksheets[1];

    Excel.Range Range = Sheet.get_Range("B2", "B2");

    Range.Validation.Add(Excel.XlDVType.xlValidateList
        , Excel.XlDVAlertStyle.xlValidAlertStop
        , Excel.XlFormatConditionOperator.xlBetween
        , "Item1,Item2,Item3"
        , Type.Missing);
    Range.Validation.InCellDropdown = true;
    Range.Interior.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.FromArgb(255, 217, 217, 0)); 

    App.Visible = true;
}
finally
{
    Base.ReleaseObject(Sheet);
    Base.ReleaseObject(Book);
    Base.ReleaseObject(App);
}