显示第一列的数据！本人水平一般，有错就当参考！  

             Excel.Application xApp = new Excel.Application();

            xApp.Visible = false;

            Excel.Workbook xBook = xApp.Workbooks._Open(@"D:\test.xls",

            Missing.Value, Missing.Value, Missing.Value, Missing.Value

            , Missing.Value, Missing.Value, Missing.Value, Missing.Value

            , Missing.Value, Missing.Value, Missing.Value, Missing.Value);

            Excel.Worksheet xSheet = (Excel.Worksheet)xBook.Sheets[1];

            for (int row = 1; row < 4; ++row)

            {

                    Excel.Range rng2 = (Excel.Range)xSheet.Cells[row, 1];

                   lineListBox.Items.Add(Convert.ToString(rng2.Value.ToString()));   

            }

           xApp.Quit();