C#中读取Excel文件 老是出现System._ComObject 怎么回事
读取excel单元格A1，然后在listview中显示，老是显示“System._ComObject ”怎么回事？

代码见下，这样写对吗？

Microsoft.Office.Interop.Excel.Application ExcelObj = new Microsoft.Office.Interop.Excel.ApplicationClass();
ExcelObj.Visible = false;
Microsoft.Office.Interop.Excel.Workbook theWorkbook=ExcelObj.Workbooks.Open(fileNamePath[i],Type.Missing, Type.Missing,Type.Missing, Type.Missing, Type.Missing,Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);


Microsoft.Office.Interop.Excel.Sheets sheets = theWorkbook.Worksheets;
Microsoft.Office.Interop.Excel.Worksheet xsheet=Microsoft.Office.Interop.Excel.Worksheet)sheets.get_Item(1);
Microsoft.Office.Interop.Excel.Range xrange = xsheet.get_Range( "A1 ", Type.Missing);

listView1.Items.Add(string.Format( "{0:f} ", xrange[1,1]));




[解决办法]
跟踪检查获取sheets、xsheet、xrange 是否为空