打开excel文件时提示“重载open方法未获得1参数”
2736 2003-09-12 11:25:11 object o=System.Reflection.Missing.Value;
Excel.Application excelapp=new Excel.Application();
Excel.Workbook wkbook=excelapp.Workbooks.Open(@"C:\temp\a.xls");
excelapp.Visible=true;
//wkbook.PrintPreview(true);//预览
wkbook.PrintOut(o,o,o,o,o,o,o,o);//打印