c#连接excel示例分享

string fileext = path.getextension(excelpath);
string conn = "";
if (fileext == ".xls")
{
    conn = "provider = microsoft.jet.oledb.4.0 ; data source =" + excelpath + ";extended properties='excel 8.0;hdr=yes;imex=1'";
}
else
{
    conn = "provider = microsoft.ace.oledb.12.0 ; data source =" + excelpath + ";extended properties='excel 12.0;hdr=yes;imex=1'";
}

03和07、10等版本的引擎不同

03是microsoft.jet.oledb.4.0

07及以上是microsoft.ace.oledb.12.0

并且microsoft.ace.oledb.12.0引擎需要一个文件，下载安装：http://www.microsoft.com/zh-cn/download/details.aspx?id=23734