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//输入表格地址返回dataset 查询的是excel
public DataSet ExcelToDS(string Path)
{
string connStr;
if (Path == ".xls")
connStr = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + Path + ";" + ";Extended Properties=\"Excel 8.0;HDR=YES;IMEX=1\"";
else
connStr = "Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source=" + Path + ";" + ";Extended Properties=\"Excel 12.0;HDR=YES;IMEX=1\"";
OleDbConnection conn = new OleDbConnection(connStr);
conn.Open();
string strExcel = "";
OleDbDataAdapter myCommand = null;
DataSet ds = null;
strExcel = "select * from [sheet1$]";
myCommand = new OleDbDataAdapter(strExcel, connStr);
ds = new DataSet();
myCommand.Fill(ds, "table1");
return ds;
}