C 中Excel的匯入匯出

重點：如果計算機沒裝excel，則必須安裝accessdatabaseengine_32.exe或者accessdatabaseengine_64.exe引擎，這樣電腦就安裝excel環境，匯入匯出就可以執行而不報錯了。（我的資源有這兩個檔案）

//button匯出

private void btnserch_click(object sender, eventargs e)
+ "\\體檢結果.xls");
"匯出成功！ " + this.btnserch.text + "\\體檢結果.xls"); 
}//button匯入
private void ******button1_click(object sender, eventargs e)
//對原有資料清空
grd.datasource = null;
grv.columns.clear();
grd.mainview.populatecolumns();
openfiledialog openfile = new openfiledialog();
if (openfile.showdialog() == dialogresult.ok)
}

using system;

using system.collections.generic;
using system.linq;
using system.text;
using system.data;
using system.windows.forms;
using system.data.oledb;
using system.io;
namespace utils
); //得到所有sheet的名字
string firstsheetname = sheetsname.rows[0][2].tostring(); //得到第乙個sheet的名字
string sql = string.format("select * from ", firstsheetname); //查詢字串
//string sql = string.format("select * from where [日期] is not null", firstsheetname); //查詢字串
oledbdataadapter ada = new oledbdataadapter(sql, connstring);
dataset set = new dataset();
ada.fill(set);
datatable dt = new datatable();
if (set.tables[0] != null && set.tables[0].rows.count > 0)
for (int i = 1; i < set.tables[0].rows.count; i++)
}return dt;}}
catch (exception)
}public const string oledbconnstring = "provider = microsoft.ace.oledb.12.0 ; data source = ;extended properties='excel 8.0;hdr=yes;imex=1;'"; //excel
/// /// 獲取excel檔案中的資訊，儲存到乙個datatable中 
/// 
/// 檔案路徑 
/// 返回生成的datatable 
public static datatable getexceltable(string path)
]", dt.rows[0]["table_name"]);
oledbdataadapter oleda = new oledbdataadapter(selsqlstr, conn);
oleda.fill(dt1);
}conn.close();
return dt1;
}catch (exception ex)
}/// /// 將excel匯入dataset
/// 
/// 檔案路徑
/// 頁名
/// 如果返回null表示錯誤
public static dataset excelttods(string path, string sheetname, string officeversion)
strexcel = "select * from [" + sheetname + "$]";
tryfinally
}/// /// 讀取excle檔案中的表單名稱，在返回的table中欄位名稱為"table_name"
/// 
/// excal檔案路徑
/// exca版本號
/// 
public static datatable getexcelsheetnames(string file, string officeversion)
tryfinally}}}

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