c#讀取excel,
Provider根據實際EXCEL的版本來設置,推薦使用ACE接口來讀取。需要Access database Engine。
注意修改注冊表以下兩項的值為0。否則導入EXCEL當單元格內字符長度超過255會發生截斷現象!!!
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\12.0\AccessConnectivity Engine\Engines\Excel\TypeGuessRows
64位系統下
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Office\12.0\Access Connectivity Engine\Engines\Excel\ TypeGuessRows
看到論壇裡面不斷有人提問關於讀取excel和導入excel的相關問題。閒暇時間將我所知道的對excel的操作加以總結,現在共享大家,希望給大家能夠給大家帶了一定的幫助。
另外我們還要注意一些簡單的問題1.excel文件只能存儲65535行數據,如果你的數據大於65535行,那麼就需要將excel分割存放了。2.關於亂碼,這主要是字符設置問題。
1.加載Excel(讀取excel內容)返回值是一個DataSet
[csharp] view plaincopy
- //加載Excel
- public static DataSet LoadDataFromExcel(string filePath)
- {
- try
- {
- string strConn;
- strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filePath + ";Extended Properties='Excel 8.0;HDR=False;IMEX=1'";
- OleDbConnection OleConn = new OleDbConnection(strConn);
- OleConn.Open();
- String sql = "SELECT * FROM [Sheet1$]";//可是更改Sheet名稱,比如sheet2,等等
-
- OleDbDataAdapter OleDaExcel = new OleDbDataAdapter(sql, OleConn);
- DataSet OleDsExcle = new DataSet();
- OleDaExcel.Fill(OleDsExcle, "Sheet1");
- OleConn.Close();
- return OleDsExcle;
- }
- catch (Exception err)
- {
- MessageBox.Show("數據綁定Excel失敗!失敗原因:" + err.Message, "提示信息",
- MessageBoxButtons.OK, MessageBoxIcon.Information);
- return null;
- }
- }
2.寫入Excel內容,參數:excelTable是要導入excel的一個table表
[csharp] view plaincopy
- public static bool SaveDataTableToExcel(System.Data.DataTable excelTable, string filePath)
- {
- Microsoft.Office.Interop.Excel.Application app =
- new Microsoft.Office.Interop.Excel.ApplicationClass();
- try
- {
- app.Visible = false;
- Workbook wBook = app.Workbooks.Add(true);
- Worksheet wSheet = wBook.Worksheets[1] as Worksheet;
- if (excelTable.Rows.Count > 0)
- {
- int row = 0;
- row = excelTable.Rows.Count;
- int col = excelTable.Columns.Count;
- for (int i = 0; i < row; i++)
- {
- for (int j = 0; j < col; j++)
- {
- string str = excelTable.Rows[i][j].ToString();
- wSheet.Cells[i + 2, j + 1] = str;
- }
- }
- }
-
- int size = excelTable.Columns.Count;
- for (int i = 0; i < size; i++)
- {
- wSheet.Cells[1, 1 + i] = excelTable.Columns[i].ColumnName;
- }
- //設置禁止彈出保存和覆蓋的詢問提示框
- app.DisplayAlerts = false;
- app.AlertBeforeOverwriting = false;
- //保存工作簿
- wBook.Save();
- //保存excel文件
- app.Save(filePath);
- app.SaveWorkspace(filePath);
- app.Quit();
- app = null;
- return true;
- }
- catch (Exception err)
- {
- MessageBox.Show("導出Excel出錯!錯誤原因:" + err.Message, "提示信息",
- MessageBoxButtons.OK, MessageBoxIcon.Information);
- return false;
- }
- finally
- {
- }
- }
轉載的朋友請一定注明出處謝謝!http://blog.csdn.net/gisfarmer/