从excel到数据表

我想从我的Excel表导出数据到数据表，但不知道如何把数据放到数据表。 有人可以帮我吗？

我的代码是：

Excel.Application xlApp = new Excel.Application(); Excel.Workbook xlWorkbook = xlApp.Workbooks.Open(userSelectedFilePath2); Excel._Worksheet xlWorksheet = xlWorkbook.Sheets[1]; Excel.Range xlRange = xlWorksheet.UsedRange; DataTable excelTb = new DataTable(); for (int i = 0; i <= xlRange.Rows.Count - 1; i++) { for (int j = 1; j <= xlRange.Columns.Count; j++) { excelTb.Columns.Add(xlRange.Cells[0,j].Value2.ToString()); foreach (DataRow extb in excelTb.Rows) { DataRow newDataRow = excelTb.NewRow(); // Here should be something to put data in DataTable } } } 

Answer 1

尝试这个：

  for (int row = 0; row < xlRange.Rows.Count; row++) { DataRow dataRow = null; if (row != 0) dataRow = excelTb.NewRow(); for (int col = 0; col < xlRange.Columns.Count; col++) { if (row == 0) //Headers { excelTb.Columns.Add(xlRange.Cells[row + 1, col + 1].Value2.ToString()); } else //Data rows { dataRow[col] = xlRange.Cells[row + 1, col + 1].Value2.ToString(); } } } 

Answer 2

如果你只需要处理xlsx和xlsm文件就可以使用epplus，它比interop快得无比快。 这是一个读取/写入excel文件的软件包。 此外，它有一个非常好的许可证，并没有任何成本。

对于你的数据表，你可以沿着这条线（vb.net代码）

  Dim tbl As New DataTable for cols = 0 to j 'you have to define the columns first tbl.Columns.Add() next for cols = 0 to j for rows = 0 to your_rowcount Dim row = tbl.NewRow 'Here is the critical part: iterate over the worksheet, and take each value from the sheet. put the value into the datatable. The datatable needs to get a new row for each worksheet.row Dim value = yourworksheet.cells(cols+1,rows+1).value row(cols)=Value next next 

Answer 3

  private void grabData(string filename) { // Clear DataTaable before generating new Table Data/ ds.Clear(); // Connection String to the previously selected file. // HDR=Yes advises that spreadsheet has columns. OleDbConnection con = new OleDbConnection( "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filename + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=1\""); // The criteria required to Build DataTable. Select specific columns //from spreadsheet where teh Site Statuse is LIVE. string strSQL = "SELECT * FROM [YOURTABLE]"; // The Command that we will use with our DataAdapter. OleDbCommand cmd = new OleDbCommand(strSQL, con); OleDbDataAdapter da = new OleDbDataAdapter(cmd); da.Fill(ds, "YourTable"); } 

Answer 4

将工作表中的数据读取到如下所示的2D对象数组中：

 //Convert from interop object to native C# object, indexed 1 to length object[,] data = (object[,])xlWorksheet.UsedRange.Value2; 

现在你可以像下面这样将一个单元添加到DataRow中：

  for (int row = 1; row < data.GetUpperBound(0); row++) { DataRow newDataRow = excelTb.NewRow(); newDataRow["AStringColumn"] = data[row,1].ToString(); newDataRow["ADoubleColumn"] = Convert.ToDouble(data[row, 2]); //repeat for each column OR replace with a column loop and use newDataRow[col] = data[row, col].ToString(); excelTb.Rows.Add(newDataRow); } 

请注意，双数组的索引从1而不是0像数组通常在C＃中。