C# 怎样读写EXCEL文件
其他回答(5)
0
一直用这个串。
Code
sConnString = "Provider=Microsoft.ACE.OLEDB.12.0;data source=" + dataFile + ";Extended Properties='Excel 12.0 Xml;HDR=YES'";
try
{
m_connExcel = new OleDbConnection(sConnString);
if (m_connExcel != null)
{
m_connExcel.Open();
fRet = true;
}
}
catch (Exception e)
{
fRet = false;
Trace.WriteLine("COleDbExcelWrapper.Open: Open excel file failed! " + e.Message);
}
0
DataSet ds = new DataSet();
OleDbCommand oleCommand = new OleDbCommand("SELECT * FROM [Sheet1$]", new OleDbConnection(EXCELConnString + Path));
OleDbDataAdapter oleAdapter = new OleDbDataAdapter(oleCommand);
oleAdapter.Fill(ds, "[Sheet1$]");
// 数据绑定
return ds.Tables[0];
这是把读取excel文件的方式。读入dataset内后，怎么操作就省略了。
0
string strCon = " Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source =" + addr + ";Extended Properties=Excel 8.0";///建立连接,地址为str传递的地址
OleDbConnection myConn = new OleDbConnection(strCon);
string strCom = " SELECT * FROM [sheet1$]";///SQL操作语句,就是说:取得所有数据从Sheet1
myConn.Open();
OleDbDataAdapter myCommand = new OleDbDataAdapter(strCom, myConn);
myDataSet = new DataSet();///建立新的数据集myDataSet
myCommand.Fill(myDataSet, "[sheet1$]");///填充数据集
myConn.Close();
//读取
String str;
str=myDataSet.Tables[0].Rows[0][0].ToString();
return str;
0
#region 最简单的导出Excel
public void CreateExcel(DataTable _table, string FileName)
{
//FileName = Server.UrlEncode(FileName);
HttpResponse response = Page.Response;
response.Clear();
response.Buffer = true;
response.Charset = "GB2312";
response.HeaderEncoding = System.Text.Encoding.GetEncoding("GB2312");
response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
response.AddHeader("Content-Disposition", "attachment;filename=" + FileName);
response.AddHeader("Content-Type", "application/octet-stream;charset=GB2312");
response.ContentType = "application/ms-excel";
string ls_item = "";
ls_item = "编号\t险种\t保单号\t手续费\t手续费率\t佣金\t备注\t分组序号\n";
response.Write(ls_item);
ls_item = "";
int i = 1;
foreach (DataRow row in _table.Rows)
{
ls_item = i.ToString() + "\t" + row[3] + "\t" + row[4] + "\t" + row[7] + "\t" + row[8] + "\t" + row[9] + "\t" + row[10] + "\t" + i.ToString() + "\n";
response.Write(ls_item);
i++;
}
//写缓冲区中的数据到HTTP头文件中
response.Flush();
response.Clear();
response.End();
}
#endregion
#region 引用了OWC11组件，比较方便，好控制
private void ExpoertExcel(DataTable _table)
{
//请在项目中引用OWC11(COM组件)
OWC11.SpreadsheetClass xlsheet = new OWC11.SpreadsheetClass();
////合并单元格
//xlsheet.get_Range(xlsheet.Cells[1, 1], xlsheet.Cells[1, 8]).set_MergeCells(true);
//xlsheet.ActiveSheet.Cells[1, 1] = "保险劳务费";
////字体加粗
//xlsheet.get_Range(xlsheet.Cells[1, 1], xlsheet.Cells[1, 8]).Font.set_Bold(true);
////单元格文本水平居中对齐
//xlsheet.get_Range(xlsheet.Cells[1, 1], xlsheet.Cells[1, 8]).set_HorizontalAlignment(OWC11.XlHAlign.xlHAlignCenter);
////设置字体大小
//xlsheet.get_Range(xlsheet.Cells[1, 1], xlsheet.Cells[1, 8]).Font.set_Size(14);
//设置列宽
xlsheet.get_Range(xlsheet.Cells[1,1], xlsheet.Cells[1, 1]).set_ColumnWidth(5);
xlsheet.get_Range(xlsheet.Cells[1, 2], xlsheet.Cells[1,2]).set_ColumnWidth(12);
xlsheet.get_Range(xlsheet.Cells[1, 3], xlsheet.Cells[1, 3]).set_ColumnWidth(25);
xlsheet.get_Range(xlsheet.Cells[1, 4], xlsheet.Cells[1, 4]).set_ColumnWidth(15);
xlsheet.get_Range(xlsheet.Cells[1, 5], xlsheet.Cells[1, 5]).set_ColumnWidth(10);
xlsheet.get_Range(xlsheet.Cells[1, 6], xlsheet.Cells[1, 6]).set_ColumnWidth(15);
xlsheet.get_Range(xlsheet.Cells[1, 7], xlsheet.Cells[1, 7]).set_ColumnWidth(10);
xlsheet.get_Range(xlsheet.Cells[1, 8], xlsheet.Cells[1, 8]).set_ColumnWidth(8);
//设置行高
xlsheet.get_Range(xlsheet.Cells[1, 1], xlsheet.Cells[_table.Rows.Count, 8]).set_RowHeight(20);
//画边框线
xlsheet.get_Range(xlsheet.Cells[1, 1], xlsheet.Cells[_table.Rows.Count, 8]).Borders.set_LineStyle(OWC11.XlLineStyle.xlContinuous);
//设置字体大小
xlsheet.get_Range(xlsheet.Cells[1, 1], xlsheet.Cells[_table.Rows.Count, 8]).Font.set_Size(10);
//写入数据 (这里可根据需要由DS生成)
int i = 1,j=0;
int groupID = 0;
double t1 = 0.0, t2 = 0.0;
foreach (DataRow row in _table.Select("佣金<1333 and 险种<>''", "佣金 desc")) //注意写入数据时,必须从第一行开始写EXCEL里没有第"0"行
{
if (j % 10 == 0)
{
t1 = 0.0;
t2 = 0.0;
SetTitle(xlsheet, i);
i++; i++; groupID++;
}
xlsheet.ActiveSheet.Cells[i, 1] = j%10+1;
xlsheet.ActiveSheet.Cells[i, 2] = row["险种"];
xlsheet.ActiveSheet.Cells[i, 3] = row["保单号"].ToString()+" ";
xlsheet.ActiveSheet.Cells[i, 4] = row["手续费"];
xlsheet.ActiveSheet.Cells[i, 5] = row[8];//"手续费率"
xlsheet.ActiveSheet.Cells[i, 6] = row["佣金"];
xlsheet.ActiveSheet.Cells[i, 7] = row["备注"];
xlsheet.ActiveSheet.Cells[i, 8] = groupID;//分组
t1 += Convert.ToDouble(row["手续费"]);
t2 += Convert.ToDouble(row["佣金"]);
if (j % 10 == 9)
{
SetFoot(xlsheet, ++i, t1, t2);
i++;
}
i++; j++;
}
try
{
//格式化 Selection.NumberFormatLocal = "0;[红色]0"
xlsheet.get_Range(xlsheet.Cells[1, 3], xlsheet.Cells[_table.Rows.Count, 3]).set_NumberFormat("0");
xlsheet.get_Range(xlsheet.Cells[1, 4], xlsheet.Cells[_table.Rows.Count, 4]).set_NumberFormat("￥#,##0.00");
xlsheet.get_Range(xlsheet.Cells[1, 5], xlsheet.Cells[_table.Rows.Count, 5]).set_NumberFormat("￥#,##0.00");
xlsheet.get_Range(xlsheet.Cells[1, 6], xlsheet.Cells[_table.Rows.Count, 6]).set_NumberFormat("￥#,##0.00");
if (_table != null) _table.Dispose();
xlsheet.Export(System.AppDomain.CurrentDomain.BaseDirectory + "计算并导出后的Excel.xls", OWC11.SheetExportActionEnum.ssExportActionNone, OWC11.SheetExportFormat.ssExportXMLSpreadsheet);
GC.Collect();
lblMsg.Text = "导出成功!!!";
}
catch
{
lblMsg.Text = "请关闭Excel文件，再重试!!!";
return;
}
Response.Redirect("计算并导出后的Excel.xls");
}
private void SetTitle(Microsoft.Office.Interop.Owc11.SpreadsheetClass xlsheet,int row)
{
//合并单元格
xlsheet.get_Range(xlsheet.Cells[row, 1], xlsheet.Cells[row, 8]).set_MergeCells(true);
xlsheet.ActiveSheet.Cells[row, 1] = "保险劳务费";
//字体加粗
xlsheet.get_Range(xlsheet.Cells[row, 1], xlsheet.Cells[row, 8]).Font.set_Bold(true);
//单元格文本水平居中对齐
xlsheet.get_Range(xlsheet.Cells[row, 1], xlsheet.Cells[row, 8]).set_HorizontalAlignment(OWC11.XlHAlign.xlHAlignCenter);
//设置字体大小
xlsheet.get_Range(xlsheet.Cells[row, 1], xlsheet.Cells[row, 8]).Font.set_Size(14);
xlsheet.get_Range(xlsheet.Cells[row, 1], xlsheet.Cells[row, 1]).set_RowHeight(35);
row++;
xlsheet.ActiveSheet.Cells[row , 1] = "编号";
xlsheet.ActiveSheet.Cells[row , 2] = "险种";
xlsheet.ActiveSheet.Cells[row , 3] = "保单号";
xlsheet.ActiveSheet.Cells[row , 4] = "手续费";
xlsheet.ActiveSheet.Cells[row, 5] = "手续费率";
xlsheet.ActiveSheet.Cells[row, 6] = "佣金";
xlsheet.ActiveSheet.Cells[row , 7] = "备注";
xlsheet.ActiveSheet.Cells[row , 8] = "分组序号";//分组
//字体加粗
xlsheet.get_Range(xlsheet.Cells[row, 1], xlsheet.Cells[row, 8]).Font.set_Bold(true);
//单元格文本水平居中对齐
xlsheet.get_Range(xlsheet.Cells[row, 1], xlsheet.Cells[row, 8]).set_HorizontalAlignment(OWC11.XlHAlign.xlHAlignCenter);
//设置字体大小8
xlsheet.get_Range(xlsheet.Cells[row, 1], xlsheet.Cells[row, 8]).Font.set_Size(10);
}
private void SetFoot(Microsoft.Office.Interop.Owc11.SpreadsheetClass xlsheet, int row,double t1,double t2)
{
row++;
xlsheet.ActiveSheet.Cells[row, 1] = "合计";
//字体加粗
xlsheet.get_Range(xlsheet.Cells[row, 1], xlsheet.Cells[row, 1]).Font.set_Bold(true);
//合并单元格
xlsheet.get_Range(xlsheet.Cells[row, 1], xlsheet.Cells[row, 3]).set_MergeCells(true);
//单元格文本水平居中对齐
xlsheet.get_Range(xlsheet.Cells[row, 1], xlsheet.Cells[row, 3]).set_HorizontalAlignment(OWC11.XlHAlign.xlHAlignCenter);
xlsheet.ActiveSheet.Cells[row, 4] = t1;
xlsheet.ActiveSheet.Cells[row, 6] = t2;
}
#endregion
Response导出的文件，中文文件名乱码的问题未解决，你自己小心！
0
using System.Reflection;
using Microsoft.Office.Interop.Excel;
Application myExcel = new ApplicationClass();
Workbook myWorkbook = null;
Worksheet mySheet = null;
string excelFileName = "test.xls";
try
{
// 打开Excel文件
myWorkbook = myExcel.Workbooks.Open(excelFileName, Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);
// 获取第一个sheet
mySheet = (Worksheet)myWorkbook.Sheets[1];
// 读取第一行第一列的数据
string firstString = (string)((Range)mySheet.Cells[1, "A"]).Formula.ToString();
// 修改第一行第一列的数据
((Range)mySheet.Cells[1, "A"]).Formula = "test";
// 保存Excel文件
myWorkbook.SaveAs(mappingFilePath, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value,
XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);
// 关闭Excel文件
myWorkbook.Close(false, Missing.Value, Missing.Value);
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
finally
{
// 释放资源
mySheet = null;
myWorkbook = null;
myExcel.Quit();
myExcel = null;
}
