菜鸟求助！！！C#创建excel文件

Question

如题，我想创建一个excel文件格式需要自定义的

Answer 1

 public void CreateExcel(DataSet ds, string FileType, string FileName) {
            Response.Clear();
            Response.Charset = "UTF-8";
            Response.Buffer = true;
            Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
            Response.AppendHeader("Content-Disposition", "attachment;filename=\"" + System.Web.HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8) + ".xls\"");
            Response.ContentType = FileType;
            string colHeaders = string.Empty;
            string ls_item = string.Empty;            //定义表对象与行对象，同时用DataSet对其值进行初始化 
            DataTable dt = ds.Tables[0];
            DataRow[] myRow = dt.Select();//可以类似dt.Select("id>10")之形式达到数据筛选目的
            int i = 0;
            int cl = dt.Columns.Count;            //取得数据表各列标题，各标题之间以t分割，最后一个列标题后加回车符 
            for (i = 0; i < cl; i++) {
                if (i == (cl - 1))//最后一列，加n
                {
                    colHeaders += (dt.Columns[i].Caption.ToString()) + "\n";
                }
                else {
                    colHeaders += (dt.Columns[i].Caption.ToString()) + "\t";
                }
            }
            Response.Output.Write(colHeaders);
            //向HTTP输出流中写入取得的数据信息             //逐行处理数据   
            foreach (DataRow row in myRow) {
                //当前行数据写入HTTP输出流，并且置空ls_item以便下行数据     
                for (i = 0; i < cl; i++) {
                    if (i == (cl - 1))//最后一列，加n
                    {
                        ls_item += row[i].ToString() + "\n";
                    }
                    else {
                        ls_item += row[i].ToString() + "\t";
                    }                }
                Response.Output.Write(ls_item);
                ls_item = string.Empty;            }
            Response.Output.Flush();
            Response.End();
        }

Answer 2

http://www.csharpwin.com/csharpspace/4780r6601.shtml