cnblogs/dcrenl/.net DataSet 导出到Excel.html

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<div>public void CreateExcel(DataSet ds, string typeid, stringFileName)</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; {</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;HttpResponse resp;</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; resp =Page.Response;</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;resp.ContentEncoding =System.Text.Encoding.GetEncoding("GB2312");</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;resp.AppendHeader("Content-Disposition", "attachment;filename=" +FileName);</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; stringcolHeaders = "", ls_item = "";</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; int i =0;</div>
<div><br />
</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;//定义表对象和行对像，同时用DataSet对其值进行初始化&nbsp;</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; DataTabledt = ds.Tables[0];</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; DataRow[]myRow = dt.Select("");</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; //typeid=="1"时导出为EXCEL格式文档；typeid=="2"时导出为XML格式文档&nbsp;</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; if (typeid== "1")</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; {</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp;//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&nbsp;</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; for (i = 0; i&lt; dt.Columns.Count; i++)</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; {</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; if (i == dt.Columns.Count - 1)</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; {</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; colHeaders+= dt.Columns[i].Caption.ToString() + "\n";</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; }</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; else</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; {</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; colHeaders+= dt.Columns[i].Caption.ToString() + "\t";</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; }</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; }</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp;//向HTTP输出流中写入取得的数据信息&nbsp;</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; resp.Write(colHeaders);</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp;//逐行处理数据&nbsp;</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; foreach (DataRow row inmyRow)</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; {</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp;//在当前行中，逐列获得数据，数据之间以\t分割，结束时加回车符\n&nbsp;</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; for (i = 0; i &lt; dt.Columns.Count;i++)</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; {</div>
<div><br />
</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; if (i ==dt.Columns.Count - 1)</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; {</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; ls_item += row[i].ToString()+ "\n";</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; }</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; else</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; {</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; ls_item += row[i].ToString()+ "\t";</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; }</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; }</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp;//当前行数据写入HTTP输出流，并且置空ls_item以便下行数据&nbsp;</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; resp.Write(ls_item);</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; ls_item = "";</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; }</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; }</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; else</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; {</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; if (typeid == "2")</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; {</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp;//从DataSet中直接导出XML数据并且写到HTTP输出流中&nbsp;</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; resp.Write(ds.GetXml());</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; }</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; }</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;//写缓冲区中的数据到HTTP头文档中&nbsp;</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;resp.End();</div>
<div>&nbsp; &nbsp; &nbsp;&nbsp; }&nbsp;</div>

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