c#简单的Excel数据导出......

/// <summary>

/// 导出Excel表数据

/// </summary>

/// <param name="dt"></param>

/// <param name="fileName"></param>

private void CreateExcel(DataTable dt, string fileName)

{

HttpResponse resp;

resp = Page.Response;

resp.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");

resp.AppendHeader("Content-Disposition", "attachment;filename=" + fileName);

string colHeaders = "", ls_item = "";

////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";

}

}

resp.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";

}

}

resp.Write(ls_item);

ls_item = "";

}

resp.End();

}