Question

怎么把datatable中的数据分成多个excel文件

Answer 1

leName是生成Excel的名字
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();
}

//生成xml
protected void Button3_Click(object sender, EventArgs e)
{
DataSet ds = new DataSet();
SqlConnection conn = new SqlConnection("database=库;server=.;uid=sa;pwd=;");
string sql1 = "select * from 表";
SqlDataAdapter da = new SqlDataAdapter(sql1, conn);
da.Fill(ds);
DataTable dt = ds.Tables[0].Copy();
CreateExcel(dt, "table");
}

Answer 2

把这个DATATABLE分为几个DATATABLE就行了吧