DataGrid转为xls并下载
具体代码(下载交换机资料):
//DataGrid控件不能分页,否则下载会失败.
<%@page language="C#"%>
<%@import namespace="System.Data"%>
<%@import namespace="System.Data.OleDb"%>
<%@import namespace="System.IO"%>
<script language="c#" runat="server">
string connstr=ConfigurationSettings.AppSettings["connstr1"];
public void page_load(Object obj,EventArgs e)
{
if(!Page.IsPostBack){
BindData();
}
}
private void BindData()
{
string sql=@"Select
catalyst.id,catalyst.label,catalyst.types,catalyst.ipv4,catalyst.moreinfo,catalyst.up_port,catalyst.port,catalyst.enterdate,l
ocation.location_name From catalyst,location where catalyst.location=location.location_id
order by substring(catalyst.ipv4,8,3)";
DataView dv=new DataView(ExecuteToDataSet(sql));
int RowCount=dv.Count;
mess.Text="<b>(表的总记录数:"+RowCount.ToString()+")</b>";
Results.DataSource=dv;
Results.DataBind();
}
private DataTable ExecuteToDataSet(string sql)
{
try{
OleDbConnection conn=new OleDbConnection(connstr);
DataSet ds=new DataSet();
OleDbDataAdapter da=new OleDbDataAdapter(sql,conn);
da.Fill (ds);
return ds.Tables[0];
}
catch(OleDbException ex){
info.Text=ex.Message;
return null;
}
}
private void Lb_Click(Object sender,EventArgs e)
{
Response.ContentType="application/vnd.ms-excel";
Response.Charset="";
this.EnableViewState=false;
StringWriter sw=new StringWriter();
HtmlTextWriter hw=new HtmlTextWriter(sw);
Results.RenderControl(hw);
Response.Write(sw.ToString());
Response.End();
}
</script>
<html>
<head>
<title>c#</title>
</head>
<body>
<form runat="server">
<asp:LinkButton OnClick="Lb_Click" Text="下载交换机资料" runat="server"/>
<asp:label id="mess" forecolor="red" runat="server"/>
<asp:label id="info" forecolor="blue" runat="server"/>
<asp:datagrid id="Results" runat="server"
alternatingitemstyle-backcolor="#799AE1"
ItemStyle-BackColor="#CCCCFF"
AutoGenerateColumns="false"
headerstyle-backcolor="#6699ff"
font-size="9pt"
bordercolor="#FFFFFF">
<columns>
<asp:TemplateColumn HeaderText="编号" >
<ItemTemplate>
<%#DataBinder.Eval(Container.DataItem,"Label")%>#
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="类型" >
<ItemTemplate>
<%#DataBinder.Eval(Container.DataItem,"types")%>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="交换机IP" >
<ItemTemplate>
<%#DataBinder.Eval(Container.DataItem,"ipv4")%>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="线缆来源">
<ItemTemplate>
<%#DataBinder.Eval(Container.DataItem,"location_name")%>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="具体位置">
<ItemTemplate>
<%#DataBinder.Eval(Container.DataItem,"moreinfo")%>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="上联口">
<ItemTemplate>
<%#DataBinder.Eval(Container.DataItem,"up_port")%>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="父级端口">
<ItemTemplate>
<%#DataBinder.Eval(Container.DataItem,"port")%>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="加入日期" >
<ItemTemplate>
<%#DataBinder.Eval(Container.DataItem,"enterdate","{0:yyyy/MM/dd}")%>
</ItemTemplate>
</asp:TemplateColumn>
</columns>
</asp:datagrid>
</form>
</body>
</html>