推薦：datagrid綁定list沒有數據 表頭不顯示的解決方法datagrid綁定list沒有數據 表頭不顯示的問題,那是因為 綁定了null,你給list new一下就好 表頭就會有啦
<%@ Page Language="C#" %>
<%@ import Namespace="System.Data" %>
<%@ import Namespace="System.Data.SqlClient" %>
<%@ import Namespace="MD" %>
<script runat="server">
string tableName = "";
string procName ="";
private string selectSql( string selstr )
{
string sp =selstr + " WHERE";
int iwhere;
iwhere=sp.IndexOf("WHERE");
iwhere=iwhere+7;
string sall = Server.UrlDecode(Request.QueryString.ToString());
string[] sparams;
sparams=sall.Split('&');
int i=0;
if (sparams.Length>1){
while (i<sparams.Length){
if (!(sparams[i].StartsWith("table"))){
if ((sparams[i].StartsWith("str") )){
sp=sp+" and " + sparams[i].Replace("=","='").Substring(3) + "'";
}
if ((sparams[i].StartsWith("num") ))
{
sp=sp+" and " + sparams[i].Substring(3) + "";
}
}
i++;
}
}
if (sp.IndexOf("and") >0 ){
sp = (sp.Substring(0,sp.IndexOf("and")) + sp.Substring(sp.IndexOf("and")+3));
}
//sp=sp.Replace("=","='");
if (sp.Length<iwhere) {
sp=sp.Substring(0,(iwhere-8));
}
return sp;
}
private string selectProc( string selstr )
{
string sp =selstr + " ";
string sall = Server.UrlDecode(Request.QueryString.ToString());
//Server.UrlDecode(Request.QueryString.ToString());
string[] sparams;
sparams=sall.Split('&');
int i=0;
if (sparams.Length>1)
{
while (i<sparams.Length)
{
if (!(sparams[i].StartsWith("procedure")))
{
if ((sparams[i].StartsWith("str") ))
{
sp=sp + "'" + sparams[i].Substring( sparams[i].IndexOf("=")+1) + "',";
}
if ((sparams[i].StartsWith("num") ))
{
sp=sp + sparams[i].Substring( sparams[i].IndexOf("=")+1) + ",";
}
}
i++;
}
}
if (sp.EndsWith(",")){
sp=sp.Substring(0, (sp.Length -1));
}
return sp;
}
private void Page_Load(object sender, System.EventArgs e)
{
// setup connection
//Response.Write(selectSql("start test!"));
string conn = ConfigurationManager.ConnectionStrings["ConnStr"].ConnectionString; /// System.Configuration.ConfigurationSettings.AppSettings["connectionString"];
if (Request.QueryString["table"]== null && Request.QueryString["procedure"]==null)
{
this.Response.Write("not supply correct parameters!");
this.Response.End();
return;
}
DataSet ds = new DataSet();
ds.Locale = new System.Globalization.CultureInfo("zh-CN");
//OleDbDataAdapter adapter=new OleDbDataAdapter();
if (!(Request.QueryString["table"]== null ) )
{
/*string test1=selectSql(("SELECT * from " + Request.QueryString["table"]));
this.Response.Write(test1);
this.Response.End();
return;*/
tableName=Request.QueryString["table"];
MD.SqlHelper.FillDataset(conn,System.Data.CommandType.Text ,selectSql(("SELECT * from " + tableName)),ds,new string[] {"down"});
}
if (!(Request.QueryString["procedure"]== null ) )
{
/*string test2=selectProc(("exec " + Request.QueryString["procedure"]));
this.Response.Write(test2);
this.Response.End();
return;*/
procName=Request.QueryString["procedure"];
MD.SqlHelper.FillDataset(conn,System.Data.CommandType.Text ,selectProc(("exec " + procName)),ds,new string[] {"down"});
}
if (ds.Tables[0].Rows.Count==0){
this.Response.Write("條件不符,查詢沒有任何資料!");
return;
}
string downRes="";
if (procName=="")
{
downRes=tableName;
}
else
{
downRes=procName;
}
//OleDbDataAdapter adapter = new OleDbDataAdapter("SELECT * from " + tableName, conn);
//Response.Write(selectSql("SELECT * from " + tableName));
//return;
// open the Database and get the results
this.DataGridDown.DataSource=ds;
this.DataGridDown.DataBind();
this.Response.Clear();
this.Response.Buffer =true;
this.Response.Charset="utf-8";
this.Response.ContentType="application/ms-excel";
this.Response.AppendHeader("content-Disposition","attachment;filename="+downRes+".xls");
this.Response.ContentEncoding =System.Text.Encoding.GetEncoding("utf-8");
//Response.ContentEncoding = System.Text.Encoding.utf-8;
this.EnableViewState =false;
System.IO.StringWriter OStringWriter = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter OHtmlTextWriter = new System.Web.UI.HtmlTextWriter(OStringWriter);
this.DataGridDown.RenderControl(OHtmlTextWriter);
this.Response.Write(OStringWriter.ToString());
this.Response.End();
// if the action is update, well, we update our DB
}
</script>
<html>
<head>
<meta http-equiv="content-type" content="application/x-excel; charset=UTF-8"/>
<!-- <meta http-equiv="Content-Type" content="application/x-msexcel; charset=iso-8859-1" /> -->
</head>
<body>
<form runat="server">
<asp:DataGrid id="DataGridDown" style="Z-INDEX: 100; POSITION: absolute" runat="server" Height="373px" Width="674px" >
</asp:DataGrid>
<!-- Insert content here -->
</form>
</body>
</html>
