Response.Write("<script type='text/javascript' language='javascript' >alert('用户名不能为空！请输入！')</script>");
---------------------------------------------------------------
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script type="text/javascript" language="javascript">
function showCustomer() {
alert("ddd")
var str = document.getElementById("txtvalue").value;
if (str == "") {
return;
}
var xmlhttp;
if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
}
else {// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function () {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
document.getElementById("txtHint").innerHTML = xmlhttp.responseText;
}
}
xmlhttp.open("GET", "Conn.aspx?name="+str, true);
xmlhttp.send();
}
function add() {
var names = document.getElementById("names").value;
var Valuses = document.getElementById("Valuses").value;
if (names == "") {
return;
}
if (Valuses == "") {
return;
}
var xmlhttp;
if (window.XMLHttpRequest) {
xmlhttp=new XMLHttpRequest();
}
else{
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function () {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
document.getElementById("txtHint").innerHTML = xmlhttp.responseText;
}
}
xmlhttp.open("POST", "addweb.aspx", true);
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlhttp.send("names='" + names + "'&Valuses='" + Valuses + "'");
}
</script>
</head>
<body>
<input type="button" id="btncoon" value="连接" onclick="showCustomer()" /><br />
<input type="text" id="txtvalue" />
<input type="button" id="Button1" value="查询" onclick="showCustomer()" />
<br />
<input type="text" id="names" /><input type="text" id="Valuses" />
<input type="button" id="btnadd" value="添加" onclick="add()" />
<div id="txtHint">
</div>
</body>
</html>
------------------------------------------------------------
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Conn.aspx.cs" Inherits="WebApplication1.Conn" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<%
string strconn = "Data Source=PC-201001081513;Initial Catalog=WebFirst;Integrated Security=True";
SqlConnection conn = new SqlConnection(strconn);
SqlCommand cmd = new SqlCommand();
if (conn.State == ConnectionState.Closed)
{
conn.Open();
}
string ad = Request["name"];
string sql = "select Name,Valuses,ParentId from DaoHang where name='"+ad +"'";
cmd.CommandText = sql;
cmd.Connection = conn;
// System.Data.DataSet ds = new System.Data.DataSet();
// System.Data.SqlClient.SqlDataAdapter sda = new System.Data.SqlClient.SqlDataAdapter(cmd);
// sda.Fill(ds);
// if (ds.Tables[0].Rows.Count > 0)
//{
// }
SqlDataReader ar = cmd.ExecuteReader();
while (ar.Read())
{
Response.Write(ar.GetSqlString(0)+"</br>");
}
%>
</div>
</form>
</body>
</html>