原始方法(失去游標驗證資料庫)

最後更新：2018-12-06 來源：互聯網

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頁面代碼：

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script type="text/javascript">
        function $(e) {
return document.getElementById ? document.getElementById(e) : null;
        }
        function Check(name) {
            var xmlHttp = false;
            var url = "Handler1.ashx?name=" + name + "&rd=" + Math.random();
            CreateXmlHttp();
            ajax_process(url);
        }
        function ajax_process(url) {
            xmlHttp.open("post", url, true);
            xmlHttp.onreadystatechange = ajax_sumbitemployment;
            xmlHttp.send(null);
            function ajax_sumbitemployment() {
if (xmlHttp.readyState == 4) {
if (xmlHttp.status == 200) {
if (xmlHttp.responseText == "validateNull") {
                            $('Label1').innerText = " 使用者名稱不可為空！";
return;
                        }

if (xmlHttp.responseText == "smallLength") {
// $('Label1').innerText = " 不能小於2個字元！";
                            alert("5432323");
return;
                        }
if (xmlHttp.responseText == "exist") {
                            $('Label1').innerText = " 使用者名稱已存在，請另選使用者名稱！";
return;
                        }
else {
                            $('Label1').innerText = "恭喜您使用者名稱可以使用!";
                        }
                    }
                }
            }
        }
//建立Ajax對象
        function CreateXmlHttp() {
try { xmlHttp = new ActiveXObject("Msxml2.XMLHTTP"); }
catch (e) {
try { xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); }
catch (e) {
try { xmlHttp = new XMLHttpRequest(); }
catch (e) { xmlHttp = false; } 
                } 
            }
        }  
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
<asp:TextBox ID="txtUsernaem" runat="server" onblur="return Check(this.value)"></asp:TextBox>

<asp:TextBox ID="TextBox1" runat="server"  ></asp:TextBox>
</div>
</form>
</body>
</html>

處理檔案：Handler1.ashx

  public class Handler1 : IHttpHandler
    {

public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
//context.Response.Write("Hello World");
            string Name = context.Request.QueryString["Name"];
if (!String.IsNullOrEmpty(Name))
            {
if (Name.Length < 2)
                {
                    context.Response.Write("smallLength");
                }
else
                {
                    context.Response.Write("exist");
                }

// Maticsoft.BLL.Personnel person = new Maticsoft.BLL.Personnel();
// Maticsoft.Model.personnelDate personDate = person.GetModel(Name);

//if (personDate != null)
//{
//    context.Response.Write("exist");
//}
            }
else
            {

                context.Response.Write("validateNull");
            }

        }

public bool IsReusable
        {
get
            {
return false;
            }
        }
    }

本文章原先以中文撰寫並發佈於 aliyun.com，亦設英文版本，僅作資訊用途。本網站不對文章的準確性，完整性或可靠性或其任何翻譯作出任何明示或暗示的陳述或保證。如對該文章有任何疑慮或投訴，請傳送電郵至 info-contact@alibabacloud.com 並提供相關疑慮或投訴的詳細說明。職員會於 5 個工作天內與您聯絡，一經驗證之後，即會刪除該侵權內容。

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原始方法(失去游標驗證資料庫)

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