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目的:在aspx页面的一个文本框失去焦点时,触发一个查询TABLE的动作。
1. page_load 添加 txtInternal.Attributes["onfocus"] = "MyJsFunc()"; 2. 页面javascript添加: <script ...> ... function MyJsFunc()
{
var txt = document.getElementById("txtLotID").value;
PageMethods.MyMethod(txt,OnSuccess);
}
function OnSuccess(value)
{
document.getElementById("txtInternal").innerText=value;
//$get('<%= Label1.ClientID %>').innerText = result=="false" ? "该用户已注册" : "OK";
} ... <script> 3. html添加:在div标签里头,form外头 <div> <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true"></asp:ScriptManager> <form> </form> </div>
4.aspx.cs文件: [System.Web.Services.WebMethod] //要在客户端使用服务器方法,必须加上这个Attribute
public static string MyMethod(string str_lotid) //方法必须是static
{
LabelView labelview = new LabelView();
labelview.LotID = str_lotid;
HttpResponse resp = System.Web.HttpContext.Current.Response;
ProcessGetLabelViewByLotID getLabelbylotid = new ProcessGetLabelViewByLotID();
getLabelbylotid.LabelView = labelview;
try
{
getLabelbylotid.Invoke();
}
catch (Exception ex)
{
string str_url;
str_url = "ErrorPage.aspx?ErrorMessage=" + HttpUtility.UrlEncode(ex.Message);//Server.urlencode(ex.Message);
resp.Redirect(str_url);
}
string str = getLabelbylotid.LabelView.PartName.ToString();
return str;
}
备注:一定要有OnSuccess |
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