postback

问题 I have a aspx Page where I am using AJAX. like <asp:UpdatePanel runat="server" ID="upPanelDDLProgram"> <ContentTemplate> <asp:DropDownList ID="DDLProgram" runat="server" Width="194px" Height="18px" OnSelectedIndexChanged="OnDDLProgramChanged" AutoPostBack="true"> </asp:DropDownList> </ContentTemplate> </asp:UpdatePanel> and my code behind is like protected void Page_Load(object sender, EventArgs e) { //if (!IsPostBack) //{ // BindProgramDDL(); //} BindProgramDDL(); } protected void

问题 I have the following problem in ASP.NET: there is a form that contains a textbox and a button next to it that is supposed to be pressed by the user after filling the box (sample on http://www.burnthespam.info, click "Pick your one", or when using ReCaptcha in a popup). Often, instead, users press ENTER key to submit the form. This doesn't cause the click event on the button to be triggered and possibly cause an unexpected behaviour. In burnthespam, I "tried" to solve by checking if there is

问题 I have the following problem in ASP.NET: there is a form that contains a textbox and a button next to it that is supposed to be pressed by the user after filling the box (sample on http://www.burnthespam.info, click "Pick your one", or when using ReCaptcha in a popup). Often, instead, users press ENTER key to submit the form. This doesn't cause the click event on the button to be triggered and possibly cause an unexpected behaviour. In burnthespam, I "tried" to solve by checking if there is

问题 My page has a pop-up. The button on popup generates and downloads Aspose excel file. (The page also has Ajax settings) Now after file download, my button is disabled and nothing else works on page unless i refresh it manually. Popup on page <div class="modal hide" id="AwaitPracSignoffReportModal"> <div class="modal-header"> <a class="close" data-dismiss="modal">×</a> <h3> <asp:Label runat="server" ID="lblPopupHeading" Text="Awaiting Practice Sign-off Report" /></h3> </div> <!-- Other asp

问题 I have a simple CalendarExtender (from AjaxControlToolkit) attached to a textbox. <asp:TextBox ID="StartDateText" runat="server" MaxLength="10" Width="70px" AutoPostBack="True" OnTextChanged="StartDateText_TextChanged" /> <asp:ImageButton ID="ImageCalendarStartDate" runat="server" ImageUrl="~/images/Calendar_scheduleHS.png" AlternateText="Click to show calendar" /> <asp:CalendarExtender ID="StartDateCalendarExtender" runat="server" TargetControlID="StartDateText" PopupButtonID=

问题 1) I found two articles, each categorizing a bit differently the two types of postback events: One resource says the two types of postback events are Changed event ( where controls implement IPostbackDataHandler ), which fires when data is changed between postbacks, and then are Raised events ( where controls implement IPostbackEventHandler ), which are raised by server controls for whatever reason the control sees fit Other article says the two types are Immediate response events and Change

问题 I Add Control Dynamiclly but; easc Postback event my controls are gone. I Can not see again my controls. So How can I add control ? 回答1: Add the controls in the Page's Init event and they will be preserved in viewstate when posting back. Make sure they have a unique ID. See this link... ASP.NET Add Control on postback A very trivial example.. public partial class MyPage : Page { TextBox tb; protected override void OnInit(EventArgs e) { base.OnInit(e); tb = new TextBox(); tb.ID = "testtb";

问题 I Add Control Dynamiclly but; easc Postback event my controls are gone. I Can not see again my controls. So How can I add control ? 回答1: Add the controls in the Page's Init event and they will be preserved in viewstate when posting back. Make sure they have a unique ID. See this link... ASP.NET Add Control on postback A very trivial example.. public partial class MyPage : Page { TextBox tb; protected override void OnInit(EventArgs e) { base.OnInit(e); tb = new TextBox(); tb.ID = "testtb";

问题 While doing asynchronous postback page losings gridviewscroll script even after i did script register on code behind. (I have grid in update panel.. This happen when clicking "add new row" in asp.net grid view.) I have tried with the following three methods. ScriptManager.RegisterStartupScript(UpdatePanel_Objective, this.GetType(), UpdatePanel_Objective.UniqueID, "gridviewScroll();", true); ScriptManager.RegisterStartupScript(this.Page, this.GetType(), "script", "gridviewScroll();", true);

问题 Using Facebox with .NET (Web Forms) is painful--this primarily HTML site was designed by someone else. I may have IIS (7.5) issues as well. This Facebox pop-up is in a separate file, login.html, that is called from index.html: $k('a[rel*=example_2]').facebox_1({ loading_image : '/images/loading.gif', close_image : '/images/closelabel.gif' }); and the link to open it <a href="login.html" title="Log In" rel="example_2" id='login'>Log In </a> The form to be submitted with username and password