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ASP.NET enter key and form submit with no javascript

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问题 I have a form that I want to submit when the user presses the enter key. It works fine in Firefox, but not in IE. It is basically the same issue as this, except that I am not allowed to use any JavaScript: Enter button does not submit form (IE ONLY) ASP.NET Unfortunately it looks like ASP.NET uses JavaScript to process the button postback. Is there a way around this issue that doesn't rely on JavaScript? 回答1: The fix for this is what was listed in the bottom of the page of your linked post.

ASP.NET: Postback processed without events being fired

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问题 I have a GridView with dynamically created image buttons that should fire command events when clicked. The event handling basically works, except for the very first time a button is clicked. Then, the postback is processed, but the event is not fired. I have tried to debug this, and it seems to me, that the code executed before and after the first click is exactly the same as for any other clicks. (With the exception that in the first click, the event handler is not called.) There is some

problems with postbacks events from dynamic controls in ASP.Net

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问题 I am currently working on a page that has a user control that builds a dynamic table. The control is originally loaded on the Page_Init event, and any time that an event is raised that changes the dynamic control the table is reloaded. The problem here is that if the control is changed between between loads, the events from the control do not fire. For instance, there are originally two rows in the table. An item is added to the table during the postback and now there are four rows (this

How to set treeview's childnode postback false on ASP.NET?

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问题 I have a treeview and i want no postback on click any childnodes.And i will get selected childnode value. I found a solution , when i set "node_.SelectAction = TreeNodeSelectAction.None;" i cant select any childnodes and no highlight on it. Waiting your helps.Sorry about my en. Aspx: <asp:TreeView ID="TreeView1" runat="server"></asp:TreeView> Cs: TreeView1.Nodes.Clear(); TreeView1.TreeNodeExpanded += new TreeNodeEventHandler(TreeView1_TreeNodeExpanded); DataTable dt = ImzaDll.Imza

The global variable doesn't keep its value

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The problem is , every time i do a postback my variable "value" doesn't keep it's previous value, and always the dictionary is empty. It doesn't have any previous saved data. How can i make it to save data ? this is the code : public partial class MyCart : System.Web.UI.Page { public Dictionary<string, string> value = new Dictionary<string, string>(); protected void Page_Load(object sender, EventArgs e) { TextBox textbox = new TextBox(); textbox.TextChanged += textbox_TextChanged; textbox.ID = "textbox" + p.IDProduct.ToString(); Button button = new Button(); } void textbox_TextChanged(object

Twice postback in ASP.NET

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问题 My page is fully postback twice. I am using master page with AJAX. The structure of master page is as follows. +---------------------------------------------+ | Web User Control with AJAX Tab Control | +---------------------------------------------+ | | | | | Col1 | ContentPlaceHolder | Col3 | | | | | | | | | +---------------------------------------------+ The web user control contains the AJAX Tab Container with AutoPostback on. I have created several ASPX pages using this masterpage. The

Double PostBack inside UpdatePanel

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问题 I have a problem with ASP.NET firing a button click twice. The button is inside an UpdatePanel, but when I click it I get two postbacks, then two button clicks, then two calls to my DAL (in that order). I've never encountered this before, and changing AutoEventWireup to false had no effect. The only workaround I can think of would be to hide the functionality in a web service and handle the complications with jQuery, which I'd rather not do for a small project. The firebug dumps are below

How to avoid duplicate entry from asp.net on Postback?

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问题 I have a dropdown list that pulls data from template table. I have an Add button to insert new template. Add button will brings up jQuery popup to insert new values. There will be a save button to save the new data. On_Save_Click I enter the new data and close the popup. Here is the proplem: When I refresh the page, the page entering the values again. So, I get duplicate entries! Question: How can I avoid this issue? I check out Satckoverflow and Google, both they suggest to redirect to

ASP.Net viewstate questions on form postbacks

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问题 Let's assume I have a very simple form, with a submit button and a dropdown list. When I change the list entry and hit submit, at what stage in the postback processing does the viewstate reflect my changed list entry? According to O'Reilly's Learning ASP.Net 3.5, there are two loads taking place-- one before form validation and another after (diagram on page 266 for those with a copy). According to the diagram the viewstate is loaded during the first load stage, before the validation. I

Show Header/Footer when Gridview is Blank VB.net

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问题 I realise there is a solution for this but I am struggling to get it to convert to VB correctly :( I have managed to get a cascading set of dropdowns with data based upon each others results which I was really pleased with. However due to the post back the grid will disappear until the second value is selected and looks awful Is there anyway within VB to allow the header to stick around if there is no data within the grid view? Many thanks in advance. 回答1: Yes there is a way that can be done