viewstate

问题 I want to persist user control values If I add one more rows the previous control values is not there I gone through some sites but I'm not able to understand clearly Code: protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { ViewState["ControlCount"] = ViewState["ControlCount"] == null ? 2 : ViewState["ControlCount"]; } } public int controlCount { get { int val = 0; try { val = (int)ViewState["ControlCount"]; } catch (Exception e) { // handle exception, if required. }

问题 Greetings, hopefully there is a simple solution for this complex problem. Please correct any misconceptions I have along the way. A while ago I wrote a GrivView with dynamic column capability. The columns are added in the OnInit page event so that they are added BEFORE the viewstate is applied. They are reapplied on every posting in this section of the page so that when the viewstate is applied changes that the user has made and not committed to the database are maintained. It also is

问题 THE IDEA I'm trying to do a very simple thing - refresh page when an item of the drop down list is selected. Selected item of the dropdownlist is passed to the query string as a parameter. Page reloads. Then parameter is taken from query string and used to restore selection of the drop down list. Parameter keeps the value of the selected item. THE PROBLEM Real selected value is not passed to the query string parameter, it's always "0". DropDownList never gets last selected item, it always

问题 I was reading this article from Microsoft about the state management. http://msdn.microsoft.com/en-us/library/75x4ha6s(v=vs.100).aspx I found an interesting thing here. ViewState is categorized as Client Side option (Although I already knew that). It reminds me of our code in the application. DataTable dt = getDatatableFromDB(); ViewState["dataTable"] = dt; And this code is working fine at the moment. My confusion is : How can a client side object(ViewState) save Server side object(Datatable)

问题 I am currently load testing a .Net web application. In which scenario is like, user will login and will do certain steps of navigation then he/she will fill one evaluation form, submit it and then logout from the application. So for this scenario there are many GET and POST request are there. And as its a .Net application server will do some authentication using view-State and _Event-Validation. But to handle that thing I am not sure from which request I need to fetch those 2 Parameter and

问题 I have a dropdown which I fill with data from a SQL server. I fill the dropdown dynamically in the Page_Init() Event. Depending on the Value, a ListItem is selected. Now the problem is, that when I select another Item in the dropdown, that after the postback the selection is reset to the first item in the dropdownlist. This here is a basic version of my code which does not work: ArrayList AD_Group_Members = ActiveDirectory.GetMemberOfGroup("AD-Group"); ArrayList ListMachines = SQLQuery.Read(

问题 I`ve got a link in a Webforms page which opens in a new window, and posts to a form other than the page itself. This is done like this: JS: var submitFunc = function(){ document.forms[0].action = 'http://urlToPostTo/somePage.aspx'; document.forms[0].target = '_blank'; document.forms[0].submit(); } The link: <input type="hidden" id="myDataId" value="12345" /> <a href="javascript:submitFunc();">Search</a> As you can see, this overrides the target of the main <form> , and attempts to post to a

问题 I have a site that consists of an ajax driven menu, administration.aspx, and several linked pages in this menu. Somtimes though, the navigation between them seems to be broken. For instance, when situated at LayoutSettings.cs , clicking Countries.cs just causes LayoutSettings.cs to reload (but Countries.cs can be reached from other pages on the site). No error message gets displayed, but upon setting a breakpoint in Global.asax.cs.Application_Error() , I notice that the following is happening

问题 I have recently started researching how to use a custom view-state provider to move storage of viewstate from the page to the server. The obvious advantage of this is reducing the rendered page size and thus, increasing the user experience. Also, the biggest disadvantage that I know of is that server memory usage will increase. For this issue I can easily move the storage to a different server than the web server (AppFabric, for example) Besides this, are there other pitfalls that may arise?

问题 I've a .aspx Site with a ASP Table. In the code behind file I fill the table with rows, cells and in the cells are ASP TextBoxes. At the first load I Fill the TextBoxes with Values out of a database. But after someone is editing the value and submit the Page with a created button, there are no Access to the programmaticaly created rows of the table. now I have seen some postings that a dynamic created asp table is getting resetted by postback. now I have a question, how can I get the values