viewstate

问题 I want to store some byte[] to ViewState. For example I want to store a list of FileBytes. How can I do it? 回答1: I haven't actually tried this with a list, but it should be pretty simple: List<byte> myByteList; // do something here to load list ViewState["Bytes"] = myByteList When you need to get it out: List<byte> myByteList = (List<byte>)ViewState["Bytes"]; Edit: Changed from byte[] to List. 来源： https://stackoverflow.com/questions/4915206/how-can-i-store-a-byte-list-in-viewstate

问题 I've got a page with several controls, such as Checkboxlists and two containers holding search results. I've been told to make this site persistent, so the user can come back from anywhere while browsing our site and find it's settings restored (read: boxes stll checked; results still available) So far I have tried to override SavePageStateToPersistenceMedium and LoadPageStateFromPersitenceMedium, but I am constantly running into a yellow screen of death as soon, as I click a button on the

问题 I have a simple page consisting of two forms. They cannot be displayed simultaneously (one toggles the other). Here is the code: <h:body> <ui:composition template="/elements/templateWithMenu.xhtml"> <ui:define name="content"> <p:dialog id="question1DialogId" widgetVar="question1Dialog" resizable="false" closable="false" visible="true"> <h:panelGroup id="questionStep1Group"> <h:form id="questionStep1Form" rendered="#{newPoll2.displayQuestionStep1}"> <h:commandLink value="next" action="#

问题 Asp.Net has some options to influence the ways a page its ViewState is generated (encryption, adding of a mac, ViewStateUserKey). I would like to do it myself, not based on configuration, but on my own class that used other algorithms for serialization and encryption. Is this possible? 回答1: Yes, it's possible. For instance, I built a view state compression logic based on some articles you can find on CodeProject. You'll need to override PageStatePersister from Page and create a class

问题 I have a web application that use Session variables for mantain the state of some datatable. I'm not using viewstate for not increase weight of the page. I not need to mantain the state on page changing, so I want free these session variables on page leave. How can I intercept when user changing website page ? There is a method like "Page Leave"? 回答1: Session data is useful for storing data beyond the lifetime of a page. If you don't want to store it beyond the life of a page then Session

问题 In ASP.NET, is it possible to get the values of __VIEWSTATE and __EVENTVALIDATION hidden fields into a variable in C# (server side) in, let's say, overriding the Render method? I have tried: protected override void Render(HtmlTextWriter writer) { StringBuilder stringBuilder = new StringBuilder(); StringWriter stringWriter = new StringWriter(stringBuilder); HtmlTextWriter htmlWriter = new HtmlTextWriter(stringWriter); base.Render(htmlWriter); string temp = stringBuilder.ToString(); } This

问题 I have tried with regular expression also with css/j query extractor,not able to run my script properly. My exact test scenario is kind of There is kind of application form. First Load the page. Fill with some data, then go to next page. Now again fill some details, and Submit. Note:For Each and every 'application form' there is two "9" digit unique number , which gets generated from server side, and after participating the form there is two options: a)Access Count b)Response Count Every time

问题 I am newish to MVC and understand all the great things about it, including the reasons why viewstate isn't available, however there are some circumstances where I think having some kind of view state will be quite handy, In my case I am thinking about list pages with various search filters that can be applied to the list. Would it be worthwhile implementing some kind of pseudo viewstate to hold this info in some cases? or is there a better solution? Any examples out there? Your comments

问题 This has me totally puzzled, can anyone explain this? Markup: <form id="form1" runat="server"> <asp:TextBox runat="server" ID="txtTest" /> <asp:PlaceHolder runat="server" ID="PlaceHolder1" /> <asp:Button runat="server" Text="Click" /> </form> Code Behind: protected void Page_Load(object sender, EventArgs e) { txtTest.Text = "BBB"; PlaceHolder1.Controls.Add(new TextBox() { Text = "AAA" }); } When I change the text in both textboxes, then click the 'Click' button, the text in txtTest is

问题 I am confused in how to use ViewState in C#, for example what is the benefit of using: ViewState["VST"]="Value1"; Lable1.Text= ViewState["VST"].ToString(); Whereas I can use: string container= "Value1"; Lable1.Text= container; 回答1: Your ViewState consists of variables that are kept with the post-backs of your page, because they are sent to the client and the client sends them back with the entire page. Hence, if you do: string container= "Value1"; Lable1.Text= container; Then the users sees