如何使用Knockout从vm设置会话变量？

I've seen a number of question on how to get a Session variable into knockout, but none explaining how to set one from a Knockout vm. My setup:

我已经看到了一些关于如何将一个Session变量转换为knockout的问题，但没有一个解释如何从Knockout vm中设置一个。我的设置：

-ASPX page where I get a Session["GridSize"] variable, and return it as a global variable called currentGridSize

-ASPX页面，我得到一个Session [“GridSize”]变量，并将其作为一个名为currentGridSize的全局变量返回

-VM where I get that global variable, and set this.gridSize = globals.gridSize

-VM我得到那个全局变量，并设置this.gridSize = globals.gridSize

-Dropdown that changes this.gridSize

-Dropdown更改this.gridSize

What I need:

我需要的：

-Some way to set Session["GridSize"] = this.gridSize, either when it changes or when the page is left

- 一些设置Session [“GridSize”] = this.gridSize的方法，无论是更改还是页面保留时

I have tried:

我努力了：

-Using a webmethod function on my .aspx.vb and calling that (Session variables cannot be called from a Shared function, and webmethods must be shared)

- 在我的.aspx.vb上使用webmethod函数并调用它（无法从共享函数调用会话变量，并且必须共享webmethods）

-Calling <%Session["CurrentPageIndex"]= self.currentPageIndex();%> from the vm

从vm中调用<％Session [“CurrentPageIndex”] = self.currentPageIndex（）;％>

1 个解决方案

#1

You can access Session in an ASP.NET AJAX Page Method, by doing the following to your page method:

您可以通过对页面方法执行以下操作来访问ASP.NET AJAX页面方法中的Session：

<WebMethod(EnableSession := True)> _
Public Shared Sub StoreSessionValue(sessionValue As String)
    ' Set a value into Session
    HttpContext.Current.Session("TheSessionValue") = sessionValue
End Sub

<WebMethod(EnableSession := True)> _
Public Shared Function GetSessionValue(sessionValueName As String) As String
    ' Get a value from Session
    Return HttpContext.Current.Session(sessionValueName)
End Sub

Note: You must fully qualify the Session object as HttpContext.Current.Session.

注意：您必须将Session对象完全限定为HttpContext.Current.Session。

You can call this page method inside of your view model function, like this:

您可以在视图模型函数中调用此页面方法，如下所示：

$.ajax({
  type: "POST",
  url: "YourPage.aspx/GetSessionValue",
  data: "{'sessionValueName':'sessionValue'}",
  contentType: "application/json; charset=utf-8",
  dataType: "json",
  success: function(data) {
    // Do something with data returned here

  }
});

1 个解决方案

#1

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