如何在 C# 中声明会话变量？
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How to declare session variable in C#?
提问by Carrie
I want to make a new session, where whatever is typed in a textbox is saved in that session. Then on another aspx page, I would like to display that session in a label.
我想创建一个新会话，在该会话中保存在文本框中键入的任何内容。然后在另一个 aspx 页面上，我想在标签中显示该会话。
I'm just unsure on how to start this, and where to put everything.
我只是不确定如何开始这个，以及把所有东西放在哪里。
I know that I'm going to need:
我知道我需要：
protected void Page_Load(object sender, EventArgs e)
{
if (Session["newSession"] != null)
{
//Something here
}
}
But I'm still unsure where to put everything.
但我仍然不确定把所有东西放在哪里。
采纳答案by Tim Schmelter
newSessionis a poor name for a Sessionvariable. However, you just have to use the indexer as you've already done. If you want to improve readability you could use a property instead which can even be static. Then you can access it on the first page from the second page without an instance of it.
newSession是一个糟糕的Session变量名称。但是，您只需要像之前一样使用索引器即可。如果你想提高可读性，你可以使用一个甚至可以是静态的属性。然后，您可以在没有实例的情况下从第二页访问第一页。
page 1 (or wherever you like):
第 1 页（或任何您喜欢的地方）：
public static string TestSessionValue
{
get
{
object value = HttpContext.Current.Session["TestSessionValue"];
return value == null ? "" : (string)value;
}
set
{
HttpContext.Current.Session["TestSessionValue"] = value;
}
}
Now you can get/set it from everywhere, for example on the first page in the TextChanged-handler:
现在你可以从任何地方获取/设置它，例如在TextChanged-handler的第一页上：
protected void TextBox1_TextChanged(Object sender, EventArgs e)
{
TestSessionValue = ((TextBox)sender).Text;
}
and read it on the second page:
并在第二页阅读：
protected void Page_Load(Object sender, EventArgs e)
{
this.Label1.Text = Page1.TestSessionValue; // assuming first page is Page1
}
