不能访问实例化的对象C#/ asp.net [英] can't access instantiated object c#/asp.net
问题描述
我有这是一个应用程序实例从一个名为SecretNumber时,页面的GET完成类的对象。在那之后,我想与实例的实例化一个新的,而不是对象的工作。
下面是幕后文件code一块我的code,而问题是,我不能使用的按钮功能里面的对象引用。我得到一个错误,告诉该名称不会在目前的情况下存在。
这又如何解决呢?在此先感谢!
公共部分类_Default:System.Web.UI.Page
{
保护无效的Page_Load(对象发件人,EventArgs的发送){
SecretNumber guessNr =新SecretNumber();
} 保护无效btnCheckNr_Click(对象发件人,EventArgs的发送){
如果(!Page.IsValid){
返回;
} 其他{
VAR guessedNr = int.Parse(inputBox.Text);
VAR的结果= guessNr.MakeGuess(guessedNr); < - 'guessNr'这个名字并不在目前的情况下存在
}
}
}
变量该方法的范围中移动宣言,所以它成为的那种类型的私有字段 _Default
。
这应当制定
公共部分类_Default:System.Web.UI.Page
{
私人SecretNumber guessNr; 保护无效的Page_Load(对象发件人,EventArgs的发送){
guessNr =新SecretNumber();
} 保护无效btnCheckNr_Click(对象发件人,EventArgs的发送){
如果(!Page.IsValid){
返回;
} 其他{
VAR guessedNr = int.Parse(inputBox.Text);
VAR的结果= guessNr.MakeGuess(guessedNr); < - 'guessNr'这个名字并不在目前的情况下存在
}
}
}
I have an application that's instantiates an object from a class called "SecretNumber" when a get of the page is done. After that, I want to work with the object that's instantiated instead of instantiating a new one.
Below is a piece of my code from the code behind-file, and the problem is that I can't use the object reference inside the button function. I get an error telling that the name doesn't exist in the current context.
How can this be solved? Thanks in advance!
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e) {
SecretNumber guessNr = new SecretNumber();
}
protected void btnCheckNr_Click(object sender, EventArgs e) {
if (!Page.IsValid) {
return;
}
else {
var guessedNr = int.Parse(inputBox.Text);
var result = guessNr.MakeGuess(guessedNr); <- The name 'guessNr' does not exist in the current context
}
}
}
Move declaration of the variable out of the scope of the method, so it becomes a private field of the type _Default
.
This shall work
public partial class _Default : System.Web.UI.Page
{
private SecretNumber guessNr;
protected void Page_Load(object sender, EventArgs e) {
guessNr = new SecretNumber();
}
protected void btnCheckNr_Click(object sender, EventArgs e) {
if (!Page.IsValid) {
return;
}
else {
var guessedNr = int.Parse(inputBox.Text);
var result = guessNr.MakeGuess(guessedNr); <- The name 'guessNr' does not exist in the current context
}
}
}
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