我只想在表单加载时执行某些操作 [英] I want to execute something only on form load

问题描述

嗨

我正在窗体加载时调用一个方法，该方法将使用值填充变量，我希望仅在页面首次加载时才调用它，而不是在单击按钮或页面刷新时才调用它，这可能是

预先感谢您

Hi

I''m calling a method on form load that will populate a variable with a value, I want it to be called only when the page loads the First time not when a button is clicked or the page refreshes is that possible

Thank u in advance

推荐答案

protected void Page_Load(object sender, EventArgs e)
{

  string quoteNo;

  if(!IsPostBack)
  {
     quoteNo = Convert.ToString(Session["QuoteNo"]);
     if(string.IsNullOrEmpty(quoteNo)){
       // generate quoteNo and put it in a session variable
       quoteNo = GenerateQuoteNo();
       Session["QuoteNo"] = quoteNo; 
       // use your quoteNo
     }
  }
  else
  {
     quoteNo = Convert.ToString(Session["QuoteNo"]);
     // use your quoteNo
  }
}

尝试一下:

在页面的页面加载事件中.

Try this:

On the page load event of your page.

if(!IsPostBack)
{
//code for very first load//
}
else
{
//not first load//
}

希望对您有所帮助:)

hope it helps :)

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