事件"System.Web.UI.WebControls.Button.Click"只能出现在+ =或-=的左侧 [英] The event 'System.Web.UI.WebControls.Button.Click' can only appear on the left hand side of += or -=

问题描述

嗨！我想在单击一个按钮时使一个按钮不可见.但是我收到此错误:``System.Web.UI.WebControls.Button.Click''事件只能出现在左侧的+ =或-= ...
这是我正在使用的代码.

Hi!I want to make invisible a button when one button is clicked.But I am getting this error:The event ''System.Web.UI.WebControls.Button.Click'' can only appear on the left hand side of += or -=...
This is the code I am using.

protected void Page_Load(object sender, EventArgs e)
       {
          if (IsPostBack)
           {
              
               if (LoginButton.Click)
               {
                   Buttonfill.Visible = false;
               }

           }
       }
       #endregion
       private bool LoginButton_Click()
       {
           return true;
       }

帮助解决此问题.请提供有效的代码.

Help fixing this.Give a valid code please.

推荐答案

您必须使用按钮的OnClick事件.
在aspxfile中，您可以在asp:Button声明中说:
OnClick ="Buttonfill_OnClick"

在文件后面的代码中
您创建一个名为:
的方法

You have to use the OnClick event of the button.
In the aspxfile you can say in the asp:Button declaration:
OnClick="Buttonfill_OnClick"

in the code behind file
you create a method called:

protected void Buttonfill_OnClick(object sender, EventArgs e)
{
Buttonfill.Visible = false;

}

您必须删除代码

you have to remove the code

if (LoginButton.Click)
               {
                   Buttonfill.Visible = false;
               }

通过您的Page_Load方法

from your Page_Load method

尝试一下:

Try this:

protected void Page_Load(object sender, EventArgs e)
       {
          LoginButton.Click += new System.Web.UI.LoginButtonClickEventHandler(LoginButton_Click);

           
       }
protected void LoginButton_Click(object sender, EventArgs e)
{
Buttonfill.Visible = false;
}

希望对您有所帮助:)

hope it helps :)

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