我想在点击它时更改链接的颜色 [英] I want to change the color of link when click on it

问题描述

我在c＃中使用代码来打印链接。请建议如何在访问时更改链接的颜色。



我尝试过：

我在c＃中使用代码来打印链接。请建议如何在访问时更改链接的颜色。 
 
 
< pre> for（int ar = 0; ar< arrProcess.Length; ar ++）
 {
 LinkBut​​ton lnk = new LinkBut​​ton（）; 
 lnk.ID =lnk+ listItemIds; 
 lnk.ClientIDMode = ClientIDMode.Static; 
 lnk.Click + = new System.EventHandler（this.colorClick）; 
 lnk.Text = arrProcess [ar]; 
 lnk.Attributes.Add（onClick，changeControlStyle（'+ lnk.ClientID +'）;）; //这是为了防止页面重新加载$ ​​b $ b listItemIds ++; 
 PlaceHolder1.Controls.Add（lnk）; //在PlaceHolder中添加LinkBut​​ton 
 //PlaceHolder1.Controls.Add(new LiteralControl（< br />））; 
} 

解决方案

我找不到ASP.NET LinkBut​​ton的现场演示，看看它的HTML输出是什么。但是，有两种可能性。



A）LinkBut​​ton的HTML输出是标签。在这种情况下使用a：Visited {...} CSS类，这是一个很好的教程：https：//css-tricks.com/almanac/selectors/v/visited/



B）如果LinkBut​​ton生成标签，那么我认为没有可以应用的直接CSS规则集。在这种情况下，您可能需要编写一些JS代码来处理这种情况。这是一个例子：https：//stackoverflow.com/questions/54545567/how-to-change-the-background-color-of-a-visited-button-in-css



*我对ASP.NET的了解非常过时，但您可能希望使用OnClientClick（）将JS代码连接到这些按钮：https：//docs.microsoft.com/en-us/dotnet /api/system.web.ui.webcontrols.button.onclientclick?view=netframework-4.8

i am using code in c# to print the link. please suggest how to change the color of link when visited on it.

What I have tried:

i am using code in c# to print the link. please suggest how to change the color of link when visited on it.


<pre> for (int ar = 0; ar < arrProcess.Length; ar++)
                    {
                        LinkButton lnk = new LinkButton();
                        lnk.ID = "lnk" + listItemIds;
                        lnk.ClientIDMode = ClientIDMode.Static;
                        lnk.Click += new System.EventHandler(this.colorClick);
                        lnk.Text = arrProcess[ar];
                        lnk.Attributes.Add("onClick", "changeControlStyle('" + lnk.ClientID + "');"); //This is to prevent the page to reload
                        listItemIds++;
                        PlaceHolder1.Controls.Add(lnk); // Adding the LinkButton in PlaceHolder
                        //PlaceHolder1.Controls.Add(new LiteralControl("<br />"));
                    }

解决方案

I cannot find a live demo of ASP.NET LinkButton to see what's the HTML output for it. But, there are 2 possibilities.

A) The HTML output of LinkButton is an tag. In this case use the a:Visited{...} CSS class, here is a good tutorial: https://css-tricks.com/almanac/selectors/v/visited/

B) If LinkButton generates a tag, then I don't think there is a direct CSS rule set that you can apply. In that case, you may need to write some JS code to handle the situation. Here is an example: https://stackoverflow.com/questions/54545567/how-to-change-the-background-color-of-a-visited-button-in-css

* My knowledge on ASP.NET is very outdated, but you may want to use OnClientClick() to wire the JS code to these buttons: https://docs.microsoft.com/en-us/dotnet/api/system.web.ui.webcontrols.button.onclientclick?view=netframework-4.8

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