按钮上的动态列表点击 [英] Dynamic List on Button Click

问题描述

我有一个文本框和两个按钮(添加和显示).
我希望当我在文本框中输入值后单击添加按钮时，该值应添加到显示按钮单击中将出现的列表中.

请指导我如何处理.
在此先感谢

Hi,

I have a textbox and two buttons (Add and Show).
I want that when I click on add button after entering a value in the textbox then that value should be added in list which would appear on Show button click.

Please guide me how I can handle this.
Thanks in Advance

推荐答案

添加文本框
为添加"按钮添加事件处理程序，从文本框中检索文本，存储在db
为显示按钮添加事件处理程序，从数据库中选择列表，渲染列表

更新:
如果您拥有相同的按钮以同时充当添加"和显示"按钮:
为添加/显示"按钮添加事件处理程序-如果文本为添加"，则从按钮检索文本；执行文本；如果文本为显示"，则执行显示功能.对于其余部分，请执行上述操作.

问候
Espen Harlinn

add textbox
add eventhandler for Add button, retrieve text from textbox, store in db
add eventhandler for Show button, select list from db, render list

Update:
If you wnat the same button to act as both an Add and a show button:
add eventhandler for Add/Show button - retrieve text from button if text is "Add" execute add functionality, if text is "Show" execute show functionality. For the rest do as above.

Regards
Espen Harlinn

尝试以下代码:

Try this code:

private ICollection<string> lst = new List<string>();
        private void btnAdd_Click(object sender, EventArgs e)
        {
            lst.Add(txtValue.Text);
        }
        private void btnShow_Click(object sender, EventArgs e)
        {
            listBox1.DataSource = lst;
            listBox1.DataBind();
        }

这里的变化很小，第二个按钮是显示/隐藏".它不仅应显示列表，而且当我再次单击它时，列表也应消失.我可以通过Ajax实现此功能吗?

Hi,
There is little change here the second button is Show/Hide. It should not only show the list but when i click it again the list should disappear. Can i achieve this functionality through ajax?

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