[英]How to add dynamic controls with different ID and having a different Click event in asp.net on a button click?
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
ViewState["i"] = 1;
}
}
protected void Button1_Click(object sender, EventArgs e)
{
int i = (int)ViewState["i"];
Button MyButton = new Button();
MyButton.ID = "MyButton" + i;
divContainer.Controls.Add(MyButton);
i++;
ViewState["i"] = i;
}
每当我单击按钮以在id为“ descriptionBox”的div中添加新控件时,最后创建的控件就会从该div中删除,而是改为创建新控件。我想在每次单击时创建一个新控件并将其添加到该分区
当您使用Asp控件时,每次添加控件时它将在服务器端呈现,它刷新页面并且以前的内容消失了,您可以使用Page_PreInit
事件
protected void Page_PreInit(object sender, EventArgs e)
{
Request.Form.AllKeys.Where(key => key.Contains("button name")).ToList();
}
保留或重新创建现有控件以获取更多信息的事件,请查看链接https://www.aspsnippets.com/Articles/ASPNet-Dynamic-Controls-ViewState-Retain-state-for-dynamically-created-controls -PostBack.aspx
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