在按钮上单击以添加或删除面板 [英] on button click to add or remove panels

问题描述

如何添加和删除面板/更新面板或按钮单击。



为什么我无法在点击时创建另一个带文本框的面板，这是我的代码。



// aspx



< asp：Panel ID =Panel1runat =server >

< asp：PlaceHolder ID =PlaceHolder1runat =server>




< asp：按钮ID =bn_Addrunat =server文字=添加

onclick =bn_Add_Click>







日期自：
< asp：TextBox ID =tb_dateFromrunat =server>




日期：

< asp：TextBox ID =tb_dateTorunat =server>




ID：

< asp：TextBox ID =tb_IDrunat =server>





//aspx.cs



protected void Page_Load（object sender，EventArgs e）

{

if（Session [tt]！= null）

{

Panel tt = Session [tt]作为Panel;

地方Holder1.Controls.Add（tt）;

}

}



protected void bn_Add_Click（object sender， EventArgs e）

{

Panel tt = new Panel（）;

TextBox tb = new TextBox（）;

tb_dateFrom.Text =;

tb_dateTo.Text =;

tb_ID.Text =;

tt.Controls .Add（tb）;

PlaceHolder1.Controls.Add（tt）;

PlaceHolder1.Controls.Add（tt）;

Session [ tt] = tt;

}

解决方案

访问这里....



http://stackoverflow.com/questions/13888558/removing-dynamic-controls -from-panel [ ^

How do I add and remove panel / updatepanels or button click.

Why I couldn't create another panel with textbox on click, here is my code.

//aspx

<asp:Panel ID="Panel1" runat="server">
<asp:PlaceHolder ID="PlaceHolder1" runat="server">


<asp:Button ID="bn_Add" runat="server" Text="Add"
onclick="bn_Add_Click">




Date From :
<asp:TextBox ID="tb_dateFrom" runat="server">


Date To:
<asp:TextBox ID="tb_dateTo" runat="server">


ID:
<asp:TextBox ID="tb_ID" runat="server">


//aspx.cs

protected void Page_Load(object sender, EventArgs e)
{
if (Session["tt"] != null)
{
Panel tt = Session["tt"] as Panel;
PlaceHolder1.Controls.Add(tt);
}
}

protected void bn_Add_Click(object sender, EventArgs e)
{
Panel tt = new Panel();
TextBox tb = new TextBox();
tb_dateFrom.Text = "";
tb_dateTo.Text = "";
tb_ID.Text = "";
tt.Controls.Add(tb);
PlaceHolder1.Controls.Add(tt);
PlaceHolder1.Controls.Add(tt);
Session["tt"] = tt;
}

解决方案

visit here....

http://stackoverflow.com/questions/13888558/removing-dynamic-controls-from-panel[^]

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