动态添加控件javascript Asp.net C#
我试图在asp.net c#页面上添加控件,当用户单击“添加另一个”时。我正在使用表,并希望在该表中附加控件。还请让我知道,一旦表单提交到服务器,我将如何在代码中获取控件值 如果要添加动态客户端控件,它们将作为值出现在Request.Form对象中。您可以迭代此集合的内容。请注意,该表必须包含在表单元素中,否则它们将无法发布。这里是一个jQuery示例,希望对您有所帮助 ASPX:动态添加控件javascript Asp.net C#,javascript,asp.net,Javascript,Asp.net,我试图在asp.net c#页面上添加控件,当用户单击“添加另一个”时。我正在使用表,并希望在该表中附加控件。还请让我知道,一旦表单提交到服务器,我将如何在代码中获取控件值 如果要添加动态客户端控件,它们将作为值出现在Request.Form对象中。您可以迭代此集合的内容。请注意,该表必须包含在表单元素中,否则它们将无法发布。这里是一个jQuery示例,希望对您有所帮助 ASPX: <head id="Head1" runat="server"> <title>
<head id="Head1" runat="server">
<title>Controls</title>
<script src="Scripts/jquery-1.7.1.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function () {
$("#btnAdd").click(function () {
var field = $("#field").val();
var input = "<input name='parameters' id='field' type='text' />";
var newRow = "<tr><td>" + field + "</td><td>" + input + "</td></tr>";
$('#controls').append(newRow);
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input id="field" type="text" />
<input id="btnAdd" type="button" value="Add" />
<table id="controls" cellpadding="10" cellspacing="10">
</table>
<asp:Button ID="btnProcess" runat="server" Text="Process" OnClick="Process" />
</div>
</form>
</body>
<asp:TextBox ID="txtFieldName" runat="server"></asp:TextBox>
<asp:Button ID="btnAddControl" runat="server" Text="Add" OnClick="Add" />
<asp:Table EnableViewState="true" CellPadding="2" CellSpacing="2" BorderWidth="2" BorderStyle="Solid" GridLines="Both" ID="table"
runat="server">
<asp:TableHeaderRow>
<asp:TableHeaderCell Text="Field" />
<asp:TableHeaderCell Text="Value" />
</asp:TableHeaderRow>
</asp:Table>
<asp:Button ID="btnPost" runat="server" Text="Post" OnClick="Post" />
public List<string> rows = new List<string>();
protected void Page_Load(object sender, EventArgs e)
{
if (ViewState["Rows"] != null)
{
rows = (List<string>)ViewState["Rows"];
if (rows.Count > 0)
{
foreach (var row in rows)
{
TextBox textbox = new TextBox();
textbox.Width = 300;
table.Rows.Add(GetRow(row,textbox));
}
}
}
}
protected void Add(object sender, EventArgs e)
{
string row = txtFieldName.Text;
if (!String.IsNullOrEmpty(row))
{
rows.Add(txtFieldName.Text);
TextBox textbox = new TextBox();
textbox.Width = 300;
table.Rows.Add(GetRow(row, textbox));
ViewState["Rows"] = rows;
}
}
private TableRow GetRow(string text, WebControl txtName)
{
TableRow tr = new TableRow();
TableCell cell1 = new TableCell();
cell1.Text = text;
TableCell cell2 = new TableCell();
cell2.Controls.Add(txtName);
tr.Cells.Add(cell1);
tr.Cells.Add(cell2);
return tr;
}
protected void Post(object sender, EventArgs e)
{
if (table.Rows.Count > 0)
{
System.Diagnostics.Debugger.Break();
//i=1 because we want to skip the header row
for (int i = 1; i < table.Rows.Count; i++)
{
//Examine the values and do further processing...
string field = table.Rows[i].Cells[0].Text;
string value = ((TextBox)table.Rows[i].Cells[1].Controls[0]).Text;
}
}
}
代码隐藏:
<head id="Head1" runat="server">
<title>Controls</title>
<script src="Scripts/jquery-1.7.1.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function () {
$("#btnAdd").click(function () {
var field = $("#field").val();
var input = "<input name='parameters' id='field' type='text' />";
var newRow = "<tr><td>" + field + "</td><td>" + input + "</td></tr>";
$('#controls').append(newRow);
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input id="field" type="text" />
<input id="btnAdd" type="button" value="Add" />
<table id="controls" cellpadding="10" cellspacing="10">
</table>
<asp:Button ID="btnProcess" runat="server" Text="Process" OnClick="Process" />
</div>
</form>
</body>
<asp:TextBox ID="txtFieldName" runat="server"></asp:TextBox>
<asp:Button ID="btnAddControl" runat="server" Text="Add" OnClick="Add" />
<asp:Table EnableViewState="true" CellPadding="2" CellSpacing="2" BorderWidth="2" BorderStyle="Solid" GridLines="Both" ID="table"
runat="server">
<asp:TableHeaderRow>
<asp:TableHeaderCell Text="Field" />
<asp:TableHeaderCell Text="Value" />
</asp:TableHeaderRow>
</asp:Table>
<asp:Button ID="btnPost" runat="server" Text="Post" OnClick="Post" />
public List<string> rows = new List<string>();
protected void Page_Load(object sender, EventArgs e)
{
if (ViewState["Rows"] != null)
{
rows = (List<string>)ViewState["Rows"];
if (rows.Count > 0)
{
foreach (var row in rows)
{
TextBox textbox = new TextBox();
textbox.Width = 300;
table.Rows.Add(GetRow(row,textbox));
}
}
}
}
protected void Add(object sender, EventArgs e)
{
string row = txtFieldName.Text;
if (!String.IsNullOrEmpty(row))
{
rows.Add(txtFieldName.Text);
TextBox textbox = new TextBox();
textbox.Width = 300;
table.Rows.Add(GetRow(row, textbox));
ViewState["Rows"] = rows;
}
}
private TableRow GetRow(string text, WebControl txtName)
{
TableRow tr = new TableRow();
TableCell cell1 = new TableCell();
cell1.Text = text;
TableCell cell2 = new TableCell();
cell2.Controls.Add(txtName);
tr.Cells.Add(cell1);
tr.Cells.Add(cell2);
return tr;
}
protected void Post(object sender, EventArgs e)
{
if (table.Rows.Count > 0)
{
System.Diagnostics.Debugger.Break();
//i=1 because we want to skip the header row
for (int i = 1; i < table.Rows.Count; i++)
{
//Examine the values and do further processing...
string field = table.Rows[i].Cells[0].Text;
string value = ((TextBox)table.Rows[i].Cells[1].Controls[0]).Text;
}
}
}
public List rows=new List();
受保护的无效页面加载(对象发送方、事件参数e)
{
如果(ViewState[“行”!=null)
{
行=(列表)视图状态[“行”];
如果(rows.Count>0)
{
foreach(行中的变量行)
{
TextBox TextBox=新建TextBox();
textbox.Width=300;
table.Rows.Add(GetRow(row,textbox));
}
}
}
}
受保护的无效添加(对象发送方,事件参数e)
{
字符串行=txtFieldName.Text;
如果(!String.IsNullOrEmpty(行))
{
添加(txtFieldName.Text);
TextBox TextBox=新建TextBox();
textbox.Width=300;
table.Rows.Add(GetRow(row,textbox));
视图状态[“行”]=行;
}
}
private TableRow GetRow(字符串文本,WebControl txtName)
{
TableRow tr=新的TableRow();
TableCell cell1=新的TableCell();
单元格1.文本=文本;
TableCell cell2=新的TableCell();
cell2.Controls.Add(txtName);
tr.Cells.Add(cell1);
tr.Cells.Add(cell2);
返回tr;
}
受保护的无效帖子(对象发送者、事件参数)
{
如果(table.Rows.Count>0)
{
System.Diagnostics.Debugger.Break();
//i=1,因为我们想跳过标题行
对于(int i=1;i
是否可以通过服务器添加,我曾经在客户端添加过。但在这里,我想在服务器端这样做,这样我就可以将codebehindOnly中的所有值作为repost的一部分来获取,从UI的角度来看,这很笨拙。通过使用Request.Form,您可以获得代码隐藏中的值。您可以使用更新面板,但它们实际上是一个装饰好的重新发布,造成了大量服务器端的浪费。是的,这就是我想到的javascript。