本文介绍了动态控件不会在回发中生成。的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我在点击列表视图项目时有一个radlistview我正在创建动态控件。现在我有两个控件文本框和下拉菜单。文本框控件在列表视图的每次单击时都能正常工作，但下拉列表只生成一次。在每次点击我想生成一个控件，但没有这样做。有人可以建议我在我的代码中做错了吗。
我尝试过：
I have a radlistview on click of list view items i am creating dynamic controls. Present i have two controls text box and drop down. Text box control works fine on every click of list view but drop down is generating only once. On every click i want to generate a control, but fail to do so. Can some suggest me what i have done wrong in my code.
What I have tried:
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
RadListView1.DataSource = GetDatatable();
RadListView1.DataBind();
}
else
{
RecreateControls("rtb", "RadTextBox");
RecreateControls("rddl", "RadDropDownList");
}
}
public DataTable GetDatatable()
{
DataTable dt = new DataTable();
dt.Columns.Add("Label");
dt.Rows.Add("RadTextBox");
dt.Rows.Add("RadDropDownList");
return dt;
}
protected void RadAjaxManager1_AjaxRequest(object sender,
Telerik.Web.UI.AjaxRequestEventArgs e)
{
string commandText = e.Argument.ToString().Trim();
string[] splitdata = commandText.Split('&');
commandText = splitdata[0];
string controlName = splitdata[1];
switch (controlName)
{
case "RadTextBox":
int cnt1 = FindOccurence("rtb") + 1;
DynamicControls dcTextBox = new DynamicControls();
TableCell txtlblRad = dcTextBox.Controlscreation("RadLabel", "", cnt1, cnt1, "Text Box:", "", 0);
TableCell txtRad = dcTextBox.Controlscreation("RadTextBox", "", cnt1, cnt1, "", "", 0);
TableRow txtRow = new TableRow();
txtRow.Cells.Add(txtlblRad);
txtRow.Cells.Add(txtRad);
Table1.Rows.Add(txtRow);
break;
case "RadDropDownList":
int cnt4 = FindOccurence("rddl") + 1;
DynamicControls dcRadDropDown = new DynamicControls();
TableCell radDropDownlbl = dcRadDropDown.Controlscreation("RadLabel", "", cnt4, cnt4, "RDDL:", "", 0);
TableCell radDropDown = dcRadDropDown.Controlscreation("RadDropDownList", "", cnt4, cnt4, "", "", 0);
TableRow dropdownRow = new TableRow();
dropdownRow.Cells.Add(radDropDownlbl);
dropdownRow.Cells.Add(radDropDown);
Table1.Rows.Add(dropdownRow);
break;
}
}
private void RecreateControls(string ctrlPrefix, string ctrlType)
{
string[] ctrls = Request.Form.ToString().Split('&');
int cnt = FindOccurence(ctrlPrefix);
if (cnt > 0)
{
for (int k = 1; k <= cnt; k++)
{
for (int i = 0; i < ctrls.Length; i++)
{
if (ctrls[i].Contains(ctrlPrefix + "_" + k.ToString()))
{
if (ctrlType == "RadTextBox")
{
DynamicControls dcTextBox = new DynamicControls();
TableCell txtlblRad = dcTextBox.Controlscreation("RadLabel", "", k, k, "TextBox:", "", 0);
TableCell txtRad = dcTextBox.Controlscreation("RadTextBox", "", k, k, "", "", 0);
TableRow txtRow = new TableRow();
txtRow.Cells.Add(txtlblRad);
txtRow.Cells.Add(txtRad);
Table1.Rows.Add(txtRow);
}
if (ctrlType == "RadDropDownList")
{
DynamicControls dcRadDropDown = new DynamicControls();
TableCell radDropDownlbl = dcRadDropDown.Controlscreation("RadLabel", "", k, k, "RDDL :", "", 0);
TableCell radDropDown = dcRadDropDown.Controlscreation("RadDropDownList", "", k, k, "", "", 0);
TableRow dropdownRow = new TableRow();
dropdownRow.Cells.Add(radDropDownlbl);
dropdownRow.Cells.Add(radDropDown);
Table1.Rows.Add(dropdownRow);
}
break;
}
}
}
}
}
private int FindOccurence(string substr)
{
string reqstr = Request.Form.ToString();
return (((reqstr.Length - reqstr.Replace(substr, "").Length) / substr.Length) / 2);
}
加价：
Markup:
<telerik:RadListView ID="RadListView1" runat="server" RenderMode="Lightweight" DataKeyNames="Label" ClientDataKeyNames="Label" ItemPlaceholderID="ListViewPlaceHolder1" EnableViewState="false" Width="50%">
<EmptyDataTemplate>
</EmptyDataTemplate>
<LayoutTemplate>
<div class="RadListView RadListView_Silk">
<table id="orgcharttable" class="layoutTable" width="100%">
<tr>
<td colspan="3" class="nopadding">
<asp:PlaceHolder ID="ListViewPlaceHolder1" runat="server"></asp:PlaceHolder>
</td>
</tr>
</table>
</div>
</LayoutTemplate>
<ItemTemplate>
<div id="divHighlight" class="ListViewStyle" onclick="SelectControl(this,event);">
<div style="vertical-align: top; width: 100%">
<table>
<tr id="tr1">
<td colspan="2" class="tdnormal">
<telerik:RadLabel ID="lbl1" runat="server" Text='<%# Bind("Label")%>' Font-Bold="true" CssClass="ItemHeaderStyle"></telerik:RadLabel>
</td>
</tr>
<tr id="tr2">
<td rowspan="2" colspan="1" style="width: 5%">
<telerik:RadBinaryImage ID="rbimgWizard" runat="server" Width="80px" Height="80px" ResizeMode="Fit" CssClass="image" ImageUrl="../../Images/SCREEN.png" />
</td>
</tr>
</table>
</ItemTemplate>
</telerik:RadListView>
<asp:UpdatePanel ID="Panel1" runat="server" UpdateMode="Conditional" EnableViewState="false">
<ContentTemplate>
<asp:UpdatePanel ID="Panel2" runat="server" UpdateMode="Conditional" EnableViewState="false">
<ContentTemplate>
<asp:Table ID="Table1" runat="server"></asp:Table>
</ContentTemplate>
</asp:UpdatePanel>
</ContentTemplate>
</asp:UpdatePanel>
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