Apr 06, 2011, 9:17 PM
[CLOSED] Unable to access dynamically created controls
Hi,
I have created label and textfield controls dynamically, and added to one container and that container added to panel. Now I am trying to access the value specified in textfield with button direct event, but textfield object is showing null. I tried by create control in every postback also. Here is the code
I have created label and textfield controls dynamically, and added to one container and that container added to panel. Now I am trying to access the value specified in textfield with button direct event, but textfield object is showing null. I tried by create control in every postback also. Here is the code
<%@ Page Language="C#" %>
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
if (!X.IsAjaxRequest)
{
this.tabSections.HideTabStripItem(pnlSection2);
this.tabSections.HideTabStripItem(pnlSection3);
//PopulateSection2Controls();
//PopulateSection3Controls();
}
PopulateSection2Controls();
}
public void ShowSectionSelected(Object sender, DirectEventArgs e)
{
Ext.Net.Button btn;
btn = (Ext.Net.Button)sender;
if (btn.ID == "btn2")
{
this.tabSections.UnhideTabStripItem(pnlSection2);
PopulateSection2Controls();
}
else
{
PopulateSection3Controls();
this.tabSections.UnhideTabStripItem(pnlSection3);
}
}
public void PopulateSection2Controls()
{
pnl1center.Items.Clear();
Ext.Net.Container c = new Ext.Net.Container();
Ext.Net.Label lblLabel = new Ext.Net.Label();
Ext.Net.TextField txtFld = new Ext.Net.TextField();
lblLabel.ID = "lblfiled1";
lblLabel.Text = "Field Label1";
txtFld.ID = "txtField1";
txtFld.EmptyText = "Enter Field value";
c.Items.Add(lblLabel);
c.Items.Add(txtFld);
//pnl1center.Items.Add(c);
c.AddTo(pnl1center);
this.tabSections.SetActiveTab(pnlSection2);
}
public void PopulateSection3Controls()
{
Ext.Net.Container c = new Ext.Net.Container();
Ext.Net.Label lblLabel = new Ext.Net.Label();
Ext.Net.TextField txtFld = new Ext.Net.TextField();
lblLabel.ID = "lblfiled2";
lblLabel.Text = "Field Label2";
txtFld.ID = "txtField2";
txtFld.EmptyText = "Enter Field value";
c.Items.Add(lblLabel);
c.Items.Add(txtFld);
//pnl2center.Items.Add(c);
c.AddTo(pnl2center);
this.tabSections.SetActiveTab(pnlSection3);
}
public void GetFieldValue(object sender, DirectEventArgs e)
{
TextField txtfld;
txtfld = (TextField)(FindControlRecursive(this,"txtField1"));
MessageBoxConfig msgCng = new MessageBoxConfig();
msgCng.Message = txtfld.Text;
msgCng.Buttons = MessageBox.Button.OK;
X.MessageBox.Show(msgCng);
}
public static Control FindControlRecursive(Control Root, string Id)
{
if (Root.ID == Id)
{
return Root;
}
foreach (Control Ctl in Root.Controls)
{
Control FoundCtl = FindControlRecursive(Ctl, Id);
if (FoundCtl != null)
{
return FoundCtl;
}
}
return null;
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<ext:ResourceManager ID="ResourceManager" runat="server" />
<ext:Viewport ID="vpReqFields" runat="server" Layout="border">
<Items>
<ext:TabPanel ID="tabSections" runat="server" ActiveTabIndex="0" Title="TabPanel"
Region="Center">
<Items>
<ext:Panel ID="pnlSection1" runat="server" Title="Section 1" Layout="Fit" BodyStyle="background-color:#d9d9d9">
</ext:Panel>
<ext:Panel ID="pnlSection2" runat="server" Title="Section 2" Layout="Border" BodyStyle="background-color:#d9d9d9" Closable="true" CloseAction="Hide">
<Items>
<ext:Panel ID="pnl1center" runat="server" Region="Center"></ext:Panel>
</Items>
<Buttons>
<ext:Button ID="btnGetText1" runat="server" Text="Get Text" OnDirectClick ="GetFieldValue"></ext:Button>
</Buttons>
</ext:Panel>
<ext:Panel ID="pnlSection3" runat="server" Title="Section 3" Layout="Border" BodyStyle="background-color:#d9d9d9" Closable="true" CloseAction="Hide">
<Items>
<ext:Panel ID="pnl2center" runat="server" Region="Center"></ext:Panel>
</Items>
</ext:Panel>
</Items>
</ext:TabPanel>
<ext:Panel ID="pnlButtons" runat="server" Region="South" Height="40" ButtonAlign="Center">
<Items>
</Items>
<Buttons>
<ext:Button ID="btn2" runat="server" Text="Show Section 2">
<DirectEvents>
<Click OnEvent="ShowSectionSelected">
<EventMask ShowMask="true" Msg="Loading..." />
</Click>
</DirectEvents>
</ext:Button>
<ext:Button ID="btn3" runat="server" Text="Show Section 3">
<DirectEvents>
<Click OnEvent="ShowSectionSelected">
<EventMask ShowMask="true" Msg="Loading..." />
</Click>
</DirectEvents>
</ext:Button>
</Buttons>
</ext:Panel>
</Items>
</ext:Viewport>
</form>
</body>
</html>
Last edited by Daniil; Apr 09, 2011 at 1:02 PM.
Reason: [CLOSED]
