Web Forms :: Dynamic Usercontrol Unload By Itself

Jun 11, 2010

I am adding a usercontrol dynamically in my page, problum is this when i click the save button on the user control it unload itself, how do i sustail on the page untill i himself unload it??

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Web Forms :: UserControl Removed When Load Dynamic One

May 20, 2010

in my aspx page i have some controls loadded dynamic and other one loaded static, when i am loading the user control dynamically,the dynamic usercontrols loaded successfully, but all static control inside page will be removed! i load the user control using the bellow code inside PlaceHolder. this is my code in aspx page:

[Code]....

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Web Forms :: Dynamic UserControl - No Events (delete - Update)

Jul 22, 2010

for my dynamic user control, i am trying to do any event from that control (delete, update .... etc) but it disappeard when i make any event! this the code in the page to load it dynamically:

[Code]....

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Jan 15, 2011

I have dynamic button in tab panel. I want to load a usercontrol through this button in tab panel. but it does not work!!! would some body please tell me why is that happen? I also debug my code and it works correctlly but user control does not load in tab panel.

[Code]....

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Web Forms :: Nested Dynamic UserControl Drops Value Of Textbox - Not Dropdownlist?

Aug 12, 2010

I have a webUserControl that is nested inside of another dynamically loaded usercontrol. The nested user control (harddrive) can have multiple iterations, see below for hierarchy When a postback occurs the value in the dropdownlist inside of the nested userControl is saved, but the data in the textboxes is lost. any ideas?

Hierarchy:
insert.aspx
[^--loads] asset.ascx
[^--- loads] harddrive.ascx -- there can be multiple instances of this control inside of the asset.ascx user control

ASPX page code (hosts core dynamic user controls)

[Code]....

ASPX Code behind

[Code]....

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Web Forms :: Dynamic Usercontrol Loading When Using ParseControl() Method In VS2008

Oct 12, 2010

In the process of migrating an old VS2003 web app to VS2008, I'm running into this issue and haven't been able to find a resolution. Sample code: "Default.aspx" has a PlaceHolder(ToolHeader). In the Page_Load(), we dynamically load a user control passing in the virtual path to a helper method [public Control ParseUserControl(string virtualPath)]. This reads the content from the physical path, returns
a Control from ParseControl() method. I immediately get the following error when I open the default.aspx page in browser.

Parser Error

Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately. Parser Error Message: Could not load type 'DynamicUC.UcControl'.

Source Error:
Line 1: <%@ Control AutoEventWireup="true" CodeBehind="UcControl.ascx.cs" Inherits="DynamicUC.UcControl"&nbsp; %>

Can't figure out why it can't load the type. Namespaces are looking right. I try removing the Inherits="DynamicUC.UcControl" attribute from the "ucControl.ascx", it loads the page fine. Also, this control is a simple one and has no code behind. There are others with actual code behind. They won't work if I remove the Inherits attribute.

[Code]..........

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Mar 16, 2011

I have what is probably a basic question but I do not understand if/why there is a difference. I have a simple asp.net page with a staticly created DropDownList and Panel control. The user can select one of three options if the drop down (Employee, Company, Address) which should load the respective custom UserControl into the panel below. By default, I have the Employee control selected in the drop down and it should be displayed on the intial Page Load (!Page.IsPostBack).

If I do the following it performs the desired behavior on the intial load:

[Code]....

If I try the following, the User Control does not appear on the initial page load:

[Code]....

I noticed if I do it with a textbox instead of a UserControl, it works however:

[Code]....

I assume there is some sort of behavioral difference in the way the loading is done between a UserControl and WebControl.

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Jan 19, 2011

I need to load a web user control dynamically.

Looking at [URL] it states that the page lifecycle events are not fired.

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VS 2010 Dynamic UserControl - Postback Event Not Firing

Feb 8, 2012

I have a page where I add a dynamic user control in the Page_Load event based on criteria.

The control is a simple form with a save button. The problem is the _Click event never fires for the button. It will postback the main page the control is within, but not the code behind for the control...so I never get the button click even, and therefor can't execute the save code.

Tried it in the init, tried adding the control to a placeholder, tried a lot of various things but nothing seems to work.

Code:
If cb_business_profile.Items.Count = 0 Then
Dim u_pnl_content As UpdatePanel = Page.FindControl("u_pnl_content")
u_pnl_content.ContentTemplateContainer.Controls.Clear()

Dim business_profile_detail As Control = LoadControl("~/controls/business_profile_detail.ascx")

[Code] ....

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May 27, 2010

I created a customDropdown usercontrol with Events and It worked fine.

Now I stored the path of the ascx file in the database table and i want to Load the ascx file and handle the Events dynamically in an aspx page.

To Load the usercontrol and access the public properties and method, I need to know the object i am trying to load, right?

For Example

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But I dont want to hardcode objectType "FeaturedDDL", coz i dont have that stored in my Database field.

Since I am loading the usercontrol by getting the path and name of the usercontrol from the database table,how will I know the ObjectType at that time?

How to accomplish that and also how to handle the events for these type of situation?

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Feb 7, 2011

When my asp.net aspx page unloads i am trying to check if the current session is expired. I have this code in the Page_unlaod and i get a "Response is not available in this context" error. What is the problem placing this code in the Page_unlaod?

[Code]....

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Here are the events that are only called after the checkbox has been ticked.

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Mar 4, 2011

Is this possible and how?

I would like a single button that will fire a loading of a user control into a panel to simulate a wizard-type functionality.

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Jan 13, 2010

I'm developing an ASP.NET Web application with WebForms and C#.
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<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<div id="divBody">
<div id="divHeader">
<asp:Button ID="Edit" runat="server" Text="Editar" onclick="Edit_Click" />
</div>
<div id="leftColumn">
<asp:UpdatePanel ID="UpdatePanelLeft" runat="server">
<ContentTemplate>
<asp:Label ID="TryText" runat="server"></asp:Label>
<asp:TreeView ID="DestinationTree" runat="server" ImageSet="Simple">
<ParentNodeStyle Font-Bold="False" />
<HoverNodeStyle Font-Underline="True" ForeColor="#5555DD" />
<SelectedNodeStyle Font-Underline="True" ForeColor="#5555DD"
HorizontalPadding="0px" VerticalPadding="0px" />
<Nodes>
<asp:TreeNode Text="Raiz" Value="Raiz">
<asp:TreeNode Text="Destino_1" Value="Destino_1">
<asp:TreeNode Text="Punto_1_1" Value="Punto_1_1">
<asp:TreeNode Text="Contenido_1_1_1" Value="Contenido_1_1_1"></asp:TreeNode>
<asp:TreeNode Text="Contenido_1_1_2" Value="Contenido_1_1_2"></asp:TreeNode>
</asp:TreeNode>
<asp:TreeNode Text="Punto_1_2" Value="Punto_1_2">
<asp:TreeNode Text="Contenido_1_2_1" Value="Contenido_1_2_1"></asp:TreeNode>
</asp:TreeNode>
</asp:TreeNode>
<asp:TreeNode Text="Destino_2" Value="Destino_2">
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<asp:TreeNode Text="Punto_2_2" Value="Punto_2_2">
<asp:TreeNode Text="Contenido_2_2_1" Value="Contenido_2_2_1"></asp:TreeNode>
</asp:TreeNode>
</asp:TreeNode>
</asp:TreeNode>
</Nodes>
<NodeStyle Font-Names="Tahoma" Font-Size="10pt" ForeColor="Black"
HorizontalPadding="0px" NodeSpacing="0px" VerticalPadding="0px" />
</asp:TreeView>
</ContentTemplate>
</asp:UpdatePanel>
</div>
<div id="rightColumn">
<asp:UpdatePanel ID="UpdatePanelRight" runat="server">
<ContentTemplate>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Edit" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
</div>
</div>
</form>
</body>

It is a header with two columns: On left column there is a TreeView, and on the left there is nothing (now there is a label to try the thing that I want to do).

When user select a node on treeview a click on Edit button. Code for click event is:

protected void Edit_Click(object sender, EventArgs e)
{
if ((DestinationTree.SelectedNode != null) &&
(DestinationTree.SelectedNode.Depth > 0))
{
BaseControl baseControl = new BaseControl();
UpdatePanelRight.ContentTemplateContainer.Controls.Clear();
switch (DestinationTree.SelectedNode.Depth)
{
case 1:
baseControl = (BaseControl)LoadControl("~/DynamicControls/Control1.ascx");
break;
case 2:
baseControl = (BaseControl)LoadControl("~/DynamicControls/Control2.ascx");
break;
case 3:
baseControl = (BaseControl)LoadControl("~/DynamicControls/Control3.ascx");
break;
}
UpdatePanelRight.ContentTemplateContainer.Controls.Add(baseControl);
}
}

Depending on node selected depth is going to load a custom control dynamically. It works, but when the user select another node on treeview, the original label is reloaded on right column.

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Public Class PMRADGrid
Inherits System.Web.UI.GridView
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[code]...

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I load a C++ DLL using DLLImport in my C# ASP.Net web application. The DLL basically reads some CSV files, and manipulates them and creates new files.

After I ran the method successfully, and run it again then I get C++ exception back.

I want to unload the C++ DLL from the website so a user can re- load the DLL and re run the method. Do you know how to either eliminate this error or get rid of this error message so the DLL can be unloaded after its run?

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Jul 17, 2010

This is page load

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
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private string _sname;
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Apr 6, 2010

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I have a client register startup script like so:

" " +
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[code]...

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Oct 6, 2010

In our WCF service we use a third party product (product C) for querying an external database. We can not change the code in this third party product.

The library is imported for exemple via Declare Function vbPriopti Lib "PRIMCSAM.dll" (ByVal a As String, ByVal b As Integer) As Integer Declare Function vbConnectionClose Lib "PRIMCSAM.dll" () As Integer etc

The problem we face is that the product C keep connections in memory and refuses more connections from the same user/ip address. And their "vbConnectionClose" subroutine does not do proper clean up, something is left in memory and we can therefore not do a new connection.

The only thing to do a new connection is to restart the wcf servcie appliaction on the web server. But I do not want to close my whole app and restart it because of errors in the product C, instead it would be better to just reload the imported dll again?!

What is the easiest way to handle this problem? Restart/close the imported dll? Work with appdomain?

I tried the FreeLibrary method but it did not work, [URL]

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Aug 12, 2010

I have 2 usercontrol in my .aspx page.

usercontorl1:

<asp:textbox id="txt" runat="server"></asp:textbox>

<asp:button id="btn" runat="server" text="send" />

usercontrol2:

Here I have gridview control with checkbox for selection of one or two records. Have one button and when clicking this , i need to get the selected records values and assign this values to the textbox which is in usercontrol1.

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Mar 25, 2010

I am using report viewer to show reports.

how to unload data from report viewer.

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C# - Prevent Unload Controls Loaded Dynamically

Jan 13, 2010

I'm developing an ASP.NET Web application with WebForms and C#.

I have this aspx page:

<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<div id="divBody">
<div id="divHeader">
<asp:Button ID="Edit" runat="server" Text="Editar" onclick="Edit_Click" />
</div>
<div id="leftColumn">
<asp:UpdatePanel ID="UpdatePanelLeft" runat="server">
<ContentTemplate>
<asp:Label ID="TryText" runat="server"></asp:Label>
<asp:TreeView ID="DestinationTree" runat="server" ImageSet="Simple">
<ParentNodeStyle Font-Bold="False" />
<HoverNodeStyle Font-Underline="True" ForeColor="#5555DD" />
<SelectedNodeStyle Font-Underline="True" ForeColor="#5555DD"
HorizontalPadding="0px" VerticalPadding="0px" />
<Nodes>
<asp:TreeNode Text="Raiz" Value="Raiz">
<asp:TreeNode Text="Destino_1" Value="Destino_1">
<asp:TreeNode Text="Punto_1_1" Value="Punto_1_1">
<asp:TreeNode Text="Contenido_1_1_1" Value="Contenido_1_1_1"></asp:TreeNode>
<asp:TreeNode Text="Contenido_1_1_2" Value="Contenido_1_1_2"></asp:TreeNode>
</asp:TreeNode>
<asp:TreeNode Text="Punto_1_2" Value="Punto_1_2">
<asp:TreeNode Text="Contenido_1_2_1" Value="Contenido_1_2_1"></asp:TreeNode>
</asp:TreeNode>
</asp:TreeNode>
<asp:TreeNode Text="Destino_2" Value="Destino_2">
<asp:TreeNode Text="Punto_2_1" Value="Punto_2_1"></asp:TreeNode>
<asp:TreeNode Text="Punto_2_2" Value="Punto_2_2">
<asp:TreeNode Text="Contenido_2_2_1" Value="Contenido_2_2_1"></asp:TreeNode>
</asp:TreeNode>
</asp:TreeNode>
</asp:TreeNode>
</Nodes>
<NodeStyle Font-Names="Tahoma" Font-Size="10pt" ForeColor="Black"
HorizontalPadding="0px" NodeSpacing="0px" VerticalPadding="0px" />
</asp:TreeView>
</ContentTemplate>
</asp:UpdatePanel>
</div>
<div id="rightColumn">
<asp:UpdatePanel ID="UpdatePanelRight" runat="server">
<ContentTemplate>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Edit" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
</div>
</div>
</form>
</body>

It is a header with two columns: On left column there is a TreeView, and on the left there is nothing (now there is a label to try the thing that I want to do).

When user select a node on treeview a click on Edit button. Code for click event is:

protected void Edit_Click(object sender, EventArgs e)
{
if ((DestinationTree.SelectedNode != null) &&
(DestinationTree.SelectedNode.Depth > 0))
{
BaseControl baseControl = new BaseControl();
UpdatePanelRight.ContentTemplateContainer.Controls.Clear();
switch (DestinationTree.SelectedNode.Depth)
{
case 1:
baseControl = (BaseControl)LoadControl("~/DynamicControls/Control1.ascx");
break;
case 2:
baseControl = (BaseControl)LoadControl("~/DynamicControls/Control2.ascx");
break;
case 3:
baseControl = (BaseControl)LoadControl("~/DynamicControls/Control3.ascx");
break;
}
UpdatePanelRight.ContentTemplateContainer.Controls.Add(baseControl);
}
}

Depending on node selected depth is going to load a custom control dynamically. It works, but when the user select another node on treeview, the original label is reloaded on right column.

How can I prevent this?

View 2 Replies







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