I have a usercontrol that is in an asp.net page that contains a button. The event on the button does a simple response.direct all is fine if the page doesnt contain a query string however if the page contains a query string. e.g. default.aspx?id=12345 then the postback doesnt occur on the button.
Is this a common issue? what do I need to do to enable postback on the button if there is a querystring?
In my asp.net web i used the following code:
<asp:LinkButton ID="LinkButton1" runat="server"
PostBackUrl="unitlink.aspx?coy=tata">Tata</asp:LinkButton>
The data is correctly displaying in gridview.
There is a label (label1.text) in the same page i want to display the coy in that label along with the gridview....
I have a page with an UpdatePanel with a UserControl in it. That UserControl contains a GridView with a nested UserControl that seems to disappear when the parent UserControl is rebound. I cannot for the life of me figure out why the child UserControl disappears. The code works beautifully on the first load, but any partial postback causes the "Pick" UserControl to disappear.
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I have several usercontrols which are loaded based on business logic.However, all of them have webcontrols whose selected/entered value needs to be accessible in parent page on an event.Since there can be any combination of UserControls, I do not want to load all the UserControls in the Parent Page, since they are heavy.
I would like to load only those controls which are supposed to appear on the page, yet access the value from the usercontrol which caused the postback. (I would rather not access using Request.Form) (ViewState is open, but unsuccessful to store value in parent page's viewstate in onClick)Here is a sample scenario
Page: Home
Dynamically Loads: UserControls1
UserControls has TextBox tb and Button btn, causing onClick
When btn is clicked, I want to get value of tb in parent page on PostBack, Page creates UserControl2
I have two dropdownlists on my page that are related to one another, and are built dynamically. I did not write the original code, but I believe it is using AJAX so the whole page doesn't postback when the ddl selection changes. The first ddl is Status and the second is ContractType. Here is the code for the event handler:
Code:
protected void Status_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
DropDownList status = (DropDownList)sender;
string selectedStatusId = status.SelectedItem.Value;
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Here is some of my debugging info:
? view.Count
4
? view.Table.Rows.Count
20
? contractTypeDropDown.SelectedValue
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I commented out the event handler since this snapshot, just to see what would happen, but when I was hitting it you can see what ex.Message was. I don't understand why it says the SelectedValue is invalid when I see the selected value is "E " and that is one of the four items in the ddl.
here is my simlified code default.aspx;
<script runat="server">
Protected Sub GridView1_RowCommand(ByVal sender As Object, ByVal e As GridViewCommandEventArgs)
Dim strFirstName As String = DirectCast(GridView1.FooterRow.FindControl("txtCompanyName"), TextBox).Text()
If e.CommandName = "Add" Then
companiesGridViewSDS.InsertParameters("CompanyName").DefaultValue = strFirstName
companiesGridViewSDS.Insert()
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i need to bind the menu dynamically,i put the menu in the UserControl and i pass to it QueryString["menuid"]or example if i put in hyperlink [URL]bind all the submenus based on the menuid=1 i got the error when i did this HierarchicalDataBoundControl only accepts data sources that implement IHierarchicalDataSource or IHierarchicalEnumerable.Description:An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidOperationException: HierarchicalDataBoundControl only accepts data sources that implement IHierarchicalDataSource or IHierarchicalEnumerable.Source Error:
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Source File: c:EcommerceFrontEnd.master.cs Line: 19 Stack Trace:
I have a particular scenario and I would like to know how I can implement it in the most efficient way. I also have some queries related to this. The application is a AJAX 1.0-Enabled ASP.NET 2.0 Web application.
I have a link, which when clicked I need to show a pop-up div. The contents of the div will be displayed using a usercontrol. The usercontrol will display the contents based on a query string value.
I would like to know:
1. How can I implement this in the most effecient way. I don't want to use a separate page on which I will have the usercontrol and then display the page in the div.
2. Suppose I call a JS function ShowDiv() on the click of the link, to display the pop-up div. Say, I call the function this way ShowDiv('querystring'). Now how will I pass the value 'querystring' to my usercontrol.
In my project when i click any button or linkbutton, it doesnt fire any event or doesnt postback.
It was working fine but now it hv problem like this.
I think i have changed some settings by mistake.
I have many controls like dropdown, radiobuttonlist, etc on my page and I put all these controls inside the update panel so that the page doesn't look to be posting back when something is selected. Now the working on the page is very smooth. But the session object isn't getting refreshed even if I postback to the server and as a result even if the users are working on the page they are being sent to the login screen after 20 mins.
Is there anyway where I could put all the controls in update panel and still refresh the session after any postback(dropdown selection)
I just started using URLRewriter.net with my blog and I have a problem with getting the query string values. I have a rule setting like:
<rewrite url="~/blog.aspx(?.+)?$"
to="~/hiddenFolder/blog.aspx?mode=default&$2"/>
But when I try to access /blog.aspx?page=1 the page parameter is not passed. Other parameters work great and there are no conflicts in rewriting rules.
When I pass some values like a++, c++, f+, as a parameter value in the url to an aspx page, I don't get the exact value in the aspx.cs page by Request.QueryString function. This problem is only with some special characters like +, _ , - etc.
Eg:
Consider this parameter string in the url : CourseName=c++&kval=0.7120968615801844&dval=1296217545373
Then when I trying to get the CourseName parameter value in the aspx.cs page using
Request.QueryString ,
crseName = Request.QueryString["CourseName "];
I got the value of the variable crseName as " c " only instead of "c++ "....
Follwing code that i have tried doesn't display any thing.
Test1.aspx
protected void Button1_Click(object sender, EventArgs e)
{
Response.Redirect("Test2.aspx?ID=1");
}
Test2.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="test2.aspx.cs" Inherits="WebApplication5.test2" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="Label1" runat="server" Text='<%=Request.QueryString["ID"] %>'></asp:Label>
</div>
</form>
</body>
</html>
I'm getting date value from calendar pop up window to the parent page but when my parent page gets postback that date value is being removed. anyone knows the solution, i'm using 2.0
View 10 RepliesIam trying to use a UserControl named CheckBoxControl as value for the ExpandControlID/CollapseControlID attributes of the CollapsiblePanelExtender. It works fine when I use a normal CheckBox instead.
<uc:CheckBoxControl ID="ucHaftpflicht" runat="server" OnCheckedChanged="UpdateStatus" ControlLabel="Haftpflicht" />
<asp:Panel ID="HaftpflichtPanel" runat="server">
</asp:Panel>
<asp:CollapsiblePanelExtender ID="CollapsiblePanelExtender" runat="server" CollapseControlID="ucHaftpflicht.CheckBox" ExpandControlID="ucHaftpflicht.CheckBox" TargetControlID="HaftpflichtPanel" />
When I run the site, most ajax controls on my site disappear and I get following errors in firefox script error console:
Fehler: Sys.InvalidOperationException: Handler was not added through the Sys.UI.DomEvent.addHandler method.
Fehler: Sys.ArgumentException: Failed to find element "ucHaftpflicht.CheckBox"
Parameter name: CollapseControlID
I have a DropDownList that has AutoPostBack set to true and the following OnSelectedIndexChanged function:
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This works great in every browser, except IE. In Firefox and Safari it works as expected: it appended the following QueryString: "?campus=SELECTION". In IE, it doesn't do this at all. In fact, no QueryString is present in the URL.I have no idea what would be wrong. If you want to see the page in action: [URL]
I'm trying to make a template control using UserControl. I have two issues: When I use the template it only show the Body text - not the Title text - why?. And I don't know how to implement styling (css) - can you tell me how to use a custom css file (Container.css) in .the App_Themes folder?
My code:
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I have a jQuery function in a .js file, and the function requires a querystring parameter to be passed. If I try to use the CompositeScript feature in the ScriptManager, it pukes on the file that has the querystring.
View 1 RepliesI 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.
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My app has broken after upgrading to ASP.NET 2.0. The problem is that Request.QueryString is empty when the SelectedIndexChanged event of a IE Web Controls tab strip is fired. It worked perfectly in ASP.NET 1. I have the tab strip contained within my own UserControl.
View 3 RepliesI am trying to dynamically load query form as a user control and build a sql statement based on user selection. I have a dropdownbox for Tablename, FieldName, ConditionalOperators and Value Field. Once the user makes a choice and causes a postback I loose my QueryForm (UserControl) and the selection Changed event never gets fired. I tried reloading the QueryForm on Page Init, still no luck.
View 5 RepliesI'm having few UpdatePanels on my master page. And then, I have RadTreeViewcontrol on the page, that should cause partial postback each time node is clicked. Everything works fine there. Since I'm using the same tree on some other pages, I moved this functionality to UserControl. Stuff I've done before, so no problem. Moved some code to ascx, created some events. Everything always worked for me well. But not now. RadTreeView is nested inside UserControl, and this control on master page with update panels, see below:
<asp:Panel ID="pnlContentWrapper" runat="server" CssClass="ContentWrapper">
<div id="HeaderBreadCrumb">
<asp:ContentPlaceHolder ID="HeaderBreadCrumbContent" runat="server" />
</div>
<div id="HeaderMenu">
<asp:UpdatePanel ID="upnlTreeMenu" runat="server">
<ContentTemplate>
<asp:ContentPlaceHolder ID="HeaderMenuContent" runat="server" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="treeProductTree" />
</Triggers>
</asp:UpdatePanel>
</div>
<div id="TreeDiv">
<fp:ProductTree ID="treeProductTree" runat="server" />
</div>
<asp:Panel ID="ContentDiv" ClientIDMode="Static" runat="server">
<asp:UpdatePanel ID="upnlTreeContent" runat="server">
<ContentTemplate>
<asp:ContentPlaceHolder ID="TreePageContent" runat="server" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="treeProductTree" />
</Triggers>
</asp:UpdatePanel>
</asp:Panel>
</asp:Panel>
And the user control is really simple:
<%@ Control Language="vb" AutoEventWireup="false" CodeBehind="ProductTree.ascx.vb"
Inherits="ProductTree" %>
<div>
<telerik:RadTreeView ID="treeProductTree" ClientIDMode="Static" runat="server" EnableDragAndDrop="false"
SkinID="CustomSkin" CssClass="MasterProductTree" DataFieldID="NodeId" DataFieldParentID="NodeParentId"
DataTextField="NodeName" DataValueField="NodeId" />
</div>
And some code behind:
Imports Telerik.Web.UI
Public Class ProductTree
Inherits System.Web.UI.UserControl
Public Event NodeExpand As EventHandler(Of ProductTreeNodeExpandEventArgs)
Public Event SelectedNodeChange As EventHandler
Protected Sub ProductTree_NodeExpand(ByVal sender As Object, ByVal e As RadTreeNodeEventArgs) _
Handles treeProductTree.NodeExpand
Dim nodeId As Integer = CInt(e.Node.Value)
Dim evetArgs = New ProductTreeNodeExpandEventArgs(nodeId)
RaiseEvent NodeExpand(Me, evetArgs)
//'some logic
End Sub
Protected Sub ProductTree_OnNodeClick(ByVal sender As Object, ByVal e As RadTreeNodeEventArgs) _
Handles treeProductTree.NodeClick
RaiseEvent SelectedNodeChange(Me, New System.EventArgs())
End Sub
End Class
What I don't know is: why is this causing full postback instead of partial? I suspect that it may have something to do with raising my for SelectedNodeChange, but I don't know how to deal with it other way. I need to let other components know, that node selection changed. How can I improve this to make it work with UpdatePanels?
I have a jQuery UI dialog which has a usercontrol in it, which I get by .load of the page it is in. It is a simple calculator.You pick several numbers and then click a button, a postback happens and finally you get the result in to two lables.When I click the button inside the dialog, the postback happens and I see the result in the original page, not the dialog.
View 1 RepliesI am trying to add UserControl dynamically to the page. UserControl is added only once (when the page loads) but on postback it doesn't add again (Only one control is alwasys there).I want to add user control Whenever user clicks "btnAddUCWingControl" so when the page loads for first time, there will be only one control, on postback there must be TWO controls and so on
Here is my .aspx (this is content page)
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My .aspx.cs file is
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In the UserControl I am adding dynamic ImageButtons depending on the condition When the page loads and I click on Edit button I have no problems and btnEdit_Click is fired. But after that (btnEdit id removed and btnSave is added) when I click on btnSave the btnSave_Click event does not fire. What could be the problem?
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