Web Forms :: PopulateOnDemand Does Not Work On Data Bound TreeView?

Mar 1, 2010

I have a TreeView that is bound to a XmlDataSource control. I've added some TreeNodeBinding elements to define how I want the XML data to be shown.

I have also added PopulateOnDemand=true to these TreeNodeBindings. However, doing so didn't change a thing and the entire XML tree is displayed. Moreover, the TreeNodePopulate event is not fired on node expand as well.

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Web Forms :: TreeView With XMLdatasource And Populateondemand

Apr 27, 2010

I am Trying to build a Treeview Control using an XMLDataSource which consumes a XML file (which is set dynamically) . The Problem is that the XML file Size is huge, arround .5 MB so the page load is hit because of this . Now i know that there is a PopulateOndemand Property of the treeview and there is also a populateondemand property of Treenodebinding which is used in XMLDataSource .

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.treenodebinding.populateondemand.aspx

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Treeview, PopulateOnDemand, Ajax Failure?

May 16, 2010

have embedded a TreeView inside an Update Panel, PopulateOnDemand in use.When a top level node is expanded everything is fine - the level 1 (zero base) nodes are populated.When on of these lower level nodes is expanded the tree Collapse

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Forms Data Controls :: Treeview Error: Bound To XML Source, Data Includes Angle Brackets?

Dec 6, 2010

I have some data which contains angle brackets in some of the fields.Even if properly escaped as <: or > (or even the hex codes), or contained in CDATA, in Visual Studio 2005 ASP.Net, the field data is being truncated at the first angle bracket. If I replace the data with curly braces, it displays fine.Is this a parser defect in the TreeView control? I can use Response.Write and see that the data provided by the XmlDataSource is fine. Example:

<ITReview>
<row TopNode="REQ 123456 TT Description <Date sent to app dev> <Priority> <SubTask Status>"/><row TopNode="REQ 456789 TT Description <Date sent to app dev> <Priority> <SubTask Status>"/>
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<ITReview>
<row TopNode="REQ 123456 TT Description <Date sent to app dev> <Priority> <SubTask Status>"/><row TopNode="REQ 456789 TT Description <Date sent to app dev> <Priority> <SubTask Status>"/>
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This truncates right after TT Description. If I change to curly braces or parentheses, it displays fine.

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Can Treeview Nodes Work Without Javascript

Jan 22, 2011

I understand that a treeview cannot expand/collapse without javascript. But is it possible to open the treeview in expanded form when javascript is disabled? Even if I cannot expand/collapse the nodes, at least I can click on the nodes that will display the data related to that node.

Similar to the treeview used in online auction sites, our treeview looks something like this: [URL], where clicking on a link will redirect me, and clicking on the "+" will expand or collapse the node. The only difference would be that ours is databound.

Another developer is working on this and he tells me that this is not possible without javascript. This webform in particular works almost entirely without javascript, and I'd like the treeview to also work partially.

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AJAX :: TreeView Does Not Work With The UpdatePanel In .NET 3.5?

Mar 16, 2010

I have read several post on the TreeView is not/partly working with the UpdatePanel, but none of them mention that an update (triggered by a timer) causes creation of multiple javascript functions in the HTML header. In Mozilla Firefox this a memory leak. I have created a test webapplication to demonstrate the issue we encounter.

[Code]....

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Jun 2, 2010

I'm trying to get my treeview control to work where a user clicks on a parent node. The node will expand.Then, the user clicks on another parent node and that node expands while the previous parent node stays expanded. My problem is that when I expand one parent node, another expanded parent node collapses.What am I doing wrong?

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Web Forms :: Handling TreeView Error Detected By System.Web.UI.WebControls.TreeView.LoadPostData?

Mar 1, 2011

Periodically a rash of occurrences of the following error happen. I believe they're the result of hack attempts. Whether that's the case or not, my question is how can I handle the error? I want to avoid unhandled exceptions. The TreeView control is just
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Message: Input string was not in a correct format.

Stack Trace:
at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
at System.Web.UI.WebControls.TreeView.LoadPostData(String postDataKey, NameValueCollection postCollection)
at System.Web.UI.WebControls.TreeView.System.Web.UI.IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection)
at System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

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Web Forms :: Treeview .each Node In A Treeview Will Need To Display Different Page?

Nov 15, 2010

I have a treeview which will be generated dynamically which need to be displayed on left side and when user clicks on a node it need to open a page on the right side of the same page. and each node has different aspx page. so whenever user selects a node the page details should be displayed on the right side .we can use an iframe on the page which will display the different pages clicked on the node.Is there any alternative i can use to display different pages based on the user selection on the right side without using iframe.

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Web Forms :: Drag And Drop TreeView Nodes Of TreeView?

May 7, 2015

Code to drag and drop a TreeNode to another control or tag such as Div or even another TreeView.

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Forms Data Controls :: Using Event For Data Bound Control Vs Data Source?

Jan 1, 2011

I've been using the Item Inserted event for my data controls, such as details view. I'm wondering if there are advantages to doing this with the data sources instead of the data control. There is a lot of overlap in the events provided by these two types of controls. Are there advantages to using the events raised by the data source instead of the ones raised by the data control itself. Should I be using the events raised by the data source instead of the control used to enter the data?

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Forms Data Controls :: How To Sort Data In Gridview Without Using Bound Fields

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I am using gridview to display some columns with autogenerate column as 'true' and not added boundfields,headers.

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Forms Data Controls :: Listview TextBox Bound By Typed Data Set?

Feb 10, 2011

When I bind my listview with a typed dataset the textbox is filled with spaces up to its max length.

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Forms Data Controls :: Unable To Sort Data-Bound DropDownList When AppendDataBoundItems Is True?

Apr 26, 2010

I'm having a problem sorting a dropdown that I've bound to a SQL Server data source. I've narrowed the problem down to the fact that I have a static item at the top of the dropdown with the data-bound items appended afterwards. If I remove the static item (<asp:ListItem Value="-1" Text="All" />) the ORDER BY part of the select clause works fine. How can I get around this issue? What I would like is to have the "All" static item at the top of the list with the data-bound items sorted alphabetically afterwards. I'm using Visual Studio 2010 and ASP.NET 4 if it makes any difference.

[Code]....

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Forms Data Controls :: Formatting Bound Data In Gridview Using Client-side Javascript?

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I am looking for a method to format gridview bound data using javascript.

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[Code]....

But I am looking for a way to perform this task on client side, rather than doing it on the server.

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Forms Data Controls :: Row Data Bound Method That Inserts A Row When Comparing Values On A Particular Field

Jan 22, 2010

I have a gridview, which on the row data bound method that inserts a row when comparing values on a particular field. If the two values are different, a new row is inserted, if not no row is inserted. This coding is working as a grouping gridview, and is working correctly. However, I have problem, and problem is counting the rows between each group, which I want to display in my blank row between each group, the value of which I am holding in a hiddenfield.

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protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
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Table tbl = e.Row.Parent as Table;
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Label lbl2 = new Label();
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{
if (e.Row.RowType == DataControlRowType.DataRow)
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Label lbl = (Label)e.Row.FindControl("lblValue");
string str1 = ((Label)(lbl)).Text;
string prevStr= (string)Session["previousStr"];
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Forms Data Controls :: Reset Data Bound User Control Shown With Ajax Pop - Up Extender

Nov 1, 2010

I have a web form, and an "add vendor" button. Click the button, a modal dialog pops up (ajax:ModalPopupExtender). User selects one of two radio buttons which shows a data bound asp:View in an update panel - this view is data bound to a single row and must be populated by the user. However I also want to provide a cancel button which should close the modal dialog and reset the bound view.

However what is happening is that the ModalExtender closes, but when the "add vendor" button is presented again, it's still bound to the same data. Do I need to clear my data source? How so I reset the forms/views so that when the 'add vendor' button is clicked again the form is presented as it should be (IE the 2 select options, picking one re-binds the asp:View)?

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Web Forms :: How To Get Data Bound Server Control

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i am new to asp.net and need some help with writing a user control that fits the following specification:

i have a list of properties. each property is a string triplet (type, name, value). TYPE can be "boolean", "string", "int" with VALUE taking appropriate values.

so a list of properties would look like: {("boolean", "isMember", "true"), ("int", "age", "39")} .

i need to display the list of properties in a table with a corresponding control for each value type

("boolean" in a CheckBox, "string" "int" in a TextBox)

and be able to to edit the values. I wrote a small control that displays a single property. It puts the NAME in a Label and depending on the TYPE inserts

the value in a TextBox or CheckBox and then puts that in a PlaceHolder. I could afterwards display the list in a table when a button is clicked.

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Web Forms :: Hiding Data Bound Dropdowns?

Mar 4, 2011

I have figured out how to programmically hide a dropdown on same page and on a different page using a Session when the Dropdownbox im using has a static drop down list. I am, however, having issues with a dropdown that is data bound to a DB for the dropdown list.I have gone over the code many times and that seems to be where my issue lies.

Here is where i set the selected item to a session on one .CS page:

[code]...

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Forms Data Controls :: How To Get The Row Value Of Gridview Upon Bound

Jul 2, 2010

I got his code for RowDataBound

[Code]....

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Forms Data Controls :: Get PropertyName Of Data Bound Control?

Mar 26, 2010

is there a way to get the PropertyName of a data bound control? For example:

I have a text box like this:

[Code]....

How can I get the info that this text box is bound to the property with the name "Test"?

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Forms Data Controls :: Develop A Custom Data-bound Control Which Will Contain, Few Text-boxes, Drop-down Lists And Labels?

Mar 24, 2010

I need to develop a custom data-bound control which will contain, few text-boxes, drop-down lists, labels, and other standard web-server controls. And, I want to be able to load this control from a web page on button click. When the user enters any data to any of its child controls, i should be able to save, and also retrieve when the data-bound control is loaded again. Also, the data in the child control should retain their value on postback. What approach should i follow?

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Forms Data Controls :: DropDownList Do Not Have Data Bound?

Feb 22, 2011

I got a dropdownlist do not have data bound, but populate the items from an object:

dlEmployees.ClearSelection();
// get employees
StaffBusinessCollection employeeCollection = StaffBusinessCollection.GetEmployees();
foreach (var employeeObject in employeeCollection)
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ListItem li = new ListItem(employeeObject .EmployeeName, employeeObject .EmployeeID);
dlEmployees.Items.Add(li);
}

Now I want to get the 'Value' (ie.EmployeeID) of the selected employee.

I tried in the SelectedIndexChanged event but does not work, event the event did not get triggered:

protected void dlEmployees_SelectedIndexChanged(object sender, EventArgs e)
{
Label4.Text = dlEmployees.SelectedIndex.ToString();
}

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Forms Data Controls :: How To Hide Certain Row To Bound Listbox

Oct 13, 2010

I have a listbox that I want to check to see if the current row value already exists in another listbox. How can I hide/preven row from being added to listbox at databind/databound?

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Forms Data Controls :: Get ID Bound To Label In GridView?

Feb 10, 2010

I have a foreign key (TeamID) in a GridView. I use a TemplateField to display it as the lookup value (TeamName) in a label, and a dropdown for editing. When row is selected and SelectedIndexChanged is fired, I want to access the TeamID. I can get the TeamName from the label. I tried putting the TeamID in DataKeyNames, but that fouled up my dropdown when saving (it reverts to the original value). So, how can I get the TeamID?

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