Web Forms :: Call A Javascript Function When Treenode Selected In A Asp:TreeView?

Feb 23, 2011

I want to ask if there is any way to call a javascript function when treenode selected in a asp:TreeView?

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I've something like

[Code]....

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I have a function in Code Behind, Can any one let me know "How would I call this function using javascript"?

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I don't need to run the function every time the page loads!!

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I have javascript function like below

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On button click i want to call javascript.

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I am trying to extend the TreeView and TreeNode class and use it in an .aspx page. My development environment is VS 2005. I put the following code inside of a single .cs file in my App_Code folder:

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I want to now use my inherited Node and TreeView in my .aspx file. I have the following directive, which is throwing an error -> File is in the special directory App_Code which is not allowed. I tried putting everything into an .ascx file, but I think I am not specifying the class and inheritance directives correctly.

<%
@
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TagPrefix="R7A"
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Src="../App_Code/ExtendedTreeNode.cs"........................

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I have this working in several pages in my site but in one page it wont work!

this is the hierarchyof the page.

I have a treeview in a div,in an asp:panel, in an updatepanel in a user control. the panel is shown/hidden using the ajax modalpopupextender.

this user control is placed in a content page (using a master page).

Now that you got the above, I'll let you know what ive tried already.

I tried doing this:(which works perfectly when the treeview is placed simply in an aspx page)

[Code]....

tried using also :

[Code]....

Basically i kept playing around with it trying different ways but seems like the selected node is just not visible even though i call this JS function after i have selected the Node in code behind.

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Mar 9, 2011

I´m using a treenode´s selected node´s value to filter a an accessdatasource which populates a gridview.However when I press the "edit" button in the gridview, I guess the node is undselected because the gridview gets emptied. When I reselect the node, the gridview displays the filtered records, and the one being edited is in edited mode.So I´d like to keep the node selected. Not only because of the above, but also so the user can see what he is editing.Fuga.edit: When I remove the filtering from the accessdatasource init event, the gridview diplays all records, but the worng one is being edited. I guess it´s the one with the same index as the filtered record. So, visual studio gets the index and then reloads the data and applies the index on the reloaded data!?

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