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  1. #1
    Join Date
    Dec 2008

    Smile After migration ASP.Net 1.1 to 3.5: TreeView control is not displaying data in hierar


    Before migration: Existing application (running on .Net 1.1) is using custom control developed by inheriting TreeView control of Microsoft.Web.UI.WebControls and displays data (country & its city’s) in heirarchical format.

    After migrating existing application: the same custom control is not displaying data in hierarchical format, only country node is being shown (city nodes are not shown), I mean +/- icons are not being shown. Any idea what could be the problem?

    Additionally I would like to highlight points:
    • Custom control in design view (application *.aspx page) is rendering with Error Creating Control object reference not set to an instance of an object.
    • But I have checked assembly reference is correct. Note: reference I have done is using @Register tag in web page (Source section).


    Last edited by na_atheeq; 12-19-2008 at 01:55 AM.

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