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Rank: YAF Forumling
Joined: 12/1/2008
Posts: 2
Location: Seattle
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Hello,
I am working on a site that was previously developed and when I click to select an item from the drop-down box the following error occurs. This behavior can be seen in 3 pages amongst the entire website. Pages uses master page.
Below is the error message, please help. Thanks!
[NullReferenceException: Object reference not set to an instance of an object.]
yaf.Web.controls.ProductSelectBox.ddlCategory_SelectedIndexChanged(Object sender, EventArgs e) +106
System.Web.UI.WebControls.ListControl.OnSelectedIndexChanged(EventArgs e) +105
System.Web.UI.WebControls.DropDownList.RaisePostDataChangedEvent() +134
System.Web.UI.WebControls.DropDownList.System.Web.UI.IPostBackDataHandler.RaisePostDataChangedEvent() +7
System.Web.UI.Page.RaiseChangedEvents() +117
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1646
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Rank: YAF Developer
Joined: 7/12/2005
Posts: 1,324
Location: on Dock Street
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Unless I'm very much mistaken "ProductSelectBox" isn't ours.  "It's a case of RTFM.. the only problem being we don't have a manual!" When I post FP:Mek in a topic, I'm leaving my footprint there so I can track it once I get into coding/supporting. (Yes I stole this off Ederon  )
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Rank: YAF Forumling
Joined: 12/1/2008
Posts: 2
Location: Seattle
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I do apologize since I'm not fully aware of the different components.
Is there any way you can make a suggestion on what the problem might be?
Is that some sort of compatibility issue?
Thanks.
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Rank: YAF Developer
Joined: 7/12/2005
Posts: 1,324
Location: on Dock Street
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No problem. Unfortunately without looking into what its trying to do when ddlCategory_SelectedIndexChanged method is called in the code behind I couldn't possibly guess. If you have access to the code behind (i.e. MyPage.aspx.cs) I'd recommend either contracting or subcontracting a c# dev to have a look, or if your familiar but just stuck then try posting on www.asp.net and see if some kindly soul can point you in the right direction. "It's a case of RTFM.. the only problem being we don't have a manual!" When I post FP:Mek in a topic, I'm leaving my footprint there so I can track it once I get into coding/supporting. (Yes I stole this off Ederon )
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