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ASP.NET error with DropDownList

Posted on 2012-04-12
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Last Modified: 2012-06-27
I get the following error:

Parser Error

Parser Error Message: System.Web.UI.WebControls.ListItemCollection must have items of type 'System.Web.UI.WebControls.ListItem'. 'asp:DropDownList' is of type 'System.Web.UI.WebControls.DropDownList'.

The error comes from the following code:

<asp:DropDownList ID="GenericTypeBox" runat="server"
                                    DataSourceID="GenericLaborDataSource" DataTextField="code_value_desc"
                                    DataValueField="code_value" Visible="False">
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Question by:zintech
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2 Comments
 
LVL 40

Expert Comment

by:Kyle Abrahams
ID: 37839397
The Problem is with your GenericLaborDataSource . . . you have the wrong type.

Change it from a ListItemCollection to a SqlDataSource.



See this:

http://stackoverflow.com/questions/805162/asp-net-drop-down-list-and-data-source-created-dynamically
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LVL 14

Accepted Solution

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binaryevo earned 500 total points
ID: 37839406
From the code you posted, at first glance, it doesnt appear that the <asp:DropDownList tags are being closed correctly with either />  or </asp:DropDownList>
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