please solve error in dropdown list

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Please solve the error
I have 2 DropDownList. in the first i am entering the value from editing items of DropDownList and in the second the values are selected from the oracle table depending on the value selected from the first DropDownList

ASP.NET

<asp:DropDownList ID="DropDownList2" runat="server" AutoPostBack="true" Visible="true">
             <asp:ListItem>crt
             <asp:ListItem>lcd
             <asp:ListItem>led
         
         <asp:DropDownList ID="monitor" runat="server" DataSourceID="moni" Visible="false" >
         
         <asp:SqlDataSource ID="moni" runat="server"
        ConnectionString="<%$ ConnectionStrings:constr %>" 
             ProviderName="<%$ ConnectionStrings:constr.ProviderName %>" 
             
             
             
             SelectCommand="SELECT "SRNO" FROM "MASTER" WHERE ("ITEM" = :ITEM)">
             <SelectParameters>
                 <asp:ControlParameter ControlID="DropDownList2" Name="ITEM" 
                     PropertyName="SelectedValue" Type="String" />
             </SelectParameters>

the error shown is in the second dropdown list it gives result as "system.data.datarowview"

Posted 8-Sep-11 22:20pm

asok6783

Updated 8-Sep-11 23:03pm

Abhijit Jana

v4

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Raju Prajapati 9-Sep-11 5:38am

Have you set DataValueField and DataTextField properties of second dropdownlist

2 solutions

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Abhijit Jana · Answer 1 · 2011-09-08T23:05:00

Solution 1

Where is the Selected index Change event ? Where is the DropDownList2 Id? In your code ID is "monitor" .

Posted 8-Sep-11 23:05pm

Abhijit Jana

srinivas vadepally · Answer 2 · 2011-09-10T00:35:00

Solution 2

Hi asok6783,

This is probably because you have not set the DataTextField/ DatavalueField property of the dropdownlist
Just go through the following link
"system.data.datarowview"

Still unable to solve your problem,just send me a query.
Have a nice time!!!

Posted 10-Sep-11 0:35am

srinivas vadepally