'column1' has a SelectedValue which is invalid because it does not exist in the list of items. Parameter name: value

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Hi Everyone,
I had a textbox for saving address but now its being replaced with dropdownlist in asp.net.
While binding the previous record with the dropdownlist.It gives the following error:-

SQL

'column1' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value

thats the markup

ASP.NET

<td style="text-align: left">
                        <asp:DropDownList ID="column1" AutoPostBack="true" runat="server" Style="width: 250px"
                            OnSelectedIndexChanged="column1_SelectedIndexChanged" OnDataBound="column1_DataBound">
                        </asp:DropDownList>
                    </td>

How an it be resolved now?

Posted 16-Feb-14 22:59pm

Sumit Bhargav

Updated 17-Feb-14 21:53pm

v5

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Comments

Ahmed Bensaid 17-Feb-14 6:00am

Can we see your code ?

Sumit Bhargav 17-Feb-14 6:40am

column1.DataSource = Service.Countries();
column1.DataMember = "country";
column1.DataBind();

Ahmed Bensaid 17-Feb-14 8:17am

Edit your question and add your page markup and code-behind ...

Sumit Bhargav 18-Feb-14 3:51am

the error is coming on column1.databind();

The14thNoah 18-Feb-14 0:59am

can you show us your code?
and the line you get the error?

R-a-v-i-k-u-m-a-r 18-Feb-14 4:23am

can you show us your code?

1 solution

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ravikhoda · Answer 1 · 2014-02-17T22:30:00

Solution 1

where is the value field on your code. try and write datatext filed and data value field on your code.

Posted 17-Feb-14 22:30pm

ravikhoda