ObjectDataSource problem in selectMethod

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C#

Whats the problem? I am getting error as

ObjectDataSource 'SearchResultDataSource' could not find a non-generic method 'GetSearchResults' that has parameters: maximumRows, startRowIndex.

This is my ODS:

<asp:ObjectDataSource ID="SearchResultDataSource" runat="server" TypeName="FocusCareer.Explorer.WebCareer.SearchResultView"
   EnablePaging="True"  SelectMethod="GetSearchResults" >
</asp:ObjectDataSource>

My ListView as below:

<asp:ListView ID="SearchResultListView" runat="server" ItemPlaceholderID="SearchResultPlaceHolder"
                           DataSourceID="SearchResultDataSource" >

code behind:

public List<SearchResultView> GetSearchResults(int startRowIndex, int maximumRows)
{
    var pageIndex = ((int)Math.Floor((double)startRowIndex / maximumRows));

    List<SearchResultView> searchResults = GetJobSeekerReferrals(pageIndex, maximumRows);
    _searchResultCount = searchResults.Count();

    return searchResults;
}