Question

I have created a data access layer in my web app which uses ObjectDataSource instead of SqlDataSource. I have a FormView to update some data in my database. In my old asp.net code I had something like:

<asp:SqlDataSource ID="sdsTradeDetails" runat="server" 
 ConnectionString="<%$ ConnectionStrings:ForexDB %>" 
 SelectCommand="usp_GetTrade" SelectCommandType="StoredProcedure" 
 UpdateCommand="usp_UpdateTrade" UpdateCommandType="StoredProcedure" 
 <SelectParameters>
  <asp:ControlParameter Name="tradeId" ControlID="grdTrades" PropertyName="SelectedDataKey.Value" />            
 </SelectParameters>
 <UpdateParameters>
  <asp:ControlParameter Name="tradeId" ControlId="frmTrade" PropertyName="SelectedValue"  />
 </UpdateParameters>
</asp:SqlDataSource>

Which worked fine. I have replaced the SqlDataSource with this:

<asp:ObjectDataSource
 id="srcTrade" 
 TypeName="DatabaseComponent.DBUtil" 
 SelectMethod="GetTrade"
 UpdateMethod="UpdateTrade"
 runat="server">
 <SelectParameters>
  <asp:QueryStringParameter Name="tradeId" QueryStringField="tradeId" />               
 </SelectParameters>
 <UpdateParameters>
  <asp:ControlParameter Name="tradeId" ControlId="frmTrade" PropertyName="SelectedValue"  />
 </UpdateParameters>
</asp:ObjectDataSource>

But now I get this error when I click the Update button in my FormView:

Exception Details:
System.InvalidOperationException:
ObjectDataSource ‘srcTrade’ could not
find a non-generic method
‘UpdateTrade’ that has parameters:
symbol, pctAccountRisked,
tradeSetupId, lotsPerUnit,
initialStopPrice, tfCode, MAEPips,
MFEPips, tradeGrade, executionGrade,
tradeTypeId, comment, tradeId.

In my DBUtil class I have this for UpdateTrade:

public void UpdateTrade(
 int tradeId, 
 string symbol, 
 decimal pctAccountRisked, 
 string tradeSetupId, 
 decimal lotsPerUnit, 
 decimal initialStopPrice, 
 string tfCode, 
 int MAEPips, 
 int MFEPips, 
 int tradeGrade, 
 int executionGrade, 
 string comment)
{
 SqlCommand cmd = new SqlCommand("usp_UpdateTrade");
 cmd.Parameters.AddWithValue("@tradeId", tradeId);
 cmd.Parameters.AddWithValue("@symbol", symbol);
 cmd.Parameters.AddWithValue("@pctAccountRisked", pctAccountRisked);
 cmd.Parameters.AddWithValue("@tradeSetupId", tradeSetupId);
 cmd.Parameters.AddWithValue("@lotsPerUnit", lotsPerUnit);
 cmd.Parameters.AddWithValue("@initialStopPrice", initialStopPrice);
 cmd.Parameters.AddWithValue("@tfCode", tfCode);
 cmd.Parameters.AddWithValue("@MAEPips", MAEPips);
 cmd.Parameters.AddWithValue("@MFEPips", MFEPips);
 cmd.Parameters.AddWithValue("@tradeGrade", tradeGrade);
 cmd.Parameters.AddWithValue("@executionGrade", executionGrade);
 cmd.Parameters.AddWithValue("@comment", comment);
 UpdateTable(cmd, "trade");
}

and this for GetTrade:

public DataTable GetTrade(int tradeId)
{
 SqlCommand cmd = new SqlCommand("usp_GetTrade");
 cmd.Parameters.AddWithValue("@tradeId", tradeId);
 return FillDataTable(cmd, "trade");
}

Please help!

Answer 1

Hi your UpdateTrade method and the passing parameters from your datasource are missmatching. please recheck them