ObjectDataSource 'ObjectDataSource1' could not find a non-generic method 'Insert' that has parameter...

Question

Hello ,

 I am stumped by this Error in ASP .NET when trying to insert a record thru DetailsView web control :

ObjectDataSource 'ObjectDataSource1' could not find a non-generic method 'Insert' that has parameters: ProductName, SupplierID, CategoryID, QuantityPerUnit, price, UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued, UnitPrice.

 

below is my details view , the object data source its connected thru and the custom class that i wrote which simply calls down the table adapters insert method. The tabladapter's insert method works just fine when i try it from the designer but is always giving this error from the page :(. I m using Northwind db for this application, can anyone please tell me wats causing this error ?

 

Custom class ( for products table in Northwind db) :

[System.ComponentModel.DataObject]

public class ProductsBRL

{

public ProductsBRL()

{

//

// TODO: Add constructor logic here

//

}

[System.ComponentModel.DataObjectMethodAttribute(System.ComponentModel.DataObjectMethodType.Insert, true)]

public int Insert(string productname,int? supplierid,int? categoryid,string quantityperunit,decimal? price,short? unitsinstock,short? unitsonorder,short? reorderlevel,bool discontinued)

{

NorthwindTableAdapters.ProductsTableAdapter adpProducts = new ProductsTableAdapter();

int res = adpProducts.Insert(productname, supplierid, categoryid, quantityperunit, price, unitsinstock, unitsonorder, reorderlevel, discontinued);

return res;

}

[System.ComponentModel.DataObjectMethodAttribute(System.ComponentModel.DataObjectMethodType.Select, true)]

public Northwind.ProductsDataTable GetProducts()

{

NorthwindTableAdapters.ProductsTableAdapter adpProducts = new ProductsTableAdapter();

return adpProducts.GetProducts();

}

}

 

 

 

 

<asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False"

DataKeyNames="ProductID" DataSourceID="ObjectDataSource1" Height="50px"

Width="125px" AllowPaging="True">

<Fields>

<asp:BoundField DataField="ProductID" HeaderText="ProductID"

InsertVisible="False" ReadOnly="True" SortExpression="ProductID" />

<asp:BoundField DataField="ProductName" HeaderText="ProductName"

SortExpression="ProductName" />

<asp:BoundField DataField="SupplierID" HeaderText="SupplierID"

SortExpression="SupplierID" />

<asp:BoundField DataField="CategoryID" HeaderText="CategoryID"

SortExpression="CategoryID" />

<asp:BoundField DataField="QuantityPerUnit" HeaderText="QuantityPerUnit"

SortExpression="QuantityPerUnit" />

<asp:BoundField DataField="UnitPrice" HeaderText="UnitPrice"

SortExpression="UnitPrice" />

<asp:BoundField DataField="UnitsInStock" HeaderText="UnitsInStock"

SortExpression="UnitsInStock" />

<asp:BoundField DataField="UnitsOnOrder" HeaderText="UnitsOnOrder"

SortExpression="UnitsOnOrder" />

<asp:BoundField DataField="ReorderLevel" HeaderText="ReorderLevel"

SortExpression="ReorderLevel" />

<asp:CheckBoxField DataField="Discontinued" HeaderText="Discontinued"

SortExpression="Discontinued" />

<asp:CommandField ShowInsertButton="True" />

</Fields>

</asp:DetailsView>

<asp:ObjectDataSource ID="ObjectDataSource1" runat="server"

InsertMethod="Insert" SelectMethod="GetProducts" TypeName="ProductsBRL">

<InsertParameters>

<asp:Parameter Name="productname" Type="String" />

<asp:Parameter Name="supplierid" Type="Int32" />

<asp:Parameter Name="categoryid" Type="Int32" />

<asp:Parameter Name="quantityperunit" Type="String" />

<asp:Parameter Name="price" Type="Decimal" />

<asp:Parameter Name="unitsinstock" Type="Int16" />

<asp:Parameter Name="unitsonorder" Type="Int16" />

<asp:Parameter Name="reorderlevel" Type="Int16" />

<asp:Parameter Name="discontinued" Type="Boolean" />

</InsertParameters>

</asp:ObjectDataSource>

 

 

Insert command text in tableadapter :

INSERT INTO Products
                      (ProductName, SupplierID, CategoryID, QuantityPerUnit, UnitPrice, UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued)
VALUES     (@ProductName,@SupplierID,@CategoryID,@QuantityPerUnit,@UnitPrice,@UnitsInStock,@UnitsOnOrder,@ReorderLevel,@Discontinued)