Non riesco a far girare un codice perchè l'applicazione mi da errore.Mi dice che che nel campo TYPENAME non trova la classe.Per comodità vi posto il codice:
Imports System.Data
Imports System.Data.SqlClient
Public Class ProductInfo3
Const conString As String = _
"Server=localhost;Trusted_Connection=true;Database=banking"
Public Shared Function GetProducts() As SqlDataReader
Dim con As New SqlConnection(conString)
Dim selectString As String = "SELECT * " & _
FROM tblUsers "
Dim cmd As New SqlCommand(selectString, con)
con.Open()
Dim dtr As SqlDataReader = _
cmd.ExecuteReader(CommandBehavior.CloseConnection)
Return dtr
End Function
Public Shared Sub UpdateProduct(ByVal original_productId _
As Integer, ByVal productName As String, _
ByVal unitPrice As Decimal)
Dim con As New SqlConnection(conString)
Dim updateString As String = "UPDATE tblUsers " & _
"SET FirstName=@FirstName & _
"WHERE UserID=@UserID"
Dim cmd As New SqlCommand(updateString, con)
cmd.Parameters.AddWithValue("@FirstName", FirstName)
cmd.Parameters.AddWithValue("@LastName", LastName)
cmd.Parameters.AddWithValue("@Zip", Zip)
con.Open()
cmd.ExecuteNonQuery()
con.Close()
End Sub
Public Shared Sub DeleteProduct(ByVal original_productId _
As Integer)
Dim con As New SqlConnection(conString)
Dim deleteString As String = "DELETE tblUsers " & _
"WHERE FirstName=@FirstName"
Dim cmd As New SqlCommand(deleteString, con)
cmd.Parameters.AddWithValue("@FirstName", FirstName)
con.Open()
cmd.ExecuteNonQuery()
con.Close()
End Sub
End Class
<html>
<head>
<title>Show Users</title>
</head>
<body>
<form id="form1" runat="server">
<asp:GridView
ID="GridView1"
DataSourceID="ObjectDataSource1"
DataKeyNames="UserID"
AutoGenerateColumns="false"
AutoGenerateEditButton="true"
AutoGenerateDeleteButton="true"
Runat="Server">
<Columns>
<asp:BoundField
DataField="FirstName"/>
<asp:BoundField
DataField="LastName"
/>
</Columns>
</asp:GridView>
<asp:ObjectDataSource
ID="ObjectDataSource1"
TypeName="ProductsInfo3" 'riga che dà errore
SelectMethod="GetProducts"
UpdateMethod="UpdateProduct"
DeleteMethod="DeleteProduct"
Runat="Server" />
</form>
</body>
</html>
Forse devo separare la classe in un altro file ,compilarla e quindi inserirla nel codice asp?Datemi un aiuto! Grazie tanto.
Imports System.Data
Imports System.Data.SqlClient
Public Class ProductInfo3
Const conString As String = _
"Server=localhost;Trusted_Connection=true;Database=banking"
Public Shared Function GetProducts() As SqlDataReader
Dim con As New SqlConnection(conString)
Dim selectString As String = "SELECT * " & _
FROM tblUsers "
Dim cmd As New SqlCommand(selectString, con)
con.Open()
Dim dtr As SqlDataReader = _
cmd.ExecuteReader(CommandBehavior.CloseConnection)
Return dtr
End Function
Public Shared Sub UpdateProduct(ByVal original_productId _
As Integer, ByVal productName As String, _
ByVal unitPrice As Decimal)
Dim con As New SqlConnection(conString)
Dim updateString As String = "UPDATE tblUsers " & _
"SET FirstName=@FirstName & _
"WHERE UserID=@UserID"
Dim cmd As New SqlCommand(updateString, con)
cmd.Parameters.AddWithValue("@FirstName", FirstName)
cmd.Parameters.AddWithValue("@LastName", LastName)
cmd.Parameters.AddWithValue("@Zip", Zip)
con.Open()
cmd.ExecuteNonQuery()
con.Close()
End Sub
Public Shared Sub DeleteProduct(ByVal original_productId _
As Integer)
Dim con As New SqlConnection(conString)
Dim deleteString As String = "DELETE tblUsers " & _
"WHERE FirstName=@FirstName"
Dim cmd As New SqlCommand(deleteString, con)
cmd.Parameters.AddWithValue("@FirstName", FirstName)
con.Open()
cmd.ExecuteNonQuery()
con.Close()
End Sub
End Class
<html>
<head>
<title>Show Users</title>
</head>
<body>
<form id="form1" runat="server">
<asp:GridView
ID="GridView1"
DataSourceID="ObjectDataSource1"
DataKeyNames="UserID"
AutoGenerateColumns="false"
AutoGenerateEditButton="true"
AutoGenerateDeleteButton="true"
Runat="Server">
<Columns>
<asp:BoundField
DataField="FirstName"/>
<asp:BoundField
DataField="LastName"
/>
</Columns>
</asp:GridView>
<asp:ObjectDataSource
ID="ObjectDataSource1"
TypeName="ProductsInfo3" 'riga che dà errore
SelectMethod="GetProducts"
UpdateMethod="UpdateProduct"
DeleteMethod="DeleteProduct"
Runat="Server" />
</form>
</body>
</html>
Forse devo separare la classe in un altro file ,compilarla e quindi inserirla nel codice asp?Datemi un aiuto! Grazie tanto.
