Newbie, gridview problem Asp.net 2005

verci · Aug 19, 2006

Hi
Can anyone help me I'm running Win XP Pro SP2, VS2005 Team, .Net Framework
2.0 and SQL Server2005, I can't delete records using the gridviews
deletecommand, the updatecommand works fine, edit and calcel all works fine
the problem is the delete part, I get the message:

-----------------------------------------------ERROR
MESSAGE----------------------------------------------------------------------------------------
Must declare the scalar variable "@productid".
Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information
about the error and where it originated in the code.

Exception Details: System.Data.SqlClient.SqlException: Must declare the
scalar variable "@productid".
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Here's my default3.aspx source code so far I've been stuck two days, thanks
and best regards.

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default3.aspx.vb"
Inherits="Default3" %>
!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

<title>Untitled Page</title>

</head>

<body>

<form id="form1" runat="server">

<div>

<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$
ConnectionStrings:NwindConnectionString %>"

SelectCommand="SELECT p.ProductID, p.ProductName, p.CategoryID,
c.CategoryName FROM Products p inner join Categories c on p.CategoryID =
c.CategoryID"

UpdateCommand="Update Products Set ProductID=@ProductID,
ProductName=@ProductName, CategoryID=@CategoryID where ProductID=@ProductID"

DeleteCommand="delete from products where productid=@productid">

</asp:SqlDataSource>

<asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$
ConnectionStrings:NwindConnectionString %>"

SelectCommand="SELECT [CategoryID], [CategoryName] FROM [Categories]">

</asp:SqlDataSource>

</div>

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataSourceID="SqlDataSource1" CellPadding="4" ForeColor="#333333"
GridLines="None" AllowPaging="True">

<Columns>

<asp:CommandField ButtonType="Image" CancelImageUrl="~/Images/Cancel.gif"
EditImageUrl="~/Images/WRITE2.gif"

ShowEditButton="True" UpdateImageUrl="~/Images/Update.gif"
DeleteImageUrl="~/Images/waste-trash.gif" ShowDeleteButton="True" />

<asp:TemplateField SortExpression="ProductID">

<EditItemTemplate>

<asp:Label ID="TextBox1" runat="server" Text='<%# Bind("ProductID")%>'
Visible=false></asp:Label>

</EditItemTemplate>

<ItemTemplate>

<asp:Label ID="Label2" runat="server" Text='<%# Bind("ProductID") %>'
Visible=false></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:BoundField DataField="ProductName" HeaderText="ProductName"
SortExpression="ProductName" />

<asp:TemplateField HeaderText="CategoryID" SortExpression="CategoryID">

<EditItemTemplate>

<asp

ropDownList ID="DropDownList1" runat="server"
DataSourceID="SqlDataSource2"

DataTextField="CategoryName" DataValueField="CategoryID" SelectedValue='<%#
Bind("CategoryID") %>' >

</asp

ropDownList>

</EditItemTemplate>

<ItemTemplate>

<asp:Label ID="Label1" runat="server" Text='<%# Bind("CategoryName")
%>'></asp:Label>

</ItemTemplate>

</asp:TemplateField>

</Columns>

<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />

<SelectedRowStyle BackColor="#D1DDF1" ForeColor="#333333" Font-Bold="True"
/>

<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center"
/>

<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />

<AlternatingRowStyle BackColor="White" />

<RowStyle BackColor="#EFF3FB" />

<EditRowStyle BackColor="#2461BF" />

</asp:GridView>

</form>

</body>

</html>

Muhammad Mosa · Aug 21, 2006

Sorry for making you wait,
Just add the property DataKeyNames="ProductID" to you grid view
This would work for you inshallah
Regards
--
Muhammad Mosa
Software Engineer & Solution Developer
MCT/MCSD.NET
MCTS: .Net 2.0 Web Applications
MCTS: .Net 2.0 Windows Applications

verci said:
Hi
Can anyone help me I'm running Win XP Pro SP2, VS2005 Team, .Net Framework
2.0 and SQL Server2005, I can't delete records using the gridviews
deletecommand, the updatecommand works fine, edit and calcel all works fine
the problem is the delete part, I get the message:

-----------------------------------------------ERROR
MESSAGE----------------------------------------------------------------------------------------
Must declare the scalar variable "@productid".
Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information
about the error and where it originated in the code.

Exception Details: System.Data.SqlClient.SqlException: Must declare the
scalar variable "@productid".
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Here's my default3.aspx source code so far I've been stuck two days, thanks
and best regards.

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default3.aspx.vb"
Inherits="Default3" %>
!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

<title>Untitled Page</title>

</head>

<body>

<form id="form1" runat="server">

<div>

<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$
ConnectionStrings:NwindConnectionString %>"

SelectCommand="SELECT p.ProductID, p.ProductName, p.CategoryID,
c.CategoryName FROM Products p inner join Categories c on p.CategoryID =
c.CategoryID"

UpdateCommand="Update Products Set ProductID=@ProductID,
ProductName=@ProductName, CategoryID=@CategoryID where ProductID=@ProductID"

DeleteCommand="delete from products where productid=@productid">

</asp:SqlDataSource>

<asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$
ConnectionStrings:NwindConnectionString %>"

SelectCommand="SELECT [CategoryID], [CategoryName] FROM [Categories]">

</asp:SqlDataSource>

</div>

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataSourceID="SqlDataSource1" CellPadding="4" ForeColor="#333333"
GridLines="None" AllowPaging="True">

<Columns>

<asp:CommandField ButtonType="Image" CancelImageUrl="~/Images/Cancel.gif"
EditImageUrl="~/Images/WRITE2.gif"

ShowEditButton="True" UpdateImageUrl="~/Images/Update.gif"
DeleteImageUrl="~/Images/waste-trash.gif" ShowDeleteButton="True" />

<asp:TemplateField SortExpression="ProductID">

<EditItemTemplate>

<asp:Label ID="TextBox1" runat="server" Text='<%# Bind("ProductID")%>'
Visible=false></asp:Label>

</EditItemTemplate>

<ItemTemplate>

<asp:Label ID="Label2" runat="server" Text='<%# Bind("ProductID") %>'
Visible=false></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:BoundField DataField="ProductName" HeaderText="ProductName"
SortExpression="ProductName" />

<asp:TemplateField HeaderText="CategoryID" SortExpression="CategoryID">

<EditItemTemplate>

<aspropDownList ID="DropDownList1" runat="server"
DataSourceID="SqlDataSource2"

DataTextField="CategoryName" DataValueField="CategoryID" SelectedValue='<%#
Bind("CategoryID") %>' >

</aspropDownList>

</EditItemTemplate>

<ItemTemplate>

<asp:Label ID="Label1" runat="server" Text='<%# Bind("CategoryName")
%>'></asp:Label>

</ItemTemplate>

</asp:TemplateField>

</Columns>

<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />

<SelectedRowStyle BackColor="#D1DDF1" ForeColor="#333333" Font-Bold="True"
/>

<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center"
/>

<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />

<AlternatingRowStyle BackColor="White" />

<RowStyle BackColor="#EFF3FB" />

<EditRowStyle BackColor="#2461BF" />

</asp:GridView>

</form>

</body>

</html>

verci · Aug 28, 2006

hey thanks!!!

Muhammad Mosa said:
Sorry for making you wait,
Just add the property DataKeyNames="ProductID" to you grid view
This would work for you inshallah
Regards
--
Muhammad Mosa
Software Engineer & Solution Developer
MCT/MCSD.NET
MCTS: .Net 2.0 Web Applications
MCTS: .Net 2.0 Windows Applications

verci said:

Hi
Can anyone help me I'm running Win XP Pro SP2, VS2005 Team, .Net
Framework
2.0 and SQL Server2005, I can't delete records using the gridviews
deletecommand, the updatecommand works fine, edit and calcel all works
fine
the problem is the delete part, I get the message:

-----------------------------------------------ERROR
MESSAGE----------------------------------------------------------------------------------------
Must declare the scalar variable "@productid".
Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information
about the error and where it originated in the code.

Exception Details: System.Data.SqlClient.SqlException: Must declare the
scalar variable "@productid".
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Here's my default3.aspx source code so far I've been stuck two days,
thanks
and best regards.

<%@ Page Language="VB" AutoEventWireup="false"
CodeFile="Default3.aspx.vb"
Inherits="Default3" %>
!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

<title>Untitled Page</title>

</head>

<body>

<form id="form1" runat="server">

<div>

<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$
ConnectionStrings:NwindConnectionString %>"

SelectCommand="SELECT p.ProductID, p.ProductName, p.CategoryID,
c.CategoryName FROM Products p inner join Categories c on p.CategoryID =
c.CategoryID"

UpdateCommand="Update Products Set ProductID=@ProductID,
ProductName=@ProductName, CategoryID=@CategoryID where
ProductID=@ProductID"

DeleteCommand="delete from products where productid=@productid">

</asp:SqlDataSource>

<asp:SqlDataSource ID="SqlDataSource2" runat="server"
ConnectionString="<%$
ConnectionStrings:NwindConnectionString %>"

SelectCommand="SELECT [CategoryID], [CategoryName] FROM [Categories]">

</asp:SqlDataSource>

</div>

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataSourceID="SqlDataSource1" CellPadding="4" ForeColor="#333333"
GridLines="None" AllowPaging="True">

<Columns>

<asp:CommandField ButtonType="Image" CancelImageUrl="~/Images/Cancel.gif"
EditImageUrl="~/Images/WRITE2.gif"

ShowEditButton="True" UpdateImageUrl="~/Images/Update.gif"
DeleteImageUrl="~/Images/waste-trash.gif" ShowDeleteButton="True" />

<asp:TemplateField SortExpression="ProductID">

<EditItemTemplate>

<asp:Label ID="TextBox1" runat="server" Text='<%# Bind("ProductID")%>'
Visible=false></asp:Label>

</EditItemTemplate>

<ItemTemplate>

<asp:Label ID="Label2" runat="server" Text='<%# Bind("ProductID") %>'
Visible=false></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:BoundField DataField="ProductName" HeaderText="ProductName"
SortExpression="ProductName" />

<asp:TemplateField HeaderText="CategoryID" SortExpression="CategoryID">

<EditItemTemplate>

<aspropDownList ID="DropDownList1" runat="server"
DataSourceID="SqlDataSource2"

DataTextField="CategoryName" DataValueField="CategoryID"
SelectedValue='<%#
Bind("CategoryID") %>' >

</aspropDownList>

</EditItemTemplate>

<ItemTemplate>

<asp:Label ID="Label1" runat="server" Text='<%# Bind("CategoryName")
%>'></asp:Label>

</ItemTemplate>

</asp:TemplateField>

</Columns>

<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />

<SelectedRowStyle BackColor="#D1DDF1" ForeColor="#333333"
Font-Bold="True"
/>

<PagerStyle BackColor="#2461BF" ForeColor="White"
HorizontalAlign="Center"
/>

<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />

<AlternatingRowStyle BackColor="White" />

<RowStyle BackColor="#EFF3FB" />

<EditRowStyle BackColor="#2461BF" />

</asp:GridView>

</form>

</body>

</html>

Click to expand...

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Newbie, gridview problem Asp.net 2005

verci

Muhammad Mosa

verci

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