How can I get data value from datasource

I Have extracted data from an access database created a datagrid which works great. In the data grid I am only using part of the columns extracted from the data base. The dataTarps_Commands sub is executed when a link button is clicked in the datagrid. I am able to retive item data that is displayed using bound columns in the data grid  but I have not been able get cell information for columns not displayed or displayed using template columns. 

Is there a way to get information from the data source in a function. Ideally I would like to address these cells using the header name and current row.
Thanks,
Dan

<%@ Page Language="VB" Debug="True" %>
<script runat="server">
Sub Page_Load(sender as Object, e as EventArgs)

If Not Page.IsPostBack then
BindTarpsGrid()
labelPost.text = "Nothing has been selected yet."
End If
End Sub

Sub BindTarpsGrid()

dgTarps.DataSource = GetTarps("Clear Tarp")
dgTarps.DataBind()

End Sub


Function GetTarps(ByVal name As String) As System.Data.IDataReader
Dim connectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0; Ole DB Services=-4; Data Source=C:\Inetpub\wwwr"& _
"oot\creativesheltersNet\fpdb\CreativeShelters.mdb"
Dim dbConnection As System.Data.IDbConnection = New System.Data.OleDb.OleDbConnection(connectionString)

Dim queryString As String = "SELECT [tblTarps].* FROM [tblTarps], [tblTarpsDescriptions] WHERE (([tblTarps].[N"& _
"ame] = [tblTarpsDescriptions].[Name]) AND ([tblTarps].[Name] = @Name) AND ([tblT"& _
"arps].[LWOrder] <> ""R"")) Order By SKU"
Dim dbCommand As System.Data.IDbCommand = New System.Data.OleDb.OleDbCommand
dbCommand.CommandText = queryString
dbCommand.Connection = dbConnection

Dim dbParam_name As System.Data.IDataParameter = New System.Data.OleDb.OleDbParameter
dbParam_name.ParameterName = "@Name"
dbParam_name.Value = name
dbParam_name.DbType = System.Data.DbType.String
dbCommand.Parameters.Add(dbParam_name)

dbConnection.Open
Dim dataReader As System.Data.IDataReader = dbCommand.ExecuteReader(System.Data.CommandBehavior.CloseConnection)

Return dataReader
End Function' Insert page code here

'
Sub dgTarps_Command(sender As Object, e As DataGridCommandEventArgs)

Select (CType(e.CommandSource, LinkButton)).CommandName

Case "Post"

labelPost.Text = "Posted Data: " & "- Grommets " & convert.ToString(e.Item.Cells(2).Text)
labelPost.Text += "<br>Price: " & Cstr(Csng(convert.ToString(e.Item.Cells(3).Text)))
labelPost.Text += "<br>Description: " & convert.ToString(e.Item.Cells(1).Text)

Case Else
' Do nothing.
End Select
End Sub
</script>
<html>
<head>
</head>
<body>
<form runat="server">
<p>
<asp:DataGrid id="dgTarps" runat="server" Font-Bold="True" Font-Names="Arial" Font-Size="12pt" CellPadding="3" BorderWidth="2px" BorderColor="Black" AutoGenerateColumns="False" onItemCommand="dgTarps_Command">
<AlternatingItemStyle backcolor="Silver"></AlternatingItemStyle>
<HeaderStyle horizontalalign="Center" backcolor="#6666CC"></HeaderStyle>
<Columns>
<asp:BoundColumn DataField="Size" HeaderText="Size"></asp:BoundColumn>
<asp:TemplateColumn HeaderText="Description">
<ItemTemplate>
<asp:Label id="LabelName" runat="server" text='<%# DataBinder.Eval(Container.DataItem,"Description" ) %>' ></asp:Label>
<asp:HyperLink id="HyperLink1" Text="<br>Click for canopy and tarp accessories" NavigateUrl="http://www.creativeshelters.com/DisplayAccessories.asp" runat="server" />
</ItemTemplate>
</asp:TemplateColumn>
<asp:BoundColumn Visible="False" DataField="Ties" HeaderText="Grommets"></asp:BoundColumn>
<asp:BoundColumn DataField="Price" HeaderText="Price" DataFormatString="{0:c}"></asp:BoundColumn>
<asp:BoundColumn DataField="ShipWt" HeaderText="Ship Wt"></asp:BoundColumn>
<asp:TemplateColumn HeaderText="Order">
<ItemTemplate>
<p id="" >
<asp:LinkButton id="lablePostit" CommandName="Post" runat="server">Post</asp:LinkButton>
</p>
</ItemTemplate>
</asp:TemplateColumn>
</Columns>
</asp:DataGrid>
</p>
<!-- Insert content here -->
</form>
<p>
</p>
<p id="">
<asp:Label id="labelPost" runat="server"></asp:Label>
</p>
</body>
</html>

Thanks,
Dan
0
dgrumbli
2/13/2005 7:38:17 AM
asp.net.presentation-controls 72751 articles. 3 followers. Follow

2 Replies
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Hello,

first of all I want to recommend the following link cause this article describe in detail using the FindControl method of a datagrid item... In search of ASP.Net controls.
In your code example you have to use this method for getting cell information of a template column regardless if in a datalist or in a datagrid. For example to get the content of the description field in the ItemCommand-event for the selected row you should use the following code:
Dim Description as string

Description = CType(e.Item.FindControl("LabelName"), Label).Text
HTH,
Karsten
0
kbrocksi_SEC
2/13/2005 6:10:00 PM
This works great and the article you referenced was very good background information. 

Thank you,
Dan
Thanks,
Dan
0
dgrumbli
2/14/2005 2:28:29 AM
Reply:

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