Custom Datagrid: Doesn't display and doesn't work
Hi all,
Hope someone can share their experience! I am trying to make a custom datagrid, only in appearance for now. Results:
1. On dragging the control from the VS toolbox: get a grey rectangle, not the table like look.
2. On running the Web page: no HTML.
<code>
Imports System.ComponentModel
Imports System.Web.UI.WebControls
Imports System.Web.UI
<DefaultProperty("Text"), ToolboxData("<{0}:custDG runat=server></{0}:custDG>")> Public Class custDG
Inherits DataGrid
Public Sub New()
Me.BorderColor = Drawing.Color.Chartreuse
Me.BorderStyle = BorderStyle.Double
End Sub
' VS generated. MSDN states these are for internal purposes.
Protected Overrides Sub CreateControlHierarchy(ByVal useDataSource As Boolean)
End Sub
' VS generated.
Protected Overrides Sub PrepareControlHierarchy()
End Sub
End Class
For a comparison, I successfully made a customised listbox - just cosmetic customisations. VS did not supply an generated code for this.
<code>
Imports System.ComponentModel
Imports System.Web.UI
<DefaultProperty("Text"), ToolboxData("<{0}:lstbox runat=server></{0}:lstbox>")> Public Class lstbox
Inherits System.Web.UI.WebControls.ListBox
Public Sub New()
Me.BackColor = Drawing.Color.Black
Me.BorderStyle = WebControls.BorderStyle.Dotted
End Sub
End Class
</code>
Is there something different about the DataGrid? Hope someone can shed some light on this.
Thanks.
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bluekiwi
3/4/2006 1:55:45 PM
asp.net.custom-server-controls
3498 articles. 
0 followers.
1 Replies
1265 Views
Some success....
Make two .dll's, one for the custom DataGrid control, the other, data access code. If I want to specify a stored procedure dynamically (on the fly), I have to put the data access code in a seperate .dll. The DataGrid class doesn't like having the code of function "getData" as it written, specifically this line: da.SelectCommand.CommandText = sproc.
So I have a drag n drop, custom look DataGrid with re-usable code for data access that takes any sproc.
One
----
Imports System.Web.UI.WebControls
Public Class custDG
Inherits DataGrid
Public Sub New()
Me.BackColor = Drawing.Color.Cornsilk
Me.BorderStyle = BorderStyle.Double
Me.BorderColor = Drawing.Color.Aqua
End Sub
End Class
Two
----
Imports System.Data.SqlClient
Public Class codeForCustomDG
Public Function getData(ByVal sproc As String) As DataSet
Dim ds As New DataSet
Dim da As New SqlDataAdapter
da.SelectCommand = New SqlCommand
da.SelectCommand.CommandText = sproc
da.SelectCommand.CommandType = CommandType.StoredProcedure
da.SelectCommand.Connection = New SqlConnection("data source=(local);integrated security=true;initial catalog=Northwind")
da.Fill(ds, "employees")
Return ds
End Function
End Class
In the Web form
-----------------
Dim cda As New codeForCustomDG
Me.CustDG1.DataSource = cda.getData("dbo.showEmployees")
Me.CustDG1.DataBind()
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bluekiwi
3/5/2006 2:43:34 PM
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