My Personal Blog's
ASP.NET
Collapsible Drag & Drop Panels like Wordpress Dashboard using Jquery and ASP.NET
Apr 25th
I found a great article that teach us how to create drag and drop panel like dashboard in wordpress panel.
In this sites: http://webdeveloperplus.com/jquery/saving-state-for-collapsible-drag-drop-panels/ shows us how to create the drag and drop panel and save the state in PHP and mysql. In this article, I will show the code in ASP.NET using SQL Server 2005.
VB.NET – ASP.NET communication between user control and web page using event handler
Apr 21st
In this post, we want to show how button in user control communicate with web page in asp.net
First create user control called button.ascx.
Add 3 button, name it btnSave, btnEdit and btnCancel.
in button.ascx back code, add this code:
Public Partial Class button
Inherits System.Web.UI.UserControl
Public Event btnSaveHandler As System.EventHandler
Public Event btnEditHandler As System.EventHandler
Public Event btnCancelHandler As System.EventHandler
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
End Sub
Protected Sub btnSave_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnSave.Click
RaiseEvent btnSaveHandler(Me, New EventArgs())
End Sub
Protected Sub btnEdit_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnEdit.Click
RaiseEvent btnEditHandler(Me, New EventArgs())
End Sub
Protected Sub btnCancel_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnCancel.Click
RaiseEvent btnCancelHandler(Me, New EventArgs())
End Sub
End Class
In Default.aspx, add 1 label called label1, then drag the button.ascx to the default.aspx.
Add code in default.aspx as below:
Partial Public Class _Default
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Label1.Text = Request.QueryString("label")
AddHandler button1.btnCancelHandler, AddressOf cancelClick
AddHandler button1.btnEditHandler, AddressOf editClick
AddHandler button1.btnSaveHandler, AddressOf saveClick
End Sub
Private Sub cancelClick(ByVal sender As Object, ByVal e As EventArgs)
Response.Redirect("default.aspx?label=Cancel")
End Sub
Private Sub editClick(ByVal sender As Object, ByVal e As EventArgs)
Response.Redirect("default.aspx?label=Edit")
End Sub
Private Sub saveClick(ByVal sender As Object, ByVal e As EventArgs)
Response.Redirect("default.aspx?label=Save")
End Sub
End Class
Run it, you will see that button that we create in user control can be manipulate and used in default.aspx
See other example for communication between user control and page in:
http://www.codeproject.com/KB/user-controls/Page_UserControl.aspx
ASP.NET – GridView – Get Hidden Field Value in RowCommand
Sep 21st
There is a problem when we set BoundField visibility to false, the column isn’t rendered to the client. A work around would be to use a HiddenField within a TemplateField instead.
<asp:TemplateField HeaderText="MemberID">
<ItemTemplate>
<asp:LinkButton ID="lbtn_memberid" runat="server" CommandName="GetMemberID" CommandArgument='<%# DataBinder.Eval(Container, "DataItem.memberid") %>'
Text='<%# DataBinder.Eval(Container, "DataItem.memberid") %>'></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:HiddenField ID="fieldid" runat="server" Value='<%# Eval("fieldname") %>' />
</ItemTemplate>
</asp:TemplateField>
Back Code:
Protected Sub gridview1_ItemCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles gridview1.RowCommand
If e.CommandName = "GetMemberID" Then
Session("GetMemberID") = e.CommandArgument.ToString()
Dim gv As GridViewRow = DirectCast(DirectCast(e.CommandSource, LinkButton).NamingContainer, GridViewRow)
Dim i As Integer = gv.RowIndex
Dim row As GridViewRow = gridview1.Rows(i)
Dim hidden As HiddenField = DirectCast(row.Cells(0).FindControl("fieldid"), HiddenField)
Dim fieldid As Integer = CInt(hidden.Value)
End If
End Sub
