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I read several posts online & verified the following: 1. AutoPostBack="true" 2. EnableViewState="True" (default) 3. CausesValidation = "False" (default) Also added the EnableViewState="true" on the page-level directive. Inspite of this I am unable to cause the SelectedIndexChanged event to trigger. I am using VS2010, VB.NET with no AJAX. I am populating my dropdownlist in the PageLoad event and on the condition If (Not IsPostback) Another issue is that my dropdownlist items are getting cleared on postback each time. So as a work around I added SQLDataSource on my aspx page and configured it as datasource to my dropdownlist and now the event is getting triggered properly, I am not sure why.
I am new to VB.NET and web development and I feel I am missing something obvious, like taking into consideration Page events chronology, please suggest. Thanks for all your help in advance.
<%@ Page Title="" Language="VB" MasterPageFile="~/MyMaster.master" AutoEventWireup="false" CodeFile="MyPage.aspx.vb" Inherits="MyPage" EnableViewState="true" %>
<asp:Content ID="Content1" ContentPlaceHolderID="MainPageContent" Runat="Server">
<center><h3>Title</h3></center><br />
<table width="500px">
<tr>
<td><asp:Label ID="Label1" Text="Label1 : " runat="server"></asp:Label></td>
<td><asp:DropDownList ID="ddl1" Width="200px" runat="server"
AutoPostBack="True"/></td>
</tr>
<tr><td></td></tr>
<tr>
<td><asp:Label ID="Label2" Text="Label2 : " runat="server"></asp:Label></td>
<td><asp:DropDownList ID="ddl2" Width="200px" runat="server"
AutoPostBack="True" /></td>
</tr>
<tr><td></td></tr>
<tr>
<td><asp:Label ID="Label3" Text="Label3 : " runat="server"></asp:Label></td>
<td><asp:DropDownList ID="ddl3" Width="200px" runat="server"
AutoPostBack="True" /></td>
</tr>
</table><br />
<asp:Label ID="lblError" ForeColor="Red" runat="server" />
</asp:Content>
Imports System.Data
Imports System.Data.SqlClient
Imports System.Configuration.ConfigurationManager
Partial Class MyPage Inherits System.Web.UI.Page
Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
If IsPostBack Then
Exit Sub
End If
PopulateData()
End Sub
Private Sub PopulateData()
Dim da As New SqlDataAdapter
Dim ds1, ds2, ds3 As New DataSet
Try
Using conn As New SqlConnection(ConnectionStrings.Item("DataConnectionString").ToString)
Using cmd As New SqlCommand("MySP1", conn)
cmd.CommandType = CommandType.StoredProcedure
conn.Open()
da.SelectCommand = cmd
da.Fill(ds1)
cmd.CommandText = "MySP2"
da.SelectCommand = cmd
da.Fill(ds2)
cmd.CommandText = "MySP3"
da.SelectCommand = cmd
da.Fill(ds3)
conn.Close()
End Using
End Using
ddl1.DataSource = ds1.Tables(0)
ddl1.DataValueField = "Col1"
ddl1.DataTextField = "Col2"
ddl1.DataBind()
ddl1.Items.Insert(0, New ListItem(String.Empty, String.Empty))
ddl1.SelectedIndex = 0
ddl2.DataSource = ds2.Tables(0)
ddl2.DataValueField = "Col1"
ddl2.DataTextField = "Col2"
ddl2.DataBind()
ddl2.Items.Insert(0, New ListItem(String.Empty, String.Empty))
ddl2.SelectedIndex = 0
ddl3.DataSource = ds3.Tables(0)
ddl3.DataValueField = "Col1"
ddl3.DataTextField = "Col2"
ddl3.DataBind()
ddl3.Items.Insert(0, New ListItem(String.Empty, String.Empty))
ddl3.SelectedIndex = 0
Catch ex As Exception
'todo get a proper error message here
lblError.Text = "Error"
End Try
End Sub
Protected Sub ddl_SelectedIndexChanged(sender As Object, e As System.EventArgs) Handles ddl1.SelectedIndexChanged, ddl2.SelectedIndexChanged, ddl3.SelectedIndexChanged
ClientScript.RegisterStartupScript(Me.GetType(), "myalert", "alert('" & "test" & "');", True)
End Sub
End Class
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You need to bind event "ddl_SelectedIndexChanged" with dropdown list.
<asp:DropDownList ID="ddl3" runat="server" OnSelectedIndexChanged="ddl_SelectedIndexChanged" AutoPostBack="True" />
Parwej Ahamad
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Thanks for the help. But in VB.NET the event handling happens in the code-behind using "Function Handles control.event" kind of signature.
You can find that in the code I have posted in my original question.
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Can anybody suggest how to send some List of objects from an Asp.Net app to another one.
My Reading-o-Meter
Previous -> Read "CLR via C#" by Jeffrey Richter.
Current -> Exploring WCF thru Apress' "Pro WCF" by Chris Peiris and Dennis Mulder.
Next -> Need to read "The Art of Computer Programming" by Donald E. Knuth.
My blog - My recent article
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Post data through the Service in other application.
Parwej Ahamad
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You can use WebClient class or WebRequest to post data to another site. There are lots of samples online.
There are only 10 types of people in the world, those who understand binary and those who don't.
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Dear Friends,
I am recent very high honor college graduates with A.S. Degree in Computer Programming, and I really want to be a good .NET developer.
Most of requirements for Entry Level/Junior Level .NET Developer Position in my living areas demand at least more two years of working experience in .NET environment.
As you know that fresh college graduates have no or little working experience on specific field/area except someone who was working on that field/area before he/she joins a college.
The question that I would like to ask this forum is what is ASP.NET Web forms stuff equivalent two or more working experience I should know IN SHORT PATH (I am just having 4 and 1/2 months old baby that I need to feed him; Therefore, I must to get the job in next two months!!!), and how I can have them?
Thank you for your understanding and kindly helps. Now, if you or someone you know could hire a guy like me, it would be greatly appreciated. - Thanks again.
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I think this kind of General question you should ask in some relevant forum like The Lounge.
But anyhow this is my suggestions to your query:
First thing I will suggest (as you are a fresh graduate) you is build your basic foundation to a great extent by reading some books on .Net and upgrade yourself on other relevant skills, read, practice and understand the concepts daily as much as you can. And parellely try for some jobs by posting your profile in Job portals like Naukri.com. I think that there should be some opportunities for entry level guys also in the market. Be in touch with your friends and relatives who are already working in Software industry for any job reference. If possible join some good institute for learning relevant technologies.
According to my understanding, you have to have good skillset in these: .Net framework, OOP, C#, ASP.Net (if you are interested in Web apps), Win forms/wpf (if you are interested in Desktop apps), Web services/wcf.
Send your CV to hameed dot in at hotmail dot com. I will forward to my HR, they may contact you if any entry level opportunity in our organization.
My Reading-o-Meter
Previous -> Read "CLR via C#" by Jeffrey Richter.
Current -> Exploring WCF thru Apress' "Pro WCF" by Chris Peiris and Dennis Mulder.
Next -> Need to read "The Art of Computer Programming" by Donald E. Knuth.
My blog - My recent article
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protected void Text2PDF()
{
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
//frm.Controls.Add(appmessage);
//frm.Controls.Add(GVPostApplied);
//frm.RenderControl(hw);
//message.RenderControl(hw);
HtmlForm frm = new HtmlForm();
//appmessage.Parent.Controls.Add(GVPostApplied);
frm.Controls.Add(txtestablishname);
frm.Controls.Add(Txtyear);
frm.Controls.Add(TxtownerS);
frm.Controls.Add(Txtlocation);
frm.Controls.Add(Txtdist);
frm.Controls.Add(Txtblock);
frm.Controls.Add(txtVill);
frm.Controls.Add(txtState);
frm.Controls.Add(txtPIN);
frm.Controls.Add(txtTelePN);
frm.Controls.Add(txtFax);
frm.Controls.Add(txtEmail);
frm.Controls.Add(txtMObile);
frm.Controls.Add(txtOwnerName);
frm.Controls.Add(txtIncharge);
frm.Controls.Add(txtDesig);
frm.Controls.Add(Txtqualitype);
frm.Controls.Add(txtQuali);
frm.Controls.Add(Txtdist2);
frm.Controls.Add(Txtblock2);
frm.Controls.Add(txtViilTown);
frm.Controls.Add(txtsatate2);
frm.Controls.Add(txtPin2);
frm.Controls.Add(Txtstd2);
frm.Controls.Add(txtfax2);
frm.Controls.Add(txtemail2);
frm.Controls.Add(txtMobile2);
frm.Controls.Add(ListBoxmedicineoffer);
frm.Controls.Add(ListBoxinpatient);
divpdf.Parent.Controls.Add(CheckBoxList1);
divpdf.Parent.Controls.Add(GridViewOPD);
divpdf.Parent.Controls.Add(GridViewBed);
divpdf.Parent.Controls.Add(GVPostessen);
//frm.Controls.Add(CheckBoxList1);
frm.Controls.Add(Txtinpatientbed);
frm.Controls.Add(txtTotalarea);
frm.Controls.Add(TxtArea);
frm.Controls.Add(txtContructedArea);
frm.Controls.Add(txtbiolicence);
frm.Controls.Add(txtNoofstaff);
frm.Controls.Add(txtDDno);
frm.Controls.Add(txtDDdate);
frm.Controls.Add(txtDDamount);
frm.Controls.Add(txtDDbank);
frm.Controls.Add(Txtpayment_type);
frm.Attributes["runat"] = "server";
txtestablishname.RenderControl(hw);
Txtyear.RenderControl(hw);
TxtownerS.RenderControl(hw);
Txtlocation.RenderControl(hw);
Txtdist.RenderControl(hw);
Txtblock.RenderControl(hw);
txtVill.RenderControl(hw);
txtState.RenderControl(hw);
txtPIN.RenderControl(hw);
txtTelePN.RenderControl(hw);
txtFax.RenderControl(hw);
txtEmail.RenderControl(hw);
txtMObile.RenderControl(hw);
txtOwnerName.RenderControl(hw);
txtDesig.RenderControl(hw);
txtIncharge.RenderControl(hw);
Txtqualitype.RenderControl(hw);
txtQuali.RenderControl(hw);
Txtdist2.RenderControl(hw);
Txtblock2.RenderControl(hw);
txtViilTown.RenderControl(hw);
txtsatate2.RenderControl(hw);
txtPin2.RenderControl(hw);
Txtstd2.RenderControl(hw);
txtfax2.RenderControl(hw);
txtemail2.RenderControl(hw);
txtMobile2.RenderControl(hw);
ListBoxmedicineoffer.RenderControl(hw);
ListBoxinpatient.RenderControl(hw);
txtTotalarea.RenderControl(hw);
TxtArea.RenderControl(hw);
txtContructedArea.RenderControl(hw);
Txtinpatientbed.RenderControl(hw);
txtbiolicence.RenderControl(hw);
txtNoofstaff.RenderControl(hw);
txtDDno.RenderControl(hw);
txtDDdate.RenderControl(hw);
txtDDamount.RenderControl(hw);
txtDDbank.RenderControl(hw);
Txtpayment_type.RenderControl(hw);
divpdf.RenderControl(hw);
//string Imagepath1 = Server.MapPath("~") + "\\Images\\NRHMlogo.png";
//string Imagepath2 = Server.MapPath("~") + "\\Images\\cgLogo.gif";
StringBuilder html = new StringBuilder();
html.Append("<html xmlns=\"http://www.w3.org/1999/xhtml\">");
html.Append("<head></head>");
html.Append("<body>");
html.Append("<form id=\"form1\" runat=\"server\">");
html.Append("");
html.Append(" ");
//html.Append("");
html.Append("");
html.Append(" | | NATIONAL RURAL HEALTH MISSION, RAIPUR | |
//html.Append("Online Candidate Registration Acknowledgement,हनुमान जी का जन्म
");
html.Append(sw.GetStringBuilder().ToString());
html.Append("</form>");
html.Append("</body>");
html.Append("</html>");
HttpContext context = HttpContext.Current;
TextReader reader = new StringReader(html.ToString());
//Create PDF document
Document document = new Document(PageSize.A4);
HTMLWorker parser = new HTMLWorker(document);
string PDF_FileName = Server.MapPath("~") + "\\Upload\\DwnAck.pdf";
PdfWriter.GetInstance(document, new FileStream(PDF_FileName, FileMode.Create));
document.Open();
try
{
parser.Parse(reader);
}
catch (Exception ex)
{
//Display parser errors in PDF.
Paragraph paragraph = new Paragraph("Error!" + ex.Message);
Chunk text = paragraph.Chunks[0] as Chunk;
if (text != null)
{
text.Font.Color = BaseColor.RED;
}
document.Add(paragraph);
}
finally
{
document.Close();
DownLoadPdf(PDF_FileName);
}
}
vsagar
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The error is pretty clear. You'll need to use a shorter path.
There are only 10 types of people in the world, those who understand binary and those who don't.
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I rewrote my checkout system, using the update panel and ScriptManager, not the ToolScriptManager
My goal is to get rid of the AjaxControlToolkit, and replace it with Jquery
So I spent 3 weeks rewriting the checkout system, tested it for 2 days, and deployed it last Thurs, July 18, 2013. 10 orders go through no problem, and then Monday morning, the phone rang off the hook.
So I get this pile of website error forms, and all of them say Windows 7, IE, can't create an account.
The first step in checking out is creating an account, then you go to the next page, and enter your credit card information.
So I guess the user clicks the image button inside the update panel called "create account", the progress indicator comes up, and nothing happens.
I went back and tested and tested monday and tuesday, on Windows Vista IE 9, I finally saw the problem sort of, and adjusted my jquery validation script. Every once in a while while testing, it hangs, but not in the last 2 days, Wed and thurs.
I'm clueless here. In fact I'm not even sure if I still have the problem.
I'm looking for someone I can trust to test it out and perhaps look at the browser source to confirm that the scriptmanager looks OK, confirm operation of the create account.
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This site is best used when asking specific questions. There are other sites where you can hire people to do the work.
However, it can be extremely difficult to fix a bug when you cannot reproduce it. Reproducing the error should be the first step.
There are only 10 types of people in the world, those who understand binary and those who don't.
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I put together another Windows 7 machine, but I couldn't reproduce the problem, but I made adjustments to the web server, and no error reports have been submitted since last wednesday. I took out the jquery.ui.min.js last week, and seems good now.
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[EDIT]
I posted something that was dated from 2 years ago, and don't want bad information to get out there.
modified 25-Jul-13 13:11pm.
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jkirkerx wrote: Have you heard about it?
Yes, when Scott Hanselman posted about it[^] nearly two years ago.
If you want ASP.NET to assume that all browsers can handle script, you can set Page.ClientTarget = "uplevel" in the Page_Init event.
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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I just figured that out about 45 minutes ago.
Oh so much for using my iPhone last night to do research. I looked for the date on the post, but coundn't find it.
So i Went to download the fix, and it was unavailable, then went back to look at the post date, and it was in 2011.
So I guess I'm back to Monday, trying to figure out why my problem.
I'm going to delete this post in about 10 minutes, but hopefully you get this message.
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I have created asp.net web application to show slide show using SlideShowExtender. Here i need to add image path which is located in other system. i have give like
string[] imagenames = System.IO.Directory.GetFiles(@"\\ipaddress\d$\WebSite\images\");
It is working fine if i run through application. If i host it in IIS and run. Image is blank. How to give image path.
Anybody knows please reply me.
Thanks in advance.
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Form which account, your web applications is running on IIS. Most probably that account does not have permission for accessing file system.
Cheers!!
Brij
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You'll have to make a network share to that location to use that code, or
create a web service to get the list of image url's from the other box.
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I am having table in Parent Child relation as following:
ID Node Name ParentID
1 Node 1 0
2 Node 2 0
3 Node 21 2
4 Node 22 2
5 Node 21 1 3
6 Node 3 0
7 Node 4 0
8 Node 41 7
I want the to write the all the child node as following output using the Entity Framework (not code Firt) or using simple dataTable.
Expected Output:
Node 1
Node 2 > Node 21 > Node 21 1
Node 2 > Node 22
Node 3
Node 4 > Node 41
Thanks,
Rohit
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I think you can achieve through the self join, please follow below query:
var query =
from e1 in Employee
join e2 in Employee on e1.ManagerID equals e2.ID
select new
{
Employee = e1.FirstName + " " + e1.LastName,
Manager = e2.FirstName + " " +e2.LastName
};
Parwej Ahamad
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no, I am not looking for only 2 level as Employee and his Manager.
I need the display the full path of each child and if there is any child of any parent in that case need not to display the parent just display child full hierarchy.
Thanks,
Rohit
modified 22-Jul-13 4:56am.
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I have a large enterprise website, which was build and published as precompiled / nonupdatable. Now I have an issue that is happening only at one customer site. So, I wanted to create a simple test.aspx file inside the website in question, and run it at the customer site -- without having to recompile and re-publish the original website. Is there any workaround to achieve this?
Below is the error that received when I copy and try to run my test.aspx page:
The file '/MyWebApp/test.aspx' has not been pre-compiled, and cannot be requested.
Environment is: Windows 2008 R2 - 64bit OS
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Yes possible, first publish on your local environment then copy the compiled page on specific local and reference dll in bin. I would be worked.
Thanks,
Parwej
Parwej Ahamad
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