Web Forms :: Page Cannot Be Fired?

Nov 9, 2010

One of my page has an event to redirect to a crystal report viewer page.

However, the page cannot be fired.

No error but open with blank page.

[Code]....

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[Code]....

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[Code]....

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Feb 8, 2011

I am getting this error when click on page no 2 of grid view on first page it is working correctly My source code of grid view is

<asp:GridView ID="GridView1" runat="server" Width="738px" CellPadding="4" ForeColor="#333333" AllowPaging="True" >
<RowStyle BackColor="#FFFBD6" ForeColor="#333333" />
<FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
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And c# code is
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class Time_keeping_system : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
private void Page_PreInit(object sender, EventArgs e)
{
if (Session["USERNAME"] == null)
{
this.MasterPageFile = "MasterPage.master";
}
else
{
this.MasterPageFile = "MasterPage2.master";
}
}
protected void Calendar1_SelectionChanged(object sender, EventArgs e)
{
//TextBox1.Text = Calendar1.SelectedDate.ToShortDateString();
TextBox1.Text = Calendar1.SelectedDate.ToString("dd/MM/yyyy");
}
protected void Button1_Click(object sender, EventArgs e)
{
if (TextBox1.Text == "*")
{
SqlCommand cmd;
SqlConnection con = new SqlConnection("Data Source=SUNTECH-812ECD7\SQLEXPRESS;Initial Catalog=suntech;Integrated Security=True;");
cmd = new SqlCommand("select ld.username, ld.login_date,ld.login_time,wp.Project_Id,wp.Project_Of,wp.Project_Name,wp.Start_time,wp.end_time, bd.break_for,bd.break_time,bd.break_over_time,l.logout_time from login_details ld inner join working_projects
wp on ld.login_date= wp.Date join break_details bd on ld.login_date = bd.login_date join logout l on bd.login_date= l.logout_date where ld.username ='" + DropDownList1.SelectedValue + "'");
//cmd = new SqlCommand("Select * from " + DropDownList3.SelectedItem + " where project_name like ''" + TextBox1.Text + "''");
//cmd.ExecuteNonQuery();
con.Open();
cmd.Connection = con;
//SqlDataReader reader = cmd.ExecuteReader();
//GridView1.DataSource = reader;
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
GridView1.DataSource = ds;
GridView1.DataBind();
con.Close();
// reader.Close();
}
else
{
SqlCommand cmd;
SqlConnection con = new SqlConnection("Data Source=SUNTECH-812ECD7\SQLEXPRESS;Initial Catalog=suntech;Integrated Security=True;");
cmd = new SqlCommand("select ld.username, ld.login_date,ld.login_time,wp.Project_Id,wp.Project_Of,wp.Project_Name,wp.Start_time,wp.end_time, bd.break_for,bd.break_time,bd.break_over_time,l.logout_time from login_details ld inner join working_projects
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DataSet ds = new DataSet();
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}
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{
}
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Forms Data Controls :: Selected Index Changed Event Fired On Page PostBack?

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On Button click(postback), my dropdownlist of gridview is getting blank, so i m getting error of "Object Reference...." on the line "ddl.selecteditem.value"Also, dropdownlist's selectedindexchanged event is fired on Button Click(Page Postback), which is making the dropdownlist to go blank. AutoPostBack of dropdownlist is set as False,

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So I have a GridView control with autogenerated column set to true, it also has autogenerated Edit and Delete buttons, sorting and paging, and also I am binding this same gridview to multiple data sources at runtime. All is working well.

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Below is the code I used to dynamically add footer row:

[Code]....

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Jan 5, 2011

I have a page on which everything is loaded dynamically.

There is a Gridview (AutoGenerateColumns=true) and in the RowDataBound I check every column for a boolean datatype. If found I add a checkbox (autopostback=true) to the cell and register the CheckedChanged event.
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protected void Page_Load(object sender, EventArgs e) {
LoadGrid();
}

But this is very expensive and causes that the db request will be executed twice. If I changed the code to what I want:

protected void Page_Load(object sender, EventArgs e) {
if (!this.IsPostBack)
loadGrid();
}

I get no CheckedChanged event.

Is there a possibility to get:

- Adding a Checkbox in RowDataBound
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I am using ASP button its working properly at client side but on server side its not firing.

<div style="text-align: center">
<div>
<div id="UserName">
<b>LoginName</b>
<asp:TextBox ID="txt_LoginName" runat="server"></asp:TextBox>
</div>
</div>
<div>
<div id="Password">
<b>Password </b>
<asp:TextBox ID="txt_Password" TextMode="Password" runat="server"></asp:TextBox>
</div>
</div>
<div style="text-align: right; width: 210px;">
<asp:Button ID="btn_SignIn" OnClientClick="LogInUser()" UseSubmitBehavior="false" runat="server" Text="Login`enter code here`" />
<asp:Label ID="lbl_InValidError" runat="server"></asp:Label>
</div>
</div>

Client Side Code:

function LogInUser()
{
var LoginName = document.getElementById("<%=txt_LoginName.ClientId %>").value;
var Password = document.getElementById("<%=txt_Password.ClientId%>").value;

[Code]....

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I have implement GridView Row Editing feature in my .net application using <asp:CommandField.
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I have a confusion regarding ajax call.when an ajax call is done why is it so that a page load event is fired when its not a ful page request.

My understanding is that a page load event should not be called on an asynchronous postback.

Can any1 explain me why this is happening?

here is the code:

aspx page:

[Code]....

aspx.cs page:

[Code]....

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I have an update panel on the parent page into which I load and remove a set of user controls.

Now, when a button is pressed on the user control, the events are fired but there are no changes in the page. For example:

Main Page

<updatePanelMain>
<childcontrol1>
<childcontrol2>
etc
ChildControl.ascx
<update panel 1>
<panel1/>
<panel2/>
<btn1/>
etc

So, if I want to hide panel 1 when btn1 is clicked etc, I simple use code such as panel1.visible = false.

All this gets executed but nothing happens to the page.

<asp:UpdatePanel ChildrenAsTriggers="false" UpdateMode="Conditional" ID="updatePanel"
runat="server" EnableViewState="true">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnSubmit" EventName="Click" />
</Triggers>
<ContentTemplate>

However, when I use placeholders instead of update panels in the child controls, I dont face any such problems.

<asp:PlaceHolder ID="placeholderTypeOfInvestor" runat="server">

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i have develop a custom control as shown below

[Code]....

[Code]....

Now in page load event i am trying to a access textbox (txtData) of my custome control as shown below

[Code]....

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[Code]....

A breakpoint is set on FillForm() and this method is called two times but I can't explain myself why this happens. I have client side javascript code, when the form is being send, the onsubmit method is also called twice... Where do I have to search?! Is it a (known) bug? Think I could get it to work with this Thread: [URL] But why is the event fired within the onblur-event when it's fired anyway??

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In my current web application I have a listbox containing large number of elements. I have used an ajax listsearchextender to help the users in selecting the elements. I have set the autopostback property of listbox true. The application is working fine as expected in internet explorer. But in firefox while I am typing some text in search lable of listsearchextender the selectedIndexChanged event is fired and the page is posted back. So I am not able to selected the item properly using list search extender control. Can you please suggest me how can I stop the selectedIndexChanged event.

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I am using a baspage class for my session checking by the following code

[Code]....

My rest of the pages are being inherited from above basepage class. but the problem is that all the pages inherited from basepage class are not firing the event Page_Init...?

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I have parent page which loads child control which in turn contains DataGrid with template field and button has associated Click() event with it. Problem is that Click() event is not actually called at all. Sample code is below.

UserControl [Code]....
Parent Page
[Code]....

I put debugger into LinkButton1_Click event of user control but it never goes there.

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i was debugging a test page when i noticed that its init and load event handlers are being called twice.

i found out by search that this may arise due to some html tags which im not using in my page,

also some line:

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load,Me.Load

may cause this problem.

i use c# in the code behind aspx, if such line is the problem, in which file should i look for?

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i am using jquery flexi gride in web page and it is working fine .But now the problem is ocured when i click button to call server side event.I am not able to find out. My button is as fallows and i am

[Code]....

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