Web Forms :: Reference Web Control From Shared Sub?
Oct 18, 2010I need reference a Treeview from a shared sub so I can run a databind on it after the the sub has finished doing it's thing.
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Similar Messages:
MVC :: Reference To A Non-shared Member Requires An Object Reference In Code Generated?
Oct 4, 2010I am working on converting a project from C# to VB and am facing this weird issue. 1 page cannot compile and I get the reference error, but the weird thing is that the compiler shows the error as coming from ASP.NET generated code. Visual Studio shows me that error is coming from my ASPX page. I cannot seem to figure out why or where this error is occuring. Also if I take the inherits attribute out I don't get the compilation error. The code in aspx page is below:
[Code]....
DataSource Controls :: Reference To A Non-shared Member Requires An Object Reference
Apr 22, 2010I am using VS2005, and a newbie at table adapters, DAL & BLL. I have a single dataset (in DAL) and 2 classes (in BLL) named Class1.vb and Class2.vb.
When I try to call a function from Class1 within Class2 I get the error "Reference to a non-shared member requires an object reference".
Here is a sketch of my code structure:
[Code]....
Reference To A Non-shared Member Requires An Object Reference?
Oct 8, 2010I do not receive this error when I open my website application in vs 2005. When I open in vs 2008, I get this error. What gives?
These lines are underlined in blue:
[Code]....
Businesslogic area is imported into each of 3 pages with this line.
Private Shared Vs Public Shared Vs Protected Shared
Jan 5, 2010let me know what does these access modifiers means.private shared vs public shared vs protected shared
View 5 RepliesWeb Forms :: AJAX Control Toolkit Not Working On Shared Hosting?
Apr 19, 2013I have crated a web page in which i have used some ajax extension its running properly here
but when i have host that page it is giving error
CodeFile="Login.aspx.cs" Inherits="Login" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
how to resolve this error
Web Forms :: Reference A Elements Of One Control From Other?
Sep 16, 2010how user controls can communicate with each other within an asp.net application. I am facing many obstacles at the moment regarding this problem. For example, is it possible to set the visible property of a panel on one user control based on what happens in another?
Another example would be: Can I set the text of a label in one control to be the value of some other property from another control's class like.... Me.PreContentColumn.ColumnID = LocalProduct.PreContentColumnId.
Web Forms :: Can't Reference Control In Code Behind?
Oct 28, 2010I'm getting an "Object Reference Not Set to an Instance Of An Object Error" in a Web User Control that I've created when referencing any control in the Code Behind. Intellisense reports that the control exists in the aspx, but whenever I build and run I get that error.
[Code]....
Initially, the error occurs on this line...
[Code]....
Web Forms :: Assign User Control From Another User Control ? Giving Error Object Reference Is Not Set An Instance?
Feb 17, 2011I am trying to assign user control from another user control ..first time its binding control successfully but when we refresh the data its giving error
saying "Object reference is not set an instance".
how to refresh data from another user control ...
My senerio below :
1 Aspx page
2. User control
calling usercontrol databinding method from aspx page but once it get refreshed ,not allowed to bind it again..
Web Forms :: Object Reference Not Set To An Instance In User Control
Jul 15, 2010i am trying to enter a value into a texbox that is placed inside a user control called CollectionRequest. i have referenced this user control in my code behind and created an instance of it but i seem to get the above error when i try to enter some manual text. code as follows:
protected CollectionRequest collReq;
protected void Page_Load( object sender, EventArgs e )
{
collReq = (CollectionRequest)LoadControl("~/CollectionRequest.ascx");
TextBox _txt_address = (TextBox)collReq.FindControl("txt_Address");
_txt_address.Text = "thisi is an address";
control has been referenced in source file
<%@ Reference Control="~/CollectionRequest.ascx"%>
i am caling this code in my Approval.ascx.cs code. both the user controls are displayed together in the default.aspx page one above the other.
AJAX :: Reference The Control Toolkit Dll In Order To Have Access To Control?
Sep 16, 2010MSDN documentation says that the ScriptManager class is part of the System.Web.UI namespace and I see that I can create a ScriptManager object programmatically. However, I don't see the ScriptManager control on the front-end. Do I need to reference the Ajax Control Toolkit dll in order to have access to control?
View 6 RepliesWeb Forms :: Object Reference Error While Rendering Menu Control
Sep 21, 2010I am having a problem with rendering a menu control inside a server control. I am getting an error in the RenderContents override method when I try to render the Menu Control. The error I am getting is an Object Reference error. The code is below...
[Code]....
Web Forms :: Can't Reference An Html Element From Code Behind In A User Control
Feb 2, 2010Here is the contents of my test.ascx file:
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="test.ascx.cs" Inherits="UserControls_test" %>
<p id="XXX">aaa</p>
and here is the contents of my test.ascx.cs file:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class UserControls_test : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
this.XXX.InnerHtml = "BBB";
}
}
I get an error when I refer to the id, "XXX" (underlined above) in code behind which reads: 'UserControls_test' does not contain a definition for 'XXX' and no extension method 'XXX' accepting a first argument of type 'UserControls_test' could be found (are you missing a using directive or an assembly reference?)
I have tried XXX.InnerHtml and I have tried this.XXX.InnerHtml and get same problem.
How do I successfully refer to ID'ed HTML elements in code behind?
Web Forms :: Register Or Add Reference Custom Control In Web Confige File?
Dec 25, 2010I have one Custom Control! I add reference in pages Like Below <%@ Register TagPrefix="cus" Namespace="Controls" %> at Run time There is No error ! Error Shown at deploy Time Unknown server tag 'cus:GridHeaderFilter'. My custom control is in App_Code folder With Name GridHeaderFilter.vb So How To add Or Register This Custom Control In web confige File
View 1 RepliesWeb Forms :: How To Reference A Master Page Control From A Static Class
Feb 15, 2011my MasterPage I have a label that reflects the name of the module that the user is currently in. I change the label text accordingly using the following ..
private void ChangePageTitle(string PageTitle)
{
Label lblPageTitle = (Label)Master.FindControl("lblPageTitle");
lblPageTitle.Text = PageTitle;
}
Instead of placing this method in the code-behind of every page, I want to put it in a single class and call it accordingly. I thought of using a static class but do not know how to reference the MasterPage.Can I use a static class? or do I place the method in the code-behind of one page and call Object.Method from the other pages?
Web Forms :: User Control Causing Null Reference Exception?
Oct 19, 2010I am stuck into a problem, i have a user control ProductListing.ascx that contains ListView binded to an object datasource, SelectMethod and SelectCountmethod are provided as well. Everything works fine but the problem started when i add another user control declarativlly Filter.ascx in the productListing.ascx. I want to assign value to a public property MaxPrice in Filter.ascx. I am trying to set this property in the SelectMethod of ObjectDataSource. Usercontrol "Filter.ascx" throws null reference exception when i try to set its MaxPrice Property.
I tried to acced the usercontrol in Databind method of ListView , it is accessible here but viewstate is empty at this point, i saved the value in viewstate in SelectMethod of objectDatasource but i cant access viewstate in ListView Databind. Its empty. Its a simple code and no rewriting to viewstate elsewhere.
Important: My Codebehind files are in a seperate project and .ascx files in seperate project
Forms Data Controls :: Programmatically Reference Control Within An ItemTemplate?
Feb 8, 2010I'm trying to programatically reference a FileUpload control which I have within an ItemTemplate. I get a 'Name FileUpload1 is not declared' error message. Code below:
Code is as follows:
[Code]....
[Code]....
Forms Data Controls :: Directly Reference Control Value In SQL Command?
Jan 29, 2010I wish to know if it is possible to directly reference a control's value within an SQL Command? I remeber seeing something that caught my attention at one time, but I can't seem to remember where I found it. I am just trying to see if this method could work without having to declare parameters. Here is a sample idea of what I am trying to use:
[Code]....
Forms Data Controls :: Cannot Reference Text Value In Footer Of Gridview Control
Sep 19, 2010I am trying to implement adding a new record using the Gridview footer.
I have an example that works finethat I got from [URL]
My situation is a little different .. as I am using master page and the Gridview is in a page derived from the master page.
I have tried:
Dim txtNewName As TextBox = DirectCast(GridView1.FooterRow.FindControl("NewName"), TextBox)
"NewName" is the ID of the textbox in the footer of the Gridview.
When I try referencing ... txtNewName.Text ... it returns a null value.
There must be some trick to referencing this .Text value when using the Gridview that is within a Content Place Holder that results when using a page that was created using a master page.
Web Forms :: Reference Control On Third Level Master Page From Content Base Class?
Aug 8, 2010I am attempting to access a textbox control on a master page from a code behind base class but having problems. I have 3 levels of master pages. m1.master is the master page for m2.master which is the master page for m3.master.m3.master has a textbox as shown below
<%Master
Language="C#"
MasterPageFile="~/m2.master"
AutoEventWireup="true"
CodeFile="M3.master.cs"
Inherits="M3"
%>
<asp:Content
ID="Content5"
ContentPlaceHolderID="M2"
Runat="Server">
<asp:TextBox
ID="text1"
runat="server"
></asp:TextBox>
<asp:ContentPlaceHolder
ID="M3"
runat="Server"></asp:ContentPlaceHolder>
</asp:Content>
I have a content page c1.aspx that uses m3.master as its master page as shown below:
@
Page
Title=""
Language="C#"
MasterPageFile="~/m3.master"
AutoEventWireup="true"
CodeFile="c1.aspx.cs"
Inherits="_c1".................
WCF / ASMX :: How To Call A Non Shared Function In A Shared Function
Nov 12, 2010I want to call a non shared function in a shared function in which i am having a textbox control instance. Its giving no error but when i call this shared function from client callback it gives me no response
Any Idea except removing shared from the function.
Here is my code :
<WebMethod()> _
Public Shared Function myF() As String
Dim pg As New _Default
Return "{'Hello':'" & pg.setText & "'}"
End Function
Public Function setText() As String
Dim pg As New _Default
pg.TextBox1.Text = "This is a test"
Return pg.TextBox1.Text
End Function
C# - Add Reference To Method In Custom Control To A Child Control Created In That Same Custom Control
Feb 3, 2010I have a custom control that is based off the gridview control located at: here The control is basically a gridview that automatically creates a column of checkboxes that can be used to "check" individual rows in the gridview. During the gridview's "CreateColumns" event, the "checkboxcolumn" is created dynamically. The checkboxcolumn also contains another checkbox in the header that is used to "select/deselect all" checkboxes in the column. Since the gridview does not automatically remember the state of the checkboxes in the checkboxcolumn on postback, I added a method to the control called "SaveCheckBoxState" which stores the indexes of the checked rows in Viewstate, and then I modified the "OnRowDataBound" event to check the Viewstate and reset the checkboxes based on the Viewstate.
I then added a call to "SaveCheckBoxState" in the gridview's OnSorting and OnPageIndexChanging events. This works great so long as I'm sorting or changing pages. However, I need it to update the viewstate everytime someone clicks or unclicks one of the checkboxes. At this time, the checkboxes are rendered with an onclick event that calls some javascript to highlight the row, or in the case of the checkbox in the header, to select/deselect all checkboxes. I need to call the "SaveCheckBoxState" method from the javascript used by the customcontrol, or I need to find a way to modify viewstate from javascript and perform the same action as "SaveCheckBoxState".
I've tried adding the "SaveCheckBoxState" to the onclick event declaration in the checkboxes, but when run, it simply tells me that the method is undefined. It doesn't exist in the parent page, and I don't think I should have to make an event for the parent page to pass the click to. It seems to me this should be all self contained within the custom control. Does anyone know how I can acheive this? Here is the code for the gridview OnPreRender event where the onclick event of the checkbox is set:
protected override void OnPreRender(EventArgs e)
{
// Do as usual
base.OnPreRender(e);
// Adjust each data row
foreach (GridViewRow r in Rows)
{
// Get the appropriate style object for the row
TableItemStyle style = GetRowStyleFromState(r.RowState);
// Retrieve the reference to the checkbox
CheckBox cb = (CheckBox)r.FindControl(InputCheckBoxField.CheckBoxID);
// Build the ID of the checkbox in the header
string headerCheckBoxID = String.Format(CheckBoxColumHeaderID, ClientID);
// Add script code to enable selection
cb.Attributes["onclick"] = String.Format("ApplyStyle(this, '{0}', '{1}', '{2}')",
SelectedRowStyle.CssClass,
style.CssClass,
headerCheckBoxID);
// Update the style of the checkbox if checked
if (cb.Checked)
{
r.BackColor = SelectedRowStyle.BackColor;
r.ForeColor = SelectedRowStyle.ForeColor;
r.Font.Bold = SelectedRowStyle.Font.Bold;
}
else
{
r.BackColor = style.BackColor;
r.ForeColor = style.ForeColor;
r.Font.Bold = style.Font.Bold;
}
}
}
Reference Web Control Controls From Another Web Control?
Oct 22, 2010I have 2 controls within my master page that I am using. One is to display user information (which is static), and the other is to display basic data associated with that user (which is not static)
I am trying to use the page load of the non-static control to activate a panel within the static control, rather than activating the static control everytime I do a page load.
So I have the following structure:
[code]....
Currently I am using the Page content to control the control 1 and control 2.
Instead of repeating that code on every page content page, can I make control 2 deal with control 1 or vice versa?
How To Reference Web User Control
Jun 10, 2013I have created a web user control. It contains a table that has several image buttons. I want them to behave link a tab control. Here's the souce view:
Code:
<%@ Control Language="VB" AutoEventWireup="false" CodeFile="ProcessMenuContrl.ascx.vb" Inherits="ProcessMenuContrl" %>
<table >
<tr>
<td><asp:ImageButton ID="imgCustomerInformation" runat="server" CausesValidation="false" ImageUrl="~/Images/TabButton_CustomerInformation.jpg" /></td>
[Code] ....
From another page, I have placed this user control into the main content of the form. I have registered it at the top of the page:
Code:
<%@ Register src="ProcessMenuContrl.ascx" tagname="ProcessMenuContrl" tagprefix="uc1" %>
Here's portion of the source where you can see the control is placed under the MainContent of the page. :
Code:
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" Runat="Server">
<link href="Styles/QuoteStyles.css" rel="stylesheet" type="text/css" />
<uc1:ProcessMenuContrl ID="ProcessMenuContrl1" imgOrderInformation="" runat="server" />
When the user saves information that's on a form from this same page, I want to enable one of the image buttons (imgOrderInformation).
The problem is that i don't know how to reference this image button that's on the user control.
I've been trying to use Findcontrol, but must be doing it wrong.
Web Forms :: Object Reference Not Set To An Instance Of An Object Error When Remove Reference To Site Master Page
Sep 30, 2010in my default.aspx page i have a dropdown List and a textbox with a submit button below that there are 2 listbox... and the dropdown list holds the names of the listbox
my logic here is to select an item from the dropdown list and put some text in the text box and submit the form which will add an item to the listbox selected.. but when i do this i get an error saying Object reference not set to an instance of an object. i tried to figure out the problem and found that when i remove the reference to the Site Master Page it works fine and when i undo and apply my reference back to the Site Master Page i get the same error.
[Code]....