Web Forms :: Controls Not Showing Up In The Controls Collection?
Aug 25, 2010
I'm using the following code to search through the controls collection in a version 3.5 page:
CheckBox cbTest = new CheckBox();
RadioButtonList rblTest = new RadioButtonList();
String sID = "";
String sType = "";
[Code]....
The problem are none of the TextBox, Checkbox and other controls show up. There are over 50 controls on the page and only 5 show up and they are either Generic, Literal or HTMLHead controls. I've tried in both the load and button click procedures with no luck.
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Jul 26, 2010
I have a list of objects that I want to bind to a gridview. Creating that list and binding it works fine for most of the public properties in that list.
There are some objects contained in each of those objects... for instance there is an Address object.
object.Address.Line1;
object.Address.Line2;
When I bind this to my gridview, I have no issues with stuff like object.DateRegistered, but how can I access things like object.Address.WhatEverProperty? I always get this error:
"A field or property with the name 'xxx.xxxx' was not found on the selected data source."
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Mar 25, 2011
I have an ASP.NET app with lots of textboxes all over the page that need updating at various points through program execution.
These textboxes actually belong to a certain class, so for easy updating I thought I could create a Dictionary(Of string, object) and add the control.ID and the control to it and then for updating do something like this:
(in case of updating textbox.text):
[code]....
However the text property of the textbox does not actually get updated. I'm mainly trying to avoid having to manually do textbox.text = somestring for each one of my textboxes every time I have to update them.
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Nov 30, 2010
I want to set the proper MaxLength on the Textbox in the BoundField
How do I get the DataField from the ContainingField in order to know which field the column binds to (i.e., BoundField).
The Client-Side web form is located at [URL]
Sample snappet reads:
[Code]....
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Feb 7, 2011
I am getting the following error
The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).
on adding the following code
HtmlGenericControl ctrl = new HtmlGenericControl("NOSCRIPT");
ctrl.InnerHtml = string.Format("<meta http-equiv=REFRESH content=0;URL={0}>", targeturl);
Page.Header.Controls.Add(ctrl);
May be the below script has some problem
<script type="text/javascript" >
function myfunc()
{
var pas,simve,saue,tsh;
pas=document.getElementById('<%=TextBox2.ClientID%>').value;
simve=hex_md5(pas);
saue='<%=Session["saltval"]%>';
var stsh=simve+saue;
tsh=hex_md5(stsh);
document.getElementById('<%=TextBox2.ClientID%>').value=tsh;
}
</script>
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Jan 26, 2010
Im getting error after i rewrite my url,earlier my code was woking fine but as i rewrite my url im getting error.
The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).
In App_code i have used class file consists--
public class FormRewriterControlAdapter : ControlAdapter
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Jan 31, 2011
I have a custom object and a generic collection of this object.When databinding, how can you get a reference to the object's collection similar to how DataRow.Table works? I understand I may need to write code to handle this but I'm not sure where to start.I considered adding a property to my custom object class to store the collection in, but would this generate too much overhead setting this for every object in the collection?
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Apr 13, 2010
I've been pulling my hair out over this one... I've searched on the net and even in the forums, but can't seem to come up with an answer for a simple question.I tried the following code inside my html to get the selected value that comes from our database into the grid and it doesn't work. I am positive that a value exists for the itemType. It is 1. Instead of Checked, I tried SelectedItem and SelectedIndex. Neither of those worked.
<code>
Checked='<%# DataBinder.Eval(Container.DataItem, "itemType")%>'
</code>
I erased the above code from my grid and inside the ItemDataBound event, I placed the following code, but don't know what other code I should place next after it. I know the value inside "itemType" is 1 by debugging it.
<code>
RadioButtonList itmtype = e.Item.FindControl("rblItemType") as RadioButtonList;
</code>
How can I simply find the selecteditem in the list coming back from the database inside the itemdatabound event?
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Mar 28, 2011
public void bindgrid()
{
MembershipUserCollection users= Syste.web.security.Membership.GetAllUsers();
Gridview1.datasource=users;
Gridview1.databind();
}
when I hover over the users using break point I have this userlist->non-public members->Values->[0] bill,[1] ian,[2] jeff-> comment,creation date,email,is approved, is locked out, is online, last activity date, name ...etc I want to bind name,creation date, email to my grid. Is users an object? Why am I not getting any fields if I use Users. ? But i get them as non-public members. How to bind to grid ? I never binded object to grid
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Mar 15, 2010
i have an objectdatasource bound to the System.Web.Security.Roles getAllRoles methods, this method returns an string[] with the names of the roles, then i wanna bind a gridview with this datasource, but it shows me just a one column named length(the length of each role name), how can i instead the length of the string that represent the role name, put the role name?
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May 20, 2010
This is my first attempt at paging on a listview. The first time my page loads it loads the listview fine, but when I try to use the paging I get the following error:
Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index
Here's my code:
[code].....
When I take the following line out I don't get the error, but i need it to populate my controls:
DataKey currentDataKey = this.lvReports.DataKeys[currentItem.DataItemIndex];
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Dec 14, 2010
[code]....
Above is my select query result. "Select Groupname from table". Now i want to add dynamit row in table which display like follows.
[code]....
so that i can display the combobox with default value '-Select-'. I tried combobox.item.insert(0.'"Select") but it gives error.
"Items collection cannot be modified when the DataSource property is set."
so I am trying to add dynamically into table.
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Jun 14, 2010
I'm trying to databind my GridView to a custom datasource where one of it's members/fields is a collection.
Custom object Entry
public List<EntryHour> Hours { get; set; }
In practical terms, one row consists of some normal text fields which is easy to handle. However, the Hours field is the nut to crack.
How do I, in the GridView markup bind my textfields in question to the Hours field (which consists of 7 items allways)?
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Oct 7, 2010
I have a repeater and I'm using collection pager for paging. I can design my collection pager css but can I do like wordpress blogs?
Like: 1-2-3-4-5 ..... 20-21-22
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Feb 17, 2010
I got 2 listboxes in a window form, one on left and one on right. The 1st listbox have some items while the 2nd listbox is empty. Also there are 2 buttons between the 2 listboxes which used to move item from/to the 1st and 2nd listbox.My problem here is that after I bind the data to the 1st listbox (from a dataTable, using DisplayMember and ValueMember) , and I try to move 1 of the item from this 1st listbox to the 2nd listbox and I want that the selected item is also removed from the 1st listbox by:
lbMembers2.Items. Add(lbMembers1. Text);
lbMembers1.Items. Remove(lbMembers 1.Text);
But the selected item is not removed from the 1st listbox.Also on deselect button when i move item from 2nd listbox to 1st listbox,it displays error message "Items collection cannot be modified when the DataSource property is set."
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Jun 9, 2012
I want use meta tag in my page that read keyword from database
I set this code in my product.aspx page
protected void Page_Load(object sender, EventArgs e) {
SqlCommand _cmd = new SqlCommand("select Keyword1 + ',' + Keyword2 + ',' +Keyword3 from House_info where BehCode=1115", _cn);
_cn.Open();
SqlDataReader _dr = _cmd.ExecuteReader();
while (_dr.Read())
[Code] ....
It worked correctly and show my keywords from database and show it in my product.aspx metatag
I have two other page
index.aspx and store.aspx in index.aspx i have 1button and 1 TextBox when user type their BEHCODE(columns name in users table) in TextBox it go to store.aspx page and show that users information on store.aspx
Now i want set meta tag in store.aspx page and i want fill store.aspx meta tag from my users table in data base
This is index.aspx
protected void ImageButton3_Click(object sender, ImageClickEventArgs e) {
string data = Server.UrlEncode(txtNumeric.Text);
SqlCommand _cmd = new SqlCommand("traidname", _cn);
_cmd.CommandType = CommandType.StoredProcedure;
_cmd.Parameters.Add("@BehCode", data);
[Code] ....
Here when i run website this error occur
The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).
In this line
this.Page.Header.Controls.Add(htmlMeta);
I use this code too
<script type="text/javascript">
$("input[id$=btnButton]").live("click", function () {
return confirm("Do you want to submit?");
});
</script>
But it didn't worked this problem just happen here when i used meta tag code in other page it worked correctly . Why this happen?
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Mar 31, 2010
I want to know that how i use the collection class for storing some data and save it letter in the data base.
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Mar 1, 2011
i am trying to do a really simple thing but it won't work...
[Code]....
this is the error i get
Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
i can see different columns in gridview but when hidding gives me error
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Jun 16, 2010
I placed one FormView and one GridView conrtrols on the same page with one linqdatasource that is connected to both controls via their DataSourceID properties. While the GridView works without any problem (on updating) the FormView doesn't update the record.I traced the FormView events and found that in FormView1_ItemUpdating the argument e.NewVaues.Count = 0 as well as e.OldVaues. Count (also zero). Getting items from e.NewValues[index] or [key] causes an obvious exception. However, all the bound contolsn this wa
[Code]....
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Jan 26, 2011
I have gridview like this.
[Code]....
is index was out of range must be non negative and less than the size of the collection
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Jul 1, 2010
I am binding a datalist to some table 0 of a dataset from the database. When I check the number of rows in the dataset table 0 it's coming as 129 but when I check the count of the datalist items(using Datalist_Name.Items.Count) inside the datalist item created event I am getting a maximum count of 128.Due, to this I am unable to assign values to the last label control(last as in the last row) present inside the datalist dynamically. I am not sure where I am going wrong. I even tried to replicate the same code inside the ItemDataBound event but even then I am getting the same error.
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Jan 24, 2012
The code on one of my aspx pages is giving me this error:
I'm getting this on the code behind for export to excel on one of my pages.
The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).It is referring to this line Me.GridView1.Parent.Controls.Add(frm)
I have this code in the aspx page. I am using two gridviews. I need to have this on the page any way I can fix the code so I can use that export to excel you created?
<% If(Session("PendingClaims"))%>then display gridview1<%Else%>
Then display gridview2<% End If %>
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Nov 11, 2010
can we bind any type of System.Collection to DataSource property of a DataGrid ?
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Mar 14, 2010
i am developing a sharepoint webpart. In this webpart i need to use a repeater control. The problem is, i can only use codebehind for creating and using the control. So i have some questions:
1. After creating the repeater control in codebehind, how to create some templates (itemtemplate, footertemplate, etc.) and use it?
2. How to bind a object collection to a repeater control?
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Apr 1, 2011
My Grid is bound to a collection type datasource. When I try to sort the Columns in the Grid I get Javascript error saying sorting event not implemented. Why is the default inbuilt sort functionality not working which worked fine when I directly used a sqlDataSource using smart tag. Do I have to write some code to achieve sorting ?
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