Forms Data Controls :: Finding A Control From A Control Collection?
Aug 24, 2010
I'm trying to write a bit of code that will format all the numeric values in lables in my gridview. here's what i am doing right now:On the RowDataBound Event, i create a row object for the row that is currently being bound.then i go use the FindControl method to grab each label by name.Problem is there's too many columns in this table and i really dont wnat to have to type it all out. Here's an example of what i am currently doing
[Code]....
Can i use myRow.Controls to grab a list of all the controls and then somehow get a list of all labels in the collection and then use a for loop to go through and format each label?
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Similar Messages:
Jan 26, 2011
i am adding dynamic control (textbox) and i set the property to visible = false but i dont find the control in the tree collection, i want to hide it from user seeing it and read the value.
protected void gv_RowCreated(object sender, GridViewRowEventArgs e)
{
Students org = (namespace.Students )(e.Row.DataItem);
foreach (Registration reg in org.Registrations)
{
int _count = org.Registrations.Count;
for (int rowId = 0; rowId < _count; rowId++)
{
TextBox txtBox = new TextBox();
txtBox.ID = "_registration" + e.Row.RowIndex + "_" + rowId;
txtBox.Text = reg.Name;
txtBox.Visible = true;
e.Row.Cells[7].Controls.Add(txtBox);
}
}
}
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Dec 6, 2010
Finding DropDownList Control Within DataList Control?
[Code]....
[Code]....
<asp:LinkButton ID="AddBtn" runat="server">Add Committee</asp:LinkButton>
</FooterTemplate>
</asp:DataList>
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Feb 26, 2010
I am writing an ASP.NET custom control.In my custom control code, I find a PlaceHolder control in the page like so:this.myPlaceholder = Page.FindControl("placeholder1") as PlaceHolder Then, I render the placeholder as the output of the custom control:
protected override void Render(HtmlTextWriter output)
if (this.myPlaceholder != null)
this.myPlaceholder.RenderControl(output);
However, this causes the placeholder to be rendered in two places - in the custom control output (good) and in the original location in the page (bad).
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Oct 18, 2010
I cannot dig out the controls correctly in my code, as they are hidden in a datalist. I am trying to update some data into a row in the 'resume' table. Is INSERT INTO corrent for updating data which is already there?
and also i cannot find the controls in the datalist correctly....?
protected void LinkButton2_Click(object sender, EventArgs e)
{
string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
System.Data.SqlClient.SqlConnection sqlConnection1 =
new System.Data.SqlClient.SqlConnection(connectionString);
System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand();
cmd.CommandType = System.Data.CommandType.Text;
cmd.CommandText = "INSERT INTO resume (confirmed,comment,reference) VALUES (@confirmed,@comment,@reference) WHERE number = @number";
cmd.Parameters.AddWithValue("@number", DataList1.FindControl("picturesLabel0").Text);
cmd.Parameters.AddWithValue("@confirmed", DataList1.FindControl ("RadioButton1").SelectedValue);
cmd.Parameters.AddWithValue("@comment", DataList1.FindControl ("TextBox3").Text);
cmd.Parameters.AddWithValue("@reference", DataList1.FindControl ("TextBox4").Text);
cmd.Connection = sqlConnection1;
sqlConnection1.Open();
cmd.ExecuteNonQuery();
sqlConnection1.Close();
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Jun 8, 2010
What I'm trying to do is find a control within a nested repeater when the OnItemDataBound event is fired on the 'main' repeater.
[Code]....
This has driven me mental! And I've done stacks of web searches and ended up confusing myself even further.
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Jan 20, 2011
I am trying to find my label control in a repeater and I thought I did this correctly but I came up with an error message:
Compiler Error Message: CS0165: Use of unassigned local variable 'okcEventDate'
Source Error:
[Code]....
Here's my code:
[Code]....
Is it not finding my control? If not, can someone tell me how to find the label control?
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Aug 23, 2010
I am trying to find a child control from a repeater control's child control. I have the following structure like a top control is a repeater, below which is a Panel and below this is a DateControl(custom control).
I want to find the DateControl.
<asp:Repeater runat="server"
ID="rptMembers"
<ItemTemplate>
<asp:Panel ID="pnlAddDependent".....
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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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Dec 16, 2010
I have a gridview where I in codebehind add a templatefield
[Code]....
In my update command when i try to find the "Result" textbox I get a null object
[Code]....
In the gridview there is another templatefield "Name" that consist of two boundfields("Firstname" and "Lastname") This column is added in the design phase and not in the codebehind.I don't have any trouble finding these controls using the ID added in the markup
[Code]....My issue is with the result column that I add in codebehind.
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Feb 16, 2010
I have an object data source control. and to insert the control I add the object to the database then call databing on the gridview the DataSource control is bound to.
My question is - how would I know where the newly added row is? I can'y go by id, because the dbase creates the id.
I'm thinking maybe last data key, but based on the sort that would be accurate.
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Jan 20, 2010
How to find the client id of a cell in GridView that is in edit mode. I need to attach javascript to the cells of the row that is currently being edited.
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Jul 8, 2010
Globally i want to find a textbox which is in a gridview such that i can use that variable in any of the events.
Is that possible in .cs file or if not how can we retreive the variable of a textbox in to a function after finding the textbox using javascript in .aspx page .I tried to find a control in .cs file but I couldn't get it.
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Apr 16, 2013
I' Trying to find the control i Repeater <Headertemplate> and I got this error "Specified argument was out of the range of valid values.
((Label)Repeater Created. Controls[0].FindControl("lblHeader")).Text = "sample";
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Mar 24, 2010
In my application(ASP.NET 3.5) I have a User Control(ascx) that I have on a number of pages. Sometimes I need to reference certain label from the page ascx is on.
When I try this from within ascx,
[Code]....
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Feb 12, 2011
I have an asp.net usercontrol which represents a "popup" dialog. Basically, it's a wrapper for the jQuery UI dialog which can be subclassed to easily make dialogs.
As part of this control, I need to inject a div into the page the control is used on, either at the very top or very bottom of the form so that when the popup is instantiated, it's parent is changed to this div. This allows "nested" popups without the child popup being trapped inside the parent popup. The trouble is, I can't find a safe way to inject this div into the page. A usercontrol doesn't have a preinit event, so I can't do it there, and calling Page.Form.Controls.Add(...) in Init, Load or PreRender causes the standard exception "The control collection cannot be modified during DataBind, Init, Load, PreRender or Unload phases."
I thought I had found a solution by using...
ScriptManager.RegisterClientScriptBlock(Page, Me.GetType, UniqueID + "_Dialog_Div", containerDiv, False)
... which seemed to work well normally, but recently a coworker tried putting an UpdatePanel inside the dialog and now she's getting the error "The script tag registered for type 'ASP.controls_order_viewzips_ascx' and key 'ctl00$ContentBody$OViewZips_Dialog_Div' has invalid characters outside of the script tags: . Only properly formatted script tags can be registered."
How are you supposed to add controls to the pages control collection from inside a user control?
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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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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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Mar 27, 2011
i saw few of solutions for this exception (like putting it in place holder, or replace the <% to <# ...etc) , but i don't get the idea about it, i mean what is the controls collection? and why it can't be modified if the added control contains code blocks?
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Aug 11, 2010
I recently put some code <% %> code blocks in my Master Page. Note I've read of the "fix" for either moving things out of <head> or using <%# %> but neither of them work well for my application.
Now the weird thing is that I only get this error on one page of mine. All the other pages seem to work fine, so what actually causes this error? There is nothing I can think of that is unique about this page. It uses the script manager as does other working pages and there is just nothing extraordinary about this page. It does have quite a few custom controls on it, so hunting down what is different in this page is more difficult than usual.
So what actually causes the Controls collection cannot be modified because the control contains code blocks exception?
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Dec 18, 2012
Error: The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>)
I have the following in my master file to load a dynamic seasonal background image:
HTML Code:
<style type="text/css">
body
{
background-image:url("<%=backgroundImage%>");
background-position: top center;
}
</style>
It works fine on most of my pages, but on one it throws the above error.
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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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May 7, 2015
I have web.confing file when adding tag page for set theme
After running project i have this error:
The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).
<pages theme="Theme" styleSheetTheme="Theme" clientIDMode="AutoID" />
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Apr 27, 2016
I am getting http exception in of the method of class file (search.aspx.vb) like "The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>)",
I have tried placing Java script function in the body of Master page from header, whereas I just removed the Java script tag and its contents in search.aspx (as of its not required now). Still getting exception.
I also know that if we have something like this <%= in Java script function we need to replace with <%#. But I don’t have this kind of code in any function.
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Apr 28, 2010
I'm dynamically loading a user control from a for loop against a objects collection, eg.
[code]....
I want to pass the following collection into the user control: oPerson.Address[i].listHistory (listHistory is a List of objects which I want to manipulate inside the usercontrol)
How can I pass this into the usercontrol so i can do this
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