Web Forms :: Can't Find Control (textbox) Inside UserControl

Mar 4, 2011

I can't seem to find a textbox using FindControl. The textbox is located inside an asp:Table, asp:Table is inside a UserControl and I load the usercontrol into the parent page.

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User Controls :: Find TextBox Control Inside UserControl On Page

Jan 15, 2014

I have a user control with a textbox. I am loading it at runtime on parent page with code behind.After click of button on a parent page i need the text of that usercontrol's textbox.

I tried with following code but it does not work for me

myusercontrol us = new myusercontrol();
TextBox textbox = (TextBox)us.FindControl("txtusercontrol");
string str = textbox.Text.ToString();

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Data Controls :: Find And Access TextBox Inside UserControl In GridView Using JQuery

May 7, 2015

I am having textbox UserControl inside gridview. It generates id like


I am not able to calculate running total it gives  NaN

<asp:UpdatePanel ID="GridViewUpdtPanel" runat="server" UpdateMode="Conditional">
<asp:GridView ID="gvDetails" DataKeyNames="Entryid" runat="server" AutoGenerateColumns="false"
ShowFooter="true" OnRowCancelingEdit="gvDetails_RowCancelingEdit" OnRowDeleting="ColInfo_DeleteEntry"
OnRowEditing="gvDetails_RowEditing" OnRowUpdating="gvDetails_RowUpdating" OnRowDataBound="gvDetails_RowDataBound"

[Code] ....

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Web Forms :: How To Find Textbox Control Inside DetailsView Control Using Javascript

Mar 23, 2010

how to find Textbox Control inside DetailsView Control Using Javascript, I tried below but gives an error OBject reference not found


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Web Forms :: Find Captcha And TextBox Control Inside CreateUserWizardStep

Jul 23, 2012

I am integrating a Captcha control inside a CreateUserWizard. As I wanted to do a validation for user's input based on the Captcha using an if.. else.. statement. However an error occured when I trying to get the Captcha control from the createuserwizard. Here the is error : The name 'Captcha1' does not exist in the current context.I had tried to get this control as a textbox, image, control but it was not successful. Here is the code :

<asp:CreateUserWizardStep ID="CreateUserWizardStep1" runat="server">
<td class="style4">Answer:</td>
<cc1:CaptchaControl ID="Captcha1" runat="server"


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Jan 24, 2014

On masterPage i have button btnTest, how hide button from masterPage on userControl.ascx


   btnTest.visible = false;

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User Controls :: How To Find GridView Inside UserControl Using JQuery

Apr 13, 2013

Click Me in a UserControl. I downloaded the sample attached there and its working fine but i am trying to create UserControl out of it. No rows are getting loaded on scrolling down. I modified the code to look like this..

var lastProductId = $("#<%=Test1.GridView1.ClientID %> tr:last").children("td:first").html();
//get last table row in order to append the new products
var lastRow = $("#<%=Test1.GridView1.ClientID %> tr:last");

function GetRowsCount() {
//Count no. of rows except header row in the grid.
var rowCount = $('#<%=Test1.GridView1.ClientID %> tr').length - 1;
return rowCount;

Its giving me error: The name 'Test1' does not exist in the current context. Test1 is the Id of my USerControl. Test1 is the ID of UserControl. I found your tutorial on similar issue but i did not use it because i am not using stored procedure and i know nothing about XML. At this point i just want to make the sample attached in that article(one i provided) to work as a UserControl.

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Forms Data Controls :: Want To Find Textbox Inside InsertItemTemplate In Listview?

Nov 8, 2010

want to find textbox inside InsertItemTemplate in listview there are two list view want to find textbox in the second listview that is inside listview i used that code but told me that there is error.

Dim lv As ListView =
DirectCast(Me.FindControl("lv"), ListView)Dim
lv2 As ListView =
DirectCast(lv.Items(lv.SelectedIndex).FindControl("lv2"), ListView)Dim
txt As TextBox =
CType(lv2.Items(lv2.SelectedIndex).FindControl("txtCode"), TextBox)'
If txt Is
Nothing Then
txt.Text = dr.AssetCode

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User Controls :: Validate TextBox Inside UserControl Using JavaScript?

Apr 10, 2013

I am using a usercontrol which has two textboxes named txtUserName,txtPassword and a button  named btnSubmit.I am using this usercontrol in my webpage.I want to show alert message in the webpage if the user didnot enter the username or password .  

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Find Control In Usercontrol From Page

Sep 2, 2010

I am loading a control to a page dynamically with LoadControl("src to file"). In the usercontrol i have a validator and some other controls that i would like to access from my page. I canät get it to work, null pointer exception. Scenario is like this. I have a Edit.aspx page which loads the EditTemplate.ascx usercontroll. I would like to get information or find the controls in the EditTemplate from the Edit.aspx site. I have tried exposing the controls and validators as properties but how do i access them from my Edit.aspx?

Example code:
Edit.aspx, the control is later added into a
Control control = LoadControl("src to ascx");
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="CompanyImageFile" ErrorMessage="RequiredFieldValidator"></asp:RequiredFieldValidator>
public partial class EditTemplate : System.Web.UI.UserControl, IEditTemplate {
public RequiredFieldValidator Validator {
get { return this.RequiredFieldValidator1; }
set { this.RequiredFieldValidator1 = value; }

From the Edit.aspx site i would like to check the validators isValid property. Isvalid is set in a Save method. The save button that saves the template is located in edit.aspx, so the post in done from that page. So the question is how to get a hold of the property from the usercontrol in the edit.aspx page, where and how should this be done?

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Forms Data Controls :: Find Sum Of The Values Entered In Textbox Inside The Gridview?

Dec 22, 2010

I have the requirement to display the total of values entered in the textboxes inside the gridview.

for ex:

<asp:TemplateField ItemStyle-Width="20%">
<asp:TextBox ID="txtTotalPetitions" runat="server" onkeypress="if(event.keyCode!=9) return OnlyNumbers(event)"></asp:TextBox>

i need the sum of values entered in txtTotalPetitions(It is editable,not from the db)

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Have A Dropdownlist In Inside A Formview And Jquery Cant Find The Control Im Guessing Because Its Inside A Form?

Jun 14, 2010

Hello all i have this little issue getting this to work, i have a dropdownlist in asp.net inside a formview and jquery cant find the control im guessing because its inside a form, this is what i got and it works on another page without a formviewi get this errorName 'Country' is not declared


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Dec 1, 2010

I'm trying to find a TextBox in the code-behind page, it's inside a nested master page and also then inside another control container (it's inside ctrlCheckoutShippingAddress also) .

I've tried this:



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Web Forms :: How To Find Control Inside User Control From Page

Nov 10, 2010

I have on dropdown that show hide user control. In the user control i have Ok and Cancel button.

When the dropdown change i want to apply ValidationGroup on the Ok button that is inside UserControl.

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Web Forms :: How To Find Control For A GridView Inside Panel Control

Apr 23, 2010

I am developing a asp database that is linked with SQL Database. When I am tryind to Find Control (GridView2) inside of another control (Panel2) that sits in Item Template for DetailsView, I got an error message:

Object reference not set to an instance of an object.
<asp:DetailsView ID="DetailsView1" HeaderText="Details" HeaderStyle-CssClass="labelheadRight" runat="server" AutoGenerateRows="False" DataKeyNames="pk_BackupDriveSerial"
DataSourceID="SqlDataSource1" GridLines="None"
CssClass="Detailsview" AllowPaging="True"
<asp:BoundField DataField="pk_BackupDriveSerial" ControlStyle-CssClass="dropdownsize"
HeaderText="Serial No" ReadOnly="True"
SortExpression="pk_BackupDriveSerial" >
<ControlStyle CssClass="dropdownsize"></ControlStyle>
<asp:BoundField DataField="BackupDriveMake" HeaderText="Make" ControlStyle-CssClass="dropdownsize"
SortExpression="BackupDriveMake" >
<ControlStyle CssClass="dropdownsize"></ControlStyle>
<asp:BoundField DataField="BackupDriveModel" HeaderText="Model" ControlStyle-CssClass="dropdownsize"
SortExpression="BackupDriveModel" >
<ControlStyle CssClass="dropdownsize"></ControlStyle>
<asp:TemplateField HeaderText="Type" SortExpression="fkid_BackupDriveTypes" ControlStyle-CssClass="dropdownsize"
<asp:Label ID="Label6" runat="server" Text='<%# Bind("BackupDriveMake") %>' Width="145px"></asp:Label>
<br />
<asp:TextBox CssClass="dropdownsize" AutoPostBack="true" ID="DropDownList5" runat="server" Text='<%# Bind("BackupDriveModel") %>' ></asp:TextBox>
<br />
<asp:Panel ID="Panel2" runat="server" CssClass="dropdownpanel" >
<asp:GridView CssClass="dropdowngrid" ID="GridView2" runat="server" AutoGenerateColumns="False"
CellPadding="4" DataKeyNames="pkid_BackupDriveTypes" SelectedValue='<%# Bind("fkid_BackupDriveTypes") %>'
DataSourceID="SqlDataSource3" ForeColor="#333333" GridLines="None" OnSelectedIndexChanged="GridView2_OnChange">
<RowStyle BackColor="#EFF3FB" />
<asp:BoundField DataField="pkid_BackupDriveTypes"
HeaderText="pkid_BackupDriveTypes" InsertVisible="False" ReadOnly="True"
SortExpression="pkid_BackupDriveTypes" Visible="False" />
<asp:BoundField DataField="BackupDriveMake" HeaderText="Make"
SortExpression="Make" />
<asp:BoundField DataField="BackupDriveModel" HeaderText="Model"
SortExpression="Model" />
<asp:CommandField ShowSelectButton="True" />
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<EditRowStyle BackColor="#2461BF" />
<AlternatingRowStyle BackColor="White" />
<asp:DropDownExtender ID="DropDownExtender2" runat="server" DropDownControlID="Panel2" TargetControlID="DropDownList5">


I also tried


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Find Textbox Inside Formview?

Jul 14, 2010

I am trying to access the value of text box inside formview control but getting "object reference not set" error on line:

varCompanyAddress.Text = userProfile.BusinessAddress

Below is my code:


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Validating Control Inside UserControl?

Nov 5, 2010

I have a wrapper UserControl control around a DropDownList for managing language specific translation on the DropDownList values.

I also have a required field validator that is requried for the inner dropdownlist.

How can I expose this control via the usercontrol to allow validation?

The error I am currently getting is as follows:


Which is now working if I check the IsValid property of the page on postback.

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Web Forms :: Can't Find FileUpload Control Inside ListView

Jan 25, 2011

I have a Listview that houses a FileUpload control. However, after using findcontrol the next line of code tries to convert the filename into a string and produces the familar error object reference not found.

Note: I have used identical code in a formview and it works fine.

Here's my relevent codebehind:

protected void AccessDataSource1_Inserting(object sender, SqlDataSourceCommandEventArgs e)
FileUpload FileUpload1 = (FileUpload)ListView1.FindControl("FileUpload1");
string Fupload = FileUpload1.FileName.ToString();
DateTime DateNow = DateTime.Now;
string DateNowSTR = DateNow.ToString();
string NewImageName = DateNowSTR + Fupload;
FileUpload1.SaveAs(Server.MapPath("~//images//" + NewImageName));
e.Command.Parameters["SponLogo"].Value = NewImageName;

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Web Forms :: Find Controls Inside Custom Control?

Jul 8, 2010

I have a master page and content page and placeholders in one of the placeholders in the content page i programmatically add a custom control (with loads of controls inside it.) Basically once all te controls are populated i want click a submit buttom on the form and get all the vales from the controls in the cutom control.

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Forms Data Controls :: How To Find Control Inside Datalist

Sep 20, 2010

I want to find control inside datalist, i am using this:


//here got error:

Index was out of range. Must be non-negative and less than the size of the collection.

here is my aspx code:

<asp:DataList ID="DataList1" runat="server" DataKeyField="nsid">

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Web Forms :: Could Not Find Control Inside LoginView LoggedIn Template

Aug 3, 2012

I tried to get the LoginName control inside LoginView LoggedIn template , despite several methods, the code still could not work.

I wished to change the default username to the customer name.

Here is the code:

<asp:LoginView ID="LoginView1" runat="server">
Hello, <asp:LoginName ID="LoginName1" runat="server"></asp:LoginName>
<br />
<div style="text-align: right; margin-right: 5px ">
<asp:LoginStatus ID="LoginStatus1" runat="server" LogoutPageUrl="~/Home.aspx" Font-Underline="True" />
At the code behind :

protected void Login1_LoggedIn(object sender, EventArgs e) {
LoginName loginName = LoginView1.FindControl("LoginName1") as LoginName;
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C# - How To Access A Web Control Inside A UserControl From Aspx Page

Jun 16, 2010

i have 2 textbox controls inside a usercontrol TextBoxUC.ascx i have a page.aspx that contains the usercontrol. how can i get a reference to each textbox using javascript from page.aspx?

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Jan 7, 2014

i have a gridview in which textbox in the edit item template but i find this control in the textbox changed events

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Feb 8, 2010

Iam finding the button control which is inside the Footer Template of Data list control.

i tried the below code but it is not working suggest me where iam doing wrong or how i find the control avaiable in footer template of Data list.

Here is my code


iam using the above code on button click

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May 13, 2010

I have some controls that are inside a ListView The ListView is inside a View1 The View1 is inside a MultiView1 (You could make a song out of it) How do I find e.g. a Label control inside the ListView. This line of code worked fine until I threw the ListView inside the MultiView

((Label)CartvListView.FindControl("lblSubTotal")).Text = ....

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