Forms Data Controls :: Cannot Find Control In Template After Page Change

Dec 1, 2010

I am using FindControl to get a hyperlink but it only works on the first page. It works fine until I click on another page number in the pager. Then the hyperlink is nothing. This is the hyperlink.

<asp:TemplateField HeaderText="Proj Id">

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In the Gridview RowDataBound event, I am trying to find the control LinkB_Addnew located in the footer of my Grdiview:

[Code]....

But I get the error --> Object reference not set to an instance of an object so It is like not found to me...

[Code]....

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[Code]....

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Jan 12, 2010

Here two have two grid inner and outergrid, When i am click the Edit Linkbuttom i am able to see the EditItemplate of innergrid.. where i can edit the Value.. When going to update that values in Data base.. i am not able to fine the control . Here is the code

<
asp:GridView
ID="GrdMeetings"
runat="server"
AutoGenerateColumns="False"
Width="100%"
OnRowDataBound="GrdMeetings_RowDataBound"
GridLines="Horizontal">
<Columns>
<asp:TemplateField>
<HeaderTemplate>
<table
width="100%"
cellpadding="0"
cellspacing="0"
style="background-color:
#5a5a5a;color:
White">
<tr>
<td
style="width:
15%;"
align="center"
colspan="3">
Meeting Details
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</tr>
</table>
</HeaderTemplate>
<ItemTemplate>
<table>
<tr>
<td>
<asp:Label
ID="txtyear"
runat="server"
Width="60px"
Text='<%# Container.DataItem %>'
/>
</td>
</tr>
<tr>
<asp:GridView
ID="MeetingDates"
runat="server"
AutoGenerateColumns="false"
Width="100%"
GridLines="Horizontal"
AutogenereateEditColumns="True"
ShowHeader="false"
CommandName="Meetingid"
OnRowEditing="MeetingDates_RowEditing"
OnRowUpdating="MeetingDates_RowUpdating">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<table
cellpadding="0"
cellspacing="0">
<tr>
<td>
<asp:LinkButton
ID="btnSave"
runat="server"
Text="Edit"
CommandName="Edit"
/>
<asp:Label
Visible="false"
ID="Label1"
runat="server"
Width="60px"
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</td>
<td
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<asp:Label
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runat="server"
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<ItemStyle
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/>
<EditItemTemplate>
<table
cellpadding="0"
cellspacing="0"
style="height:
50px;
margin-left:
50px;
text-align:
right">
<tr>
<td>
<asp:Label
Visible="false"
ID="Label2"
runat="server"
Width="60px"
Text='<%# Bind("Meetingid") %>'
/>
</td>
<td
colspan="0">
<b>
Edit For :</b>
<b>
<asp:Label
ID="TextBox1"
runat="server"
Width="150px"
Text='<%# Bind("Meetingdate") %>'
/></b>
</td>
</tr>
<tr>
<td>
<asp:Label
Visible="false"
ID="lblmeetingID"
runat="server"
Width="60px"
Text='<%# Bind("Meetingid") %>'
/>
</td>
<td
colspan="0">
<asp:TextBox
ID="txtMeetingDate"
onkeypress="dateValidation(this);"
runat="server"
Text='<%# Bind("Meetingdate") %>'
OnTextChanged="txtMeetingDate_TextChanged"></asp:TextBox>
<ajaxToolkit:CalendarExtender
ID="calEx"
Format="MM/dd/yyyy"
runat="server"
TargetControlID="txtMeetingDate">
</ajaxToolkit:CalendarExtender>
</td>
</tr>
</table>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<table
style="margin-left:
-0px">
<tr>
<td>
<asp:LinkButton
ID="btnUpdate"
runat="server"
Font-Bold="true"
CommandName="Update"
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Text="Save">
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</td>
<td>
<asp:LinkButton
ID="btnDelete"
runat="server"
Font-Bold="true"
CommandName="Delete"
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</td>
<td>
<asp:LinkButton
ID="btnCancel"
runat="server"
Font-Bold="true"
CommandName="Cancel"
Text="Cancel"
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</td>
</tr>
</table>
</ItemTemplate>
<ItemStyle
HorizontalAlign="Left"
VerticalAlign="Bottom"
Width="60%"
/>
</asp:TemplateField>
</Columns>
</asp:GridView>
</tr>
</table>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<AlternatingRowStyle
BackColor="#99CCFF"
/>
</asp:GridView>

and the Events that are

[Code]....

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Forms Data Controls :: How To Change Template Control Properties In Code

Feb 5, 2010

How could I change (programmatically) a couple of properties in a grdiview template ? For instance, the CalendarExtender6.enabled and the textbox, Duetext.readonly.

[Code].....

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Forms Data Controls :: Detailsview Template Column Control Change

Dec 13, 2010

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I can't seem to reference a control properly, so that I could then change its properties. I have 3 fckeditor controls specified in edittemplate fields, but i only want to diplay them all if the querystring equals 1. so i created in aspx.cs file: {

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Jun 14, 2012

<asp:Content ID="Content3" runat="server" contentplaceholderid="ContentPlaceHolder3">
<asp:LoginView ID="LoginView1" runat="server">
<AnonymousTemplate>
<asp:Login ID="Login1" runat="server" BackColor="#FFFBD6" BorderColor="#FFDFAD"
BorderPadding="4" BorderStyle="Solid" BorderWidth="1px" Font-Names="Verdana"
Font-Size="0.8em" ForeColor="#333333" onauthenticate="Login1_Authenticate1"

[code].....

i have used an login control for the users who have not logged in and defined login verification method on the click event of the button but while excuting i do get an error

Error    1    The name 'Login1' does not exist in the current context   

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Jul 27, 2010

I have one page that I always want the anonymous template to be displayed regardless of whether or not the user is logged in.

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Forms Data Controls :: Find And Set DetailsView Controls In Empty Data Template In Gridview

Oct 31, 2010

I would like to find controls in the detailsview control placed in the EmptyData Template of the gridview. I am trying to create Insert new record for the gridview control.

1. If there are existing records in the table - works fine and sets my two values: I placed Detailsview and Insert Button in the footer of the gridview. I needed to set the values of two fields. When I click on the Insert button it saves new record and sets the field with the value (code attached - works fine). I also have a popup extender that opens detailsview - this works just fine.

2, If ther are not records in the table - saves record but cannot find and set controls on the detailsview Same thing setup in the EmptyData Template. The record is saved but I cannot Find and set the field value on the control.

1. Link button (on click) in the gridview footer (works fine)

protected void LinkButton1_Click1(object sender, EventArgs e)
{
string zupa1;
zupa1 = ddlSelectEmployee.SelectedValue;
try
{
DetailsView zupa = (DetailsView)gvTraining4.FooterRow.FindControl("DetailsView1"); TextBox zupa2 = (TextBox) zupa.FindControl("txtInsertEmployee");
zupa2.Text = zupa1;
}
catch
{
}
DetailsView dettraining = (DetailsView)gvTraining4.FooterRow.FindControl("DetailsView1");
TextBox training = (TextBox) dettraining.FindControl("txtTrainingType");
training.Text = "4";
}

2. EmptyDataTemplate.FindControl - can save record but cannot access txtInsertEmployee and txtTrainingType

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zupa2 = (TextBox)zupa.FindControl("txtInsertEmployee");TextBox
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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">
<LoggedInTemplate>
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" />
</div></div>
</LoggedInTemplate>
</asp:LoginView>
 
At the code behind :

protected void Login1_LoggedIn(object sender, EventArgs e) {
LoginName loginName = LoginView1.FindControl("LoginName1") as LoginName;
Response.Write(loginName.ToString()); //for now I used Response.Write for testing purposes
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Forms Data Controls :: Change The Image Of A Template Column?

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I need to change the image in my hyperlink template column (2) for each row, based on a column 3 text value.So if column 3 has a text of 0 the hyperlink image of template column 2 should be noedit16.png for that row else it should be edit16.png.Here is what I have:

<asp:TemplateField>
<ItemStyle Wrap="False" />
<ItemTemplate>

[code]...

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I have 3 buttons that change the Information being displayed in my Gridview (Previous, Today, Forward). Now management wants to SUM the Date's information by column, I have figured out how to do this by changing the BoundField to a TemplateField and then add a FooterTemplate with a SQL DataSource. When I Press either the Previous or Forward button the data does not change in my Sum'd Footer column.

[Code]....

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Oct 21, 2015

How to access database values in footer template of repeater control in ASP.Net,C#. My Code is given below:

<asp:Repeater ID="rptrMaintenance" runat="server" OnItemDataBound="rptrMaintenance_DataBinding" >
<HeaderTemplate>
<table width="100%" cellpadding="0" cellspacing="0" valign="top">

[Code]....

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Forms Data Controls :: Find Textbox In GV Without ID, Then Change Height/width?

Apr 3, 2010

I've been working with this tutorial:

[URL]

It's basically how to create an editable gridview.

I've got it up and working, but I need to change the width/height of the textboxes when the gridview is in edit mode.

The problem is, when the textboxes are rendered, they don't have ID's so I can't use FindControl to modify the textboxes.

Adding textboxes in the template items just created an independant - textbox that doesn't do anything.

My question is, how can I find these textboxes & change their height/widths, or how can I find these textboxes & assign ID's to them...so I can modify their height/widths?

Here's a snippet of what I've been playing with....haven't had any luck though...I'm probably way off:

[code]....

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Aug 21, 2010

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I am planning to use grid view control, before was using datagrid, planning on switching to gridview:


<asp:TemplateField HeaderText="Deleted">
<ItemTemplate>
<asp:Image id=ImgDeleted runat="server" Height="13px" Width="21px" ImageUrl='<%# [code]...

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[code].....

now I want when users click on hyperlink according to above table if their behcode=1111 it go to show.aspx(it is anotherpage that I made) else it go to View.aspx page/

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Dim content As ContentPlaceHolder =
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ContentPlaceHolder)

[code]...

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Mar 15, 2010

i have a gridview control i added checkbox contrl dynamically but i am not getiing the reference of checkbox in button clilck event here is my code Gridvew

[Code]....

.vb code

[Code]....

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I am simply trying to change the listView template based on a value in the listview data. I do have this displaying the information correctly. Except when I try to change the item template based on a value in the listview. My code is below ....

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