Data Controls :: How To Find Control In GridView EditItemTemplate
May 7, 2015
Gridview showing error while trying to edit records
error:
Server Error in '/' Application.
Object reference not set to an instance of an object.An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
Line 134: GridViewRow row = (sender as Button).NamingContainer as GridViewRow;
Line 135: //string Invoice_No = (row.Cells[0].Controls[0] as TextBox).Text;
Line 136: string orderdate = (row.Cells[1].Controls[0] as TextBox).Text;
Line 137: string Posted_By = (row.Cells[2].Controls[0] as TextBox).Text;
Line 138:
[code]....
View 1 Replies
Similar Messages:
Oct 21, 2012
I have a dropdown list within a listview 'EditItemTemplate' and 'InsertItemTemplate" which I am trying to populate from the database with code behind with ItetmDataBound event. Problem is I am getting NullException when I use this code which works fine for ItemTemplate.
<asp:DropDownList ID="ddlItemtList" runat="server">
<asp:ListItem Selected="True" Text="--Select Item--" Value="0" />
</asp:DropDownList>
[Code]....
I get the "Nothing" as output whever I press edit. How do I access the DropDownList withint he Listview?
View 1 Replies
Sep 6, 2013
I have requirement to bind ASP.Net DropDownList control in EditItemTemplate of GridView.
I preferred the tutorial:
[URL]...
i have followed same steps just but difference is i have a edit imagebutton with commandname="Edit".Also dropdown needs to be binded from different table(directory) and not the table through whicch grid is binded(details).
if (e.Row.RowType == DataControlRowType.DataRow && (e.Row.RowState & DataControlRowState.Edit) == DataControlRowState.Edit && GridView1.EditIndex == e.Row.RowIndex)
{
DropDownList DStatusEdit = (DropDownList)e.Row.FindControl("DStatusEdit");
string query = "select distinct status from directory";
SqlCommand cmd = new SqlCommand(query);
DStatusEdit.DataSource = GetData(cmd);
[CODE]..
the page is running but when i click edit image button the dropdwn shows but no data in dropdown binded it is empty.
My gridview is inside update panel.
How can i achieve this?
Should dropdownlist in my case be binded inside rowcommand and how?
View 1 Replies
Mar 24, 2011
I have a gridview and it has two EditItemTemplates. I want to update the items inside the second dropdown (EditItemTemplate) when I select an item from the first dropdownlistbox (EditItemTemplate). I want to update dropdownlist2 when I select an item from dropdownlist1. How can I do this?
[Code]....
View 2 Replies
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]....
View 6 Replies
Sep 30, 2012
web in asp.net+vb code+sql database
i hvae a database named anil and TABLE NAMED COURSE_IN fields are (gridview with regnumber,name,dtjoin, qual, OY, OTY,VDA) and another table course with (OY, OTY,VDA) fiedls. my grid view displays adata from databse with edit facility.
one dropdownlist out side grid selected value is displayed in gridview
DROPDOWNLIST OUTSIDE THE GRID
<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True"
DataSourceID="SqlDataSource1" DataTextField="ENTRY_COURSE"
DataValueField="ENTRY_COURSE">
</asp:DropDownList>
GRIDVIEW
<asp:GridView ID="GridView1" runat="server" AllowSorting="True"
AutoGenerateColumns="False" CellPadding="4" DataMember="DefaultView"
DataSourceID="SqlDataSource2" ForeColor="#333333" GridLines="None"
style="font-family: Arial; font-size: small">
<FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
<RowStyle BackColor="#FFFBD6" ForeColor="#333333" />
[Code] ....
View 1 Replies
Apr 13, 2010
I create dynamicaly a gridview and with to also create the EditItemTemplate dynamically.
This is how I add dynamically columns to my gridview.
[Code]....
View 4 Replies
Dec 2, 2010
i have a gridview and i have made table in gridview and in table i have bound some controlsbut i am unable to find control. if i am not using table in gridview then i am not facing the problem but when i am using table in gridview then i am facing this problem please send me a solution of this problem.
View 4 Replies
Mar 15, 2010
I have a gridview and each row have an textbox for quantity, I need quantity.text to add product in database, but in my page I have 2 or more quantity textbox. How do I know which one is the good one...to add.
[Code]....
View 5 Replies
Aug 8, 2010
I am having asp.net web page.In that I am having GridView control. In that GridView I have template columns.There are total 8 columns in gridview.First column of the gridview is a checkbox. and in other columns of the gridview there are dropdownlists.what i want is that when i select a value in first column's dropdown and then check the checkbox then for all columns for that particluar row all the dropdowns in all columns for that selected row should contain the value of the first selected dropdownlist.
View 5 Replies
Jan 27, 2010
How to write code in vb.net to control the Dropdown which is inside FormView EditItemTemplate. FormView named "frmFaultsReg" DetailsView named "lstStatus" Actually what i want to do that there is a textbox inside FormView EditItemTemplate and ItemTemplate to insert Closing date. lstStatus has a value PENDING and CLOSED. If a user select CLOSED from lstStatus then the date textbox named "ClrDateTimeTextBox" should show current date time and to insert into database and if user again selects PENDING from lstStatus then the date textbox should show empty. I think the postback of lstStatus should work but lstStatus is inside the FormView thats why I am unable to hook it.
View 7 Replies
Aug 16, 2010
Using Visual Web Developer Express 2010 with ASP.NET 4.0.
I have a FormView and I want to set a default value from the database. I can't get it to bind to the value in the database. My FormView looks like this:
[Code]....
The EditItemTemplate does not even load when I click the edit button on my FormView control, but I don't get an error message either.
View 1 Replies
Feb 24, 2011
I have DataList control and I want to assign to it's edititemtemplate some User Control. The problem is I can't find when I should databound UserControl to data, as my UserControl doesn't have static look (it renders different depending on some property values and datasource).
I was try to simply set my user control in edititemtemplate
<EditItemTemplate>
<uc:MyUserControl id="myUserControl1" runat="server" />
</EditItemTemplate>
and then bind it to data in ItemDataBound event handler, but it remains empty
if(e.Item.ItemType == ListItemType.EditItem)
{
var p = (Pair)DataBinder.GetPropertyValue(e.Item.DataItem, "Key");
((AnnouncementUserControl) e.Item.FindControl("userControl1")).RepeaterDataSource =
_templateWorker.ReturnTemplateByAnnouncementId(Convert.ToInt32(p.First), true);
}
how can I databound my control, or another approach which will make me avoid this problem?
View 2 Replies
Mar 28, 2011
I have a dropdownlist embedded into an asp.net gridview. I have successfully populated the dropdown list in the footer but have not been able to populate the dropdownlist in the EditItemTemplate. Here is my code that works. I need to do the exact same thing for a dropdownlist embedded in the update functionality of the gridview.
[Code]....
View 2 Replies
Feb 25, 2010
I have GridView with template column binded to some field. In edit mode I would like to set default value to this field when it is not initialized (this is time value and I would like to set it to default 8:00 - this prevent user from entering this value) - how to do this?
View 4 Replies
Apr 10, 2010
When i Updating my gridview and i modify the value of dropdown the update is all ok, but if i not modify the dropdown and leave the selected value after the update i see another value, the first of listitem of my dropdown.
This is my code:
Sub GrdUpdate(ByVal sendere As Object, ByVal e As GridViewUpdateEventArgs)
Dim ID_ricette, NomeRicetta As String
Dim NomePortata As DropDownList
Dim NomePortataSel As String
If Not e.NewValues(0) Is Nothing Then
ID_ricette = e.NewValues(0).ToString
NomeRicetta = e.NewValues(1).ToString..........
View 5 Replies
Nov 22, 2015
I have a textbox inside edit template and it is binded with the data. Somehow, textbox data starts from the middle instead at the beginning of the box. I can use textarea where it starts from the starting point but I cant bind the data inside the gridview.
View 1 Replies
Feb 24, 2010
In my Gridview when a user edits a row, I'm showing couple of asp:TextBox boxes using the EditItemTemplate.
One of the Text Box is bound to the UpdateParameters of my asp:ObjectDataSource. However the Second Box is not bound to any of the update parameters. I'm assigning a custom value to the second box.
Now my problem is, when the row is updated how do i read the value of my second text box??
I tried catching the value of the second text box in Grid_RowUpdating and ObjectDataSource1_Updating but I'm unable to find the second control.
View 1 Replies
Mar 22, 2011
under rowupdating event i want code to find control of my textbox with name 'txtdesc'.
i am using vb.net
what do i write inside ehre?
Protected Sub gv_RowUpdating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewUpdateEventArgs) Handles gv.RowUpdating
End Sub
View 8 Replies
Feb 1, 2011
i tried something like this but did not work:
GridViewRow row = (GridViewRow)(((Repeater)e.CommandSource).NamingContainer);
Repeater _rpt1 = row.Cells[8].FindControl("rptReg") as Repeater;
error:
Unable to cast object of type 'System.Web.UI.WebControls.Button' to type 'System.Web.UI.WebControls.Repeater'.
is there a way i can have the below code in `OnRowCommand` event using GridView?
actually i am trying to delete the row from the gridview control and when the user click on it and i am grabbing the mulitple ids and passing to SP and update the table and `databind the gridview`
GridViewRow row = gv.SelectedRow;
Repeater _rpt = gv.Rows[e.RowIndex].Cells[8].FindControl("rptReg") as Repeater;
Repeater _rpt1 = gv.Rows[e.RowIndex].Cells[9].FindControl("rptVisitor") as Repeater;
foreach (RepeaterItem item in _rpt.Items)
{
TextBox _txt = item.FindControl("txtId") as TextBox;
TextBox _txt1 = item.FindControl("txtName") as TextBox;
//update db
}
View 2 Replies
Oct 12, 2012
I have the following simple GridView control on my web page:
<asp:GridView ID="gvInvoices" runat="server"
AutoGenerateColumns="False"
PageSize="12"> <Columns>
<asp:TemplateField HeaderText="Invoice">
[Code] ....
I want to know which button a user clicked. I want to get the invoice number which is the text for the button control. But how do I know which row the user clicked?
View 1 Replies
Nov 19, 2010
How to Show ItemTemplate iNside EditItemTemplate Of GridView
View 2 Replies
Mar 2, 2011
I have two embedded dropdown lists in Gridview control. One gives you business channel options and the other represents products depending on the business channel selected.I am trying to use different data sources for product dropdown list depeding on what the user selected from the business channel drop down list. How could I do this. Here is my current code:
[Code]....
View 2 Replies
Feb 26, 2010
I have a gridview and I do Add, Modify and Delete operations. I am comfortable adding and modifying any text or date value. Now, I have a dropdown list to be displayed. I need to add and modify. The contents in the dropdownlist is fixed. Below is the code. I know there is a problem in my
<EditItemTemplate>
<asp:TemplateField
HeaderText="Leave Type">
<EditItemTemplate>
<asp:DropDownList
[Code]....
What is that I need to have code for EditItemTemplate
View 1 Replies
Feb 15, 2010
I have a GridView control on a page with a Panel that has a DefaultButton. I am trying to get the "Update" button to work with the Enter key when a user edits a row. It works fine with the mouse. When I click on "Update", the row reverts back to View mode and the updated value is shown.
When the GridView is in the Panel, the Panel's default button (which submits the page) fires when I press Enter, before the RowCommand is even handled, and the update is lost.
When the GridView is not in the Panel, some other seemingly random button in the Panel fires, but not the "Update" button in my row's EditItemTemplate. Specifically, there is a CalendarExtender on the page, and the extender's popup button fires. Totally not what I want.
How can I get this to behave correctly?
Here is the structure of my mark-up code:
<asp:Panel ID="Panel1" runat="server" DefaultButton="btnSubmit">
<!--Form with controls-->
<asp:ImageButton ID="btnWSPODateCal" runat="server" />
<!--this button fires when I press enter while editing a grid row:-->
<ajaxToolkit:CalendarExtender ID="CalendarExtender1" runat="server"
TargetControlID="tbPODate" PopupButtonID="btnWSPODateCal" />
<!--more controls-->
<div class="button_row">
<asp:ImageButton ID="btnCancel" runat="server" />
<asp:ImageButton ID="btnSubmit" OnClick="btnSubmit_Click" />
</div>
</asp:Panel>
<asp:GridView runat="server">
<Columns>
<asp:TemplateField>
<EditItemTemplate>
<asp:ImageButton CommandName="MyUpdate"
ID="btnSubmitRow" runat="server"
CommandArgument="<%# ((GridViewRow) Container).DataItemIndex %>" />
View 2 Replies
