GridView - How To Access Value Of A Control Set In <EditItemTemplate>
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.
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Similar Messages:
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 %>" />
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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]....
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Aug 17, 2010
I have a "simple" gridview that has some columns, and the ability for editing/deleting. I recently found that I can change the editing textbox to a dropdownlist and have follow that, using:
[Code]....
It's quite simple and instead of using an sqldatasource, I have successfully implemented using the sqlclient in the codebehind to bind data only when I want (since this GridView is for "reports" and is queried by many parameters from user inputs).From what I've found online, the only way people have populated the dropdownlist is by using an sqldatasource - is there any way to populate it using the codebehind sqlclient like I have for binding the gridview and other dropdowns on the page that are exactly the same actually. I'd obviously have to set the SelectedValue to be what the value is coming from the database, which I can't see being that difficult.
The tough part seems to be knowing when to access this "MoneyTypeEdit" dropdownlist. I thought it would be in the RowEditing event, so I tried something like:
[Code]....
And I know everything outside of the "inserted code" works, because it was fine before I added that, but the dropdown obviously didn't have any values. And I know the code inside the "inserted code" works because I use it somewhere else on my page to populate a similar dropdown. But I get the error that MoneyTypeEdit is null, and I'm guessing it's because it can't find the "MoneyTypeEdit" dropdownlist.
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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?
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May 9, 2010
I have a formview on my aspx page containing various controls arranged using table. There is a DDL "cboClients" which i need to enable or disabled depending upon role within Edit mode.
The problem here is that i am not able to get that control using FindControl() method.
I have tried following code -
DropDownList ddl = null;
if (FormView1.Row != null)
{
ddl = (DropDownList)FormView1.Row.FindControl("cboClients");
ddl.Enabled=false;
}
Even I ave used the DataBound event of the same control -
protected void cboClients_DataBound(object sender, EventArgs e)
{
if (FormView1.CurrentMode == FormViewMode.Edit)
{
if ((Session["RoleName"].ToString().Equals("Clients")) || (Session["RoleName"].ToString().Equals("Suppliers")))
{
DropDownList ddl = (DropDownList)sender;
ddl.Enabled = false;
}
}
}
But this databound event occurs only once, but not when formview mode is changed.
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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]....
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Aug 11, 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]....
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Jan 21, 2011
I have a template field within a GridView to display a checkbox in edit view and some custom text in normal view.
The results of the query to populate the grid are coming back in a DataSet.
In the edit view I can't get the checkbox to accept the column that is retuning from the DataSet (which is in T/F format) as it says its not the correct type. Even if I return "true" or 1 in the column it still dosn't work.
I take it I need to convert but can't get the syntax correct in this context
<EditItemTemplate>
<asp:CheckBox ID="cbPostToFarm" runat="server" Checked='<% Bind("BOOL_COL")' />
</EditItemTemplate>
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Jan 5, 2010
I have a GridView with an EditItemTemplate, to which I am binding a Dictionary
<asp:GridView runat="server" ID="VariableList" ShowHeader="false" AutoGenerateColumns="false" OnRowEditing="VariableList_RowEditing">
<Columns>
<asp:BoundField ReadOnly="true" DataField="Key" />
<asp:TemplateField ItemStyle-Width="300">
[Code].....
If I set a breakpoint on the grid.EditIndex = e.NewEditIndex; line, it is setting the value to 0 which is the first item which is correct.
However, the asp:TextBox is not displaying. It is showing what is in the ItemTemplate and not in the EditItemTemplate.
However, if I click on Edit button again, it then displays the TextBox.
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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?
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Jan 30, 2010
I am using eWorld.UI.CalendarPopup in my GridView.EditItemTemplate. My GridView is nested by UpdatePanel. At GridView_ItemCreated, I auto add initial row at GridView Footer. I faced problem that, CalendarPopup is working when I add 1st row. Once I click "Add" link and GridView refreshed by AJAX, CalendarPopup no longer working. I can't click or even change its date value. I have tried to download latest 2.0.9, include eWorld.UI.Compatibility assembly; changed controls to point use "ewc" instead of "ew". and few other ways found from Google. However, still no luck.
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Jul 17, 2013
I have a Gridview that works and in one of the TemplateFeld EditItemField I have a checkboxlist that I dynamically create based on the row ID. My first and third row work as expected, when I click on the 'Edit' link the Job Posting column shows up with checkboxlist. The second row does not do this.
I think it's something with gvRecruiters_RowDataBound but I can't see it.
default.aspx
HTML Code:
<asp:GridView ID="gvRecruiters" runat="server" AutoGenerateColumns="false"
OnPageIndexChanging="gvRecruiters_PageIndexChanging"
OnRowCancelingEdit="gvRecruiters_RowCancelingEdit"
OnRowDataBound="gvRecruiters_RowDataBound"
OnRowDeleting="gvRecruiters_RowDeleting"
[Code] ....
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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] ....
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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.
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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.
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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?
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Feb 16, 2010
i saw this post on[URL] so the problem is .... if there is a datasource in some editeitem template in grid view .... it won't be accessible from out of the edit-item field.....
here's my code...
[Code]....
that i have here is ID-column which contains a linqdatasource taking a where parameter from a dropdownlist and they are both in the same edit-template field.
and i have in another column (CourseTypeID-column ... edit-item template) a dropdownlist ..... now this dropdownlist i want to bind it to the linqdatasource exists in the ID-column (edit-item template)..... is that possible in the designer (or from) not code behind ..... and how ????
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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]....
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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]....
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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?
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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..........
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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.
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Nov 19, 2010
How to Show ItemTemplate iNside EditItemTemplate Of GridView
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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]....
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