Forms Data Controls :: Looking For Clean Approach To Building Nested Datalist Or Nested Gridview
Jun 17, 2010
Is there a better, cleaner way to do this in ASP.NET 2.0?
An ASP.NET 2.0 page displays a datalist of records. Each record can have many dates, so the dates are in a nested gridview (I chose a gridview over a datalist here because we want to be able to delete a date and this is easier done in a gridview). The parent record can never be deleted.
The display works fine: the nested gridview gets its datasource during the parent datalist's OnItemDataBound event.
The problem: the nested gridview's delete function. The date gets deleted without a problem (handled in the OnRowDeleting event), but somehow the redisplay is untying all the other nested gridviews from their datasources. The delete does not appear to cause a page postback, so I don't know how the other nested gridviews are losing their datasources.
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Mar 1, 2011
I'm trying to create a nested gridview, but I'm stuck at the editing/deleting part of the nested gridview. (Below is my code).The nested gridviews are filling out nice, I've set the DeleteParameter in the SQLDataSource, but I'm still getting this error when trying to delete a criteria: 'The Gridview 'gvCriteria' fired event RowDeleting which wasn't handled.'I've tried to create a method 'gvCriteria_RowDeleting', but that didn't seem to work out.Someone who can give me a piece of advice? Would it be possible to fill the gridview without using gvDomain_rowDataBound? Dries
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And the C# behind:
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Dec 5, 2013
In Nested Grid, we get a '+' sign. The problem is that '+' sign appears all times, even if there are no child records for that row. 1. Can we enable/disable OR Hide/Unhide '+' sign. depending on if child rows exits.2. OR alteast we can put some bgcolor indicating to user that this record do have child rows. Without any indicator user may feel quite annoying to click on '+' sign and nothing happens.
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Jun 21, 2010
I have two datalists. Data list 1 shows regions; data list 2 is nested in datalist 1 and shows the cities in those regions. The two datalists bind ok.
However, I'm trying to call a click event from the nested data list (2) so that when clicked, the cityID nested in datalist 2 will appear in a label.
Here is a simplified version of the code.
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Jan 24, 2016
I have designed a collapsible nested gridview project using this article as a reference Collapsible Nested GridView with Paging using ASP.Net. I am trying to modify the code to collapse a gridview when another gridview is expanded so that only one nested gridview will be open at a time.
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Feb 11, 2010
I have got DataList1 which contains DataList2And inside DataList2, I have placed control - CheckBox1How do i make CheckBox1 to be identified in CheckedChangedEvent
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Aug 10, 2010
I am trying to find the text property of a label that is nested within a DataList within a FormView. The FormView and the DataList have different datasources.
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Mar 18, 2010
I'm using nested datalists as per my requirement, in my second datalist i need to show data in tab panels. For that i placed ajax tabcontainer in my second datalist <Item Template> tags.when i'm trying to access tabcontainer activeindex changed event on my code behind, i'm getting an error . Below is my code..
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Nov 15, 2010
I have Datalist control in my application which contains one Gridview control as a child control in it. Now at the time of giving datasource to the child control, it gives object reference error.Note:I am binding the child grid at the time of ItemDataBound Event of Datalist controlMy code looks like :
Protected void Datalist1_ItemDataBound(object sender, DataListItemEventArgs e)
{
DataSet dsTest;
[code]...
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Feb 22, 2011
Objective:
Have the MultiView1 display only if Frieght values exceed 15.50. If check box is checked, retreive the row values of the Gridview1 and Gridview2 to perform a task.There will be two check boxes. One will be conditionally hidden. Each check box has a different function.
Example: Send an email notifying this entry has been flagged. I am using Visual Studio 2005 with ASP.NET 2 due to availability of resource. I have checked out numerous sites without finding the specific answer.
For example:
[URL]
The following a simplified representative example of what I am trying to accoumplish. It uses the Northwind.mdb access database with just the Customers and Orders table.
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Mar 26, 2016
i have nested datalist ,i want select all checkbox jquery code when we click on sub header .
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Example3.aspx.cs"
Inherits="Example3" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
[Code]...
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Feb 5, 2010
I have a gridview (gvNested) nested inside another gridview (gvParent). I want to get the selected value of the nested gridview, but keep getting the classic 'object reference not set to an instance' error. I thought that this would work
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Where gv.SelectedValue would return the information I needed.
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Mar 24, 2010
I am using C# with Access/SQL databases. I have this piece of code for a nested gridview using access database working fine:
private AccessDataSource ChildDataSource(string strProjectCode, string strSort)
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Aug 13, 2010
i'm new on this forum and my english is not the best, so i hope that i can explain my problemI have a gridview nested in a Repeater, this is the markup :
<ItemTemplate>
<asp:GridView ID="GridView1" EmptyDataText="<%#((mioDataTable)Container.DataItem).categoria %>" runat="server" AutoGenerateColumns="False" CellPadding="4" CssClass="grid" DataKeyNames="id"
[code]...
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Dec 1, 2010
In nested gridview, i am finding some problem, i want to show child Grid headers in Parent Gridview. Can anyone tell me that how it is possible? Its very urgent. Waiting for quick response.
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Jul 3, 2010
I have created a gridview (this is a usercontrol) with another gridview (also a usercontrol) inside it. Now I would like to bind a checkboxlist to the inner gridview. This is my markup for the inner gridview user control
<asp:GridView AutoGenerateColumns="False" GridLines ="None" Width ="100%"
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Jan 8, 2010
Am trying to build nested gridview with Edit,Update and Delete operations.Everything works fine at parent level,but child grid is only having last fetched datatable records.Any idea whats going on:
when i run the application,i can see parent grid showing all records.But the problem is with child grdiview which is showing the last recordset of childdata on expanding first row of parent grid.No idea whats going on...
Here is the aspx code:
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Here is the Codebehind:
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Aug 19, 2010
I've got this page where I display a 3 level nested gridview. First gridview displays data, 2nd one displays data based on the 1st one's row and 3rd one displays data based on the 2nd gridview. All of this works perfectly, including the edit mode for the 3rd gridview.
The issue comes when I make each gridview collapsible, again, it works fine but when I click on "Edit" on the 3rd gridview all the grids collapse, I can then re-open them and the "edit mode" is still present and I can still save my updated data. But that collapsing thing is quite annoying. I based a lot of my code from this page: [URL] And I understand how I can fix my issue on a 2 level nested gridview, by simply adding the C# code:
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This makes allows me to save the index and prevent it from collapsing when I'm editing. Unfortunately, because I'm actually editing the 3rd gridview, if I code:
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That simply doesn't work because I get the error "GridView2 does not exist in the current context". I also tried adding it to the .designer.cs page, but that doesn't change anything and still doesn't work. I'm not at work atm, and hence cannot paste the entire code, however, would anyone still have any idea as to how I can fix that issue?
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Jul 22, 2010
my page based on master and Details. there are two gridview one is header and other detail.detail gridview is inner gridview.so when i click on + symbol then details should diplay.i use dataKeys for display Inner gridview record.when i use one datakeys then it is working fine but i need two condtion for show Inner Gridview. how can use multiple datakeys here?my HTML code is below. just modify it for multiple Datakeys
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Jan 14, 2010
I have an image button on my gridview in one column, and in the next column, I have a nested gridview. What I am looking to do, is to use my image button as a way to show and hide my nested gridview. I do not want to use JavaScript, because my page already uses a great deal of JavaScript. Therefore, I want to use code behind on the button, this is what I have done so far:
ImageButton b = (Button)sender;
GridViewRow row = (GridViewRow)b.NamingContainer;
if (row != null) {
int rowIndex = row.RowIndex;
How do I use my selected row index to call the nested gridview to be visible and not visible?
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Mar 30, 2011
I have created a nested gridview and want to be able to export the gridview to CSV file. When I export it it also exports all the HTML in the file which I do not want. It is fine if i export it to and XLS file though.
I just wondered if anyone has managed to export to CSV with nested gridviews without the HTML getting exported also.
Here is my code
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and here is my gridview
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I am setting the datasource for the nested repeater here:
[Code]....
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Mar 8, 2011
First, what I am showing here works fine, and I know how to do this if the nested control comes from the same bound table. I could leave it at that, but I don't like SQL code in my aspx page, and want to move it. I'm keeping it simple here, but I can move it to a data access layer later on..... for now, I want to understand what's going on when the page loads and the nested control is rendered and populated. WHAT I LEARN FROM THIS WILL BENEFIT ME ACROSS THE BOARD - NOT just for this instance!!!
My question is, how to grab the SQL query from the aspx page for the NESTED control and move it to the codebehind. I'd LOVE to also move the Selected Value parameter if possible, but mainly want to get the SQL out of the page. I KNOW HOW TO DO THIS for a GridView or any control, but I DO NOT know how to do it for a NESTED CONTROL from a different table - i.e. WHERE it fires (on GridViewEditing or GridViewUpdating or PageLoad....) so I can put in the SQL where it belongs.... and I'm PRETTY darn SURE this can be done without a 'foreach' loop. For discussion's sake here, imagine
1. DATABASE: simple table with employee_ID, employee_name, employee_city as fields
2. DATABASE: simple table containing all cities (city, cityval)
2. simple GridView that displays these 3 fields in same order ON VIEW
3. Template field for city. On PAGE LOAD, this is a simple label bound to the 'city' field. HOWEVER - On EDIT (with edit button), the field changes to a nested DropDownList that is bound to the 'city' table, NOT to the employee table.
4. Selected value is the current city for employee The PROC you see here in the edit item SQL is actually SELECT * FROM [cities] ORDER BY [city_name]
<asp:GridView ID="grdEmployee" runat="server" AutoGenerateColumns="False"
CssClass="grdE" DataKeyNames="employee_ID"
ShowFooter="True">
<Columns>
<asp:BoundField DataField="employee_ID" HeaderText="ID" ReadOnly="True" />
<asp:TemplateField HeaderText="Employee Name">
<ItemTemplate>
<asp:Label ID="lblEmployeeName" runat="server" Text='<%#Eval("employee_name")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtEmployeeName" runat="server" Text='<%#Eval("employee_name")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="City">
<EditItemTemplate>
<asp:DropDownList ID="cboCity" runat="server"
DataSourceID="SqlDataSource1" DataTextField="city" DataValueField="cityval"
SelectedValue='<%# Bind("employee_city") %>'>
</asp:DropDownList>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="Data Source=XXXXXXXXXXXX;Initial Catalog=xxxxxxx;Integrated Security=True"
ProviderName="System.Data.SqlClient"
SelectCommand="QUERY_CITY" SelectCommandType="StoredProcedure"></asp:SqlDataSource>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblEmployeeCity" runat="server" Text='<%# Bind("employee_city") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
ALL I want to do is move the SQL Query in the EDIT template above to the code behind. I just don't know WHERE or WHEN in the code this fires and how to handle it when the table is different from the original GridView table. AND the cboCity.SelectedValue, if possible.
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Jun 28, 2010
In the parent gridview the footer is appearing correct. in the child gridview the footer is not appearing.
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Aug 31, 2010
I have a GridView within a GridView. I want o access child gridview's rowupdating event. i want to update row.
this is my GridView's code as follows
[Code]....
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Aug 13, 2010
I'm attempting to create a 3-level deep nested gridview. I get the data in the right columns on the right rows, my problem is the columns aren't aligning.
My parent is OK, but it seen to break down when I add the second and third gridview. I've used the method of:
1. creating a table after my templatefield/Itemtemplate
2. then placing a .tr. and .td. before the first child gridview. But as I see the problem, if the child gridview is a .td. how do I add another .td. to that row?
I've attached a
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