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How to Find the Inner Gridview in a nested GridView via external button click event?

I have an issue with nested Gridview!
I have two Girdviews with the ID - GridView1(Parent Gridview) and GV2(Child Gridview)
I have a Asp:Button with the ID - btnedit(Event = OnClick())
Qs: how to access GV2 in btnedit_Onclick event?
I have attached the Code for your Reference:
<form id="form1" runat="server">
<asp:Button runat="server" ID="btnedit" Text="Edit" OnClick="btnedit_Click" />
<asp:GridView runat="server" ID="Gridview1">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:Label runat="server" ID="Lable1"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:GridView runat="server" ID="GV2">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:Label runat="server" ID="Lable2"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</form>
code Behind:
protected void btnedit_Click(object sender, EventArgs e)
{
}

Ok, so the user wants to operate on the row 1 of main GV and then get row 1 of the child.
Gridviews start at 0, so it not clear, but lets take the both first rows.
next up? I really (but really really really) suggest you use a main listview and then nest a child GV.
If you nest two GV's, you tend to get this:
Say this GV, with a "+" to expand the child grid:
And expanding, you get this:
So, nesting grids is VERY hard, since the "col span" is hard to setup.
However, if I build a main listview (looks the same as a GV), and then next a gv, then I get this:
So above uses a main list view, and thus for expanding child reocrds I do and did use a GV in the child of the listview.
I can post how above works and even the markup if you wish.
However, lets go with the two nested GV's - it will make a mess of a UI but for learning, how this works with the above nested LV + GV, or a GV + GV is the same.
So, some plane jane button - outside of the two grids, get the first row of the main, then the first row of the child grid.
This works:
protected void Button1_Click(object sender, EventArgs e)
{
GridViewRow MainGvRow = GridView1.Rows[0];
GridView ChildGV = MainGvRow.FindControl("GridView2") as GridView;
GridViewRow ChildGVRow = ChildGV.Rows[0]
}

This may get you started...
GridView gvGV2 = e.Row.FindControl("GV2") as GridView;
gvGV2.DataSource = "..."; //Your DataSource
gvGV2.DataBind();
// or do something else.

Get the index of a row in a table from code behind

I have a table with two columns and multiple rows, the first column has names and the second one has buttons, how can I get the name next to the button when I click any button.
The names will be taken from a database and the buttons will be generated from code behind depending on the number of names I have in my database.
Let's say that I have this:
<asp:table runat="server" id="table1">
<tr><td>Name1</td><td><asp:Button runat="server" Text="Save"/></td></tr>
<tr><td>Name2</td><td><asp:Button runat="server" Text="Save"/></td></tr>
<tr><td>Name3</td><td><asp:Button runat="server" Text="Save"/></td></tr>
</asp:table>
How can I know which name is next to the button, when I click any of them, I want to get the name so that I can save it in a database.

use for your designer code something similar to this:
<asp:GridView ID="GridView" runat="server" OnRowCommand="gvUsers_RowCommand" AutoGenerateColumns="True">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:LinkButton ID="detail_LB" runat="server" Text="Detail" CommandName="Detail_LB" CommandArgument="<%# ((GridViewRow) Container).RowIndex %>"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
Notice the OnRowCommand and for the LinkButtons the CommandName and CommandArgument. The argument contains the row number, where you clicked the button.
In your code behind:
protected async void gvUsers_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "Detail_LB")
{
//index contains the row number
int index = Convert.ToInt32(e.CommandArgument);
//get text in the cell next to the button
string text = gvUsers.Rows[index].Cells[0].Text;
}
}
If hope this helps you to understand how to work with tables.

Rowdeleteing event in Gridview

I have been trying to write this simple logic of deleting a row from the gridview and from the SQL database of the selected row, but keep getting a null reference to cell, which has the primary key [ID] in a field.
Here's my html:
<asp:GridView ID="grvInventoryEdit" runat="server" BackColor="White" onrowdeleting="grvInventoryEdit_RowDeleting"
onrowediting="grvInventoryEdit_RowEditing"
onrowupdating="grvInventoryEdit_RowUpdating">
<Columns>
<asp:CommandField ShowEditButton="True" />
<asp:CommandField ShowDeleteButton="True" /><asp:TemplateField HeaderText="Id">
<ItemTemplate>
<%#Eval("No")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox runat="server" ID="txtEditNo" ReadOnly="True" Text='<%#Eval("No")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>........ </Columns> </asp:GridView>
And my back-end code for rowdeleting event is :
protected void grvInventoryEdit_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
TextBox id = (TextBox)grvInventoryEdit.Rows[e.RowIndex].FindControl("txtEditNo");
Asset asset = db.Assets.Single(a => a.No == Convert.ToInt32(id));
db.Assets.DeleteOnSubmit(asset);
db.SubmitChanges();
binddata();
}
and when the event fires, this is what i am seeing while debugging:
I am not sure why i am getting a null value ,though, there is a value for that cell.
Could you tell me what i am doing wrong ?
Regards,

Might be it is due to the readonly property of textbox, not suer.
If you want to use the image button for edit and delete then use
protected void ibtnDelete_Click(object sender, ImageClickEventArgs e)
{
GridViewRow gvRow = (GridViewRow)((ImageButton)sender).NamingContainer;
Int32 UserId = Convert.ToInt32(gvUsers.DataKeys[gvRow.RowIndex].Value);
// delete and hide the row from grid view
if (DeleteUserByID(UserId))
gvRow.Visible = false;
}
For complete code see

You are passing TextBox object instead instead of Text property of TextBox
Asset asset = db.Assets.Single(x=>x.No == Convert.ToInt32(id.Text));
and your TextBox is also coming null means it's unable to find it in GridView, try like this:
TextBox id = e.Row.FindControl("txtEditNo");
Also see this CodeProject article to understand how to use ItemTemplate and EditItemTemplate

why are you adding a second commandfield instead of just enabling the delete button on the existing one.
if you are using a command field you should be supplying an compatible datasource that provides Delete functionality
if you're "rolling your own" delete functionality then just use a regular Button control and supply a CommandName and CommandArgument, such as CommandName="MyDelete" CommandArgument=<row number> where <row number> is supplied via GridView RowDataBound() event.
Regardless of how you choose to implement Delete you should be placing the key field in the GridView DataKeys Property and not as a field within each row. This will make obtaining the PK far easier than what you are trying to do

I guess, in my HTML, i have only the value that's bound to the item, is being displayed, and there are no textboxes in my <ItemTemplate>, hence, it pulls null value. Whereas, in my <EditItemTemplate> there is a textbox, which can pull the value from the cell.
So I changed my HTML to this:
<asp:TemplateField HeaderText="Id">
<ItemTemplate>`<asp:label runat="server" ID="lblEditNo" ReadOnly="True" Text='<%#Eval("No")%>'></asp:label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox runat="server" ID="txtEditNo" ReadOnly="True" Text='<%#Eval("No")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
and no change in my codebehind, and this resolved the issue.

How do I get the value of a Cell in a GridView?

I have review various questions here, regarding this, however I still cannot get this to work.
I have a grid view (OrderList) and in this gridview I have a column with a button to simply update a particular field (basically mark an order as accepted).
In the aspx file I have the following code
<asp:TemplateField>
<ItemTemplate>
<asp:Button ID="ButtonToAcceptOrder" runat="server" Text="Accept Order" CommandName="AcceptOrder" CommandArgument="<%# ((GridViewRow) Container).RowIndex %>" />
</ItemTemplate>
</asp:TemplateField>
In the code Behind file, I have the following code:
protected void OrderList_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName =="AcceptOrder")
{
// Retrieve the row index stored in the
// CommandArgument property.
int index = Convert.ToInt32(e.CommandArgument);
// Retrieve the row that contains the button
// from the Rows collection.
GridViewRow row = OrderList.Rows[index];
Int32 oId = Int32.Parse(row.Cells[1].Text);
//Code to Update database by order id
}
}
The error is coming from oId telling that the input is not in the correct format.
In the first column of the gridview I am displaying the ID of that I require. Whilst the other columns are showing the other details.
If you spot any problems in my code can you kindly help?
(I have previously followed this tutorial: http://msdn.microsoft.com/en-us/library/vstudio/bb907626(v=vs.100).aspx)

If you have an unique id for each row, then you should be using the DataKeyNames property of the GridView.
<GridView id="OrderList" DataKeyNames="oId"... />
Then in your RowCommand code, access it like this:
Int32 oId = OrderList.DataKeys[row.DataItemIndex].Value;
This is much cleaner than trying to get value from a cell.

ASP.net C# Gridview ButtonField onclick event

I've written an ASP code for a webshop type project. There is a method that adds the ProductID to a cookie and adds 1 to the quantity of the product.
Another method reads the cookie, transforms the cookie to a data table and puts it in a gridview. This gridview basically is the shoppingcart.aspx page.
What i now need is a way to add a buttonfield to that gridview where i can add a ++ button (like the add to shopping cart button on a product page), normal asp buttons take a onclick="methodname" but these in the gridview don't.
add1ToShoppingCart(string productId)
{[...]shoppingCartCookie[productId] = (amount + 1).ToString();}
That is the code I use for all the ++ buttons. It takes the button.id (buttonID=productID). So I need a way to have all the buttons be the same image, but the buttonID has to be databound to the productID so it can somehow execute that method (with some sort of onclick="").
I've looked and googled for the past couple hours but I cant seem to find anything. In the past I found a lot of answers on stackoverflow so I hoped somebody here could help.
Thanks in advance.

you can use Template field :
<asp:TemplateField ItemStyle-Width="33px" ItemStyle-HorizontalAlign="Center" ItemStyle-VerticalAlign="Middle"
ShowHeader="false" HeaderStyle-Height="40px">
<ItemTemplate>
<asp:ImageButton ID="btnAddToCard" runat="server" ImageUrl="~/Images/btnAddToCard.png" CausesValidation="false"
CommandName="AddToCard" CommandArgument='<%# Eval("ID") %>'
/>
</ItemTemplate>
<HeaderStyle Height="40px"></HeaderStyle>
<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="33px"></ItemStyle>
</asp:TemplateField>
and in your C# code behind you create the following event of your gridview and do what you want :
protected void GV_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "AddToCard")
{
//Write code to add to card
}
}
GV is the ID of my GridView !