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

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)
  {

  }

CodePudding user response：

This may get you started...

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

CodePudding user response：

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]
    }