problem with the nested gridview asp.net/C#

Question

I have a gridview1 which is the parent gridview and I want to insert another gridview2 which is child gridview inside every row of parent gridview

This is the code in the .aspx

<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<asp:GridView ID="GridView1" runat="server">
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
                <asp:GridView ID="gridView2" runat="server">
                </asp:GridView>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

This is the code that I have added inside the RowDataBound Event and i'm just binding the gridview2 with the arraylist which is filtered data depending upon the contents of each row's invoice number

 protected void GridView1_RowDataBound(Object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            foreach (GridViewRow gridviewrow in GridView1.Rows)
            {
                gridView2.AutoGenerateColumns = true;
                String x = gridviewrow.Cells[1].Text;
                softwareTitlesList = SoftwareListRetrieve();
                ArrayList titles = new ArrayList();
                foreach (SoftwareTitles softwareTitle in softwareTitlesList)
                {
                    if (softwareTitle.InvoiceNumber.Contains(x))
                        titles.Add(softwareTitle.SoftwareTitle);
                }
                gridView2.DataSource = titles;
                gridView2.DataBind();
            }
        }
    }

But nothing seems to be happening.

Please help me

Thanks in anticipation

jmccarthy · Accepted Answer · 2011-03-30 11:16:50Z

1

One problem is that you are doing this inside the RowDataBound Event. This is going to be fired for every row in GridView1 that is bound to the datasource. You are essentially resetting the DataSource for GridView2 every time. Try using the DataBound Event of the gridview instead.

answered Mar 30, 2011 at 11:16

jmccarthy

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2 Comments

Sreedhar Danturthi Over a year ago

can u put your idea into coding. It would be more clear for me. Please !! Thanks in anticipation !

Fandango68 Over a year ago

But if you put it inside a DataBound, then how are you going to iterate through each row updating GridView2 and making it refresh for each row? I tried this and it made all the GridView2 data look the same as the first row's GridView2.

Muhammad Akhtar · Accepted Answer · 2011-03-30 11:39:08Z

0

RowDataBound event fire when Rows bind the data. you have to do like...

protected void GridView1_RowDataBound(Object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        System.Data.DataRowView dr = (System.Data.DataRowView)e.Row.DataItem;

            gridView2.AutoGenerateColumns = true;
            String x = dr["yourColumnName"].ToString();
            softwareTitlesList = SoftwareListRetrieve();
            ArrayList titles = new ArrayList();
            foreach (SoftwareTitles softwareTitle in softwareTitlesList)
            {
                if (softwareTitle.InvoiceNumber.Contains(x))
                    titles.Add(softwareTitle.SoftwareTitle);
            }
            GridView gridView2 = (GridView)e.Row.Findcontrol("gridView2");//add this
            gridView2.DataSource = titles;
            gridView2.DataBind();

    }
}

Edit for comments:

GridView gridView2 = (GridView)e.Row.Findcontrol("gridView2");// add this line

edited Mar 30, 2011 at 11:39

answered Mar 30, 2011 at 11:14

Muhammad Akhtar

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4 Comments

Sreedhar Danturthi Over a year ago

I have a new problem now it is giving me error "The name 'gridView2' does not exist in the current context" Is there any thing else i need to add to be able to access inside the .aspx.cs file

Sreedhar Danturthi Over a year ago

protected void GridView1_RowDataBound(Object sender, GridViewRowEventArgs e) Even this method is not getting called !! What is the problem ?

Muhammad Akhtar Over a year ago

you have to add event in your Gridview <asp:GridView ID="GridView1" runat="server" OnRowDataBound="GridView1_RowDataBound">

Sreedhar Danturthi Over a year ago

Thanks Muhammad !! I owe you. Thank you for immediate responses. It worked. Have a nice day.

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