How to select row in nested grid

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My code

XML

<asp:GridView ID="HeaderGV" runat="server" AutoGenerateColumns="False" OnRowDataBound="HeaderGV_RowDataBound"
                                  Width="100%" OnSelectedIndexChanged="HeaderGV_SelectedIndexChanged" HeaderStyle-CssClass="grid_col_head">
                                  <Columns>
                                      <asp:BoundField DataField="SNO" HeaderText="SNO" ReadOnly="true" ItemStyle-Width="15">
                                          <ItemStyle Width="15px" />
                                      </asp:BoundField>
                                      <asp:TemplateField HeaderText="Header">
                                          <EditItemTemplate>
                                              <%--<asp:TextBox ID="HeaderTxt"  runat="server"></asp:TextBox>--%>
                                              <asp:Label ID="HeaderLbl" runat="server" Text='<%#Bind("PARAM_HEAD_NAME") %>'></asp:Label>
                                          </EditItemTemplate>
                                          <ItemTemplate>
                                              <asp:Label ID="HeaderLbl" runat="server" Text='<%#Eval("PARAM_HEAD_NAME") %>'></asp:Label>
                                              <asp:GridView ID="ParamGV" runat="server" AutoGenerateColumns="False" OnSelectedIndexChanged="ParamGV_SelectedIndexChanged"
                                                  OnRowDataBound="ParamGV_RowDataBound" Width="100%" HeaderStyle-CssClass="grid_col_head">
                                                  <Columns>
                                                      <asp:BoundField DataField="SNO" ItemStyle-Width="15">
                                                          <ItemStyle Width="15px" />
                                                      </asp:BoundField>
                                                      <asp:BoundField DataField="PARAM_HEAD_ID" />
                                                      <asp:BoundField DataField="PARAM_SUB_ID" />
                                                      <asp:BoundField DataField="PARAM_SUB_NAME" />
                                                      <asp:CommandField SelectText="EDIT" ShowSelectButton="True" ItemStyle-Width="15"
                                                          HeaderText="EDIT">
                                                          <ItemStyle Width="15px" />
                                                      </asp:CommandField>
                                                  </Columns>
                                              </asp:GridView>
                                          </ItemTemplate>
                                      </asp:TemplateField>
                                      <asp:BoundField DataField="PARAM_HEAD_ID" HeaderText="HeaderID" ReadOnly="true" />
                                      <asp:CommandField HeaderText="EDIT" ItemStyle-Width="15" SelectText="EDIT" ShowSelectButton="True">
                                          <ItemStyle Width="15px" />
                                      </asp:CommandField>
                                  </Columns>
                                  <HeaderStyle CssClass="grid_col_head" />
                              </asp:GridView>

MSIL

protected void ParamGV_SelectedIndexChanged(object sender, EventArgs e)
       {
           try
           {


               GridViewRow row = HeaderGV.SelectedRow;
               int rowindex= HeaderGV.SelectedIndex;

               GridView gv = this.HeaderGV;
               GridView gv1 = (GridView)this.HeaderGV.Rows[rowindex+1].FindControl("ParamGV");



           GridViewRow Childrow = gv1.SelectedRow;

           int RowIndex = gv1.SelectedIndex;
           HeadNameDdl.SelectedValue = Server.HtmlDecode(Childrow.Cells[1].Text).Trim();
           ViewState["ParameterId"] = Server.HtmlDecode(Childrow.Cells[2].Text).Trim();
           ParameterNametxt.Text = Server.HtmlDecode(Childrow.Cells[3].Text).Trim();


           }
           catch (Exception ex)
           {
               Literal li = new Literal();
               li.Text = "<script> alert('" + ex.Message + "');</script>";
               Page.Controls.Add(li);
           }
       }

in my code HeaderGV(master) ParamGV (child)

In itemTemplate of master grid i placed a child grid
when i want to fire selectedIndexchanged event for child grid am unable to get mastert grid row

Posted 11-Oct-10 1:24am

karthikkushala

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Ed Guzman · Answer 1 · 2010-10-11T02:23:00

Solution 1

The basic technique on nested items within an ASP.NET Data Control
item template is:

Subscribe OnItemDataBound event for a parent grid.
Find the nested controm within the event handler funcntion :
DataGrid ParamGV= (DataGrid)e.Item.FindControl("ParamGV ");
Once you have this nested grid in your function you can do anything
you want with it: subscribe for events, assign parameters, etc..

PS. code may slightly vary for different data controls. I am more familiar with DataView or Repeater, but the pattern is the same

Posted 11-Oct-10 2:23am

Ed Guzman

Comments

karthikkushala 12-Oct-10 0:26am

Thank q for replying i will try it

karthikkushala 12-Oct-10 0:47am

protected void HeaderGV_RowDataBound(object sender, GridViewRowEventArgs e)
{
GridViewRow row = e.Row;
if (e.Row.RowType != DataControlRowType.Pager)
{
e.Row.Cells[2].Visible = false;
if (Session["Type"].ToString() == "Parameter")
{
if (e.Row.RowType == DataControlRowType.DataRow)
{

e.Row.Cells[1].ForeColor = System.Drawing.Color.FromArgb(153, 0, 0);
e.Row.Cells[1].BackColor = Color.FromArgb(221, 221, 221);
//e.Row.Cells[1].Font.Bold = true;
e.Row.Cells[1].Font.Size = 12;
e.Row.Cells[1].Font.Name = "Century";
//e.Row.Attributes.Add("onmouseover", "this.className='highlightrow'");
//e.Row.Attributes.Add("onmouseout", "this.className='normalrow'");
//this is line of code because of ur suggestion
GridView Par = (GridView)e.Row.FindControl("ParamGV");

}
if (e.Row.RowType == DataControlRowType.Header)
{
e.Row.Cells[1].Visible = false;
e.Row.Cells[2].Visible = false;
}
e.Row.Cells[0].Visible = false;
e.Row.Cells[3].Visible = false;

}

}

if (row.DataItem == null)
{
return;
}

GridView gv = new GridView();
objdc.HeaderID = Convert.ToInt32(row.Cells[2].Text);
gv = (GridView)row.Cells[1].FindControl("ParamGV");
DataTable dt = new DataTable();
if (gv != null && Session["Type"].ToString() == "Parameter")
{
dt = objbl.FillGridForFormParameters(ref objdc);
gv.DataSource = dt;
gv.DataBind();
}
else
{
//gv.DataSource = null;
//gv.DataBind();
}

}

sir but i have to write selectindexchage for my child grid
when i wrote GridView Par = (GridView)e.Row.FindControl("ParamGV"); in RowDataBound event how would i call ParamGV_selectedIndexChanges

Ed Guzman 12-Oct-10 14:11pm

GridView Par = (GridView)e.Row.FindControl("ParamGV");
Par.SelectedIndexChanged += new EventHandler(ParamGV_SelectedIndexChanged);

void ParamGV_SelectedIndexChanged(object sender, EventArgs e)
{
}

karthikkushala 20-Oct-10 6:02am

protected void ParamGV_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
SaveImgBtn.Visible = false;
UpdateImgBtn.Visible = true;
HeadingRdBtn.Enabled = false;
ParameterRdBtn.Enabled = false;
FormTypeDdl.Enabled = false;
HeadNameDdl.Enabled = false;

GridViewRow row = HeaderGV.SelectedRow;
int rowindex = HeaderGV.SelectedIndex;

GridView gv = this.HeaderGV;
GridView gv1 = (GridView)this.HeaderGV.Rows[rowindex + 1].FindControl("ParamGV");

GridViewRow Childrow = gv1.SelectedRow;

int RowIndex = gv1.SelectedIndex;
HeadNameDdl.SelectedValue = Server.HtmlDecode(Childrow.Cells[1].Text).Trim();
ViewState["ParameterId"] = Server.HtmlDecode(Childrow.Cells[2].Text).Trim();
ParameterNametxt.Text = Server.HtmlDecode(Childrow.Cells[3].Text).Trim();

}

here am getting headerGV selected row -1