DropDownList SelectedIndexChanged in gridview

vamshidhar · August 17th, 2009, 07:01 AM

hi everbody....

I have taken 3 dropdownlists in gridview when i select the value in first dropdownlist then accourding to that value i should bind 2 and 3 dropdownlists.
my first dropdownlist SelectedIndexChanged event is not firing...

Code:

 
    protected void grid1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            string s2 = "select subDivisionName from Tbh_SubDivsionMaster";
            SqlDataAdapter ada = new SqlDataAdapter(s2, con);
            DataSet ds = new DataSet();
            ada.Fill(ds);
            DropDownList ddl1 = (DropDownList)e.Row.FindControl("ddl1");
            ddl1.DataSource = ds;
            ddl1.DataTextField = "subDivisionName";
            ddl1.DataBind();
         }
    }
    protected void ddl1_SelectedIndexChanged1(object sender,EventArgs e)
    {
        DropDownList d1=new DropDownList();
        DropDownList d2=new DropDownList();
        DropDownList d3=new DropDownList();
        foreach(GridViewRow row in grid1.Rows)
        {
            d1=(DropDownList)row.FindControl("ddl1");
            d2=(DropDownList)row.FindControl("div");
            d3=(DropDownList)row.FindControl("cir");
            if (d1.SelectedValue.ToString() == "CD I UDR")
            {
                d2.Visible = false;
                d3.Visible = false;
            }
            else
            {
                d2.Visible = true;
                d2.Visible = true;
            }
        }
    }

HTML Code:

 <asp:GridView ID="grid1" runat="server" OnRowDataBound="grid1_RowDataBound"  AutoGenerateColumns="False" BackColor="LightGoldenrodYellow" BorderColor="Tan" BorderWidth="1px" CellPadding="2" ForeColor="Black" GridLines="None"     >
                               <Columns>
                                 <asp:TemplateField>
                                      
                                      <ItemTemplate>
                                            <asp:DropDownList ID="ddl1" runat="server" DataTextField="subDivisionName" OnSelectedIndexChanged="ddl1_SelectedIndexChanged1" AutoPostBack="true" >
                                            
                                            </asp:DropDownList>
                                        </ItemTemplate>
                                 </asp:TemplateField>
                                 <asp:TemplateField>
                                      
                                      <ItemTemplate>
                                            <asp:DropDownList ID="div" runat="server" DataTextField="DivisionName"   ></asp:DropDownList>
                                        </ItemTemplate>
                                 </asp:TemplateField>
                                 <asp:TemplateField>
                                    
                                      <ItemTemplate>
                                            <asp:DropDownList ID="cir" runat="server" DataTextField="Circle" ></asp:DropDownList>
                                        </ItemTemplate>
                                 </asp:TemplateField>
                                 <asp:TemplateField>
                                     
                                      <ItemTemplate>
                                            <asp:Label ID="empname" runat="server" Text='<%#Bind("EmployeeName")%>'></asp:Label>
                                        </ItemTemplate>
                                 </asp:TemplateField>
                                   
                               </Columns>
                              
                          </asp:GridView>