Reputation: 141
I am trying to create dynamic controls on button click.
HTML:
<asp:LinkButton ID="lnkSrt" runat="server" Text="Multi Sort" ForeColor="Black" Font-Names="Calibri" Font-Size="10pt" />
<ajax:ModalPopupExtender runat="server" ID="mpeSrt"
TargetControlID="lnkSrt" PopupControlID="pnlSrt" CancelControlID="btnClose">
</ajax:ModalPopupExtender>
<asp:UpdatePanel ID="upPanel" runat="server">
<ContentTemplate>
<asp:Panel ID="pnlSort" runat="server" align="center" Style="display: none" BackColor="LightGray">
<asp:Label runat="server" Text="Sort By Column" />
<asp:DropDownList ID="ddlColumnSort" runat="server" AutoPostBack="true" />
<asp:Label runat="server" Text="Order By" />
<asp:DropDownList ID="ddlOrder" runat="server" AutoPostBack="true">
<asp:ListItem Text="Ascending" Value="0"></asp:ListItem>
<asp:ListItem Text="Descending" Value="1"></asp:ListItem>
</asp:DropDownList>
<asp:LinkButton ID="lnkAdd" runat="server" Text="Add Sorting" Font-Underline="true" OnClick="lnkAddOrder_Click" Font-Names="Calibri" Font-Size="10pt" ForeColor="Black" />
<asp:Button ID="btnSorting" runat="server" Text="Sort" OnClick="btnSorting_Click" />
<asp:Button ID="btnClose" runat="server" Text="Close" />
</asp:Panel>
</ContentTemplate>
</asp:UpdatePanel>
CODE:
When clicked on AddSorting I am trying to create dropdown control using below code and the controls doesn't show.
protected void lnkAddSort_Click(object sender, EventArgs e)
{
int index = pnlSort.Controls.OfType<DropDownList>().ToList().Count + 1;
this.Createddl("ddldyn" + index);
}
public void Createddl(string id)
{
DropDownList ddl = new DropDownList();
ddl.ID = id;
pnlSort.Controls.Add(ddl);
Literal lt = new Literal();
lt.Text = "<br />";
pnlSort.Controls.Add(lt);
}
Image:
Upvotes: 0
Views: 804
Reputation: 38693
As per the @Yoshi answer. You could set visible true
for the pnlSrt
control by using pnlSort.Style["display"] = "block";// or pnlSort.Attributes.Add("style", "display:block");
Try this
public void Createddl(string id)
{
DropDownList ddl = new DropDownList();
ddl.ID = id;
pnlSort.Controls.Add(ddl);
Literal lt = new Literal();
lt.Text = "<br />";
pnlSort.Controls.Add(lt);
pnlSort.Attributes.Add("style", "display:block");
}
Upvotes: 0
Reputation: 27039
pnlSrt
is set to display: none
so the dynamically added child controls will not show either.
Upvotes: 2