User-2054142495 posted
I have created a JQuery accordion of which I’m trying to implement a Cascading DropDownList (4 DropDowns).
The initial dropdown is bound to a stored procedure in the Page_Load event. This populates and works fine.
The other 3 dropdowns are also connected through stored procedures and are placed in their own SelectedIndexChanged events. The first dropdownlist (Page_Load event) also has a separate SelectedIndexChanged event. None of these seem to actually be firing.
When I execute the stored procedures in MSSQL Management Studio they all output the correct result. However one thing I need to mention is the ID for each of the stored procedures is a varchar.
This is from an old, non-relational, single distinct table in a database and not how I would have done it. But it holds too much data to correct.
I've cut the code down as there far too much for these pages
<asp:ScriptManager ID="AccordionScriptManager" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpAccordionSearch" runat="server" ChildrenAsTriggers="false"
UpdateMode="Conditional">
<ContentTemplate>
<div id="tabs-4">
<div class="Table">
<div class="Row">
<div class="Cell">
One:
</div>
<div class="Cell">
<asp:DropDownList ID="ddl1l" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddl1_SelectedIndexChanged" />
</div>
</div>
<div class="Row">
<div class="Cell">
Two:
</div>
<div class="Cell">
<asp:DropDownList ID="ddl2" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddl2_SelectedIndexChanged" />
</asp:DropDownList>
</div>
</div>
<div class="Row">
<div class="Cell">
Three:
</div>
<div class="Cell">
<asp:DropDownList ID="ddl3" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddl3_SelectedIndexChanged" />
</div>
</div>
<div class="Row">
<div class="Cell">
Four:
</div>
<div class="Cell">
<asp:DropDownList ID="ddl4" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddl4_SelectedIndexChanged" />
</div>
</div>
<div class="Row">
<div class="Cell">
</div>
<div class="Cell">
<div class="Row">
<div class="Cell">
<asp:Button runat="server" ID="btn_Reset " Text="Reset" OnClientClick="this.form.reset();return false;" />
</div>
<div class="Cell">
<asp:Button ID="btnAccordion" runat="server" Text="Search" OnClick="btn_Click" />
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnAccordion" EventName="click" />
</Triggers>
</asp:UpdatePanel>
Protected Sub ddl1_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs)
Try
Using con As New SqlConnection(ConfigurationManager.ConnectionStrings("MyConn").ConnectionString)
Using cmd As New SqlCommand()
cmd.CommandType = CommandType.StoredProcedure
cmd.CommandText = "sp_1"
cmd.Parameters.AddWithValue("@one", ddl1.SelectedItem.ToString())
cmd.Connection = con
con.Open()
Dim da As New SqlDataAdapter(cmd)
Dim dt As New DataTable()
da.Fill(dt)
ddl2.DataSource = dt
ddl2.DataValueField = "Code2"
ddl2.DataTextField = "Name2"
ddl2.DataBind()
con.Close()
ddl2.Items.Insert(0, New ListItem("Please select Name2", "0"))
ddl3.Items.Clear()
ddl3.Items.Insert(0, New ListItem("Please select Name3", "0"))
End Using
End Using
Catch
End Try
End Sub
Protected Sub ddl2_SelectedIndexChanged(sender As Object, e As EventArgs)
Try
Using con As New SqlConnection(ConfigurationManager.ConnectionStrings("MyConn").ConnectionString)
Using cmd As New SqlCommand()
cmd.CommandType = CommandType.StoredProcedure
cmd.CommandText = "sp_2"
cmd.Parameters.AddWithValue("@two", ddl2.SelectedValue.ToString())
cmd.Connection = con
con.Open()
Dim da As New SqlDataAdapter(cmd)
Dim dt As New DataTable()
da.Fill(dt)
ddl3.DataSource = dt
ddl3.DataTextField = "Name3"
ddl3.DataValueField = "Code3"
ddl3.DataBind()
con.Close()
ddl3.Items.Insert(0, New ListItem("--Select--", "0"))
If ddl3.SelectedValue = "0" Then
Ddl3.Items.Clear()
Ddl3.Items.Insert(0, New ListItem("--Select--", "0"))
End If
End Using
End Using
Catch
End Try
End Sub
Protected Sub ddl3_SelectedIndexChanged(sender As Object, e As EventArgs)
Try
Using con As New SqlConnection(ConfigurationManager.ConnectionStrings("MyConn").ConnectionString)
con.Open()
Using cmd As New SqlCommand()
cmd.CommandType = CommandType.StoredProcedure
cmd.CommandText = "sp_3"
cmd.Parameters.AddWithValue("@three", ddl3.SelectedItem.Value)
cmd.Connection = con
Dim da As New SqlDataAdapter(cmd)
Dim ds As New DataSet()
da.Fill(ds)
con.Close()
ddl4.DataSource = ds
ddl4.DataTextField = "Name4"
ddl4.DataValueField = "code4"
ddl4.DataBind()
End Using
End Using
Catch
End Try
End Sub
