DataSource Controls :: Linking Multiple DropDownLists To A Single SQLDataSource?
Jul 16, 2010
I'm attempting to hook up multiple DropDownLists to a single SQLDataSource, but I want the SQLDataSource to return different rows depending on which DropDownList it is populating.
Say I have a table full of names (we'll call it TABLE_NAMES):
[code]....
....and I have two dropdown lists, one with a list of person names and one with a list of dog names.
Is there a way to link up each of these dropdown lists to a single SQLDataSource and use the SelectParameter to differentiate between which records I want returned for each dropdown list?
To make matters worse, these dropdown lists will appear within a GridView control....so there will be multiple instances of each dropdown list depending on how many rows there are in the GridView.
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[Code]....
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[code]...
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[Code]........
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I'm having trouble linking a form view I have on a web page with a drop down list on the same page. Basically, what I need to happen is whenever a new selection is chosen from the drop down list, the details in the form view should also change to represent that selection's criteria.
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PS - Here is the code I have in the back end of the page:
[Code]....
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[Code]....
[Code]....
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hope you guys are doing well! I have a question and no answer yet how to do it. Right now i can have 1 dropdownlist and when i press on my search button its show the result of the query the user ask
but how to do it with two seperates dropdownlist ? isnt it with inner join ? also if the value is null what to do ?
here is my sample little code for a sample search
[Code]....
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[Code]....
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I hope somebody can guide me to overcome below challenge.
My form has three dropdownlist controls and one listview. Everything works fine if I don't try to pass multiple querystrings to get different URL on the same page. But challenge comes when I try to pass multiple querystrings to show different URL's for SEO.
Following are the ID's:
1. DropDownList1= Country
2. DropDownList2= State
3. DropDownList3= City
4. Listview1= Resturants (I am not including Code .....yet)
With my code DropDownList1 holds the state and passes the value to URL OK .When I try to select
different value in DropDownList2 or DropDownList3 are able to
pass the vaule to URL but in the form they stay on the first item and doesn't change and so does Listview1.
Here is my code:
<%@ Page Language="C#" AutoEventWireup="true" %>
<%@ Import Namespace="System.Data" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
if (false == IsPostBack)
{
if (Request.QueryString["Brand"]!= null)
{DropDownList1.SelectedValue = Request.QueryString["Country"].ToString();}
if (Request.QueryString["Gender"]!= null)
{DropDownList2.SelectedValue = Request.QueryString["State"].ToString();}
if (Request.QueryString["Category"]!= null)
{DropDownList3.SelectedValue = Request.QueryString["City"].ToString();}
}
}
protected void DropDownList_SelectedIndexChanged(object sender, EventArgs e)
{
Response.Redirect("/resturants.aspx?State=" + DropDownList1.SelectedValue + "&State=" + DropDownList2.SelectedValue + "&City=" + DropDownList3.SelectedValue);
}
</script>
<head></head>
<body><form id="form1" runat="server">
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</asp:DropDownList>
<asp:AccessDataSource ID="AccessDataSource2" runat="server" DataFile="../database.mdb" SelectCommand="SELECT DISTINCT [Country] FROM [Country] ORDER BY [Country]">
</asp:AccessDataSource>
<asp:DropDownList id="DropDownList2" runat="server" AutoPostBack="True" DataSourceID="AccessDataSource3" DataTextField="State" DataValueField="State" ForeColor="#808080" OnSelectedIndexChanged="DropDownList_SelectedIndexChanged" >
</asp:DropDownList>
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<SelectParameters>
<asp:controlparameter ControlID="DropDownList1" Name="Restuarant_NAME]" PropertyName="SelectedValue" Type="String" />
</SelectParameters>
</asp:AccessDataSource>
<asp:DropDownList id="DropDownList3" runat="server" AutoPostBack="True" DataSourceID="AccessDataSource4" DataTextField="City" DataValueField="City" ForeColor="#808080" OnSelectedIndexChanged="DropDownList_SelectedIndexChanged" >
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<SelectParameters>
<asp:controlparameter ControlID="DropDownList2" Name="State" PropertyName="SelectedValue" Type="String" />
<asp:controlparameter ControlID="DropDownList1" Name="Resturant_NAME" PropertyName="SelectedValue" Type="String" />
</SelectParameters>
</asp:AccessDataSource>
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[code]...
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Here's the link to the the article/source - [URL] .....
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Source code is. [Code]....
Code Behind the wizard control
Partial Class Registration
Inherits BasePage [Code]....
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----------------------
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