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Web Page Design Connected Drop-Downs

Posted on 2010-08-13
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Last Modified: 2012-05-10
I am trying to design a page with linked drop-downs so that when you make one selection the next drop down is limited to items within that selection. My code is listed below. One other problem I am having is that it is listing duplicates of all items that are listed more than once in the database, is there a way to fix that too?
<!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">

<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled 1</title>
</head>

<body>

<form id="form1" runat="server">
	<asp:DropDownList runat="server" id="DropDownList1" DataValueField="ReportedBy" DataTextField="ReportedBy" DataSourceID="SqlDataSource1">
	</asp:DropDownList>
	<asp:SqlDataSource runat="server" ID="SqlDataSource1" ConnectionString="<%$ ConnectionStrings:ChecklistConnectionString %>" SelectCommand="SELECT * FROM [Sorted Responses Comm]">
	</asp:SqlDataSource>
	<asp:DropDownList runat="server" id="DropDownList2" DataValueField="DateReported" DataTextField="DateReported" DataSourceID="SqlDataSource1">
	</asp:DropDownList>
	<asp:DropDownList runat="server" id="DropDownList3" DataValueField="Title" DataTextField="Title" DataSourceID="SqlDataSource1">
	</asp:DropDownList>
	<asp:TextBox runat="server" id="TextBox1"></asp:TextBox>
</form>

</body>

</html>

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Question by:141ANG
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by:Ted Bouskill
ID: 33435560
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mgfranz earned 500 total points
ID: 33436822
When you write a SELECT statement using the *, (everything), you will literally pull everything in the table.  If you use DISTINCT in your query you will not get duplicate records, like this;

SELECT distinct fldTitle FROM myMovies

There is also a qualifier called DISTINCTROW but your database might not accept this.
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Author Closing Comment

by:141ANG
ID: 33468127
worked perfect thank you.
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