Select value from drop down then other fields shows value in textfield depends on the dropdown.

em new in VB.NET & develop a web based transaction which is almost 50% complete.

my problem is that i have a form of Item properties, which consist on a following fields,

1. Item
2. Unit
3. Old Price
4. New Price

 my client wants that if user select Item from the dropdown then other fields shows value automaticlly on the textfields which is depend on the item name.

for example:

if user select Colgate from the dropdown then Unit, Old Price and New Price shows in textfeilds seperately. 

 if u have any code and tutorial about the above example then kindly share with me i will be very thankful.

Kindly solve my problem as soon as possble.

11/11/2008 7:57:17 AM 72751 articles. 3 followers. Follow

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Hi asad_black,

Try something like this :


    protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
        SqlConnection con = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database2.mdf;Integrated Security=True;User Instance=True");
        SqlCommand com = new SqlCommand("select countryname from country where countryid = " + this.DropDownList1.SelectedValue, con);
        SqlDataReader reader =  com.ExecuteReader();
        while (reader.Read())
            this.TextBox1.Text = reader.GetString(0);
    <form id="form1" runat="server">
        <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString2 %>"
            SelectCommand="SELECT * FROM [country]"></asp:SqlDataSource>
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
        <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True" DataSourceID="SqlDataSource1"
            DataTextField="countryname" DataValueField="countryid" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged">



Samu Zhang
Microsoft Online Community Support

Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question.
11/13/2008 3:27:26 AM

 Here is a Sample done using FormView. Place a DropDownList which consists of all the Items. Once Item is selected, display the details in the Form Fiew.


<form id="form1" runat="server">
            <asp:FormView ID="FormView1" runat="server" DataSourceID="SqlDataSource1">
                     <br /><br />
                    <asp:Label ID="lblUnit" runat="server" Text='<%# Eval("Unit") %>' /><br /><br />
                    Old Price:
                    <asp:Label ID="lblOldPrice" runat="server" Text='<%# Eval("OldPrice") %>' /><br /><br />
                    New Price:
                    <asp:Label ID="lblNewPrice" runat="server" Text='<%# Eval("NewPrice") %>' /><br /><br />
                    <asp:DropDownList ID="ddl" runat="server" DataTextField="Product" DataValueField="PId" AutoPostBack="True" DataSourceID="SqlDataSource2" style="position: relative" /><asp:SqlDataSource
                        ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:testConnectionString %>"
                        SelectCommand="SELECT * FROM [Products]"></asp:SqlDataSource>
            <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:testConnectionString %>"
                SelectCommand="SELECT * FROM [Details] WHERE ([ProductId] = @ProductId)">
                    <asp:ControlParameter ControlID="ddl" Name="ProductId" PropertyName="SelectedValue"
                        Type="Int32" />


Code Behind:


public partial class Items : System.Web.UI.Page
    protected void Page_Load(object sender, EventArgs e)
        if (!Page.IsPostBack)
Achutha Krishnan

~ No one can do everything, but everyone can do something ~
11/13/2008 4:54:41 AM

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