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9.1

Need ASP.net/Javascript help

Asked by davidsperling in Programming for ASP.NET, JavaScript

In this example, I want the dropdown to be set to "not specified" as soon you start typing free text, and vice versa I want the textbox to become empty when you select something in the dropdown.

Can you show me a good practice how to do this in ASP.net/Javascript

SOURCE PROVIDED IN ZIP!

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             [Default.aspx]
<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>
 
<!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 runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <br />
        Select from list:<br />
        <asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="SqlDataSource1" DataTextField="name" DataValueField="person_id" AppendDataBoundItems="true">
        <asp:ListItem Value="0">--not specified--</asp:ListItem>
        </asp:DropDownList>&nbsp;<br />
        <br />
        <br />
        Or search by free text:<br />
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br />
        &nbsp;<br />
        <br />
        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Submit" /><br />
        <br />
        <asp:GridView ID="GridView1" runat="server">
        </asp:GridView>
        <br />
        &nbsp;<br />
        <br />
        
        
    
        <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Bruno.mdf;Integrated Security=True;User Instance=True" ProviderName="System.Data.SqlClient" SelectCommand="SELECT [person_id], [name] FROM [person]"></asp:SqlDataSource>
    
    </div>
        <asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Bruno.mdf;Integrated Security=True;User Instance=True"
            ProviderName="System.Data.SqlClient" SelectCommand="SELECT [person_id], [name], [shoe_id] FROM [person] WHERE ([name] LIKE '%' + @name + '%')">
            <SelectParameters>
                <asp:ControlParameter ControlID="TextBox1" Name="name" PropertyName="Text" Type="String" />
            </SelectParameters>
        </asp:SqlDataSource>
        <asp:SqlDataSource ID="SqlDataSource3" runat="server" ConnectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Bruno.mdf;Integrated Security=True;User Instance=True"
            SelectCommand="SELECT [person_id], [name], [shoe_id] FROM [person] WHERE ([person_id] = @person_id)">
            <SelectParameters>
                <asp:ControlParameter ControlID="DropDownList1" Name="person_id" PropertyName="SelectedValue"
                    Type="Int32" />
            </SelectParameters>
        </asp:SqlDataSource>
    </form>
</body>
</html>
 
 
 
[Default.aspx.cs]
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
 
public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
 
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        if (TextBox1.Text.Trim().Length>=1)
            GridView1.DataSource = SqlDataSource2; //use textbox
        else
            GridView1.DataSource = SqlDataSource3; //use dropdown
 
        GridView1.DataBind();
    }
}
           
         

Attachments:

ee.png (4 KB) (File Type Details)

screenshot

JavaScript1-ee.zip (127 KB) (File Type Details)

REMOVE ALL .TXT EXTENSIONS IN ALL FOLDERS

Need ASP.net/Javascript help

Asked by davidsperling in Programming for ASP.NET, JavaScript

About this solution