How show value in dropdown based on textbox

Question

1.00/5 (2 votes)

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i want to type some text in textbox based on that text box value dropdownlist value should be select.in my dropdown values are coming from database.
please help me.give me logic

What I have tried:

i have tried to use dropdownlistextender using ajax but not working

Posted 12-Jul-16 1:19am

Pragya Nagwanshi

Updated 12-Jul-16 3:39am

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Karthik_Mahalingam 12-Jul-16 9:19am

try using javascript/jquery

AnvilRanger 12-Jul-16 9:52am

Are you talking about using autocomplete like https://jqueryui.com/autocomplete/?
If not your design sounds very odd, using a free form textbox to select the value from a defined list in the dropdown.

2 solutions

Solution 2

try this using javascript

HTML

<html>
<head>
    <script>
        function selectValue(e, value) {
            var ddl = document.getElementById('<%= DropDownList1.ClientID %>');
            for (var i = 0; i < ddl.options.length; i++) {
                if (ddl.options[i].text == value) {
                    ddl.options[i].selected = true;
                }
            }
        }
    </script>

</head>
<body>

    <form id="form1" runat="server">

        <asp:TextBox ID="TextBox1" onkeyup="selectValue(event,value)" runat="server"></asp:TextBox>
        <asp:DropDownList ID="DropDownList1" runat="server">
        </asp:DropDownList>
    </form>

</body>
</html>

Posted 12-Jul-16 3:39am

Karthik_Mahalingam

Comments

Pragya Nagwanshi 26-Jul-16 2:53am

Thanks all of u guyz.I did it

Karthik_Mahalingam 26-Jul-16 4:23am

working?

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SagSD · Accepted Answer · 2016-07-12T02:24:00

I have not clearly understood from sentence you posted.if you want to select dropdownlist item based on text entered on textbox ,in asp.net webform you can use textchanged event.
Code will look something like this

C#

protected void TextBox1_TextChanged(object sender, EventArgs e)
      {
          if (TextBox1.Text == "xyz")
              DropDownList1.SelectedValue = "0";
      }

in aspx something like this\..

ASP.NET

<div>
        <asp:TextBox ID="TextBox1" runat="server" OnTextChanged="TextBox1_TextChanged"></asp:TextBox>
    
    </div>
        <asp:DropDownList ID="DropDownList1" runat="server">
        </asp:DropDownList>

you can use update panel if you want to stop postback