How to define the selected value for this?

Question

<select name="MessageType"  style="width: 151px">
    <option value="P">P - Proprietary</option>
    <option value="B">B - BCBSA</option>
    <option value="S">S - Place Specific</option>
</select>

How to set the selected value for this Dropdownlist box?

<%=p.MessageType%>.. this is the value I am getting from database so that In my Grid what ever the Value coming form database it will show in the Dropdownlistbox on the Grid now its showing me as Default value P even Database value B

Thanks

Darin Dimitrov · Answer 1 · 2010-09-22T17:02:14.827

7

I would recommend you using the standard HTML helper method (Html.DropDownListFor) for generating the select field.

<%= Html.DropDownListFor(x => x.MessageType, new SelectList(new[] {
    new { Id = "P", Value = "P - Proprietary" },
    new { Id = "B", Value = "B - BCBSA" },
    new { Id = "S", Value = "S - Place Specific" },
}, "Id", "Value"), new { style = "width: 151px" }) %>

Then simply set the MessageType property on your view model to any of the possible values (P, B, S) and the helper will take care of the rest.

edited Sep 22 '10 at 17:02

answered Sep 22 '10 at 16:56

Darin Dimitrov

1,023,142
271
3,287
2,928

Yes But I am hard coding the dropdown list values.. in this case? – kumar Sep 22 '10 at 16:57
@kumar: you can provide them with your model that will fill them up in the `DropDownListFor()` – Robert Koritnik Sep 22 '10 at 16:58
I am not able to display the Database Value in to the Dropdown list box – kumar Sep 22 '10 at 17:10
1

*Not working fine* is not a very precise problem description, at least not one that would allow us to help you much. – Darin Dimitrov Sep 22 '10 at 17:22

score 4 · Accepted Answer · answered Sep 22 '10 at 16:58

4

Quick and dirty way:

<select name="MessageType"  style="width: 151px">
    <option value="P"<%=p.MessageType == "P" ? "selected=\"selected\"" : "" %>>P - Proprietary</option>
    <option value="B"<%=p.MessageType == "B" ? "selected=\"selected\"" : "" %>>B - BCBSA</option>
    <option value="S"<%=p.MessageType == "S" ? "selected=\"selected\"" : "" %>>S - Place Specific</option>
</select>

answered Sep 22 '10 at 16:58

hunter

62,308
19
113
113

Thanks hunter.. if I try your code I am getting this error message Cannot convert lambda expression to type 'System.Collections.Generic.IEnumerable' because it is not a delegate type Please help me out for solving this issue – kumar Sep 22 '10 at 17:00
I think you'll need to post more. I assumed `p` was some local variable. What is `p`? – hunter Sep 22 '10 at 17:04
P is some value.. which is the MessgeType.. P B S are MessageTypes. – kumar Sep 22 '10 at 17:11

score 1 · Answer 3 · edited May 23 '17 at 10:32

1

For example, try:

<option selected="selected">

This and this might help.

edited May 23 '17 at 10:32

Community

1
1

answered Sep 22 '10 at 17:00

KMån

9,896
2
31
41

score 1 · Answer 4 · answered Sep 22 '10 at 17:36

In your view model you can have an object that contains the full collection of MessageTypes, then name your DDL to the foreign key of your main Message table, thus allowing it to take advantage of the built-in binding.

<select name="Message.TypeId" id="Message_TypeId"  style="width: 151px">
    <option value="P">P - Proprietary</option>
    <option value="B">B - BCBSA</option>
    <option value="S">S - Place Specific</option>
</select>

Assuming your model contains a message object,

Model.Message.TypeId will correspond to, and highlight the appropriate DDL option.

score 0 · Answer 5 · answered Sep 22 '10 at 16:59

0

First, this is a standard HTML dropdown. If you want to work with it as a .NET object, it needs to be an asp:DropDownList, and then you can access the selection using SelectedItem or SelectedValue.

For HTML dropdowns, simply add the "selected" attribute to the option element you wish to specify it as the initially-selected value.

answered Sep 22 '10 at 16:59

KeithS

70,210
21
112
164

1

-1: This is MVC not WebForms: Avoid Asp.net WebForms server controls at all costs. – Robert Koritnik Sep 22 '10 at 17:01

How to define the selected value for this?

5 Answers5