使用 DataTextField 属性设置列表框格式

Question

I have a list box in my aspx page:

<asp:ListBox ID="lstTreatmentProvider" runat="server" SelectionMode="Multiple" Width="175px"
                                        Height="81" CssClass="SingleColumnlist" DataSourceID="dtsTreatmentProviders" DataTextField="FirstName" DataValueField="ServiceId"></asp:ListBox>

I am using this datasource for listbox:

<asp:ObjectDataSource ID="dtsTreatmentProviders" runat="server" SelectMethod="GetAllTreatmentProviders"
                        TypeName="Pc.PrecisionCare2.BLL.Administration.TreatmentProvider.TreatmentProviderBO"
                        SortParameterName="sortExpression"></asp:ObjectDataSource>

As you can see, I am using in list box, DataTextField="FirstName" because my datasource returns some data of treatment provider including first name, last name etc.

I want to have my list box as containing First Name + Last Name Can I do this somehow using DataTextField property?

PS: I do not want to do this in cs file. I want something in aspx.

Thanks in advance.

Answer 1

You can get the First Name + Last Name in your SQL query, if you don't want to do it in code behind. eg..

Select ([First Name] + [Last Name]) as [First Name],... from TableName

Answer 2

You can try adding a Public property to your TreatmentProviderBO like below

public String FullName
{
    get { return FirstName + " " + LastName ;}
}

You can set the DataTextField to FullName.

If you can't edit the BO, I think you can use Extension Methods, though I'm not very sure whether you can give a method name to DataTextField. You may try.

Answer 3

Would this post be helpful for you?

Bind drop down list with Dictionary

I think you could use the anonymous type too.

Answer 4

If you don't want to change the query as you are sticking with LINQ try the following one

  var aa = (from Varible in Collection select new { name = Varible.FirstName + Varible.LastName }).ToList();

Now set the DataTextField Property to "name". Hope it helps.