CODEWITHSUNDEEP
c#asp.netsql-server-2008
Santu Srinu
Santu Srinu

Reputation: 101

asp.net dropdown list issue?

I have a dropdown list which contains a number of items. I added a default list item to the dropdown.

For example, I have 4 list items in the dropdown:

  1. Apple
  2. banana
  3. grapes
  4. mango

I want to add a default list item of: please select item, which is not displayed in all list items in the dropdown.

How is this possible?

Upvotes: 0

Views: 1046

Answers (5)

Sai Kalyan Kumar Akshinthala
Sai Kalyan Kumar Akshinthala

Reputation: 11844

You can write like follows

    protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (DropDownList1.SelectedIndex < 0)
        {
            DropDownList1.Text = "Please Select Item";
        }
        else
        {
            DropDownList1.Text = DropDownList1.SelectedValue;
        }
    }

EDIT:

The above code will display the "Please Select Item" only when the index of dd becomes lessthan 0 (i.e., when nothing selected), to test this at page_Load event make the index of dd to -1.

Upvotes: 0

gsirianni
gsirianni

Reputation: 1364

If you're adding the "Select One" item to the drop down from a reference table in a database (i.e. databinding) make sure to set the 

AppendDataBoundItems="true" so that  the form will append the new item BEFORE performing a databind.

One of my drop downs looks like this. It uses a datasource.

    <asp:DropDownList ID="ddPackageStatus" runat="server" Width="200px"
AppendDataBoundItems="true"  BackColor="White" Font-Size="10px"
DataSourceID="sdsPackageStatus" 
DataTextField="PackageStatus" DataValueField="PackageStatus">
        <asp:ListItem Text="Select One" Value=""></asp:ListItem>
    </asp:DropDownList>

Upvotes: 1

Karthik
Karthik

Reputation: 2399

this may help

dropdwnlist.Items.Insert(0, "please select item");

Upvotes: 7

dipak
dipak

Reputation: 2033

I have done this before, this is too simple thing

    private void BindCountryList()
    {
        List<Country> list = GetCountryList();
        list.Insert(0, new Country { CountryName = "Please select" });
        ddCountry.DataSource = list;
        ddCountry.DataTextField = "CountryName";
        ddCountry.DataValueField = "CountryName";
        ddCountry.DataBind();
    }

Upvotes: 0

Matt Seymour
Matt Seymour

Reputation: 9415

You need to make sure the item you want as the default is in the list. This means you will need to add an item called 'Please select item' to the drop down list.

Upvotes: 0

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