Showing countries from DB when typed text matches

Question

 I  have List of Countries in my Database. When I type the countries Name in Text box
it has to show the countries name  that starts with that typed alphabetic character.

Ex:

I am typing the text " Ind " in text box  , then it has to show the countries name that starts with the letter
"ind". Is there any features available in  .Net to Implement this task.

More clearly please refer Google Search.In google search If we type Ind  then it will show
some text that already we have searched or typed.

Can any one help on this regard.

Answer 1

write this in codebehind. This reads the data from the database but u can use the readXml method of the dataset and popluate.

Public Function PopulateTitle() As DataSet
Dim cn As New SqlConnection
Dim daPricing As SqlDataAdapter
Dim dsPricing As New DataSet
Dim TempList As New DropDownList
Dim myRow As DataRow
cn = New SqlClient.SqlConnection("ur connection string")
cn.Open()
daPricing = New SqlDataAdapter("SELECT TITLE, TITLE_ID FROM XYZ ORDER BY TITLE", cn)
daPricing.Fill(dsPricing)
PopulateTitle = dsPricing
dsPricing.Dispose()
daPricing.Dispose()
cn.Close()
End Function

write the following in .aspx
   <asp:TemplateColumn HeaderText="Title">
      <ItemTemplate>
       <asp:Label ID="lblTitle" Text='<%# DataBinder.Eval(Container.DataItem, "TITLE") %>' Runat="server" Width="176px" />
      </ItemTemplate>
      <EditItemTemplate>
       <asp:DropDownList id="ddlTitle" runat="server" DataSource="<%# PopulateTitle %>" DataTextField="TITLE" DataValueField="SERVICE_ID" OnPreRender="setTitle" Width="176px">
       </asp:DropDownList>
      </EditItemTemplate>
     </asp:TemplateColumn>

Method which is highlighted is as follows

Public Sub setTitle(ByVal sender As Object, ByVal e As System.EventArgs)
Dim ddlTitle As DropDownList
ddlTitle = sender
If (Not ddlTitle Is Nothing And strServiceTitle <> "") Then
ddlTitle.ClearSelection()
ddlTitle.Items.FindByText(strServiceTitle).Selected = True
End If
End Sub

strServiceTitle is:

Public Sub edit(ByVal sender As System.Object, ByVal e As DataGridCommandEventArgs)strServiceTitle = CType(e.Item.FindControl("lbltitle"), Label).Text
End Sub

Answer 2

Firstly you will have to use the asp:TemplateColumn Use the itemdatabound event of the datagrid In this evnet you will have to check for the ItemType if it is ListItemType.EditItem then you can populate the control of that particular cell. Hope this helps :) Anuj