Search button, to search in Repeater - asp.net

Question

I want to create a search button, so that I can search based on what I want to search in repeater table. I do not know how to it, cause I already try repGender.Rebind(), but still wrong... I do not know how to the behind code, as I know that we need:
Protected Sub BtnSearch_Click(sender As Object, e As EventArgs) Handles BtnSearch.Click
This is the UI, the table is in repeater
FRONT CODE
<label for="name">Jantina</label>
<asp:DropDownList ID="ddlGender" runat="server"></asp:DropDownList>
<asp:Button ID="BtnSearch" runat="server" Text="Search" />
<br/><br/>
<asp:Repeater ID="repGender" runat="server">
<HeaderTemplate>
<table cellspacing="0" rules="all" border="1">
<tr>
<th>Gender</th>
<th>Total</th>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td>
<%# Eval("GENDER")%>
</td>
<td style="text-align: center">
<%# Eval("TOTAL")%></a>
</td>
</tr>
</ItemTemplate>
<FooterTemplate>
<tr style="font-weight: bold">
<td>Grand Total</td>
<td style="text-align: center">
<asp:Label runat="server" ID="lblTotal"></asp:Label>
</td>
</tr>
</table>
</FooterTemplate>
</asp:Repeater>
BEHIND CODE
Partial Class Statistics
Inherits App.Main
Dim MyTotal As Integer
Private Property Label As Object
Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
If Not IsPostBack Then
BindData()
ddlGender_Bind()
End If
End Sub
Sub BindData()
Dim dal As New DBWrapper.DAL(strConnectionString, strProviderName)
Dim dt As New DataTable
dal.DB.Parameters.Clear()
dal.DB.AddParameter("#GENDER", ddlGender.Text)
If dal.DB.ExecuteProcedure(dt, "GENDER_BB") Then
repGender.DataSource = dt
repGender.DataBind()
End If
End Sub
Protected Sub repGender_ItemDataBound(sender As Object, e As RepeaterItemEventArgs) Handles repGender.ItemDataBound
If e.Item.ItemType = ListItemType.Item OrElse e.Item.ItemType = ListItemType.AlternatingItem Then
Dim gData As DataRowView = e.Item.DataItem
MyTotal = MyTotal + gData.Item("TOTAL")
End If
If e.Item.ItemType = ListItemType.Footer Then
' set the total value in footer
Dim lblTotal As Label = e.Item.FindControl("lblTotal")
lblTotal.Text = MyTotal
End If
End Sub
Public Sub ddlGender_Bind()
Dim dal As New DBWrapper.DAL(strConnectionString, strProviderName)
Dim dt As New DataTable
If dal.DB.ExecuteProcedure(dt, "GENDER_R") Then
Share.LoadList(ddlGender, "GENDER", "GENDER_ID", dt, Enums.MsgCode.PleaseSelect.ToString, ListOrder.ByValue)
End If
End Sub
Protected Sub BtnSearch_Click(sender As Object, e As EventArgs) Handles BtnSearch.Click
End Sub
End Class

Answer 1

Here I share the answer for people to refer...
Protected Sub BtnSearch_Click(sender As Object, e As EventArgs) Handles BtnSearch.Click
Dim dal As New DBWrapper.DAL(strConnectionString, strProviderName)
Dim dt As New DataTable
dal.DB.Parameters.Clear()
dal.DB.AddParameter("#GENDER", ddlGender.SelectedValue)
If dal.DB.ExecuteProcedure(dt, "GENDER_B") Then
repGender.DataSource = dt
repGender.DataBind()
End If
End Sub
At Stored Procedure GENDER_B
ALTER PROCEDURE [dbo].[GENDER_B]
#GENDER as INT
AS
BEGIN
declare #sql as varchar(max)
set #sql='SELECT b.GENDER, COUNT(b.GENDER) AS TOTAL FROM USERS a
JOIN GENDER b ON b.GENDER_ID = a.GENDER
WHERE IS_DELETED = 0
GROUP BY b.GENDER'
if #GENDER<>''
begin
set #sql = #sql + 'and a.GENDER=''' + #GENDER + ''' '
end
--select #sql
exec(#sql)
END